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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "TimeoutHandler.h"
#include "mozilla/Assertions.h"
#include "mozilla/HoldDropJSObjects.h"
#include "nsJSUtils.h"
namespace mozilla::dom {
//-----------------------------------------------------------------------------
// TimeoutHandler
//-----------------------------------------------------------------------------
TimeoutHandler::TimeoutHandler(JSContext* aCx) : TimeoutHandler() {
nsJSUtils::GetCallingLocation(aCx, mFileName, &mLineNo, &mColumn);
}
bool TimeoutHandler::Call(const char* /* unused */) { return false; }
void TimeoutHandler::GetLocation(const char** aFileName, uint32_t* aLineNo,
uint32_t* aColumn) {
*aFileName = mFileName.get();
*aLineNo = mLineNo;
*aColumn = mColumn;
}
void TimeoutHandler::GetDescription(nsACString& aOutString) {
aOutString.AppendPrintf("<generic handler> (%s:%d:%d)", mFileName.get(),
mLineNo, mColumn);
}
//-----------------------------------------------------------------------------
// ScriptTimeoutHandler
//-----------------------------------------------------------------------------
ScriptTimeoutHandler::ScriptTimeoutHandler(JSContext* aCx,
nsIGlobalObject* aGlobal,
const nsAString& aExpression)
: TimeoutHandler(aCx), mGlobal(aGlobal), mExpr(aExpression) {}
NS_IMPL_CYCLE_COLLECTION_CLASS(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(ScriptTimeoutHandler)
if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
nsAutoCString name("ScriptTimeoutHandler");
name.AppendLiteral(" [");
name.Append(tmp->mFileName);
name.Append(':');
name.AppendInt(tmp->mLineNo);
name.Append(':');
name.AppendInt(tmp->mColumn);
name.Append(']');
cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name.get());
} else {
NS_IMPL_CYCLE_COLLECTION_DESCRIBE(ScriptTimeoutHandler, tmp->mRefCnt.get())
}
// If we need to make TimeoutHandler CCed, don't call its Traverse method
// here, otherwise we ends up report same object twice if logging is on. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=1588208.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ScriptTimeoutHandler)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(ScriptTimeoutHandler)
NS_IMPL_CYCLE_COLLECTING_RELEASE(ScriptTimeoutHandler)
void ScriptTimeoutHandler::GetDescription(nsACString& aOutString) {
if (mExpr.Length() > 15) {
aOutString.AppendPrintf(
"<string handler (truncated): \"%s...\"> (%s:%d:%d)",
NS_ConvertUTF16toUTF8(Substring(mExpr, 0, 13)).get(), mFileName.get(),
mLineNo, mColumn);
} else {
aOutString.AppendPrintf("<string handler: \"%s\"> (%s:%d:%d)",
NS_ConvertUTF16toUTF8(mExpr).get(), mFileName.get(),
mLineNo, mColumn);
}
}
//-----------------------------------------------------------------------------
// CallbackTimeoutHandler
//-----------------------------------------------------------------------------
CallbackTimeoutHandler::CallbackTimeoutHandler(
JSContext* aCx, nsIGlobalObject* aGlobal, Function* aFunction,
nsTArray<JS::Heap<JS::Value>>&& aArguments)
: TimeoutHandler(aCx), mGlobal(aGlobal), mFunction(aFunction) {
mozilla::HoldJSObjects(this);
mArgs = std::move(aArguments);
}
NS_IMPL_CYCLE_COLLECTION_MULTI_ZONE_JSHOLDER_CLASS(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mGlobal)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFunction)
tmp->ReleaseJSObjects();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(CallbackTimeoutHandler)
if (MOZ_UNLIKELY(cb.WantDebugInfo())) {
nsAutoCString name("CallbackTimeoutHandler");
JSObject* obj = tmp->mFunction->CallablePreserveColor();
JSFunction* fun =
JS_GetObjectFunction(js::UncheckedUnwrapWithoutExpose(obj));
if (fun && JS_GetFunctionId(fun)) {
JSLinearString* funId = JS_ASSERT_STRING_IS_LINEAR(JS_GetFunctionId(fun));
size_t size = 1 + JS_PutEscapedLinearString(nullptr, 0, funId, 0);
char* funIdName = new char[size];
if (funIdName) {
JS_PutEscapedLinearString(funIdName, size, funId, 0);
name.AppendLiteral(" [");
name.Append(funIdName);
delete[] funIdName;
name.Append(']');
}
}
cb.DescribeRefCountedNode(tmp->mRefCnt.get(), name.get());
} else {
NS_IMPL_CYCLE_COLLECTION_DESCRIBE(CallbackTimeoutHandler,
tmp->mRefCnt.get())
}
// If we need to make TimeoutHandler CCed, don't call its Traverse method
// here, otherwise we ends up report same object twice if logging is on. See
// https://bugzilla.mozilla.org/show_bug.cgi?id=1588208.
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGlobal)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFunction)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(CallbackTimeoutHandler)
for (size_t i = 0; i < tmp->mArgs.Length(); ++i) {
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mArgs[i])
}
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(CallbackTimeoutHandler)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(CallbackTimeoutHandler)
NS_IMPL_CYCLE_COLLECTING_RELEASE(CallbackTimeoutHandler)
void CallbackTimeoutHandler::ReleaseJSObjects() {
mArgs.Clear();
mozilla::DropJSObjects(this);
}
bool CallbackTimeoutHandler::Call(const char* aExecutionReason) {
IgnoredErrorResult rv;
JS::Rooted<JS::Value> ignoredVal(RootingCx());
MOZ_KnownLive(mFunction)->Call(MOZ_KnownLive(mGlobal), mArgs, &ignoredVal, rv,
aExecutionReason);
return !rv.IsUncatchableException();
}
void CallbackTimeoutHandler::MarkForCC() { mFunction->MarkForCC(); }
void CallbackTimeoutHandler::GetDescription(nsACString& aOutString) {
mFunction->GetDescription(aOutString);
}
} // namespace mozilla::dom
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