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-rw-r--r--indra/llcommon/CMakeLists.txt1
-rw-r--r--indra/llcommon/llinstancetracker.h90
-rw-r--r--indra/llcommon/lltimer.cpp12
-rw-r--r--indra/llcommon/tests/llinstancetracker_test.cpp160
4 files changed, 231 insertions, 32 deletions
diff --git a/indra/llcommon/CMakeLists.txt b/indra/llcommon/CMakeLists.txt
index f785698612..3a36b8430c 100644
--- a/indra/llcommon/CMakeLists.txt
+++ b/indra/llcommon/CMakeLists.txt
@@ -305,6 +305,7 @@ LL_ADD_INTEGRATION_TEST(lldate "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(lldependencies "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(llerror "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(llframetimer "" "${test_libs}")
+LL_ADD_INTEGRATION_TEST(llinstancetracker "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(lllazy "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(llrand "" "${test_libs}")
LL_ADD_INTEGRATION_TEST(llsdserialize "" "${test_libs}")
diff --git a/indra/llcommon/llinstancetracker.h b/indra/llcommon/llinstancetracker.h
index ea50acbbc5..039d68faef 100644
--- a/indra/llcommon/llinstancetracker.h
+++ b/indra/llcommon/llinstancetracker.h
@@ -38,22 +38,53 @@
#include "string_table.h"
#include <boost/utility.hpp>
-
-// This mix-in class adds support for tracking all instances of the specified class parameter T
-// The (optional) key associates a value of type KEY with a given instance of T, for quick lookup
-// If KEY is not provided, then instances are stored in a simple set
-// *NOTE: see explicit specialization below for default KEY==T* case
+#include <boost/function.hpp>
+#include <boost/bind.hpp>
+#include <boost/iterator/transform_iterator.hpp>
+#include <boost/iterator/indirect_iterator.hpp>
+
+/// This mix-in class adds support for tracking all instances of the specified class parameter T
+/// The (optional) key associates a value of type KEY with a given instance of T, for quick lookup
+/// If KEY is not provided, then instances are stored in a simple set
+/// @NOTE: see explicit specialization below for default KEY==T* case
template<typename T, typename KEY = T*>
class LLInstanceTracker : boost::noncopyable
{
+ typedef typename std::map<KEY, T*> InstanceMap;
+ typedef boost::function<const KEY&(typename InstanceMap::value_type&)> KeyGetter;
+ typedef boost::function<T*(typename InstanceMap::value_type&)> InstancePtrGetter;
public:
- typedef typename std::map<KEY, T*>::iterator instance_iter;
- typedef typename std::map<KEY, T*>::const_iterator instance_const_iter;
-
- static T* getInstance(const KEY& k) { instance_iter found = getMap().find(k); return (found == getMap().end()) ? NULL : found->second; }
+ /// Dereferencing key_iter gives you a const KEY&
+ typedef boost::transform_iterator<KeyGetter, typename InstanceMap::iterator> key_iter;
+ /// Dereferencing instance_iter gives you a T&
+ typedef boost::indirect_iterator< boost::transform_iterator<InstancePtrGetter, typename InstanceMap::iterator> > instance_iter;
+
+ static T* getInstance(const KEY& k)
+ {
+ typename InstanceMap::const_iterator found = getMap().find(k);
+ return (found == getMap().end()) ? NULL : found->second;
+ }
- static instance_iter beginInstances() { return getMap().begin(); }
- static instance_iter endInstances() { return getMap().end(); }
+ static key_iter beginKeys()
+ {
+ return boost::make_transform_iterator(getMap().begin(),
+ boost::bind(&InstanceMap::value_type::first, _1));
+ }
+ static key_iter endKeys()
+ {
+ return boost::make_transform_iterator(getMap().end(),
+ boost::bind(&InstanceMap::value_type::first, _1));
+ }
+ static instance_iter beginInstances()
+ {
+ return instance_iter(boost::make_transform_iterator(getMap().begin(),
+ boost::bind(&InstanceMap::value_type::second, _1)));
+ }
+ static instance_iter endInstances()
+ {
+ return instance_iter(boost::make_transform_iterator(getMap().end(),
+ boost::bind(&InstanceMap::value_type::second, _1)));
+ }
static S32 instanceCount() { return getMap().size(); }
protected:
LLInstanceTracker(KEY key) { add(key); }
@@ -69,11 +100,11 @@ private:
}
void remove() { getMap().erase(mKey); }
- static std::map<KEY, T*>& getMap()
+ static InstanceMap& getMap()
{
if (! sInstances)
{
- sInstances = new std::map<KEY, T*>;
+ sInstances = new InstanceMap;
}
return *sInstances;
}
@@ -81,20 +112,27 @@ private:
private:
KEY mKey;
- static std::map<KEY, T*>* sInstances;
+ static InstanceMap* sInstances;
};
-// explicit specialization for default case where KEY is T*
-// use a simple std::set<T*>
+/// explicit specialization for default case where KEY is T*
+/// use a simple std::set<T*>
template<typename T>
class LLInstanceTracker<T, T*>
{
+ typedef typename std::set<T*> InstanceSet;
public:
- typedef typename std::set<T*>::iterator instance_iter;
- typedef typename std::set<T*>::const_iterator instance_const_iter;
-
- static instance_iter beginInstances() { return getSet().begin(); }
- static instance_iter endInstances() { return getSet().end(); }
+ /// Dereferencing key_iter gives you a T* (since T* is the key)
+ typedef typename InstanceSet::iterator key_iter;
+ /// Dereferencing instance_iter gives you a T&
+ typedef boost::indirect_iterator<key_iter> instance_iter;
+
+ /// for completeness of analogy with the generic implementation
+ static T* getInstance(T* k) { return k; }
+ static key_iter beginKeys() { return getSet().begin(); }
+ static key_iter endKeys() { return getSet().end(); }
+ static instance_iter beginInstances() { return instance_iter(getSet().begin()); }
+ static instance_iter endInstances() { return instance_iter(getSet().end()); }
static S32 instanceCount() { return getSet().size(); }
protected:
@@ -103,19 +141,19 @@ protected:
LLInstanceTracker(const LLInstanceTracker& other) { getSet().insert(static_cast<T*>(this)); }
- static std::set<T*>& getSet() // called after getReady() but before go()
+ static InstanceSet& getSet() // called after getReady() but before go()
{
if (! sInstances)
{
- sInstances = new std::set<T*>;
+ sInstances = new InstanceSet;
}
return *sInstances;
}
- static std::set<T*>* sInstances;
+ static InstanceSet* sInstances;
};
-template <typename T, typename KEY> std::map<KEY, T*>* LLInstanceTracker<T, KEY>::sInstances = NULL;
-template <typename T> std::set<T*>* LLInstanceTracker<T, T*>::sInstances = NULL;
+template <typename T, typename KEY> typename LLInstanceTracker<T, KEY>::InstanceMap* LLInstanceTracker<T, KEY>::sInstances = NULL;
+template <typename T> typename LLInstanceTracker<T, T*>::InstanceSet* LLInstanceTracker<T, T*>::sInstances = NULL;
#endif
diff --git a/indra/llcommon/lltimer.cpp b/indra/llcommon/lltimer.cpp
index ea5b0c03ef..ef3e8dbc94 100644
--- a/indra/llcommon/lltimer.cpp
+++ b/indra/llcommon/lltimer.cpp
@@ -583,13 +583,13 @@ void LLEventTimer::updateClass()
std::list<LLEventTimer*> completed_timers;
for (instance_iter iter = beginInstances(); iter != endInstances(); )
{
- LLEventTimer* timer = *iter++;
- F32 et = timer->mEventTimer.getElapsedTimeF32();
- if (timer->mEventTimer.getStarted() && et > timer->mPeriod) {
- timer->mEventTimer.reset();
- if ( timer->tick() )
+ LLEventTimer& timer = *iter++;
+ F32 et = timer.mEventTimer.getElapsedTimeF32();
+ if (timer.mEventTimer.getStarted() && et > timer.mPeriod) {
+ timer.mEventTimer.reset();
+ if ( timer.tick() )
{
- completed_timers.push_back( timer );
+ completed_timers.push_back( &timer );
}
}
}
diff --git a/indra/llcommon/tests/llinstancetracker_test.cpp b/indra/llcommon/tests/llinstancetracker_test.cpp
new file mode 100644
index 0000000000..7415f2d33b
--- /dev/null
+++ b/indra/llcommon/tests/llinstancetracker_test.cpp
@@ -0,0 +1,160 @@
+/**
+ * @file llinstancetracker_test.cpp
+ * @author Nat Goodspeed
+ * @date 2009-11-10
+ * @brief Test for llinstancetracker.
+ *
+ * $LicenseInfo:firstyear=2009&license=viewergpl$
+ * Copyright (c) 2009, Linden Research, Inc.
+ * $/LicenseInfo$
+ */
+
+// Precompiled header
+#include "linden_common.h"
+// associated header
+#include "llinstancetracker.h"
+// STL headers
+#include <string>
+#include <vector>
+#include <set>
+#include <algorithm> // std::sort()
+// std headers
+// external library headers
+#include <boost/scoped_ptr.hpp>
+// other Linden headers
+#include "../test/lltut.h"
+
+struct Keyed: public LLInstanceTracker<Keyed, std::string>
+{
+ Keyed(const std::string& name):
+ LLInstanceTracker<Keyed, std::string>(name),
+ mName(name)
+ {}
+ std::string mName;
+};
+
+struct Unkeyed: public LLInstanceTracker<Unkeyed>
+{
+};
+
+/*****************************************************************************
+* TUT
+*****************************************************************************/
+namespace tut
+{
+ struct llinstancetracker_data
+ {
+ };
+ typedef test_group<llinstancetracker_data> llinstancetracker_group;
+ typedef llinstancetracker_group::object object;
+ llinstancetracker_group llinstancetrackergrp("llinstancetracker");
+
+ template<> template<>
+ void object::test<1>()
+ {
+ ensure_equals(Keyed::instanceCount(), 0);
+ {
+ Keyed one("one");
+ ensure_equals(Keyed::instanceCount(), 1);
+ Keyed* found = Keyed::getInstance("one");
+ ensure("couldn't find stack Keyed", found);
+ ensure_equals("found wrong Keyed instance", found, &one);
+ {
+ boost::scoped_ptr<Keyed> two(new Keyed("two"));
+ ensure_equals(Keyed::instanceCount(), 2);
+ Keyed* found = Keyed::getInstance("two");
+ ensure("couldn't find heap Keyed", found);
+ ensure_equals("found wrong Keyed instance", found, two.get());
+ }
+ ensure_equals(Keyed::instanceCount(), 1);
+ }
+ Keyed* found = Keyed::getInstance("one");
+ ensure("Keyed key lives too long", ! found);
+ ensure_equals(Keyed::instanceCount(), 0);
+ }
+
+ template<> template<>
+ void object::test<2>()
+ {
+ ensure_equals(Unkeyed::instanceCount(), 0);
+ {
+ Unkeyed one;
+ ensure_equals(Unkeyed::instanceCount(), 1);
+ Unkeyed* found = Unkeyed::getInstance(&one);
+ ensure_equals(found, &one);
+ {
+ boost::scoped_ptr<Unkeyed> two(new Unkeyed);
+ ensure_equals(Unkeyed::instanceCount(), 2);
+ Unkeyed* found = Unkeyed::getInstance(two.get());
+ ensure_equals(found, two.get());
+ }
+ ensure_equals(Unkeyed::instanceCount(), 1);
+ }
+ ensure_equals(Unkeyed::instanceCount(), 0);
+ }
+
+ template<> template<>
+ void object::test<3>()
+ {
+ Keyed one("one"), two("two"), three("three");
+ // We don't want to rely on the underlying container delivering keys
+ // in any particular order. That allows us the flexibility to
+ // reimplement LLInstanceTracker using, say, a hash map instead of a
+ // std::map. We DO insist that every key appear exactly once.
+ typedef std::vector<std::string> StringVector;
+ StringVector keys(Keyed::beginKeys(), Keyed::endKeys());
+ std::sort(keys.begin(), keys.end());
+ StringVector::const_iterator ki(keys.begin());
+ ensure_equals(*ki++, "one");
+ ensure_equals(*ki++, "three");
+ ensure_equals(*ki++, "two");
+ // Use ensure() here because ensure_equals would want to display
+ // mismatched values, and frankly that wouldn't help much.
+ ensure("didn't reach end", ki == keys.end());
+
+ // Use a somewhat different approach to order independence with
+ // beginInstances(): explicitly capture the instances we know in a
+ // set, and delete them as we iterate through.
+ typedef std::set<Keyed*> InstanceSet;
+ InstanceSet instances;
+ instances.insert(&one);
+ instances.insert(&two);
+ instances.insert(&three);
+ for (Keyed::instance_iter ii(Keyed::beginInstances()), iend(Keyed::endInstances());
+ ii != iend; ++ii)
+ {
+ Keyed& ref = *ii;
+ ensure_equals("spurious instance", instances.erase(&ref), 1);
+ }
+ ensure_equals("unreported instance", instances.size(), 0);
+ }
+
+ template<> template<>
+ void object::test<4>()
+ {
+ Unkeyed one, two, three;
+ typedef std::set<Unkeyed*> KeySet;
+ KeySet keys;
+ keys.insert(&one);
+ keys.insert(&two);
+ keys.insert(&three);
+ for (Unkeyed::key_iter ki(Unkeyed::beginKeys()), kend(Unkeyed::endKeys());
+ ki != kend; ++ki)
+ {
+ ensure_equals("spurious key", keys.erase(*ki), 1);
+ }
+ ensure_equals("unreported key", keys.size(), 0);
+
+ KeySet instances;
+ instances.insert(&one);
+ instances.insert(&two);
+ instances.insert(&three);
+ for (Unkeyed::instance_iter ii(Unkeyed::beginInstances()), iend(Unkeyed::endInstances());
+ ii != iend; ++ii)
+ {
+ Unkeyed& ref = *ii;
+ ensure_equals("spurious instance", instances.erase(&ref), 1);
+ }
+ ensure_equals("unreported instance", instances.size(), 0);
+ }
+} // namespace tut
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