diff options
Diffstat (limited to 'indra/llcommon/lleventcoro.h')
| -rwxr-xr-x | indra/llcommon/lleventcoro.h | 176 |
1 files changed, 34 insertions, 142 deletions
diff --git a/indra/llcommon/lleventcoro.h b/indra/llcommon/lleventcoro.h index abbeeaa373..daf9360a2e 100755 --- a/indra/llcommon/lleventcoro.h +++ b/indra/llcommon/lleventcoro.h @@ -29,8 +29,6 @@ #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> @@ -102,9 +100,6 @@ LLVoidListener<LISTENER> voidlistener(const 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 @@ -116,21 +111,9 @@ namespace LLEventDetail * 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. + * each distinct coroutine instance. */ - template <typename COROUTINE_SELF> - std::string listenerNameForCoro(COROUTINE_SELF& self) - { - return listenerNameForCoroImpl(self.get_id()); - } + std::string listenerNameForCoro(); /** * Implement behavior described for postAndWait()'s @a replyPumpNamePath @@ -159,7 +142,7 @@ namespace LLEventDetail * convenience: the difference between this function and the sequence * @code * requestPump.post(myEvent); - * LLSD reply = waitForEventOn(self, replyPump); + * LLSD reply = waitForEventOn(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 @@ -201,51 +184,16 @@ 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 postAndWait(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 waitForEventOn(const LLEventPumpOrPumpName& pump) { // This is now a convenience wrapper for postAndWait(). - return postAndWait(self, LLSD(), LLEventPumpOrPumpName(), pump); + return postAndWait(LLSD(), LLEventPumpOrPumpName(), pump); } /// return type for two-pump variant of waitForEventOn() @@ -313,7 +261,7 @@ namespace LLEventDetail * I'd have preferred to overload the name postAndWait() for both signatures. * But consider the following ambiguous call: * @code - * postAndWait(self, LLSD(), requestPump, replyPump, "someString"); + * postAndWait(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 @@ -322,69 +270,29 @@ namespace LLEventDetail * It seems less burdensome to write postAndWait2() than to write either * LLSD("someString") or LLEventOrPumpName("someString"). */ -template <typename SELF> -LLEventWithID postAndWait2(SELF& self, const LLSD& event, +LLEventWithID postAndWait2(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) +waitForEventOn(const LLEventPumpOrPumpName& pump0, const LLEventPumpOrPumpName& pump1) { // This is now a convenience wrapper for postAndWait2(). - return postAndWait2(self, LLSD(), LLEventPumpOrPumpName(), pump0, pump1); + return postAndWait2(LLSD(), LLEventPumpOrPumpName(), pump0, pump1); } /** * Helper for the two-pump variant of waitForEventOn(), e.g.: * * @code - * LLSD reply = errorException(waitForEventOn(self, replyPump, errorPump), + * LLSD reply = errorException(waitForEventOn(replyPump, errorPump), * "error response from login.cgi"); * @endcode * @@ -454,26 +362,16 @@ 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 wait() { - return waitForEventOn(self, mPump); + return ::waitForEventOn(mPump); } - template <typename SELF> - LLSD postAndWait(SELF& self, const LLSD& event, const LLEventPumpOrPumpName& requestPump, + LLSD postAndWait(const LLSD& event, const LLEventPumpOrPumpName& requestPump, const LLSD& replyPumpNamePath=LLSD()) { - return ::postAndWait(self, event, requestPump, mPump, replyPumpNamePath); + return ::postAndWait(event, requestPump, mPump, replyPumpNamePath); } private: @@ -509,55 +407,49 @@ public: /// request pump 1 LLEventPump& getPump1() { return mPump1; } - /// waitForEventOn(self, either of our two LLEventPumps) - template <typename SELF> - LLEventWithID wait(SELF& self) + /// waitForEventOn(either of our two LLEventPumps) + LLEventWithID wait() { - return waitForEventOn(self, mPump0, mPump1); + return waitForEventOn(mPump0, mPump1); } - /// errorException(wait(self)) - template <typename SELF> - LLSD waitWithException(SELF& self) + /// errorException(wait()) + LLSD waitWithException() { - return errorException(wait(self), std::string("Error event on ") + getName1()); + return errorException(wait(), std::string("Error event on ") + getName1()); } - /// errorLog(wait(self)) - template <typename SELF> - LLSD waitWithLog(SELF& self) + /// errorLog(wait()) + LLSD waitWithLog() { - return errorLog(wait(self), std::string("Error event on ") + getName1()); + return errorLog(wait(), std::string("Error event on ") + getName1()); } - template <typename SELF> - LLEventWithID postAndWait(SELF& self, const LLSD& event, + LLEventWithID postAndWait(const LLSD& event, const LLEventPumpOrPumpName& requestPump, const LLSD& replyPump0NamePath=LLSD(), const LLSD& replyPump1NamePath=LLSD()) { - return postAndWait2(self, event, requestPump, mPump0, mPump1, + return postAndWait2(event, requestPump, mPump0, mPump1, replyPump0NamePath, replyPump1NamePath); } - template <typename SELF> - LLSD postAndWaitWithException(SELF& self, const LLSD& event, + LLSD postAndWaitWithException(const LLSD& event, const LLEventPumpOrPumpName& requestPump, const LLSD& replyPump0NamePath=LLSD(), const LLSD& replyPump1NamePath=LLSD()) { - return errorException(postAndWait(self, event, requestPump, + return errorException(postAndWait(event, requestPump, replyPump0NamePath, replyPump1NamePath), std::string("Error event on ") + getName1()); } - template <typename SELF> - LLSD postAndWaitWithLog(SELF& self, const LLSD& event, + LLSD postAndWaitWithLog(const LLSD& event, const LLEventPumpOrPumpName& requestPump, const LLSD& replyPump0NamePath=LLSD(), const LLSD& replyPump1NamePath=LLSD()) { - return errorLog(postAndWait(self, event, requestPump, + return errorLog(postAndWait(event, requestPump, replyPump0NamePath, replyPump1NamePath), std::string("Error event on ") + getName1()); } |