SourceDynamicProfileManager *
SourceDynamicProfileManager::Deserialize(T * reader, Recycler* recycler)
{
uint functionCount;
if (!reader->Peek(&functionCount))
{
return nullptr;
}
BVFixed * startupFunctions = BVFixed::New(functionCount, recycler);
if (!reader->ReadArray(((char *)startupFunctions),
BVFixed::GetAllocSize(functionCount)))
{
return nullptr;
}
uint profileCount;
if (!reader->Read(&profileCount))
{
return nullptr;
}
ThreadContext* threadContext = ThreadContext::GetContextForCurrentThread();
SourceDynamicProfileManager * sourceDynamicProfileManager = RecyclerNew(threadContext->GetRecycler(), SourceDynamicProfileManager, recycler);
sourceDynamicProfileManager->cachedStartupFunctions = startupFunctions;
#if DBG_DUMP
if(Configuration::Global.flags.Dump.IsEnabled(DynamicProfilePhase))
{
Output::Print(L"Loaded: Startup functions bit vector:");
startupFunctions->Dump();
}
#endif
for (uint i = 0; i < profileCount; i++)
{
Js::LocalFunctionId functionId;
DynamicProfileInfo * dynamicProfileInfo = DynamicProfileInfo::Deserialize(reader, recycler, &functionId);
if (dynamicProfileInfo == nullptr || functionId >= functionCount)
{
return nullptr;
}
sourceDynamicProfileManager->dynamicProfileInfoMap.Add(functionId, dynamicProfileInfo);
}
return sourceDynamicProfileManager;
}
// Recover/Release unused memory and give it back to OS.
// The function doesn't throw if the attempt to recover memory fails, in which case it simply does nothing.
// Useful when running out of memory e.g. for Arena but there is some recycler memory which has been committed but is unused.
void Exception::RecoverUnusedMemory()
{
ThreadContext* threadContext = ThreadContext::GetContextForCurrentThread();
if (threadContext)
{
Recycler* threadRecycler = threadContext->GetRecycler();
if (threadRecycler)
{
try
{
threadRecycler->CollectNow<CollectOnRecoverFromOutOfMemory>();
}
catch (...)
{
// Technically, exception is a valid scenario: we asked to recover mem, and it couldn't.
// Do not let the exception leak out.
}
}
}
}
void Utf8SourceInfo::EnsureInitialized(int initialFunctionCount)
{
ThreadContext* threadContext = ThreadContext::GetContextForCurrentThread();
Recycler* recycler = threadContext->GetRecycler();
if (this->functionBodyDictionary == nullptr)
{
// This collection is allocated with leaf allocation policy. The references to the function body
// here does not keep the function alive. However, the functions remove themselves at finalize
// so if a function actually is in this map, it means that it is alive.
this->functionBodyDictionary = RecyclerNew(recycler, FunctionBodyDictionary, recycler,
initialFunctionCount, threadContext->GetEtwRundownCriticalSection());
}
if (CONFIG_FLAG(DeferTopLevelTillFirstCall) && !m_deferredFunctionsInitialized)
{
Assert(this->m_deferredFunctionsDictionary == nullptr);
this->m_deferredFunctionsDictionary = RecyclerNew(recycler, DeferredFunctionsDictionary, recycler,
initialFunctionCount, threadContext->GetEtwRundownCriticalSection());
m_deferredFunctionsInitialized = true;
}
}
/* static */
bool JsrtContext::TrySetCurrent(JsrtContext * context)
{
Assert(s_tlsSlot != TLS_OUT_OF_INDEXES);
ThreadContext * threadContext;
//We are not pinning the context after SetCurrentContext, so if the context is not pinned
//it might be reclaimed half way during execution. In jsrtshell the runtime was optimized out
//at time of JsrtContext::Run by the compiler.
//The change is to pin the context at setconcurrentcontext, and unpin the previous one. In
//JsDisposeRuntime we'll reject if current context is active, so that will make sure all
//contexts are unpinned at time of JsDisposeRuntime.
if (context != nullptr)
{
threadContext = context->GetScriptContext()->GetThreadContext();
if (!ThreadContextTLSEntry::TrySetThreadContext(threadContext))
{
return false;
}
threadContext->GetRecycler()->RootAddRef((LPVOID)context);
}
else
{
if (!ThreadContextTLSEntry::ClearThreadContext(true))
{
return false;
}
}
JsrtContext* originalContext = (JsrtContext*) TlsGetValue(s_tlsSlot);
if (originalContext != nullptr)
{
originalContext->GetScriptContext()->GetRecycler()->RootRelease((LPVOID) originalContext);
}
TlsSetValue(s_tlsSlot, context);
return true;
}
Js::ScriptContext* JsrtContextCore::EnsureScriptContext()
{
Assert(this->GetJavascriptLibrary() == nullptr);
ThreadContext* localThreadContext = this->GetRuntime()->GetThreadContext();
AutoPtr<Js::ScriptContext> newScriptContext(Js::ScriptContext::New(localThreadContext));
newScriptContext->Initialize();
hostContext = HeapNew(ChakraCoreHostScriptContext, newScriptContext);
newScriptContext->SetHostScriptContext(hostContext);
this->SetJavascriptLibrary(newScriptContext.Detach()->GetLibrary());
Js::JavascriptLibrary *library = this->GetScriptContext()->GetLibrary();
Assert(library != nullptr);
localThreadContext->GetRecycler()->RootRelease(library->GetGlobalObject());
library->GetEvalFunctionObject()->SetEntryPoint(&Js::GlobalObject::EntryEval);
library->GetFunctionConstructor()->SetEntryPoint(&Js::JavascriptFunction::NewInstance);
return this->GetScriptContext();
}