merge

17 files changed, 1362 insertions, 729 deletions

diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index 635344bc4b..c3242389c2 100755
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -8,6 +8,7 @@ include(LLCommon)
 include(Linking)
 include(Boost)
 include(LLSharedLibs)
+include(JsonCpp)
 include(GoogleBreakpad)
 include(GooglePerfTools)
 include(Copy3rdPartyLibs)
@@ -17,6 +18,7 @@ include(URIPARSER)
 include_directories(
     ${EXPAT_INCLUDE_DIRS}
     ${LLCOMMON_INCLUDE_DIRS}
+    ${JSONCPP_INCLUDE_DIR}
     ${ZLIB_INCLUDE_DIRS}
     ${BREAKPAD_INCLUDE_DIRECTORIES}
     ${URIPARSER_INCLUDE_DIRS}
@@ -87,6 +89,7 @@ set(llcommon_SOURCE_FILES
     llrefcount.cpp
     llrun.cpp
     llsd.cpp
+    llsdjson.cpp
     llsdparam.cpp
     llsdserialize.cpp
     llsdserialize_xml.cpp
@@ -198,6 +201,7 @@ set(llcommon_HEADER_FILES
     llrefcount.h
     llsafehandle.h
     llsd.h
+    llsdjson.h
     llsdparam.h
     llsdserialize.h
     llsdserialize_xml.h
@@ -266,10 +270,14 @@ target_link_libraries(
     ${APRUTIL_LIBRARIES}
     ${APR_LIBRARIES}
     ${EXPAT_LIBRARIES}
+    ${JSONCPP_LIBRARIES}
     ${ZLIB_LIBRARIES}
     ${WINDOWS_LIBRARIES}
+    ${BOOST_COROUTINE_LIBRARY}
+    ${BOOST_CONTEXT_LIBRARY}
     ${BOOST_PROGRAM_OPTIONS_LIBRARY}
     ${BOOST_REGEX_LIBRARY}
+    ${BOOST_SYSTEM_LIBRARY}
     ${GOOGLE_PERFTOOLS_LIBRARIES}
     ${URIPARSER_LIBRARIES}
     )
@@ -290,7 +298,14 @@ if (LL_TESTS)
   LL_ADD_PROJECT_UNIT_TESTS(llcommon "${llcommon_TEST_SOURCE_FILES}")
 
   #set(TEST_DEBUG on)
-  set(test_libs llcommon ${LLCOMMON_LIBRARIES} ${WINDOWS_LIBRARIES} ${GOOGLEMOCK_LIBRARIES})
+  set(test_libs llcommon 
+      ${LLCOMMON_LIBRARIES} 
+      ${WINDOWS_LIBRARIES} 
+      ${GOOGLEMOCK_LIBRARIES} 
+      ${BOOST_COROUTINE_LIBRARY} 
+      ${BOOST_CONTEXT_LIBRARY} 
+      ${BOOST_THREAD_LIBRARY} 
+      ${BOOST_SYSTEM_LIBRARY})
   LL_ADD_INTEGRATION_TEST(commonmisc "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(bitpack "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llbase64 "" "${test_libs}")
@@ -312,7 +327,7 @@ if (LL_TESTS)
   LL_ADD_INTEGRATION_TEST(llunits "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(stringize "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(lleventdispatcher "" "${test_libs}")
-  LL_ADD_INTEGRATION_TEST(lleventcoro "" "${test_libs};${BOOST_CONTEXT_LIBRARY};${BOOST_THREAD_LIBRARY};${BOOST_COROUTINE_LIBRARY};${BOOST_SYSTEM_LIBRARY}")
+  LL_ADD_INTEGRATION_TEST(lleventcoro "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llprocess "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llleap "" "${test_libs}")
   LL_ADD_INTEGRATION_TEST(llstreamqueue "" "${test_libs}")
diff --git a/indra/llcommon/fix_macros.h b/indra/llcommon/fix_macros.h
index ef959decff..43c09c54bc 100755
--- a/indra/llcommon/fix_macros.h
+++ b/indra/llcommon/fix_macros.h
@@ -16,10 +16,6 @@
 // these macros all over again.
 
 // who injects MACROS with such generic names?! Grr.
-#ifdef equivalent
-#undef equivalent
-#endif 
-
 #ifdef check
 #undef check
 #endif
diff --git a/indra/llcommon/linden_common.h b/indra/llcommon/linden_common.h
index 5cfcdab41c..e5a913a6a9 100755
--- a/indra/llcommon/linden_common.h
+++ b/indra/llcommon/linden_common.h
@@ -51,6 +51,7 @@
 #include <cstdlib>
 #include <ctime>
 #include <iosfwd>
+#include <memory>
 
 // Linden only libs in alpha-order other than stdtypes.h
 // *NOTE: Please keep includes here to a minimum, see above.
diff --git a/indra/llcommon/llcoros.cpp b/indra/llcommon/llcoros.cpp
index baaddcaed1..d16bf0160b 100755
--- a/indra/llcommon/llcoros.cpp
+++ b/indra/llcommon/llcoros.cpp
@@ -39,6 +39,62 @@
 #include "llerror.h"
 #include "stringize.h"
 
+// do nothing, when we need nothing done
+void LLCoros::no_cleanup(CoroData*) {}
+
+// CoroData for the currently-running coroutine. Use a thread_specific_ptr
+// because each thread potentially has its own distinct pool of coroutines.
+// This thread_specific_ptr does NOT own the CoroData object! That's owned by
+// LLCoros::mCoros. It merely identifies it. For this reason we instantiate
+// it with a no-op cleanup function.
+boost::thread_specific_ptr<LLCoros::CoroData>
+LLCoros::sCurrentCoro(LLCoros::no_cleanup);
+
+//static
+LLCoros::CoroData& LLCoros::get_CoroData(const std::string& caller)
+{
+    CoroData* current = sCurrentCoro.get();
+    if (! current)
+    {
+        LL_ERRS("LLCoros") << "Calling " << caller << " from non-coroutine context!" << LL_ENDL;
+    }
+    return *current;
+}
+
+//static
+LLCoros::coro::self& LLCoros::get_self()
+{
+    return *get_CoroData("get_self()").mSelf;
+}
+
+//static
+void LLCoros::set_consuming(bool consuming)
+{
+    get_CoroData("set_consuming()").mConsuming = consuming;
+}
+
+//static
+bool LLCoros::get_consuming()
+{
+    return get_CoroData("get_consuming()").mConsuming;
+}
+
+llcoro::Suspending::Suspending():
+    mSuspended(LLCoros::sCurrentCoro.get())
+{
+    // Revert mCurrentCoro to the value it had at the moment we last switched
+    // into this coroutine.
+    LLCoros::sCurrentCoro.reset(mSuspended->mPrev);
+}
+
+llcoro::Suspending::~Suspending()
+{
+    // Okay, we're back, update our mPrev
+    mSuspended->mPrev = LLCoros::sCurrentCoro.get();
+    // and reinstate our sCurrentCoro.
+    LLCoros::sCurrentCoro.reset(mSuspended);
+}
+
 LLCoros::LLCoros():
     // MAINT-2724: default coroutine stack size too small on Windows.
     // Previously we used
@@ -53,14 +109,33 @@ LLCoros::LLCoros():
 
 bool LLCoros::cleanup(const LLSD&)
 {
+    static std::string previousName;
+    static int previousCount = 0;
     // Walk the mCoros map, checking and removing completed coroutines.
     for (CoroMap::iterator mi(mCoros.begin()), mend(mCoros.end()); mi != mend; )
     {
         // Has this coroutine exited (normal return, exception, exit() call)
         // since last tick?
-        if (mi->second->exited())
+        if (mi->second->mCoro.exited())
         {
-			   LL_INFOS("LLCoros") << "LLCoros: cleaning up coroutine " << mi->first << LL_ENDL;
+            if (previousName != mi->first)
+            { 
+                previousName = mi->first;
+                previousCount = 1;
+            }
+            else
+            {
+                ++previousCount;
+            }
+               
+            if ((previousCount < 5) || !(previousCount % 50))
+            {
+                if (previousCount < 5)
+                    LL_INFOS("LLCoros") << "LLCoros: cleaning up coroutine " << mi->first << LL_ENDL;
+                else
+                    LL_INFOS("LLCoros") << "LLCoros: cleaning up coroutine " << mi->first << "("<< previousCount << ")" << LL_ENDL;
+
+            }
             // The erase() call will invalidate its passed iterator value --
             // so increment mi FIRST -- but pass its original value to
             // erase(). This is what postincrement is all about.
@@ -78,6 +153,9 @@ bool LLCoros::cleanup(const LLSD&)
 
 std::string LLCoros::generateDistinctName(const std::string& prefix) const
 {
+    static std::string previousName;
+    static int previousCount = 0;
+
     // Allowing empty name would make getName()'s not-found return ambiguous.
     if (prefix.empty())
     {
@@ -94,7 +172,25 @@ std::string LLCoros::generateDistinctName(const std::string& prefix) const
     {
         if (mCoros.find(name) == mCoros.end())
         {
-			   LL_INFOS("LLCoros") << "LLCoros: launching coroutine " << name << LL_ENDL;
+            if (previousName != name)
+            {
+                previousName = name;
+                previousCount = 1;
+            }
+            else
+            {
+                ++previousCount;
+            }
+
+            if ((previousCount < 5) || !(previousCount % 50))
+            {
+                if (previousCount < 5)
+                    LL_INFOS("LLCoros") << "LLCoros: launching coroutine " << name << LL_ENDL;
+                else
+                    LL_INFOS("LLCoros") << "LLCoros: launching coroutine " << name << "(" << previousCount << ")" << LL_ENDL;
+
+            }
+
             return name;
         }
     }
@@ -114,20 +210,15 @@ bool LLCoros::kill(const std::string& name)
     return true;
 }
 
-std::string LLCoros::getNameByID(const void* self_id) const
+std::string LLCoros::getName() const
 {
-    // Walk the existing coroutines, looking for one from which the 'self_id'
-    // passed to us comes.
-    for (CoroMap::const_iterator mi(mCoros.begin()), mend(mCoros.end()); mi != mend; ++mi)
+    CoroData* current = sCurrentCoro.get();
+    if (! current)
     {
-        namespace coro_private = boost::dcoroutines::detail;
-        if (static_cast<void*>(coro_private::coroutine_accessor::get_impl(const_cast<coro&>(*mi->second)).get())
-            == self_id)
-        {
-            return mi->first;
-        }
+        // not in a coroutine
+        return "";
     }
-    return "";
+    return current->mName;
 }
 
 void LLCoros::setStackSize(S32 stacksize)
@@ -136,10 +227,24 @@ void LLCoros::setStackSize(S32 stacksize)
     mStackSize = stacksize;
 }
 
+// Top-level wrapper around caller's coroutine callable. This function accepts
+// the coroutine library's implicit coro::self& parameter and sets sCurrentSelf
+// but does not pass it down to the caller's callable.
+void LLCoros::toplevel(coro::self& self, CoroData* data, const callable_t& callable)
+{
+    // capture the 'self' param in CoroData
+    data->mSelf = &self;
+    // run the code the caller actually wants in the coroutine
+    callable();
+    // This cleanup isn't perfectly symmetrical with the way we initially set
+    // data->mPrev, but this is our last chance to reset mCurrentCoro.
+    sCurrentCoro.reset(data->mPrev);
+}
+
 /*****************************************************************************
 *   MUST BE LAST
 *****************************************************************************/
-// Turn off MSVC optimizations for just LLCoros::launchImpl() -- see
+// Turn off MSVC optimizations for just LLCoros::launch() -- see
 // DEV-32777. But MSVC doesn't support push/pop for optimization flags as it
 // does for warning suppression, and we really don't want to force
 // optimization ON for other code even in Debug or RelWithDebInfo builds.
@@ -147,15 +252,35 @@ void LLCoros::setStackSize(S32 stacksize)
 #if LL_MSVC
 // work around broken optimizations
 #pragma warning(disable: 4748)
+#pragma warning(disable: 4355) // 'this' used in initializer list: yes, intentionally
 #pragma optimize("", off)
 #endif // LL_MSVC
 
-std::string LLCoros::launchImpl(const std::string& prefix, coro* newCoro)
+LLCoros::CoroData::CoroData(CoroData* prev, const std::string& name,
+                            const callable_t& callable, S32 stacksize):
+    mPrev(prev),
+    mName(name),
+    // Wrap the caller's callable in our toplevel() function so we can manage
+    // sCurrentCoro appropriately at startup and shutdown of each coroutine.
+    mCoro(boost::bind(toplevel, _1, this, callable), stacksize),
+    // don't consume events unless specifically directed
+    mConsuming(false),
+    mSelf(0)
+{
+}
+
+std::string LLCoros::launch(const std::string& prefix, const callable_t& callable)
 {
     std::string name(generateDistinctName(prefix));
+    // pass the current value of sCurrentCoro as previous context
+    CoroData* newCoro = new CoroData(sCurrentCoro.get(), name,
+                                     callable, mStackSize);
+    // Store it in our pointer map
     mCoros.insert(name, newCoro);
+    // also set it as current
+    sCurrentCoro.reset(newCoro);
     /* Run the coroutine until its first wait, then return here */
-    (*newCoro)(std::nothrow);
+    (newCoro->mCoro)(std::nothrow);
     return name;
 }
 
diff --git a/indra/llcommon/llcoros.h b/indra/llcommon/llcoros.h
index 01ee11da1a..39316ed0e6 100755
--- a/indra/llcommon/llcoros.h
+++ b/indra/llcommon/llcoros.h
@@ -30,14 +30,20 @@
 #define LL_LLCOROS_H
 
 #include <boost/dcoroutine/coroutine.hpp>
+#include <boost/dcoroutine/future.hpp>
 #include "llsingleton.h"
 #include <boost/ptr_container/ptr_map.hpp>
+#include <boost/function.hpp>
+#include <boost/thread/tss.hpp>
 #include <string>
-#include <boost/preprocessor/repetition/enum_params.hpp>
-#include <boost/preprocessor/repetition/enum_binary_params.hpp>
-#include <boost/preprocessor/iteration/local.hpp>
 #include <stdexcept>
 
+// forward-declare helper class
+namespace llcoro
+{
+class Suspending;
+}
+
 /**
  * Registry of named Boost.Coroutine instances
  *
@@ -80,8 +86,8 @@ class LL_COMMON_API LLCoros: public LLSingleton<LLCoros>
 public:
     /// Canonical boost::dcoroutines::coroutine signature we use
     typedef boost::dcoroutines::coroutine<void()> coro;
-    /// Canonical 'self' type
-    typedef coro::self self;
+    /// Canonical callable type
+    typedef boost::function<void()> callable_t;
 
     /**
      * Create and start running a new coroutine with specified name. The name
@@ -94,39 +100,33 @@ public:
      * {
      * public:
      *     ...
-     *     // Do NOT NOT NOT accept reference params other than 'self'!
+     *     // Do NOT NOT NOT accept reference params!
      *     // Pass by value only!
-     *     void myCoroutineMethod(LLCoros::self& self, std::string, LLSD);
+     *     void myCoroutineMethod(std::string, LLSD);
      *     ...
      * };
      * ...
      * std::string name = LLCoros::instance().launch(
-     *    "mycoro", boost::bind(&MyClass::myCoroutineMethod, this, _1,
+     *    "mycoro", boost::bind(&MyClass::myCoroutineMethod, this,
      *                          "somestring", LLSD(17));
      * @endcode
      *
-     * Your function/method must accept LLCoros::self& as its first parameter.
-     * It can accept any other parameters you want -- but ONLY BY VALUE!
-     * Other reference parameters are a BAD IDEA! You Have Been Warned. See
+     * Your function/method can accept any parameters you want -- but ONLY BY
+     * VALUE! Reference parameters are a BAD IDEA! You Have Been Warned. See
      * DEV-32777 comments for an explanation.
      *
-     * Pass a callable that accepts the single LLCoros::self& parameter. It
-     * may work to pass a free function whose only parameter is 'self'; for
-     * all other cases use boost::bind(). Of course, for a non-static class
-     * method, the first parameter must be the class instance. Use the
-     * placeholder _1 for the 'self' parameter. Any other parameters should be
-     * passed via the bind() expression.
+     * Pass a nullary callable. It works to directly pass a nullary free
+     * function (or static method); for all other cases use boost::bind(). Of
+     * course, for a non-static class method, the first parameter must be the
+     * class instance. Any other parameters should be passed via the bind()
+     * expression.
      *
      * launch() tweaks the suggested name so it won't collide with any
      * existing coroutine instance, creates the coroutine instance, registers
      * it with the tweaked name and runs it until its first wait. At that
      * point it returns the tweaked name.
      */
-    template <typename CALLABLE>
-    std::string launch(const std::string& prefix, const CALLABLE& callable)
-    {
-        return launchImpl(prefix, new coro(callable, mStackSize));
-    }
+    std::string launch(const std::string& prefix, const callable_t& callable);
 
     /**
      * Abort a running coroutine by name. Normally, when a coroutine either
@@ -138,33 +138,150 @@ public:
     bool kill(const std::string& name);
 
     /**
-     * From within a coroutine, pass its @c self object to look up the
-     * (tweaked) name string by which this coroutine is registered. Returns
-     * the empty string if not found (e.g. if the coroutine was launched by
-     * hand rather than using LLCoros::launch()).
+     * From within a coroutine, look up the (tweaked) name string by which
+     * this coroutine is registered. Returns the empty string if not found
+     * (e.g. if the coroutine was launched by hand rather than using
+     * LLCoros::launch()).
      */
-    template <typename COROUTINE_SELF>
-    std::string getName(const COROUTINE_SELF& self) const
-    {
-        return getNameByID(self.get_id());
-    }
-
-    /// getName() by self.get_id()
-    std::string getNameByID(const void* self_id) const;
+    std::string getName() const;
 
     /// for delayed initialization
     void setStackSize(S32 stacksize);
 
+    /// get the current coro::self& for those who really really care
+    static coro::self& get_self();
+
+    /**
+     * Most coroutines, most of the time, don't "consume" the events for which
+     * they're suspending. This way, an arbitrary number of listeners (whether
+     * coroutines or simple callbacks) can be registered on a particular
+     * LLEventPump, every listener responding to each of the events on that
+     * LLEventPump. But a particular coroutine can assert that it will consume
+     * each event for which it suspends. (See also llcoro::postAndSuspend(),
+     * llcoro::VoidListener)
+     */
+    static void set_consuming(bool consuming);
+    static bool get_consuming();
+
+    /**
+     * Please do NOT directly use boost::dcoroutines::future! It is essential
+     * to maintain the "current" coroutine at every context switch. This
+     * Future wraps the essential boost::dcoroutines::future functionality
+     * with that maintenance.
+     */
+    template <typename T>
+    class Future;
+
 private:
-    friend class LLSingleton<LLCoros>;
     LLCoros();
-    std::string launchImpl(const std::string& prefix, coro* newCoro);
+    friend class LLSingleton<LLCoros>;
+    friend class llcoro::Suspending;
     std::string generateDistinctName(const std::string& prefix) const;
     bool cleanup(const LLSD&);
+    struct CoroData;
+    static void no_cleanup(CoroData*);
+    static void toplevel(coro::self& self, CoroData* data, const callable_t& callable);
+    static CoroData& get_CoroData(const std::string& caller);
 
     S32 mStackSize;
-    typedef boost::ptr_map<std::string, coro> CoroMap;
+
+    // coroutine-local storage, as it were: one per coro we track
+    struct CoroData
+    {
+        CoroData(CoroData* prev, const std::string& name,
+                 const callable_t& callable, S32 stacksize);
+
+        // The boost::dcoroutines library supports asymmetric coroutines. Every
+        // time we context switch out of a coroutine, we pass control to the
+        // previously-active one (or to the non-coroutine stack owned by the
+        // thread). So our management of the "current" coroutine must be able to
+        // restore the previous value when we're about to switch away.
+        CoroData* mPrev;
+        // tweaked name of the current coroutine
+        const std::string mName;
+        // the actual coroutine instance
+        LLCoros::coro mCoro;
+        // set_consuming() state
+        bool mConsuming;
+        // When the dcoroutine library calls a top-level callable, it implicitly
+        // passes coro::self& as the first parameter. All our consumer code used
+        // to explicitly pass coro::self& down through all levels of call stack,
+        // because at the leaf level we need it for context-switching. But since
+        // coroutines are based on cooperative switching, we can cause the
+        // top-level entry point to stash a pointer to the currently-running
+        // coroutine, and manage it appropriately as we switch out and back in.
+        // That eliminates the need to pass it as an explicit parameter down
+        // through every level, which is unfortunately viral in nature. Finding it
+        // implicitly rather than explicitly allows minor maintenance in which a
+        // leaf-level function adds a new async I/O call that suspends the calling
+        // coroutine, WITHOUT having to propagate coro::self& through every
+        // function signature down to that point -- and of course through every
+        // other caller of every such function.
+        LLCoros::coro::self* mSelf;
+    };
+    typedef boost::ptr_map<std::string, CoroData> CoroMap;
     CoroMap mCoros;
+
+    // identify the current coroutine's CoroData
+    static boost::thread_specific_ptr<LLCoros::CoroData> sCurrentCoro;
+};
+
+namespace llcoro
+{
+
+/// Instantiate one of these in a block surrounding any leaf point when
+/// control literally switches away from this coroutine.
+class Suspending
+{
+public:
+    Suspending();
+    ~Suspending();
+
+private:
+    LLCoros::CoroData* mSuspended;
+};
+
+} // namespace llcoro
+
+template <typename T>
+class LLCoros::Future
+{
+    typedef boost::dcoroutines::future<T> dfuture;
+
+public:
+    Future():
+        mFuture(get_self())
+    {}
+
+    typedef typename boost::dcoroutines::make_callback_result<dfuture>::type callback_t;
+
+    callback_t make_callback()
+    {
+        return boost::dcoroutines::make_callback(mFuture);
+    }
+
+#ifndef LL_LINUX
+    explicit
+#endif
+    operator bool() const
+    {
+        return bool(mFuture);
+    }
+
+    bool operator!() const
+    {
+        return ! mFuture;
+    }
+
+    T get()
+    {
+        // instantiate Suspending to manage the "current" coroutine
+        llcoro::Suspending suspended;
+        return *mFuture;
+    }
+
+private:
+    dfuture mFuture;
 };
 
 #endif /* ! defined(LL_LLCOROS_H) */
diff --git a/indra/llcommon/llerror.h b/indra/llcommon/llerror.h
index 63040e1772..b1b5e9be7d 100755
--- a/indra/llcommon/llerror.h
+++ b/indra/llcommon/llerror.h
@@ -354,6 +354,7 @@ typedef LLError::NoClassInfo _LL_CLASS_TO_LOG;
 #define LL_WARNS(...)	lllog(LLError::LEVEL_WARN, false, ##__VA_ARGS__)
 #define LL_ERRS(...)	lllog(LLError::LEVEL_ERROR, false, ##__VA_ARGS__)
 // alternative to llassert_always that prints explanatory message
+#define LL_WARNS_IF(exp, ...)	if (exp) LL_WARNS(##__VA_ARGS__) << "(" #exp ")"
 #define LL_ERRS_IF(exp, ...)	if (exp) LL_ERRS(##__VA_ARGS__) << "(" #exp ")"
 
 // Only print the log message once (good for warnings or infos that would otherwise
diff --git a/indra/llcommon/lleventcoro.cpp b/indra/llcommon/lleventcoro.cpp
index 81cc33fbba..578a2b62c8 100755
--- a/indra/llcommon/lleventcoro.cpp
+++ b/indra/llcommon/lleventcoro.cpp
@@ -38,34 +38,60 @@
 #include "llsdserialize.h"
 #include "llerror.h"
 #include "llcoros.h"
+#include "llmake.h"
 
-std::string LLEventDetail::listenerNameForCoroImpl(const void* self_id)
+#include "lleventfilter.h"
+
+namespace
 {
-    // First, if this coroutine was launched by LLCoros::launch(), find that name.
-    std::string name(LLCoros::instance().getNameByID(self_id));
+
+/**
+ * suspendUntilEventOn() permits a coroutine to temporarily listen on an
+ * LLEventPump any number of times. We don't really want to have to ask
+ * the caller to label each such call with a distinct string; the whole
+ * point of suspendUntilEventOn() is to present a nice sequential interface to
+ * the underlying LLEventPump-with-named-listeners machinery. So we'll use
+ * LLEventPump::inventName() to generate a distinct name for each
+ * temporary listener. On the other hand, because a given coroutine might
+ * call suspendUntilEventOn() any number of times, we don't really want to
+ * consume an arbitrary number of generated inventName()s: that namespace,
+ * though large, is nonetheless finite. So we memoize an invented name for
+ * each distinct coroutine instance.
+ */
+std::string listenerNameForCoro()
+{
+    // If this coroutine was launched by LLCoros::launch(), find that name.
+    std::string name(LLCoros::instance().getName());
     if (! name.empty())
     {
         return name;
     }
-    // Apparently this coroutine wasn't launched by LLCoros::launch(). Check
-    // whether we have a memo for this self_id.
-    typedef std::map<const void*, std::string> MapType;
-    static MapType memo;
-    MapType::const_iterator found = memo.find(self_id);
-    if (found != memo.end())
-    {
-        // this coroutine instance has called us before, reuse same name
-        return found->second;
-    }
     // this is the first time we've been called for this coroutine instance
     name = LLEventPump::inventName("coro");
-    memo[self_id] = name;
-    LL_INFOS("LLEventCoro") << "listenerNameForCoroImpl(" << self_id << "): inventing coro name '"
+    LL_INFOS("LLEventCoro") << "listenerNameForCoro(): inventing coro name '"
                             << name << "'" << LL_ENDL;
     return name;
 }
 
-void LLEventDetail::storeToLLSDPath(LLSD& dest, const LLSD& rawPath, const LLSD& value)
+/**
+ * Implement behavior described for postAndSuspend()'s @a replyPumpNamePath
+ * parameter:
+ *
+ * * If <tt>path.isUndefined()</tt>, do nothing.
+ * * If <tt>path.isString()</tt>, @a dest is an LLSD map: store @a value
+ *   into <tt>dest[path.asString()]</tt>.
+ * * If <tt>path.isInteger()</tt>, @a dest is an LLSD array: store @a
+ *   value into <tt>dest[path.asInteger()]</tt>.
+ * * If <tt>path.isArray()</tt>, iteratively apply the rules above to step
+ *   down through the structure of @a dest. The last array entry in @a
+ *   path specifies the entry in the lowest-level structure in @a dest
+ *   into which to store @a value.
+ *
+ * @note
+ * In the degenerate case in which @a path is an empty array, @a dest will
+ * @em become @a value rather than @em containing it.
+ */
+void storeToLLSDPath(LLSD& dest, const LLSD& rawPath, const LLSD& value)
 {
     if (rawPath.isUndefined())
     {
@@ -118,6 +144,185 @@ void LLEventDetail::storeToLLSDPath(LLSD& dest, const LLSD& rawPath, const LLSD&
     *pdest = value;
 }
 
+/// For LLCoros::Future<LLSD>::make_callback(), the callback has a signature
+/// like void callback(LLSD), which isn't a valid LLEventPump listener: such
+/// listeners must return bool.
+template <typename LISTENER>
+class FutureListener
+{
+public:
+    // FutureListener is instantiated on the coroutine stack: the stack, in
+    // other words, that wants to suspend.
+    FutureListener(const LISTENER& listener):
+        mListener(listener),
+        // Capture the suspending coroutine's flag as a consuming or
+        // non-consuming listener.
+        mConsume(LLCoros::get_consuming())
+    {}
+
+    // operator()() is called on the main stack: the stack on which the
+    // expected event is fired.
+    bool operator()(const LLSD& event)
+    {
+        mListener(event);
+        // tell upstream LLEventPump whether listener consumed
+        return mConsume;
+    }
+
+protected:
+    LISTENER mListener;
+    bool mConsume;
+};
+
+} // anonymous
+
+void llcoro::suspend()
+{
+    // By viewer convention, we post an event on the "mainloop" LLEventPump
+    // each iteration of the main event-handling loop. So waiting for a single
+    // event on "mainloop" gives us a one-frame suspend.
+    suspendUntilEventOn("mainloop");
+}
+
+void llcoro::suspendUntilTimeout(float seconds)
+{
+    LLEventTimeout timeout;
+
+    timeout.eventAfter(seconds, LLSD());
+    llcoro::suspendUntilEventOn(timeout);
+}
+
+LLSD llcoro::postAndSuspend(const LLSD& event, const LLEventPumpOrPumpName& requestPump,
+                 const LLEventPumpOrPumpName& replyPump, const LLSD& replyPumpNamePath)
+{
+    // declare the future
+    LLCoros::Future<LLSD> future;
+    // make a callback that will assign a value to the future, and listen on
+    // the specified LLEventPump with that callback
+    std::string listenerName(listenerNameForCoro());
+    LLTempBoundListener connection(
+        replyPump.getPump().listen(listenerName,
+                                   llmake<FutureListener>(future.make_callback())));
+    // skip the "post" part if requestPump is default-constructed
+    if (requestPump)
+    {
+        // If replyPumpNamePath is non-empty, store the replyPump name in the
+        // request event.
+        LLSD modevent(event);
+        storeToLLSDPath(modevent, replyPumpNamePath, replyPump.getPump().getName());
+        LL_DEBUGS("lleventcoro") << "postAndSuspend(): coroutine " << listenerName
+                                 << " posting to " << requestPump.getPump().getName()
+                                 << LL_ENDL;
+
+        // *NOTE:Mani - Removed because modevent could contain user's hashed passwd.
+        //                         << ": " << modevent << LL_ENDL;
+        requestPump.getPump().post(modevent);
+    }
+    LL_DEBUGS("lleventcoro") << "postAndSuspend(): coroutine " << listenerName
+                             << " about to wait on LLEventPump " << replyPump.getPump().getName()
+                             << LL_ENDL;
+    // calling get() on the future makes us wait for it
+    LLSD value(future.get());
+    LL_DEBUGS("lleventcoro") << "postAndSuspend(): coroutine " << listenerName
+                             << " resuming with " << value << LL_ENDL;
+    // returning should disconnect the connection
+    return value;
+}
+
+namespace
+{
+
+/**
+ * This helper is specifically for postAndSuspend2(). We use a single future
+ * object, but we want to listen on two pumps with it. Since we must still
+ * adapt from the callable constructed by boost::dcoroutines::make_callback()
+ * (void return) to provide an event listener (bool return), we've adapted
+ * FutureListener for the purpose. The basic idea is that we construct a
+ * distinct instance of FutureListener2 -- binding different instance data --
+ * for each of the pumps. Then, when a pump delivers an LLSD value to either
+ * FutureListener2, it can combine that LLSD with its discriminator to feed
+ * the future object.
+ *
+ * DISCRIM is a template argument so we can use llmake() rather than
+ * having to write our own argument-deducing helper function.
+ */
+template <typename LISTENER, typename DISCRIM>
+class FutureListener2: public FutureListener<LISTENER>
+{
+    typedef FutureListener<LISTENER> super;
+
+public:
+    // instantiated on coroutine stack: the stack about to suspend
+    FutureListener2(const LISTENER& listener, DISCRIM discriminator):
+        super(listener),
+        mDiscrim(discriminator)
+    {}
+
+    // called on main stack: the stack on which event is fired
+    bool operator()(const LLSD& event)
+    {
+        // our future object is defined to accept LLEventWithID
+        super::mListener(LLEventWithID(event, mDiscrim));
+        // tell LLEventPump whether or not event was consumed
+        return super::mConsume;
+    }
+
+private:
+    const DISCRIM mDiscrim;
+};
+
+} // anonymous
+
+namespace llcoro
+{
+
+LLEventWithID postAndSuspend2(const LLSD& event,
+                           const LLEventPumpOrPumpName& requestPump,
+                           const LLEventPumpOrPumpName& replyPump0,
+                           const LLEventPumpOrPumpName& replyPump1,
+                           const LLSD& replyPump0NamePath,
+                           const LLSD& replyPump1NamePath)
+{
+    // declare the future
+    LLCoros::Future<LLEventWithID> future;
+    // either callback will assign a value to this future; listen on
+    // each specified LLEventPump with a callback
+    std::string name(listenerNameForCoro());
+    LLTempBoundListener connection0(
+        replyPump0.getPump().listen(
+            name + "a",
+            llmake<FutureListener2>(future.make_callback(), 0)));
+    LLTempBoundListener connection1(
+        replyPump1.getPump().listen(
+            name + "b",
+            llmake<FutureListener2>(future.make_callback(), 1)));
+    // skip the "post" part if requestPump is default-constructed
+    if (requestPump)
+    {
+        // If either replyPumpNamePath is non-empty, store the corresponding
+        // replyPump name in the request event.
+        LLSD modevent(event);
+        storeToLLSDPath(modevent, replyPump0NamePath,
+                        replyPump0.getPump().getName());
+        storeToLLSDPath(modevent, replyPump1NamePath,
+                        replyPump1.getPump().getName());
+        LL_DEBUGS("lleventcoro") << "postAndSuspend2(): coroutine " << name
+                                 << " posting to " << requestPump.getPump().getName()
+                                 << ": " << modevent << LL_ENDL;
+        requestPump.getPump().post(modevent);
+    }
+    LL_DEBUGS("lleventcoro") << "postAndSuspend2(): coroutine " << name
+                             << " about to wait on LLEventPumps " << replyPump0.getPump().getName()
+                             << ", " << replyPump1.getPump().getName() << LL_ENDL;
+    // calling get() on the future makes us wait for it
+    LLEventWithID value(future.get());
+    LL_DEBUGS("lleventcoro") << "postAndSuspend(): coroutine " << name
+                             << " resuming with (" << value.first << ", " << value.second << ")"
+                             << LL_ENDL;
+    // returning should disconnect both connections
+    return value;
+}
+
 LLSD errorException(const LLEventWithID& result, const std::string& desc)
 {
     // If the result arrived on the error pump (pump 1), instead of
@@ -144,3 +349,5 @@ LLSD errorLog(const LLEventWithID& result, const std::string& desc)
     // A simple return must therefore be from the reply pump (pump 0).
     return result.first;
 }
+
+} // namespace llcoro
diff --git a/indra/llcommon/lleventcoro.h b/indra/llcommon/lleventcoro.h
index abbeeaa373..2105faf861 100755
--- a/indra/llcommon/lleventcoro.h
+++ b/indra/llcommon/lleventcoro.h
@@ -29,11 +29,10 @@
 #if ! defined(LL_LLEVENTCORO_H)
 #define LL_LLEVENTCORO_H
 
-#include <boost/dcoroutine/coroutine.hpp>
-#include <boost/dcoroutine/future.hpp>
 #include <boost/optional.hpp>
 #include <string>
 #include <stdexcept>
+#include <utility>                  // std::pair
 #include "llevents.h"
 #include "llerror.h"
 
@@ -74,111 +73,46 @@ private:
     boost::optional<LLEventPump&> mPump;
 };
 
-/// This is an adapter for a signature like void LISTENER(const LLSD&), which
-/// isn't a valid LLEventPump listener: such listeners should return bool.
-template <typename LISTENER>
-class LLVoidListener
+namespace llcoro
 {
-public:
-    LLVoidListener(const LISTENER& listener):
-        mListener(listener)
-    {}
-    bool operator()(const LLSD& event)
-    {
-        mListener(event);
-        // don't swallow the event, let other listeners see it
-        return false;
-    }
-private:
-    LISTENER mListener;
-};
-
-/// LLVoidListener helper function to infer the type of the LISTENER
-template <typename LISTENER>
-LLVoidListener<LISTENER> voidlistener(const LISTENER& listener)
-{
-    return LLVoidListener<LISTENER>(listener);
-}
-
-namespace LLEventDetail
-{
-    /// Implementation for listenerNameForCoro(), see below
-    LL_COMMON_API std::string listenerNameForCoroImpl(const void* self_id);
 
-    /**
-     * waitForEventOn() permits a coroutine to temporarily listen on an
-     * LLEventPump any number of times. We don't really want to have to ask
-     * the caller to label each such call with a distinct string; the whole
-     * point of waitForEventOn() is to present a nice sequential interface to
-     * the underlying LLEventPump-with-named-listeners machinery. So we'll use
-     * LLEventPump::inventName() to generate a distinct name for each
-     * temporary listener. On the other hand, because a given coroutine might
-     * call waitForEventOn() any number of times, we don't really want to
-     * consume an arbitrary number of generated inventName()s: that namespace,
-     * though large, is nonetheless finite. So we memoize an invented name for
-     * each distinct coroutine instance (each different 'self' object). We
-     * can't know the type of 'self', because it depends on the coroutine
-     * body's signature. So we cast its address to void*, looking for distinct
-     * pointer values. Yes, that means that an early coroutine could cache a
-     * value here, then be destroyed, only to be supplanted by a later
-     * coroutine (of the same or different type), and we'll end up
-     * "recognizing" the second one and reusing the listener name -- but
-     * that's okay, since it won't collide with any listener name used by the
-     * earlier coroutine since that earlier coroutine no longer exists.
-     */
-    template <typename COROUTINE_SELF>
-    std::string listenerNameForCoro(COROUTINE_SELF& self)
-    {
-        return listenerNameForCoroImpl(self.get_id());
-    }
+/**
+ * Yield control from a coroutine for one "mainloop" tick. If your coroutine
+ * runs without suspending for nontrivial time, sprinkle in calls to this
+ * function to avoid stalling the rest of the viewer processing.
+ */
+void suspend();
 
-    /**
-     * Implement behavior described for postAndWait()'s @a replyPumpNamePath
-     * parameter:
-     *
-     * * If <tt>path.isUndefined()</tt>, do nothing.
-     * * If <tt>path.isString()</tt>, @a dest is an LLSD map: store @a value
-     *   into <tt>dest[path.asString()]</tt>.
-     * * If <tt>path.isInteger()</tt>, @a dest is an LLSD array: store @a
-     *   value into <tt>dest[path.asInteger()]</tt>.
-     * * If <tt>path.isArray()</tt>, iteratively apply the rules above to step
-     *   down through the structure of @a dest. The last array entry in @a
-     *   path specifies the entry in the lowest-level structure in @a dest
-     *   into which to store @a value.
-     *
-     * @note
-     * In the degenerate case in which @a path is an empty array, @a dest will
-     * @em become @a value rather than @em containing it.
-     */
-    LL_COMMON_API void storeToLLSDPath(LLSD& dest, const LLSD& path, const LLSD& value);
-} // namespace LLEventDetail
+/**
+ * Yield control from a coroutine for at least the specified number of seconds
+ */
+void suspendUntilTimeout(float seconds);
 
 /**
- * Post specified LLSD event on the specified LLEventPump, then wait for a
+ * Post specified LLSD event on the specified LLEventPump, then suspend for a
  * response on specified other LLEventPump. This is more than mere
  * convenience: the difference between this function and the sequence
  * @code
  * requestPump.post(myEvent);
- * LLSD reply = waitForEventOn(self, replyPump);
+ * LLSD reply = suspendUntilEventOn(replyPump);
  * @endcode
  * is that the sequence above fails if the reply is posted immediately on
  * @a replyPump, that is, before <tt>requestPump.post()</tt> returns. In the
  * sequence above, the running coroutine isn't even listening on @a replyPump
- * until <tt>requestPump.post()</tt> returns and @c waitForEventOn() is
+ * until <tt>requestPump.post()</tt> returns and @c suspendUntilEventOn() is
  * entered. Therefore, the coroutine completely misses an immediate reply
- * event, making it wait indefinitely.
+ * event, making it suspend indefinitely.
  *
- * By contrast, postAndWait() listens on the @a replyPump @em before posting
+ * By contrast, postAndSuspend() listens on the @a replyPump @em before posting
  * the specified LLSD event on the specified @a requestPump.
  *
- * @param self The @c self object passed into a coroutine
  * @param event LLSD data to be posted on @a requestPump
  * @param requestPump an LLEventPump on which to post @a event. Pass either
  * the LLEventPump& or its string name. However, if you pass a
  * default-constructed @c LLEventPumpOrPumpName, we skip the post() call.
- * @param replyPump an LLEventPump on which postAndWait() will listen for a
+ * @param replyPump an LLEventPump on which postAndSuspend() will listen for a
  * reply. Pass either the LLEventPump& or its string name. The calling
- * coroutine will wait until that reply arrives. (If you're concerned about a
+ * coroutine will suspend until that reply arrives. (If you're concerned about a
  * reply that might not arrive, please see also LLEventTimeout.)
  * @param replyPumpNamePath specifies the location within @a event in which to
  * store <tt>replyPump.getName()</tt>. This is a strictly optional convenience
@@ -201,101 +135,29 @@ namespace LLEventDetail
  *   @a replyPumpNamePath specifies the entry in the lowest-level structure in
  *   @a event into which to store <tt>replyPump.getName()</tt>.
  */
-template <typename SELF>
-LLSD postAndWait(SELF& self, const LLSD& event, const LLEventPumpOrPumpName& requestPump,
-                 const LLEventPumpOrPumpName& replyPump, const LLSD& replyPumpNamePath=LLSD())
-{
-    // declare the future
-    boost::dcoroutines::future<LLSD> future(self);
-    // make a callback that will assign a value to the future, and listen on
-    // the specified LLEventPump with that callback
-    std::string listenerName(LLEventDetail::listenerNameForCoro(self));
-    LLTempBoundListener connection(
-        replyPump.getPump().listen(listenerName,
-                                   voidlistener(boost::dcoroutines::make_callback(future))));
-    // skip the "post" part if requestPump is default-constructed
-    if (requestPump)
-    {
-        // If replyPumpNamePath is non-empty, store the replyPump name in the
-        // request event.
-        LLSD modevent(event);
-        LLEventDetail::storeToLLSDPath(modevent, replyPumpNamePath, replyPump.getPump().getName());
-		LL_DEBUGS("lleventcoro") << "postAndWait(): coroutine " << listenerName
-                                 << " posting to " << requestPump.getPump().getName()
-								 << LL_ENDL;
-
-		// *NOTE:Mani - Removed because modevent could contain user's hashed passwd.
-		//                         << ": " << modevent << LL_ENDL;
-        requestPump.getPump().post(modevent);
-    }
-    LL_DEBUGS("lleventcoro") << "postAndWait(): coroutine " << listenerName
-                             << " about to wait on LLEventPump " << replyPump.getPump().getName()
-                             << LL_ENDL;
-    // trying to dereference ("resolve") the future makes us wait for it
-    LLSD value(*future);
-    LL_DEBUGS("lleventcoro") << "postAndWait(): coroutine " << listenerName
-                             << " resuming with " << value << LL_ENDL;
-    // returning should disconnect the connection
-    return value;
-}
+LLSD postAndSuspend(const LLSD& event, const LLEventPumpOrPumpName& requestPump,
+                 const LLEventPumpOrPumpName& replyPump, const LLSD& replyPumpNamePath=LLSD());
 
 /// Wait for the next event on the specified LLEventPump. Pass either the
 /// LLEventPump& or its string name.
-template <typename SELF>
-LLSD waitForEventOn(SELF& self, const LLEventPumpOrPumpName& pump)
+inline
+LLSD suspendUntilEventOn(const LLEventPumpOrPumpName& pump)
 {
-    // This is now a convenience wrapper for postAndWait().
-    return postAndWait(self, LLSD(), LLEventPumpOrPumpName(), pump);
+    // This is now a convenience wrapper for postAndSuspend().
+    return postAndSuspend(LLSD(), LLEventPumpOrPumpName(), pump);
 }
 
-/// return type for two-pump variant of waitForEventOn()
+} // namespace llcoro
+
+/// return type for two-pump variant of suspendUntilEventOn()
 typedef std::pair<LLSD, int> LLEventWithID;
 
-namespace LLEventDetail
+namespace llcoro
 {
-    /**
-     * This helper is specifically for the two-pump version of waitForEventOn().
-     * We use a single future object, but we want to listen on two pumps with it.
-     * Since we must still adapt from (the callable constructed by)
-     * boost::dcoroutines::make_callback() (void return) to provide an event
-     * listener (bool return), we've adapted LLVoidListener for the purpose. The
-     * basic idea is that we construct a distinct instance of WaitForEventOnHelper
-     * -- binding different instance data -- for each of the pumps. Then, when a
-     * pump delivers an LLSD value to either WaitForEventOnHelper, it can combine
-     * that LLSD with its discriminator to feed the future object.
-     */
-    template <typename LISTENER>
-    class WaitForEventOnHelper
-    {
-    public:
-        WaitForEventOnHelper(const LISTENER& listener, int discriminator):
-            mListener(listener),
-            mDiscrim(discriminator)
-        {}
-        // this signature is required for an LLEventPump listener
-        bool operator()(const LLSD& event)
-        {
-            // our future object is defined to accept LLEventWithID
-            mListener(LLEventWithID(event, mDiscrim));
-            // don't swallow the event, let other listeners see it
-            return false;
-        }
-    private:
-        LISTENER mListener;
-        const int mDiscrim;
-    };
-
-    /// WaitForEventOnHelper type-inference helper
-    template <typename LISTENER>
-    WaitForEventOnHelper<LISTENER> wfeoh(const LISTENER& listener, int discriminator)
-    {
-        return WaitForEventOnHelper<LISTENER>(listener, discriminator);
-    }
-} // namespace LLEventDetail
 
 /**
  * This function waits for a reply on either of two specified LLEventPumps.
- * Otherwise, it closely resembles postAndWait(); please see the documentation
+ * Otherwise, it closely resembles postAndSuspend(); please see the documentation
  * for that function for detailed parameter info.
  *
  * While we could have implemented the single-pump variant in terms of this
@@ -310,81 +172,41 @@ namespace LLEventDetail
  * the index of the pump on which it arrived (0 or 1).
  *
  * @note
- * I'd have preferred to overload the name postAndWait() for both signatures.
+ * I'd have preferred to overload the name postAndSuspend() for both signatures.
  * But consider the following ambiguous call:
  * @code
- * postAndWait(self, LLSD(), requestPump, replyPump, "someString");
+ * postAndSuspend(LLSD(), requestPump, replyPump, "someString");
  * @endcode
  * "someString" could be converted to either LLSD (@a replyPumpNamePath for
  * the single-pump function) or LLEventOrPumpName (@a replyPump1 for two-pump
  * function).
  *
- * It seems less burdensome to write postAndWait2() than to write either
+ * It seems less burdensome to write postAndSuspend2() than to write either
  * LLSD("someString") or LLEventOrPumpName("someString").
  */
-template <typename SELF>
-LLEventWithID postAndWait2(SELF& self, const LLSD& event,
+LLEventWithID postAndSuspend2(const LLSD& event,
                            const LLEventPumpOrPumpName& requestPump,
                            const LLEventPumpOrPumpName& replyPump0,
                            const LLEventPumpOrPumpName& replyPump1,
                            const LLSD& replyPump0NamePath=LLSD(),
-                           const LLSD& replyPump1NamePath=LLSD())
-{
-    // declare the future
-    boost::dcoroutines::future<LLEventWithID> future(self);
-    // either callback will assign a value to this future; listen on
-    // each specified LLEventPump with a callback
-    std::string name(LLEventDetail::listenerNameForCoro(self));
-    LLTempBoundListener connection0(
-        replyPump0.getPump().listen(name + "a",
-                               LLEventDetail::wfeoh(boost::dcoroutines::make_callback(future), 0)));
-    LLTempBoundListener connection1(
-        replyPump1.getPump().listen(name + "b",
-                               LLEventDetail::wfeoh(boost::dcoroutines::make_callback(future), 1)));
-    // skip the "post" part if requestPump is default-constructed
-    if (requestPump)
-    {
-        // If either replyPumpNamePath is non-empty, store the corresponding
-        // replyPump name in the request event.
-        LLSD modevent(event);
-        LLEventDetail::storeToLLSDPath(modevent, replyPump0NamePath,
-                                       replyPump0.getPump().getName());
-        LLEventDetail::storeToLLSDPath(modevent, replyPump1NamePath,
-                                       replyPump1.getPump().getName());
-        LL_DEBUGS("lleventcoro") << "postAndWait2(): coroutine " << name
-                                 << " posting to " << requestPump.getPump().getName()
-                                 << ": " << modevent << LL_ENDL;
-        requestPump.getPump().post(modevent);
-    }
-    LL_DEBUGS("lleventcoro") << "postAndWait2(): coroutine " << name
-                             << " about to wait on LLEventPumps " << replyPump0.getPump().getName()
-                             << ", " << replyPump1.getPump().getName() << LL_ENDL;
-    // trying to dereference ("resolve") the future makes us wait for it
-    LLEventWithID value(*future);
-    LL_DEBUGS("lleventcoro") << "postAndWait(): coroutine " << name
-                             << " resuming with (" << value.first << ", " << value.second << ")"
-                             << LL_ENDL;
-    // returning should disconnect both connections
-    return value;
-}
+                           const LLSD& replyPump1NamePath=LLSD());
 
 /**
  * Wait for the next event on either of two specified LLEventPumps.
  */
-template <typename SELF>
+inline
 LLEventWithID
-waitForEventOn(SELF& self,
-               const LLEventPumpOrPumpName& pump0, const LLEventPumpOrPumpName& pump1)
+suspendUntilEventOn(const LLEventPumpOrPumpName& pump0, const LLEventPumpOrPumpName& pump1)
 {
-    // This is now a convenience wrapper for postAndWait2().
-    return postAndWait2(self, LLSD(), LLEventPumpOrPumpName(), pump0, pump1);
+    // This is now a convenience wrapper for postAndSuspend2().
+    return postAndSuspend2(LLSD(), LLEventPumpOrPumpName(), pump0, pump1);
 }
 
 /**
- * Helper for the two-pump variant of waitForEventOn(), e.g.:
+ * Helper for the two-pump variant of suspendUntilEventOn(), e.g.:
  *
  * @code
- * LLSD reply = errorException(waitForEventOn(self, replyPump, errorPump),
+ * LLSD reply = errorException(suspendUntilEventOn(replyPump, errorPump),
  *                             "error response from login.cgi");
  * @endcode
  *
@@ -400,6 +222,8 @@ waitForEventOn(SELF& self,
  */
 LLSD errorException(const LLEventWithID& result, const std::string& desc);
 
+} // namespace llcoro
+
 /**
  * Exception thrown by errorException(). We don't call this LLEventError
  * because it's not an error in event processing: rather, this exception
@@ -420,12 +244,17 @@ private:
     LLSD mData;
 };
 
+namespace llcoro
+{
+
 /**
  * Like errorException(), save that this trips a fatal error using LL_ERRS
  * rather than throwing an exception.
  */
 LL_COMMON_API LLSD errorLog(const LLEventWithID& result, const std::string& desc);
 
+} // namespace llcoro
+
 /**
  * Certain event APIs require the name of an LLEventPump on which they should
  * post results. While it works to invent a distinct name and let
@@ -437,7 +266,7 @@ LL_COMMON_API LLSD errorLog(const LLEventWithID& result, const std::string& desc
  * 2. Provide its actual name to the event API in question as the name of the
  *    reply LLEventPump.
  * 3. Initiate the request to the event API.
- * 4. Call your LLEventTempStream's wait() method to wait for the reply.
+ * 4. Call your LLEventTempStream's suspend() method to suspend for the reply.
  * 5. Let the LLCoroEventPump go out of scope.
  */
 class LL_COMMON_API LLCoroEventPump
@@ -454,26 +283,16 @@ public:
 
     /**
      * Wait for an event on this LLEventPump.
-     *
-     * @note
-     * The other major usage pattern we considered was to bind @c self at
-     * LLCoroEventPump construction time, which would avoid passing the
-     * parameter to each wait() call. But if we were going to bind @c self as
-     * a class member, we'd need to specify a class template parameter
-     * indicating its type. The big advantage of passing it to the wait() call
-     * is that the type can be implicit.
      */
-    template <typename SELF>
-    LLSD wait(SELF& self)
+    LLSD suspend()
     {
-        return waitForEventOn(self, mPump);
+        return llcoro::suspendUntilEventOn(mPump);
     }
 
-    template <typename SELF>
-    LLSD postAndWait(SELF& self, const LLSD& event, const LLEventPumpOrPumpName& requestPump,
+    LLSD postAndSuspend(const LLSD& event, const LLEventPumpOrPumpName& requestPump,
                      const LLSD& replyPumpNamePath=LLSD())
     {
-        return ::postAndWait(self, event, requestPump, mPump, replyPumpNamePath);
+        return llcoro::postAndSuspend(event, requestPump, mPump, replyPumpNamePath);
     }
 
 private:
@@ -509,57 +328,51 @@ public:
     /// request pump 1
     LLEventPump& getPump1() { return mPump1; }
 
-    /// waitForEventOn(self, either of our two LLEventPumps)
-    template <typename SELF>
-    LLEventWithID wait(SELF& self)
+    /// suspendUntilEventOn(either of our two LLEventPumps)
+    LLEventWithID suspend()
     {
-        return waitForEventOn(self, mPump0, mPump1);
+        return llcoro::suspendUntilEventOn(mPump0, mPump1);
     }
 
-    /// errorException(wait(self))
-    template <typename SELF>
-    LLSD waitWithException(SELF& self)
+    /// errorException(suspend())
+    LLSD suspendWithException()
     {
-        return errorException(wait(self), std::string("Error event on ") + getName1());
+        return llcoro::errorException(suspend(), std::string("Error event on ") + getName1());
     }
 
-    /// errorLog(wait(self))
-    template <typename SELF>
-    LLSD waitWithLog(SELF& self)
+    /// errorLog(suspend())
+    LLSD suspendWithLog()
     {
-        return errorLog(wait(self), std::string("Error event on ") + getName1());
+        return llcoro::errorLog(suspend(), std::string("Error event on ") + getName1());
     }
 
-    template <typename SELF>
-    LLEventWithID postAndWait(SELF& self, const LLSD& event,
+    LLEventWithID postAndSuspend(const LLSD& event,
                               const LLEventPumpOrPumpName& requestPump,
                               const LLSD& replyPump0NamePath=LLSD(),
                               const LLSD& replyPump1NamePath=LLSD())
     {
-        return postAndWait2(self, event, requestPump, mPump0, mPump1,
-                            replyPump0NamePath, replyPump1NamePath);
+        return llcoro::postAndSuspend2(event, requestPump, mPump0, mPump1,
+                                    replyPump0NamePath, replyPump1NamePath);
     }
 
-    template <typename SELF>
-    LLSD postAndWaitWithException(SELF& self, const LLSD& event,
+    LLSD postAndSuspendWithException(const LLSD& event,
                                   const LLEventPumpOrPumpName& requestPump,
                                   const LLSD& replyPump0NamePath=LLSD(),
                                   const LLSD& replyPump1NamePath=LLSD())
     {
-        return errorException(postAndWait(self, event, requestPump,
-                                          replyPump0NamePath, replyPump1NamePath),
-                              std::string("Error event on ") + getName1());
+        return llcoro::errorException(postAndSuspend(event, requestPump,
+                                                  replyPump0NamePath, replyPump1NamePath),
+                                      std::string("Error event on ") + getName1());
     }
 
-    template <typename SELF>
-    LLSD postAndWaitWithLog(SELF& self, const LLSD& event,
+    LLSD postAndSuspendWithLog(const LLSD& event,
                             const LLEventPumpOrPumpName& requestPump,
                             const LLSD& replyPump0NamePath=LLSD(),
                             const LLSD& replyPump1NamePath=LLSD())
     {
-        return errorLog(postAndWait(self, event, requestPump,
-                                    replyPump0NamePath, replyPump1NamePath),
-                        std::string("Error event on ") + getName1());
+        return llcoro::errorLog(postAndSuspend(event, requestPump,
+                                            replyPump0NamePath, replyPump1NamePath),
+                                std::string("Error event on ") + getName1());
     }
 
 private:
diff --git a/indra/llcommon/llevents.cpp b/indra/llcommon/llevents.cpp
index 1c928b3db8..645c29d770 100755
--- a/indra/llcommon/llevents.cpp
+++ b/indra/llcommon/llevents.cpp
@@ -132,6 +132,17 @@ LLEventPump& LLEventPumps::obtain(const std::string& name)
     return *newInstance;
 }
 
+bool LLEventPumps::post(const std::string&name, const LLSD&message)
+{
+    PumpMap::iterator found = mPumpMap.find(name);
+
+    if (found == mPumpMap.end())
+        return false;
+
+    return (*found).second->post(message);
+}
+
+
 void LLEventPumps::flush()
 {
     // Flush every known LLEventPump instance. Leave it up to each instance to
@@ -497,6 +508,43 @@ bool LLEventStream::post(const LLSD& event)
 }
 
 /*****************************************************************************
+ *   LLEventMailDrop
+ *****************************************************************************/
+bool LLEventMailDrop::post(const LLSD& event)
+{
+    bool posted = false;
+    
+    if (!mSignal->empty())
+        posted = LLEventStream::post(event);
+    
+    if (!posted)
+    {   // if the event was not handled we will save it for later so that it can 
+        // be posted to any future listeners when they attach.
+        mEventHistory.push_back(event);
+    }
+    
+    return posted;
+}
+
+LLBoundListener LLEventMailDrop::listen_impl(const std::string& name,
+                                    const LLEventListener& listener,
+                                    const NameList& after,
+                                    const NameList& before)
+{
+    if (!mEventHistory.empty())
+    {
+        if (listener(mEventHistory.front()))
+        {
+            mEventHistory.pop_front();
+        }
+    }
+
+    return LLEventStream::listen_impl(name, listener, after, before);
+
+}
+
+
+/*****************************************************************************
 *   LLEventQueue
 *****************************************************************************/
 bool LLEventQueue::post(const LLSD& event)
diff --git a/indra/llcommon/llevents.h b/indra/llcommon/llevents.h
index 0cbd1da32d..6175329a9d 100755
--- a/indra/llcommon/llevents.h
+++ b/indra/llcommon/llevents.h
@@ -217,6 +217,18 @@ public:
      * an instance without conferring @em ownership.
      */
     LLEventPump& obtain(const std::string& name);
+
+    /**
+     * Find the named LLEventPump instance. If it exists post the message to it.
+     * If the pump does not exist, do nothing.
+     * 
+     * returns the result of the LLEventPump::post. If no pump exists returns false.
+     * 
+     * This is syntactically similar to LLEventPumps::instance().post(name, message),
+     * however if the pump does not already exist it will not be created.
+     */
+    bool post(const std::string&, const LLSD&);
+
     /**
      * Flush all known LLEventPump instances
      */
@@ -496,7 +508,7 @@ public:
         // at the boost::bind object itself before that happens.
         return LLEventDetail::visit_and_connect(name,
                                                 listener,
-                                                boost::bind(&LLEventPump::listen_impl,
+                                                boost::bind(&LLEventPump::listen_invoke,
                                                             this,
                                                             name,
                                                             _1,
@@ -541,13 +553,23 @@ private:
 
     virtual void reset();
 
+
+
 private:
-    virtual LLBoundListener listen_impl(const std::string& name, const LLEventListener&,
-                                        const NameList& after,
-                                        const NameList& before);
+    LLBoundListener listen_invoke(const std::string& name, const LLEventListener& listener,
+        const NameList& after,
+        const NameList& before)
+    {
+        return this->listen_impl(name, listener, after, before);
+    }
+
     std::string mName;
 
 protected:
+    virtual LLBoundListener listen_impl(const std::string& name, const LLEventListener&,
+                                        const NameList& after,
+                                        const NameList& before);
+    
     /// implement the dispatching
     boost::shared_ptr<LLStandardSignal> mSignal;
 
@@ -586,10 +608,39 @@ public:
 };
 
 /*****************************************************************************
+ *   LLEventMailDrop
+ *****************************************************************************/
+/**
+ * LLEventMailDrop is a specialization of LLEventStream. Events are posted normally, 
+ * however if no listeners return that they have handled the event it is placed in 
+ * a queue. Subsequent attaching listeners will receive stored events from the queue 
+ * until a listener indicates that the event has been handled.  In order to receive 
+ * multiple events from a mail drop the listener must disconnect and reconnect.
+ */
+class LL_COMMON_API LLEventMailDrop : public LLEventStream
+{
+public:
+    LLEventMailDrop(const std::string& name, bool tweak = false) : LLEventStream(name, tweak) {}
+    virtual ~LLEventMailDrop() {}
+    
+    /// Post an event to all listeners
+    virtual bool post(const LLSD& event);
+    
+protected:
+    virtual LLBoundListener listen_impl(const std::string& name, const LLEventListener&,
+                                        const NameList& after,
+                                        const NameList& before);
+
+private:
+    typedef std::list<LLSD> EventList;
+    EventList mEventHistory;
+};
+
+/*****************************************************************************
 *   LLEventQueue
 *****************************************************************************/
 /**
- * LLEventQueue isa LLEventPump whose post() method defers calling registered
+ * LLEventQueue is a LLEventPump whose post() method defers calling registered
  * listeners until flush() is called.
  */
 class LL_COMMON_API LLEventQueue: public LLEventPump
diff --git a/indra/llcommon/llmake.h b/indra/llcommon/llmake.h
new file mode 100644
index 0000000000..9a662a0640
--- /dev/null
+++ b/indra/llcommon/llmake.h
@@ -0,0 +1,63 @@
+/**
+ * @file   llmake.h
+ * @author Nat Goodspeed
+ * @date   2015-12-18
+ * @brief  Generic llmake<Template>(arg) function to instantiate
+ *         Template<decltype(arg)>(arg).
+ *
+ *         Many of our class templates have an accompanying helper function to
+ *         make an instance with arguments of arbitrary type. llmake()
+ *         eliminates the need to declare a new helper function for every such
+ *         class template.
+ * 
+ *         also relevant:
+ *
+ *         Template parameter deduction for constructors
+ *         http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2015/p0091r0.html
+ *
+ *         https://github.com/viboes/std-make
+ *
+ *         but obviously we're not there yet.
+ *
+ * $LicenseInfo:firstyear=2015&license=viewerlgpl$
+ * Copyright (c) 2015, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+#if ! defined(LL_LLMAKE_H)
+#define LL_LLMAKE_H
+
+/*==========================================================================*|
+// When we allow ourselves to compile with C++11 features enabled, this form
+// should generically handle an arbitrary number of arguments.
+
+template <template<typename...> class CLASS_TEMPLATE, typename... ARGS>
+CLASS_TEMPLATE<ARGS...> llmake(ARGS && ... args)
+{
+    return CLASS_TEMPLATE<ARGS...>(std::forward<ARGS>(args)...);
+}
+|*==========================================================================*/
+
+// As of 2015-12-18, this is what we'll use instead. Add explicit overloads
+// for different numbers of template parameters as use cases arise.
+
+/**
+ * Usage: llmake<SomeTemplate>(arg)
+ *
+ * Deduces the type T of 'arg' and returns an instance of SomeTemplate<T>
+ * initialized with 'arg'. Assumes a constructor accepting T (by value,
+ * reference or whatever).
+ */
+template <template<typename> class CLASS_TEMPLATE, typename ARG1>
+CLASS_TEMPLATE<ARG1> llmake(const ARG1& arg1)
+{
+    return CLASS_TEMPLATE<ARG1>(arg1);
+}
+
+template <template<typename, typename> class CLASS_TEMPLATE, typename ARG1, typename ARG2>
+CLASS_TEMPLATE<ARG1, ARG2> llmake(const ARG1& arg1, const ARG2& arg2)
+{
+    return CLASS_TEMPLATE<ARG1, ARG2>(arg1, arg2);
+}
+
+#endif /* ! defined(LL_LLMAKE_H) */
diff --git a/indra/llcommon/llprocess.cpp b/indra/llcommon/llprocess.cpp
index e0aa30cc1a..44f56daf2d 100755
--- a/indra/llcommon/llprocess.cpp
+++ b/indra/llcommon/llprocess.cpp
@@ -710,7 +710,7 @@ LLProcess::LLProcess(const LLSDOrParams& params):
 
 		// Tie the lifespan of this child process to the lifespan of our APR
 		// pool: on destruction of the pool, forcibly kill the process. Tell
-		// APR to try SIGTERM and wait 3 seconds. If that didn't work, use
+		// APR to try SIGTERM and suspend 3 seconds. If that didn't work, use
 		// SIGKILL.
 		apr_pool_note_subprocess(gAPRPoolp, &mProcess, APR_KILL_AFTER_TIMEOUT);
 |*==========================================================================*/
@@ -989,9 +989,9 @@ void LLProcess::handle_status(int reason, int status)
 //	wi->rv = apr_proc_wait(wi->child, &wi->rc, &wi->why, APR_NOWAIT);
 	// It's just wrong to call apr_proc_wait() here. The only way APR knows to
 	// call us with APR_OC_REASON_DEATH is that it's already reaped this child
-	// process, so calling wait() will only produce "huh?" from the OS. We
+	// process, so calling suspend() will only produce "huh?" from the OS. We
 	// must rely on the status param passed in, which unfortunately comes
-	// straight from the OS wait() call, which means we have to decode it by
+	// straight from the OS suspend() call, which means we have to decode it by
 	// hand.
 	mStatus = interpret_status(status);
 	LL_INFOS("LLProcess") << getStatusString() << LL_ENDL;
diff --git a/indra/llcommon/llrefcount.h b/indra/llcommon/llrefcount.h
index 3836a9b5fb..1107973569 100755
--- a/indra/llcommon/llrefcount.h
+++ b/indra/llcommon/llrefcount.h
@@ -144,14 +144,9 @@ private:
 };
 
 /**
- * intrusive pointer support
- * this allows you to use boost::intrusive_ptr with any LLRefCount-derived type
- */
-/**
  * intrusive pointer support for LLThreadSafeRefCount
  * this allows you to use boost::intrusive_ptr with any LLThreadSafeRefCount-derived type
  */
-
 inline void intrusive_ptr_add_ref(LLThreadSafeRefCount* p) 
 {
 	p->ref();
@@ -162,6 +157,10 @@ inline void intrusive_ptr_release(LLThreadSafeRefCount* p)
 	p->unref(); 
 }
 
+/**
+ * intrusive pointer support
+ * this allows you to use boost::intrusive_ptr with any LLRefCount-derived type
+ */
 inline void intrusive_ptr_add_ref(LLRefCount* p) 
 {
 	p->ref();
diff --git a/indra/llcommon/llsdjson.cpp b/indra/llcommon/llsdjson.cpp
new file mode 100644
index 0000000000..8caaaee534
--- /dev/null
+++ b/indra/llcommon/llsdjson.cpp
@@ -0,0 +1,126 @@
+/** 
+ * @file llsdjson.cpp
+ * @brief LLSD flexible data system
+ *
+ * $LicenseInfo:firstyear=2015&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2015, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+// Must turn on conditional declarations in header file so definitions end up
+// with proper linkage.
+#define LLSD_DEBUG_INFO
+#include "linden_common.h"
+
+#include "llsdjson.h"
+
+#include "llerror.h"
+#include "../llmath/llmath.h"
+
+//=========================================================================
+LLSD LlsdFromJson(const Json::Value &val)
+{
+    LLSD result;
+
+    switch (val.type())
+    {
+    default:
+    case Json::nullValue:
+        break;
+    case Json::intValue:
+        result = LLSD(static_cast<LLSD::Integer>(val.asInt()));
+        break;
+    case Json::uintValue:
+        result = LLSD(static_cast<LLSD::Integer>(val.asUInt()));
+        break;
+    case Json::realValue:
+        result = LLSD(static_cast<LLSD::Real>(val.asDouble()));
+        break;
+    case Json::stringValue:
+        result = LLSD(static_cast<LLSD::String>(val.asString()));
+        break;
+    case Json::booleanValue:
+        result = LLSD(static_cast<LLSD::Boolean>(val.asBool()));
+        break;
+    case Json::arrayValue:
+        result = LLSD::emptyArray();
+        for (Json::ValueConstIterator it = val.begin(); it != val.end(); ++it)
+        {
+            result.append(LlsdFromJson((*it)));
+        }
+        break;
+    case Json::objectValue:
+        result = LLSD::emptyMap();
+        for (Json::ValueConstIterator it = val.begin(); it != val.end(); ++it)
+        {
+            result[it.memberName()] = LlsdFromJson((*it));
+        }
+        break;
+    }
+    return result;
+}
+
+//=========================================================================
+Json::Value LlsdToJson(const LLSD &val)
+{
+    Json::Value result;
+
+    switch (val.type())
+    {
+    case LLSD::TypeUndefined:
+        result = Json::Value::null;
+        break;
+    case LLSD::TypeBoolean:
+        result = Json::Value(static_cast<bool>(val.asBoolean()));
+        break;
+    case LLSD::TypeInteger:
+        result = Json::Value(static_cast<int>(val.asInteger()));
+        break;
+    case LLSD::TypeReal:
+        result = Json::Value(static_cast<double>(val.asReal()));
+        break;
+    case LLSD::TypeURI:
+    case LLSD::TypeDate:
+    case LLSD::TypeUUID:
+    case LLSD::TypeString:
+        result = Json::Value(val.asString());
+        break;
+    case LLSD::TypeMap:
+        result = Json::Value(Json::objectValue);
+        for (LLSD::map_const_iterator it = val.beginMap(); it != val.endMap(); ++it)
+        {
+            result[it->first] = LlsdToJson(it->second);
+        }
+        break;
+    case LLSD::TypeArray:
+        result = Json::Value(Json::arrayValue);
+        for (LLSD::array_const_iterator it = val.beginArray(); it != val.endArray(); ++it)
+        {
+            result.append(LlsdToJson(*it));
+        }
+        break;
+    case LLSD::TypeBinary:
+    default:
+        LL_ERRS("LlsdToJson") << "Unsupported conversion to JSON from LLSD type (" << val.type() << ")." << LL_ENDL;
+        break;
+    }
+
+    return result;
+}
diff --git a/indra/llcommon/llsdjson.h b/indra/llcommon/llsdjson.h
new file mode 100644
index 0000000000..2be7112404
--- /dev/null
+++ b/indra/llcommon/llsdjson.h
@@ -0,0 +1,77 @@
+/** 
+ * @file llsdjson.cpp
+ * @brief LLSD flexible data system
+ *
+ * $LicenseInfo:firstyear=2015&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2015, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#ifndef LL_LLSDJSON_H
+#define LL_LLSDJSON_H
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "stdtypes.h"
+
+#include "llsd.h"
+#include "value.h"
+
+/// Convert a parsed JSON structure into LLSD maintaining member names and 
+/// array indexes.
+/// JSON/JavaScript types are converted as follows:
+/// 
+/// JSON Type     | LLSD Type
+/// --------------+--------------
+///  null         |  undefined
+///  integer      |  LLSD::Integer
+///  unsigned     |  LLSD::Integer
+///  real/numeric |  LLSD::Real
+///  string       |  LLSD::String
+///  boolean      |  LLSD::Boolean
+///  array        |  LLSD::Array
+///  object       |  LLSD::Map
+///  
+/// For maps and arrays child entries will be converted and added to the structure.
+/// Order is preserved for an array but not for objects.
+LLSD LlsdFromJson(const Json::Value &val);
+
+/// Convert an LLSD object into Parsed JSON object maintaining member names and 
+/// array indexs.
+/// 
+/// Types are converted as follows:
+/// LLSD Type     |  JSON Type
+/// --------------+----------------
+/// TypeUndefined | null
+/// TypeBoolean   | boolean
+/// TypeInteger   | integer
+/// TypeReal      | real/numeric
+/// TypeString    | string
+/// TypeURI       | string
+/// TypeDate      | string
+/// TypeUUID      | string
+/// TypeMap       | object
+/// TypeArray     | array
+/// TypeBinary    | unsupported 
+Json::Value LlsdToJson(const LLSD &val);
+
+#endif // LL_LLSDJSON_H
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index 0177f48bf5..393f6d7a8c 100755
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -1394,6 +1394,7 @@ BOOL LLStringUtilBase<T>::containsNonprintable(const string_type& string)
 	return rv;
 }
 
+// *TODO: reimplement in terms of algorithm 
 //static
 template<class T> 
 void LLStringUtilBase<T>::stripNonprintable(string_type& string)
@@ -1427,6 +1428,7 @@ void LLStringUtilBase<T>::stripNonprintable(string_type& string)
 	delete []c_string;
 }
 
+// *TODO: reimplement in terms of algorithm 
 template<class T>
 std::basic_string<T> LLStringUtilBase<T>::quote(const string_type& str,
 												const string_type& triggers,
diff --git a/indra/llcommon/tests/lleventcoro_test.cpp b/indra/llcommon/tests/lleventcoro_test.cpp
index 2096807e53..a459d17fb8 100755
--- a/indra/llcommon/tests/lleventcoro_test.cpp
+++ b/indra/llcommon/tests/lleventcoro_test.cpp
@@ -59,17 +59,17 @@
 //  http://www.boost.org/LICENSE_1_0.txt)
 /*****************************************************************************/
 
+#define BOOST_RESULT_OF_USE_TR1 1
 // On some platforms, Boost.Coroutine must #define magic symbols before
 // #including platform-API headers. Naturally, that's ineffective unless the
 // Boost.Coroutine #include is the *first* #include of the platform header.
 // That means that client code must generally #include Boost.Coroutine headers
 // before anything else.
 #include <boost/dcoroutine/coroutine.hpp>
-// Normally, lleventcoro.h obviates future.hpp. We only include this because
-// we implement a "by hand" test of future functionality.
-#include <boost/dcoroutine/future.hpp>
 #include <boost/bind.hpp>
 #include <boost/range.hpp>
+#include <boost/utility.hpp>
+#include <boost/shared_ptr.hpp>
 
 #include "linden_common.h"
 
@@ -82,9 +82,12 @@
 #include "llevents.h"
 #include "tests/wrapllerrs.h"
 #include "stringize.h"
+#include "llcoros.h"
 #include "lleventcoro.h"
 #include "../test/debug.h"
 
+using namespace llcoro;
+
 /*****************************************************************************
 *   from the banana.cpp example program borrowed for test<1>()
 *****************************************************************************/
@@ -121,13 +124,10 @@ typedef coroutine<std::string::iterator(void)> match_coroutine_type;
 /*****************************************************************************
 *   Test helpers
 *****************************************************************************/
-// I suspect this will be typical of coroutines used in Linden software
-typedef boost::dcoroutines::coroutine<void()> coroutine_type;
-
 /// Simulate an event API whose response is immediate: sent on receipt of the
 /// initial request, rather than after some delay. This is the case that
-/// distinguishes postAndWait() from calling post(), then calling
-/// waitForEventOn().
+/// distinguishes postAndSuspend() from calling post(), then calling
+/// suspendUntilEventOn().
 class ImmediateAPI
 {
 public:
@@ -162,306 +162,7 @@ private:
 *****************************************************************************/
 namespace tut
 {
-    struct coroutine_data
-    {
-        // Define coroutine bodies as methods here so they can use ensure*()
-
-        void explicit_wait(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                // ... do whatever preliminary stuff must happen ...
-
-                // declare the future
-                boost::dcoroutines::future<LLSD> future(self);
-                // tell the future what to wait for
-                LLTempBoundListener connection(
-                    LLEventPumps::instance().obtain("source").listen("coro", voidlistener(boost::dcoroutines::make_callback(future))));
-                ensure("Not yet", ! future);
-                // attempting to dereference ("resolve") the future causes the calling
-                // coroutine to wait for it
-                debug("about to wait");
-                result = *future;
-                ensure("Got it", future);
-            }
-            END
-        }
-
-        void waitForEventOn1(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                result = waitForEventOn(self, "source");
-            }
-            END
-        }
-
-        void waitForEventOn2(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLEventWithID pair = waitForEventOn(self, "reply", "error");
-                result = pair.first;
-                which  = pair.second;
-                debug(STRINGIZE("result = " << result << ", which = " << which));
-            }
-            END
-        }
-
-        void postAndWait1(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                result = postAndWait(self,
-                                     LLSDMap("value", 17),       // request event
-                                     immediateAPI.getPump(),     // requestPump
-                                     "reply1",                   // replyPump
-                                     "reply");                   // request["reply"] = name
-            }
-            END
-        }
-
-        void postAndWait2(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLEventWithID pair = ::postAndWait2(self,
-                                                    LLSDMap("value", 18),
-                                                    immediateAPI.getPump(),
-                                                    "reply2",
-                                                    "error2",
-                                                    "reply",
-                                                    "error");
-                result = pair.first;
-                which  = pair.second;
-                debug(STRINGIZE("result = " << result << ", which = " << which));
-            }
-            END
-        }
-
-        void postAndWait2_1(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLEventWithID pair = ::postAndWait2(self,
-                                                    LLSDMap("value", 18)("fail", LLSD()),
-                                                    immediateAPI.getPump(),
-                                                    "reply2",
-                                                    "error2",
-                                                    "reply",
-                                                    "error");
-                result = pair.first;
-                which  = pair.second;
-                debug(STRINGIZE("result = " << result << ", which = " << which));
-            }
-            END
-        }
-
-        void coroPump(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPump waiter;
-                replyName = waiter.getName();
-                result = waiter.wait(self);
-            }
-            END
-        }
-
-        void coroPumpPost(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPump waiter;
-                result = waiter.postAndWait(self, LLSDMap("value", 17),
-                                            immediateAPI.getPump(), "reply");
-            }
-            END
-        }
-
-        void coroPumps(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                replyName = waiter.getName0();
-                errorName = waiter.getName1();
-                LLEventWithID pair(waiter.wait(self));
-                result = pair.first;
-                which  = pair.second;
-            }
-            END
-        }
-
-        void coroPumpsNoEx(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                replyName = waiter.getName0();
-                errorName = waiter.getName1();
-                result = waiter.waitWithException(self);
-            }
-            END
-        }
-
-        void coroPumpsEx(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                replyName = waiter.getName0();
-                errorName = waiter.getName1();
-                try
-                {
-                    result = waiter.waitWithException(self);
-                    debug("no exception");
-                }
-                catch (const LLErrorEvent& e)
-                {
-                    debug(STRINGIZE("exception " << e.what()));
-                    errordata = e.getData();
-                }
-            }
-            END
-        }
-
-        void coroPumpsNoLog(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                replyName = waiter.getName0();
-                errorName = waiter.getName1();
-                result = waiter.waitWithLog(self);
-            }
-            END
-        }
-
-        void coroPumpsLog(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                replyName = waiter.getName0();
-                errorName = waiter.getName1();
-                WrapLLErrs capture;
-                try
-                {
-                    result = waiter.waitWithLog(self);
-                    debug("no exception");
-                }
-                catch (const WrapLLErrs::FatalException& e)
-                {
-                    debug(STRINGIZE("exception " << e.what()));
-                    threw = e.what();
-                }
-            }
-            END
-        }
-
-        void coroPumpsPost(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                LLEventWithID pair(waiter.postAndWait(self, LLSDMap("value", 23),
-                                                      immediateAPI.getPump(), "reply", "error"));
-                result = pair.first;
-                which  = pair.second;
-            }
-            END
-        }
-
-        void coroPumpsPost_1(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                LLEventWithID pair(
-                    waiter.postAndWait(self, LLSDMap("value", 23)("fail", LLSD()),
-                                       immediateAPI.getPump(), "reply", "error"));
-                result = pair.first;
-                which  = pair.second;
-            }
-            END
-        }
-
-        void coroPumpsPostNoEx(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                result = waiter.postAndWaitWithException(self, LLSDMap("value", 8),
-                                                         immediateAPI.getPump(), "reply", "error");
-            }
-            END
-        }
-
-        void coroPumpsPostEx(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                try
-                {
-                    result = waiter.postAndWaitWithException(self,
-                        LLSDMap("value", 9)("fail", LLSD()),
-                        immediateAPI.getPump(), "reply", "error");
-                    debug("no exception");
-                }
-                catch (const LLErrorEvent& e)
-                {
-                    debug(STRINGIZE("exception " << e.what()));
-                    errordata = e.getData();
-                }
-            }
-            END
-        }
-
-        void coroPumpsPostNoLog(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                result = waiter.postAndWaitWithLog(self, LLSDMap("value", 30),
-                                                   immediateAPI.getPump(), "reply", "error");
-            }
-            END
-        }
-
-        void coroPumpsPostLog(coroutine_type::self& self)
-        {
-            BEGIN
-            {
-                LLCoroEventPumps waiter;
-                WrapLLErrs capture;
-                try
-                {
-                    result = waiter.postAndWaitWithLog(self,
-                        LLSDMap("value", 31)("fail", LLSD()),
-                        immediateAPI.getPump(), "reply", "error");
-                    debug("no exception");
-                }
-                catch (const WrapLLErrs::FatalException& e)
-                {
-                    debug(STRINGIZE("exception " << e.what()));
-                    threw = e.what();
-                }
-            }
-            END
-        }
-
-        void ensure_done(coroutine_type& coro)
-        {
-            ensure("coroutine complete", ! coro);
-        }
-
-        ImmediateAPI immediateAPI;
-        std::string replyName, errorName, threw;
-        LLSD result, errordata;
-        int which;
-    };
+    struct coroutine_data {};
     typedef test_group<coroutine_data> coroutine_group;
     typedef coroutine_group::object object;
     coroutine_group coroutinegrp("coroutine");
@@ -511,54 +212,122 @@ namespace tut
         ensure("done", ! matcher);
     }
 
+    // use static data so we can intersperse coroutine functions with the
+    // tests that engage them
+    ImmediateAPI immediateAPI;
+    std::string replyName, errorName, threw, stringdata;
+    LLSD result, errordata;
+    int which;
+
+    // reinit vars at the start of each test
+    void clear()
+    {
+        replyName.clear();
+        errorName.clear();
+        threw.clear();
+        stringdata.clear();
+        result = LLSD();
+        errordata = LLSD();
+        which = 0;
+    }
+
+    void explicit_wait(boost::shared_ptr<LLCoros::Future<std::string>::callback_t>& cbp)
+    {
+        BEGIN
+        {
+            // The point of this test is to verify / illustrate suspending a
+            // coroutine for something other than an LLEventPump. In other
+            // words, this shows how to adapt to any async operation that
+            // provides a callback-style notification (and prove that it
+            // works).
+
+            LLCoros::Future<std::string> future;
+            // get the callback from that future
+            LLCoros::Future<std::string>::callback_t callback(future.make_callback());
+
+            // Perhaps we would send a request to a remote server and arrange
+            // for 'callback' to be called on response. Of course that might
+            // involve an adapter object from the actual callback signature to
+            // the signature of 'callback' -- in this case, void(std::string).
+            // For test purposes, instead of handing 'callback' (or the
+            // adapter) off to some I/O subsystem, we'll just pass it back to
+            // our caller.
+            cbp.reset(new LLCoros::Future<std::string>::callback_t(callback));
+
+            ensure("Not yet", ! future);
+            // calling get() on the future causes us to suspend
+            debug("about to suspend");
+            stringdata = future.get();
+            ensure("Got it", bool(future));
+        }
+        END
+    }
+
     template<> template<>
     void object::test<2>()
     {
+        clear();
         set_test_name("explicit_wait");
         DEBUG;
 
         // Construct the coroutine instance that will run explicit_wait.
-        // Pass the ctor a callable that accepts the coroutine_type::self
-        // param passed by the library.
-        coroutine_type coro(boost::bind(&coroutine_data::explicit_wait, this, _1));
-        // Start the coroutine
-        coro(std::nothrow);
-        // When the coroutine waits for the event pump, it returns here.
-        debug("about to send");
-        // Satisfy the wait.
-        LLEventPumps::instance().obtain("source").post("received");
-        // Now wait for the coroutine to complete.
-        ensure_done(coro);
+        boost::shared_ptr<LLCoros::Future<std::string>::callback_t> respond;
+        LLCoros::instance().launch("test<2>",
+                                   boost::bind(explicit_wait, boost::ref(respond)));
+        // When the coroutine waits for the future, it returns here.
+        debug("about to respond");
+        // Now we're the I/O subsystem delivering a result. This immediately
+        // transfers control back to the coroutine.
+        (*respond)("received");
         // ensure the coroutine ran and woke up again with the intended result
-        ensure_equals(result.asString(), "received");
+        ensure_equals(stringdata, "received");
+    }
+
+    void waitForEventOn1()
+    {
+        BEGIN
+        {
+            result = suspendUntilEventOn("source");
+        }
+        END
     }
 
     template<> template<>
     void object::test<3>()
     {
+        clear();
         set_test_name("waitForEventOn1");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn1, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<3>", waitForEventOn1);
         debug("about to send");
         LLEventPumps::instance().obtain("source").post("received");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "received");
     }
 
+    void waitForEventOn2()
+    {
+        BEGIN
+        {
+            LLEventWithID pair = suspendUntilEventOn("reply", "error");
+            result = pair.first;
+            which  = pair.second;
+            debug(STRINGIZE("result = " << result << ", which = " << which));
+        }
+        END
+    }
+
     template<> template<>
     void object::test<4>()
     {
+        clear();
         set_test_name("waitForEventOn2 reply");
         {
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn2, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<4>", waitForEventOn2);
         debug("about to send");
         LLEventPumps::instance().obtain("reply").post("received");
         debug("back from send");
-        ensure_done(coro);
         }
         ensure_equals(result.asString(), "received");
         ensure_equals("which pump", which, 0);
@@ -567,43 +336,65 @@ namespace tut
     template<> template<>
     void object::test<5>()
     {
+        clear();
         set_test_name("waitForEventOn2 error");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::waitForEventOn2, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<5>", waitForEventOn2);
         debug("about to send");
         LLEventPumps::instance().obtain("error").post("badness");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "badness");
         ensure_equals("which pump", which, 1);
     }
 
+    void coroPump()
+    {
+        BEGIN
+        {
+            LLCoroEventPump waiter;
+            replyName = waiter.getName();
+            result = waiter.suspend();
+        }
+        END
+    }
+
     template<> template<>
     void object::test<6>()
     {
+        clear();
         set_test_name("coroPump");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPump, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<6>", coroPump);
         debug("about to send");
         LLEventPumps::instance().obtain(replyName).post("received");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "received");
     }
 
+    void coroPumps()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            replyName = waiter.getName0();
+            errorName = waiter.getName1();
+            LLEventWithID pair(waiter.suspend());
+            result = pair.first;
+            which  = pair.second;
+        }
+        END
+    }
+
     template<> template<>
     void object::test<7>()
     {
+        clear();
         set_test_name("coroPumps reply");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumps, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<7>", coroPumps);
         debug("about to send");
         LLEventPumps::instance().obtain(replyName).post("received");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "received");
         ensure_equals("which pump", which, 0);
     }
@@ -611,188 +402,389 @@ namespace tut
     template<> template<>
     void object::test<8>()
     {
+        clear();
         set_test_name("coroPumps error");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumps, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<8>", coroPumps);
         debug("about to send");
         LLEventPumps::instance().obtain(errorName).post("badness");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "badness");
         ensure_equals("which pump", which, 1);
     }
 
+    void coroPumpsNoEx()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            replyName = waiter.getName0();
+            errorName = waiter.getName1();
+            result = waiter.suspendWithException();
+        }
+        END
+    }
+
     template<> template<>
     void object::test<9>()
     {
+        clear();
         set_test_name("coroPumpsNoEx");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsNoEx, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<9>", coroPumpsNoEx);
         debug("about to send");
         LLEventPumps::instance().obtain(replyName).post("received");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "received");
     }
 
+    void coroPumpsEx()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            replyName = waiter.getName0();
+            errorName = waiter.getName1();
+            try
+            {
+                result = waiter.suspendWithException();
+                debug("no exception");
+            }
+            catch (const LLErrorEvent& e)
+            {
+                debug(STRINGIZE("exception " << e.what()));
+                errordata = e.getData();
+            }
+        }
+        END
+    }
+
     template<> template<>
     void object::test<10>()
     {
+        clear();
         set_test_name("coroPumpsEx");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsEx, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<10>", coroPumpsEx);
         debug("about to send");
         LLEventPumps::instance().obtain(errorName).post("badness");
         debug("back from send");
-        ensure_done(coro);
         ensure("no result", result.isUndefined());
         ensure_equals("got error", errordata.asString(), "badness");
     }
 
+    void coroPumpsNoLog()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            replyName = waiter.getName0();
+            errorName = waiter.getName1();
+            result = waiter.suspendWithLog();
+        }
+        END
+    }
+
     template<> template<>
     void object::test<11>()
     {
+        clear();
         set_test_name("coroPumpsNoLog");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsNoLog, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<11>", coroPumpsNoLog);
         debug("about to send");
         LLEventPumps::instance().obtain(replyName).post("received");
         debug("back from send");
-        ensure_done(coro);
         ensure_equals(result.asString(), "received");
     }
 
+    void coroPumpsLog()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            replyName = waiter.getName0();
+            errorName = waiter.getName1();
+            WrapLLErrs capture;
+            try
+            {
+                result = waiter.suspendWithLog();
+                debug("no exception");
+            }
+            catch (const WrapLLErrs::FatalException& e)
+            {
+                debug(STRINGIZE("exception " << e.what()));
+                threw = e.what();
+            }
+        }
+        END
+    }
+
     template<> template<>
     void object::test<12>()
     {
+        clear();
         set_test_name("coroPumpsLog");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsLog, this, _1));
-        coro(std::nothrow);
+        LLCoros::instance().launch("test<12>", coroPumpsLog);
         debug("about to send");
         LLEventPumps::instance().obtain(errorName).post("badness");
         debug("back from send");
-        ensure_done(coro);
         ensure("no result", result.isUndefined());
         ensure_contains("got error", threw, "badness");
     }
 
+    void postAndWait1()
+    {
+        BEGIN
+        {
+            result = postAndSuspend(LLSDMap("value", 17),       // request event
+                                 immediateAPI.getPump(),     // requestPump
+                                 "reply1",                   // replyPump
+                                 "reply");                   // request["reply"] = name
+        }
+        END
+    }
+
     template<> template<>
     void object::test<13>()
     {
+        clear();
         set_test_name("postAndWait1");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::postAndWait1, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<13>", postAndWait1);
         ensure_equals(result.asInteger(), 18);
     }
 
+    void postAndWait2()
+    {
+        BEGIN
+        {
+            LLEventWithID pair = ::postAndSuspend2(LLSDMap("value", 18),
+                                                immediateAPI.getPump(),
+                                                "reply2",
+                                                "error2",
+                                                "reply",
+                                                "error");
+            result = pair.first;
+            which  = pair.second;
+            debug(STRINGIZE("result = " << result << ", which = " << which));
+        }
+        END
+    }
+
     template<> template<>
     void object::test<14>()
     {
+        clear();
         set_test_name("postAndWait2");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::postAndWait2, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<14>", postAndWait2);
         ensure_equals(result.asInteger(), 19);
         ensure_equals(which, 0);
     }
 
+    void postAndWait2_1()
+    {
+        BEGIN
+        {
+            LLEventWithID pair = ::postAndSuspend2(LLSDMap("value", 18)("fail", LLSD()),
+                                                immediateAPI.getPump(),
+                                                "reply2",
+                                                "error2",
+                                                "reply",
+                                                "error");
+            result = pair.first;
+            which  = pair.second;
+            debug(STRINGIZE("result = " << result << ", which = " << which));
+        }
+        END
+    }
+
     template<> template<>
     void object::test<15>()
     {
+        clear();
         set_test_name("postAndWait2_1");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::postAndWait2_1, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<15>", postAndWait2_1);
         ensure_equals(result.asInteger(), 19);
         ensure_equals(which, 1);
     }
 
+    void coroPumpPost()
+    {
+        BEGIN
+        {
+            LLCoroEventPump waiter;
+            result = waiter.postAndSuspend(LLSDMap("value", 17),
+                                        immediateAPI.getPump(), "reply");
+        }
+        END
+    }
+
     template<> template<>
     void object::test<16>()
     {
+        clear();
         set_test_name("coroPumpPost");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpPost, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<16>", coroPumpPost);
         ensure_equals(result.asInteger(), 18);
     }
 
+    void coroPumpsPost()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            LLEventWithID pair(waiter.postAndSuspend(LLSDMap("value", 23),
+                                                  immediateAPI.getPump(), "reply", "error"));
+            result = pair.first;
+            which  = pair.second;
+        }
+        END
+    }
+
     template<> template<>
     void object::test<17>()
     {
+        clear();
         set_test_name("coroPumpsPost reply");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPost, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<17>", coroPumpsPost);
         ensure_equals(result.asInteger(), 24);
         ensure_equals("which pump", which, 0);
     }
 
+    void coroPumpsPost_1()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            LLEventWithID pair(
+                waiter.postAndSuspend(LLSDMap("value", 23)("fail", LLSD()),
+                                   immediateAPI.getPump(), "reply", "error"));
+            result = pair.first;
+            which  = pair.second;
+        }
+        END
+    }
+
     template<> template<>
     void object::test<18>()
     {
+        clear();
         set_test_name("coroPumpsPost error");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPost_1, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<18>", coroPumpsPost_1);
         ensure_equals(result.asInteger(), 24);
         ensure_equals("which pump", which, 1);
     }
 
+    void coroPumpsPostNoEx()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            result = waiter.postAndSuspendWithException(LLSDMap("value", 8),
+                                                     immediateAPI.getPump(), "reply", "error");
+        }
+        END
+    }
+
     template<> template<>
     void object::test<19>()
     {
+        clear();
         set_test_name("coroPumpsPostNoEx");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostNoEx, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<19>", coroPumpsPostNoEx);
         ensure_equals(result.asInteger(), 9);
     }
 
+    void coroPumpsPostEx()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            try
+            {
+                result = waiter.postAndSuspendWithException(
+                    LLSDMap("value", 9)("fail", LLSD()),
+                    immediateAPI.getPump(), "reply", "error");
+                debug("no exception");
+            }
+            catch (const LLErrorEvent& e)
+            {
+                debug(STRINGIZE("exception " << e.what()));
+                errordata = e.getData();
+            }
+        }
+        END
+    }
+
     template<> template<>
     void object::test<20>()
     {
+        clear();
         set_test_name("coroPumpsPostEx");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostEx, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<20>", coroPumpsPostEx);
         ensure("no result", result.isUndefined());
         ensure_equals("got error", errordata.asInteger(), 10);
     }
 
+    void coroPumpsPostNoLog()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            result = waiter.postAndSuspendWithLog(LLSDMap("value", 30),
+                                               immediateAPI.getPump(), "reply", "error");
+        }
+        END
+    }
+
     template<> template<>
     void object::test<21>()
     {
+        clear();
         set_test_name("coroPumpsPostNoLog");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostNoLog, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<21>", coroPumpsPostNoLog);
         ensure_equals(result.asInteger(), 31);
     }
 
+    void coroPumpsPostLog()
+    {
+        BEGIN
+        {
+            LLCoroEventPumps waiter;
+            WrapLLErrs capture;
+            try
+            {
+                result = waiter.postAndSuspendWithLog(
+                    LLSDMap("value", 31)("fail", LLSD()),
+                    immediateAPI.getPump(), "reply", "error");
+                debug("no exception");
+            }
+            catch (const WrapLLErrs::FatalException& e)
+            {
+                debug(STRINGIZE("exception " << e.what()));
+                threw = e.what();
+            }
+        }
+        END
+    }
+
     template<> template<>
     void object::test<22>()
     {
+        clear();
         set_test_name("coroPumpsPostLog");
         DEBUG;
-        coroutine_type coro(boost::bind(&coroutine_data::coroPumpsPostLog, this, _1));
-        coro(std::nothrow);
-        ensure_done(coro);
+        LLCoros::instance().launch("test<22>", coroPumpsPostLog);
         ensure("no result", result.isUndefined());
         ensure_contains("got error", threw, "32");
     }