XPCJSRuntime::XPCJSRuntime(nsXPConnect* aXPConnect,
nsIJSRuntimeService* aJSRuntimeService)
: mXPConnect(aXPConnect),
mJSRuntime(nsnull),
mJSRuntimeService(aJSRuntimeService),
mContextMap(JSContext2XPCContextMap::newMap(XPC_CONTEXT_MAP_SIZE)),
mWrappedJSMap(JSObject2WrappedJSMap::newMap(XPC_JS_MAP_SIZE)),
mWrappedJSClassMap(IID2WrappedJSClassMap::newMap(XPC_JS_CLASS_MAP_SIZE)),
mIID2NativeInterfaceMap(IID2NativeInterfaceMap::newMap(XPC_NATIVE_INTERFACE_MAP_SIZE)),
mClassInfo2NativeSetMap(ClassInfo2NativeSetMap::newMap(XPC_NATIVE_SET_MAP_SIZE)),
mNativeSetMap(NativeSetMap::newMap(XPC_NATIVE_SET_MAP_SIZE)),
mThisTranslatorMap(IID2ThisTranslatorMap::newMap(XPC_THIS_TRANSLATOR_MAP_SIZE)),
mNativeScriptableSharedMap(XPCNativeScriptableSharedMap::newMap(XPC_NATIVE_JSCLASS_MAP_SIZE)),
mDyingWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DYING_NATIVE_PROTO_MAP_SIZE)),
mDetachedWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DETACHED_NATIVE_PROTO_MAP_SIZE)),
mExplicitNativeWrapperMap(XPCNativeWrapperMap::newMap(XPC_NATIVE_WRAPPER_MAP_SIZE)),
mMapLock(XPCAutoLock::NewLock("XPCJSRuntime::mMapLock")),
mThreadRunningGC(nsnull),
mWrappedJSToReleaseArray(),
mNativesToReleaseArray(),
mDoingFinalization(JS_FALSE),
mVariantRoots(nsnull),
mWrappedJSRoots(nsnull),
mObjectHolderRoots(nsnull)
{
#ifdef XPC_CHECK_WRAPPERS_AT_SHUTDOWN
DEBUG_WrappedNativeHashtable =
JS_NewDHashTable(JS_DHashGetStubOps(), nsnull,
sizeof(JSDHashEntryStub), 128);
#endif
// these jsids filled in later when we have a JSContext to work with.
mStrIDs[0] = 0;
if(mJSRuntimeService)
{
NS_ADDREF(mJSRuntimeService);
mJSRuntimeService->GetRuntime(&mJSRuntime);
}
NS_ASSERTION(!gOldJSGCCallback, "XPCJSRuntime created more than once");
if(mJSRuntime)
{
gOldJSContextCallback = JS_SetContextCallback(mJSRuntime,
ContextCallback);
gOldJSGCCallback = JS_SetGCCallbackRT(mJSRuntime, GCCallback);
JS_SetExtraGCRoots(mJSRuntime, TraceJS, this);
}
if(!JS_DHashTableInit(&mJSHolders, JS_DHashGetStubOps(), nsnull,
sizeof(ObjectHolder), 512))
mJSHolders.ops = nsnull;
if(!JS_DHashTableInit(&mClearedGlobalObjects, JS_DHashGetStubOps(), nsnull,
sizeof(ClearedGlobalObject), JS_DHASH_MIN_SIZE))
mClearedGlobalObjects.ops = nsnull;
// Install a JavaScript 'debugger' keyword handler in debug builds only
#ifdef DEBUG
if(mJSRuntime && !JS_GetGlobalDebugHooks(mJSRuntime)->debuggerHandler)
xpc_InstallJSDebuggerKeywordHandler(mJSRuntime);
#endif
}
XPCJSRuntime::XPCJSRuntime(nsXPConnect* aXPConnect)
: mXPConnect(aXPConnect),
mJSRuntime(nsnull),
mWrappedJSMap(JSObject2WrappedJSMap::newMap(XPC_JS_MAP_SIZE)),
mWrappedJSClassMap(IID2WrappedJSClassMap::newMap(XPC_JS_CLASS_MAP_SIZE)),
mIID2NativeInterfaceMap(IID2NativeInterfaceMap::newMap(XPC_NATIVE_INTERFACE_MAP_SIZE)),
mClassInfo2NativeSetMap(ClassInfo2NativeSetMap::newMap(XPC_NATIVE_SET_MAP_SIZE)),
mNativeSetMap(NativeSetMap::newMap(XPC_NATIVE_SET_MAP_SIZE)),
mThisTranslatorMap(IID2ThisTranslatorMap::newMap(XPC_THIS_TRANSLATOR_MAP_SIZE)),
mNativeScriptableSharedMap(XPCNativeScriptableSharedMap::newMap(XPC_NATIVE_JSCLASS_MAP_SIZE)),
mDyingWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DYING_NATIVE_PROTO_MAP_SIZE)),
mDetachedWrappedNativeProtoMap(XPCWrappedNativeProtoMap::newMap(XPC_DETACHED_NATIVE_PROTO_MAP_SIZE)),
mExplicitNativeWrapperMap(XPCNativeWrapperMap::newMap(XPC_NATIVE_WRAPPER_MAP_SIZE)),
mMapLock(XPCAutoLock::NewLock("XPCJSRuntime::mMapLock")),
mThreadRunningGC(nsnull),
mWrappedJSToReleaseArray(),
mNativesToReleaseArray(),
mDoingFinalization(JS_FALSE),
mVariantRoots(nsnull),
mWrappedJSRoots(nsnull),
mObjectHolderRoots(nsnull),
mUnrootedGlobalCount(0),
mWatchdogWakeup(nsnull),
mWatchdogThread(nsnull)
{
#ifdef XPC_CHECK_WRAPPERS_AT_SHUTDOWN
DEBUG_WrappedNativeHashtable =
JS_NewDHashTable(JS_DHashGetStubOps(), nsnull,
sizeof(JSDHashEntryStub), 128);
#endif
NS_TIME_FUNCTION;
DOM_InitInterfaces();
// these jsids filled in later when we have a JSContext to work with.
mStrIDs[0] = 0;
mJSRuntime = JS_NewRuntime(32L * 1024L * 1024L); // pref ?
if(mJSRuntime)
{
// Unconstrain the runtime's threshold on nominal heap size, to avoid
// triggering GC too often if operating continuously near an arbitrary
// finite threshold (0xffffffff is infinity for uint32 parameters).
// This leaves the maximum-JS_malloc-bytes threshold still in effect
// to cause period, and we hope hygienic, last-ditch GCs from within
// the GC's allocator.
JS_SetGCParameter(mJSRuntime, JSGC_MAX_BYTES, 0xffffffff);
JS_SetContextCallback(mJSRuntime, ContextCallback);
JS_SetGCCallbackRT(mJSRuntime, GCCallback);
JS_SetExtraGCRoots(mJSRuntime, TraceJS, this);
mWatchdogWakeup = JS_NEW_CONDVAR(mJSRuntime->gcLock);
mJSRuntime->setCustomGCChunkAllocator(&gXPCJSChunkAllocator);
NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(XPConnectJSRuntimeGCChunks));
}
if(!JS_DHashTableInit(&mJSHolders, JS_DHashGetStubOps(), nsnull,
sizeof(ObjectHolder), 512))
mJSHolders.ops = nsnull;
// Install a JavaScript 'debugger' keyword handler in debug builds only
#ifdef DEBUG
if(mJSRuntime && !JS_GetGlobalDebugHooks(mJSRuntime)->debuggerHandler)
xpc_InstallJSDebuggerKeywordHandler(mJSRuntime);
#endif
if (mWatchdogWakeup) {
AutoLockJSGC lock(mJSRuntime);
mWatchdogThread = PR_CreateThread(PR_USER_THREAD, WatchdogMain, this,
PR_PRIORITY_NORMAL, PR_LOCAL_THREAD,
PR_UNJOINABLE_THREAD, 0);
}
}