static void
SetContextOptions(JSContext *cx)
{
jsuword stackLimit;
if (gMaxStackSize == 0) {
/*
* Disable checking for stack overflow if limit is zero.
*/
stackLimit = 0;
} else {
#if JS_STACK_GROWTH_DIRECTION > 0
stackLimit = gStackBase + gMaxStackSize;
#else
stackLimit = gStackBase - gMaxStackSize;
#endif
}
JS_SetThreadStackLimit(cx, stackLimit);
JS_SetScriptStackQuota(cx, gScriptStackQuota);
}
ContextCallback(JSContext *cx, uintN operation)
{
XPCJSRuntime* self = nsXPConnect::GetRuntime();
if (self)
{
if (operation == JSCONTEXT_NEW)
{
// Set the limits on the native and script stack space.
XPCPerThreadData* tls = XPCPerThreadData::GetData(cx);
if(tls)
{
JS_SetThreadStackLimit(cx, tls->GetStackLimit());
}
JS_SetScriptStackQuota(cx, 100*1024*1024);
}
}
return gOldJSContextCallback
? gOldJSContextCallback(cx, operation)
: JS_TRUE;
}
nsresult
mozJSComponentLoader::ReallyInit()
{
nsresult rv;
/*
* Get the JSRuntime from the runtime svc, if possible.
* We keep a reference around, because it's a Bad Thing if the runtime
* service gets shut down before we're done. Bad!
*/
mRuntimeService = do_GetService(kJSRuntimeServiceContractID, &rv);
if (NS_FAILED(rv) ||
NS_FAILED(rv = mRuntimeService->GetRuntime(&mRuntime)))
return rv;
// Create our compilation context.
mContext = JS_NewContext(mRuntime, 256);
if (!mContext)
return NS_ERROR_OUT_OF_MEMORY;
uint32 options = JS_GetOptions(mContext);
JS_SetOptions(mContext, options | JSOPTION_XML);
// Always use the latest js version
JS_SetVersion(mContext, JSVERSION_LATEST);
// Limit C stack consumption to a reasonable 512K
int stackDummy;
const jsuword kStackSize = 0x80000;
jsuword stackLimit, currentStackAddr = (jsuword)&stackDummy;
#if JS_STACK_GROWTH_DIRECTION < 0
stackLimit = (currentStackAddr > kStackSize)
? currentStackAddr - kStackSize
: 0;
#else
stackLimit = (currentStackAddr + kStackSize > currentStackAddr)
? currentStackAddr + kStackSize
: (jsuword) -1;
#endif
JS_SetThreadStackLimit(mContext, stackLimit);
#ifndef XPCONNECT_STANDALONE
nsCOMPtr<nsIScriptSecurityManager> secman =
do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID);
if (!secman)
return NS_ERROR_FAILURE;
rv = secman->GetSystemPrincipal(getter_AddRefs(mSystemPrincipal));
if (NS_FAILED(rv) || !mSystemPrincipal)
return NS_ERROR_FAILURE;
#endif
if (!mModules.Init(32))
return NS_ERROR_OUT_OF_MEMORY;
if (!mImports.Init(32))
return NS_ERROR_OUT_OF_MEMORY;
if (!mInProgressImports.Init(32))
return NS_ERROR_OUT_OF_MEMORY;
// Set up our fastload file
nsCOMPtr<nsIFastLoadService> flSvc = do_GetFastLoadService(&rv);
if (NS_SUCCEEDED(rv))
rv = flSvc->NewFastLoadFile("XPC", getter_AddRefs(mFastLoadFile));
if (NS_FAILED(rv)) {
LOG(("Could not get fastload file location\n"));
}
// Listen for xpcom-shutdown so that we can close out our fastload file
// at that point (after that we can no longer create an input stream).
nsCOMPtr<nsIObserverService> obsSvc =
do_GetService(kObserverServiceContractID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = obsSvc->AddObserver(this, NS_XPCOM_SHUTDOWN_OBSERVER_ID, PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
rv = obsSvc->AddObserver(this, "xpcom-shutdown-loaders", PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef DEBUG_shaver_off
fprintf(stderr, "mJCL: ReallyInit success!\n");
#endif
mInitialized = PR_TRUE;
return NS_OK;
}