MAINT-8689 Diagnostics for coroutine memory crash

indra/llcommon/llcoros.cpp

@@ -283,6 +283,7 @@ void LLCoros::setStackSize(S32 stacksize)
 
 void LLCoros::printActiveCoroutines()
 {
+    LL_INFOS("LLCoros") << "Number of active coroutines: " << (S32)mCoros.size() << LL_ENDL;
     LL_INFOS("LLCoros") << "-------------- List of active coroutines ------------";
     CoroMap::iterator iter;
     CoroMap::iterator end = mCoros.end();
@@ -401,7 +402,13 @@ std::string LLCoros::launch(const std::string& prefix, const callable_t& callabl
     std::string name(generateDistinctName(prefix));
     Current current;
     // pass the current value of Current as previous context
-    CoroData* newCoro = new CoroData(current, name, callable, mStackSize);
+    CoroData* newCoro = new(std::nothrow) CoroData(current, name, callable, mStackSize);
+    if (newCoro == NULL)
+    {
+        // Out of memory?
+        printActiveCoroutines();
+        LL_ERRS("LLCoros") << "Failed to start coroutine: " << name << " Stacksize: " << mStackSize << " Total coroutines: " << mCoros.size() << LL_ENDL;
+    }
     // Store it in our pointer map
     mCoros.insert(name, newCoro);
     // also set it as current