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Bug 1182197 investigation patch. Log the stack at promise fulfillment on a CCed promise into the crash reporter data. r=dmajor,nsm

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This commit is contained in:
Boris Zbarsky 2015-09-08 21:23:55 -04:00
parent f9ae97fd2a
commit e1525beaca
1 changed files with 27 additions and 1 deletions
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28
dom/promise/Promise.cpp
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@ -36,6 +36,9 @@
#include "WorkerPrivate.h"
#include "WorkerRunnable.h"
#include "xpcpublic.h"
#ifdef MOZ_CRASHREPORTER
#include "nsExceptionHandler.h"
#endif
namespace mozilla {
namespace dom {
@ -536,10 +539,10 @@ Promise::JSCallback(JSContext* aCx, unsigned aArgc, JS::Value* aVp)
PromiseCallback::Task task = static_cast<PromiseCallback::Task>(v.toInt32());
if (task == PromiseCallback::Resolve) {
promise->MaybeResolveInternal(aCx, args.get(0));
if (!promise->CaptureStack(aCx, promise->mFullfillmentStack)) {
return false;
}
promise->MaybeResolveInternal(aCx, args.get(0));
} else {
promise->MaybeRejectInternal(aCx, args.get(0));
if (!promise->CaptureStack(aCx, promise->mRejectionStack)) {
@ -1342,6 +1345,29 @@ Promise::RejectInternal(JSContext* aCx,
void
Promise::Settle(JS::Handle<JS::Value> aValue, PromiseState aState)
{
#ifdef MOZ_CRASHREPORTER
if (!mGlobal && mFullfillmentStack) {
AutoJSAPI jsapi;
jsapi.Init();
JSContext* cx = jsapi.cx();
JS::RootedObject stack(cx, mFullfillmentStack);
JSAutoCompartment ac(cx, stack);
JS::RootedString stackJSString(cx);
if (JS::BuildStackString(cx, stack, &stackJSString)) {
nsAutoJSString stackString;
if (stackString.init(cx, stackJSString)) {
// Put the string in the crash report here, since we're about to crash
CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("cced_promise_stack"),
NS_ConvertUTF16toUTF8(stackString));
} else {
JS_ClearPendingException(cx);
}
} else {
JS_ClearPendingException(cx);
}
}
#endif
if (mGlobal->IsDying()) {
return;
}