|
|
|
|
@ -1739,9 +1739,6 @@ ConvertTranscodeResultToJSException(JSContext* cx, JS::TranscodeResult rv)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
CooperativeThreadMayYield(JSContext* cx);
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
Evaluate(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
{
|
|
|
|
|
@ -1827,52 +1824,6 @@ Evaluate(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!JS_GetProperty(cx, opts, "zoneGroup", &v))
|
|
|
|
|
return false;
|
|
|
|
|
if (!v.isUndefined()) {
|
|
|
|
|
if (global != JS_GetGlobalForObject(cx, &args.callee())) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "zoneGroup and global cannot both be specified.");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Find all eligible globals to execute in.
|
|
|
|
|
JS::AutoObjectVector eligibleGlobals(cx);
|
|
|
|
|
for (CompartmentsIter c(cx->runtime(), SkipAtoms); !c.done(); c.next()) {
|
|
|
|
|
// Compartments without globals and the self hosting global may
|
|
|
|
|
// not be entered.
|
|
|
|
|
if (!c->maybeGlobal() || cx->runtime()->isSelfHostingGlobal(c->maybeGlobal()))
|
|
|
|
|
continue;
|
|
|
|
|
|
|
|
|
|
// Globals in zone groups which are not in use by a cooperative
|
|
|
|
|
// thread may be entered.
|
|
|
|
|
if (!c->zone()->group()->ownerContext().context()) {
|
|
|
|
|
if (!eligibleGlobals.append(c->maybeGlobal()))
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Globals in zone groups which use exclusive locking may be
|
|
|
|
|
// entered, in which case this thread will yield until the zone
|
|
|
|
|
// group is available.
|
|
|
|
|
if (c->zone()->group()->useExclusiveLocking() && CooperativeThreadMayYield(cx)) {
|
|
|
|
|
if (!eligibleGlobals.append(c->maybeGlobal()))
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (eligibleGlobals.empty()) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "zoneGroup can only be used if another"
|
|
|
|
|
" cooperative thread has called cooperativeYield(true).");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Pick an eligible global to use based on the value of the zoneGroup property.
|
|
|
|
|
int32_t which;
|
|
|
|
|
if (!ToInt32(cx, v, &which))
|
|
|
|
|
return false;
|
|
|
|
|
which = Min<int32_t>(Max(which, 0), eligibleGlobals.length() - 1);
|
|
|
|
|
global = eligibleGlobals[which];
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!JS_GetProperty(cx, opts, "catchTermination", &v))
|
|
|
|
|
return false;
|
|
|
|
|
if (!v.isUndefined())
|
|
|
|
|
@ -3540,151 +3491,6 @@ EvalInContext(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
struct CooperationState
|
|
|
|
|
{
|
|
|
|
|
CooperationState()
|
|
|
|
|
: lock(mutexid::ShellThreadCooperation)
|
|
|
|
|
, idle(false)
|
|
|
|
|
, numThreads(0)
|
|
|
|
|
, yieldCount(0)
|
|
|
|
|
, singleThreaded(false)
|
|
|
|
|
{}
|
|
|
|
|
|
|
|
|
|
Mutex lock;
|
|
|
|
|
ConditionVariable cvar;
|
|
|
|
|
bool idle;
|
|
|
|
|
size_t numThreads;
|
|
|
|
|
uint64_t yieldCount;
|
|
|
|
|
bool singleThreaded;
|
|
|
|
|
};
|
|
|
|
|
static CooperationState* cooperationState = nullptr;
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeBeginWait(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
MOZ_ASSERT(cx == TlsContext.get());
|
|
|
|
|
JS_YieldCooperativeContext(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeEndWait(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
MOZ_ASSERT(cx == TlsContext.get());
|
|
|
|
|
LockGuard<Mutex> lock(cooperationState->lock);
|
|
|
|
|
|
|
|
|
|
cooperationState->cvar.wait(lock, [&] { return cooperationState->idle; });
|
|
|
|
|
|
|
|
|
|
JS_ResumeCooperativeContext(cx);
|
|
|
|
|
cooperationState->idle = false;
|
|
|
|
|
cooperationState->yieldCount++;
|
|
|
|
|
cooperationState->cvar.notify_all();
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeYield(bool terminating = false)
|
|
|
|
|
{
|
|
|
|
|
LockGuard<Mutex> lock(cooperationState->lock);
|
|
|
|
|
MOZ_ASSERT(!cooperationState->idle);
|
|
|
|
|
cooperationState->idle = true;
|
|
|
|
|
cooperationState->cvar.notify_all();
|
|
|
|
|
|
|
|
|
|
// Wait until another thread takes over control before returning, if there
|
|
|
|
|
// is another thread to do so.
|
|
|
|
|
if (!terminating && cooperationState->numThreads) {
|
|
|
|
|
uint64_t count = cooperationState->yieldCount;
|
|
|
|
|
cooperationState->cvar.wait(lock, [&] { return cooperationState->yieldCount != count; });
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
CooperativeThreadMayYield(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
if (!cx->runtime()->gc.canChangeActiveContext(cx))
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
if (GetShellContext(cx)->isWorker)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
if (cooperationState->singleThreaded)
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
// To avoid contention issues between threads, yields are not allowed while
|
|
|
|
|
// a thread has access to zone groups other than its original one, i.e. if
|
|
|
|
|
// the thread is inside an evaluate() call with a different zone group.
|
|
|
|
|
// This is not a limit which the browser has, but is necessary in the
|
|
|
|
|
// shell: the shell can have arbitrary interleavings between cooperative
|
|
|
|
|
// threads, whereas the browser has more control over which threads are
|
|
|
|
|
// running at different times.
|
|
|
|
|
for (ZoneGroupsIter group(cx->runtime()); !group.done(); group.next()) {
|
|
|
|
|
if (group->ownerContext().context() == cx && group != cx->zone()->group())
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeYieldCallback(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
MOZ_ASSERT(CooperativeThreadMayYield(cx));
|
|
|
|
|
CooperativeBeginWait(cx);
|
|
|
|
|
CooperativeYield();
|
|
|
|
|
CooperativeEndWait(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
CooperativeYieldThread(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
{
|
|
|
|
|
CallArgs args = CallArgsFromVp(argc, vp);
|
|
|
|
|
|
|
|
|
|
if (!CooperativeThreadMayYield(cx)) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "Yielding is not currently allowed");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
{
|
|
|
|
|
Maybe<JS::AutoRelinquishZoneGroups> artzg;
|
|
|
|
|
if ((args.length() > 0) && ToBoolean(args[0]))
|
|
|
|
|
artzg.emplace(cx);
|
|
|
|
|
|
|
|
|
|
CooperativeBeginWait(cx);
|
|
|
|
|
CooperativeYield();
|
|
|
|
|
CooperativeEndWait(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
args.rval().setUndefined();
|
|
|
|
|
return true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeBeginSingleThreadedExecution(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
MOZ_ASSERT(!cooperationState->singleThreaded);
|
|
|
|
|
|
|
|
|
|
// Yield until all other threads have exited any zone groups they are in.
|
|
|
|
|
while (true) {
|
|
|
|
|
bool done = true;
|
|
|
|
|
for (ZoneGroupsIter group(cx->runtime()); !group.done(); group.next()) {
|
|
|
|
|
if (!group->ownedByCurrentThread() && group->ownerContext().context())
|
|
|
|
|
done = false;
|
|
|
|
|
}
|
|
|
|
|
if (done)
|
|
|
|
|
break;
|
|
|
|
|
CooperativeBeginWait(cx);
|
|
|
|
|
CooperativeYield();
|
|
|
|
|
CooperativeEndWait(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
cooperationState->singleThreaded = true;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
CooperativeEndSingleThreadedExecution(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
if (cooperationState)
|
|
|
|
|
cooperationState->singleThreaded = false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
EnsureGeckoProfilingStackInstalled(JSContext* cx, ShellContext* sc)
|
|
|
|
|
{
|
|
|
|
|
@ -3707,16 +3513,11 @@ EnsureGeckoProfilingStackInstalled(JSContext* cx, ShellContext* sc)
|
|
|
|
|
struct WorkerInput
|
|
|
|
|
{
|
|
|
|
|
JSRuntime* parentRuntime;
|
|
|
|
|
JSContext* siblingContext;
|
|
|
|
|
char16_t* chars;
|
|
|
|
|
size_t length;
|
|
|
|
|
|
|
|
|
|
WorkerInput(JSRuntime* parentRuntime, char16_t* chars, size_t length)
|
|
|
|
|
: parentRuntime(parentRuntime), siblingContext(nullptr), chars(chars), length(length)
|
|
|
|
|
{}
|
|
|
|
|
|
|
|
|
|
WorkerInput(JSContext* siblingContext, char16_t* chars, size_t length)
|
|
|
|
|
: parentRuntime(nullptr), siblingContext(siblingContext), chars(chars), length(length)
|
|
|
|
|
: parentRuntime(parentRuntime), chars(chars), length(length)
|
|
|
|
|
{}
|
|
|
|
|
|
|
|
|
|
~WorkerInput() {
|
|
|
|
|
@ -3731,16 +3532,12 @@ static void
|
|
|
|
|
WorkerMain(void* arg)
|
|
|
|
|
{
|
|
|
|
|
WorkerInput* input = (WorkerInput*) arg;
|
|
|
|
|
MOZ_ASSERT(!!input->parentRuntime != !!input->siblingContext);
|
|
|
|
|
MOZ_ASSERT(input->parentRuntime);
|
|
|
|
|
|
|
|
|
|
JSContext* cx = input->parentRuntime
|
|
|
|
|
? JS_NewContext(8L * 1024L * 1024L, 2L * 1024L * 1024L, input->parentRuntime)
|
|
|
|
|
: JS_NewCooperativeContext(input->siblingContext);
|
|
|
|
|
JSContext* cx = JS_NewContext(8L * 1024L * 1024L, 2L * 1024L * 1024L, input->parentRuntime);
|
|
|
|
|
if (!cx)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
SetCooperativeYieldCallback(cx, CooperativeYieldCallback);
|
|
|
|
|
|
|
|
|
|
ShellContext* sc = js_new<ShellContext>(cx);
|
|
|
|
|
if (!sc)
|
|
|
|
|
return;
|
|
|
|
|
@ -3749,10 +3546,6 @@ WorkerMain(void* arg)
|
|
|
|
|
CancelOffThreadJobsForContext(cx);
|
|
|
|
|
JS_DestroyContext(cx);
|
|
|
|
|
js_delete(sc);
|
|
|
|
|
if (input->siblingContext) {
|
|
|
|
|
cooperationState->numThreads--;
|
|
|
|
|
CooperativeYield(/* terminating = */ true);
|
|
|
|
|
}
|
|
|
|
|
js_delete(input);
|
|
|
|
|
});
|
|
|
|
|
|
|
|
|
|
@ -3790,8 +3583,6 @@ WorkerMain(void* arg)
|
|
|
|
|
|
|
|
|
|
JS::CompartmentOptions compartmentOptions;
|
|
|
|
|
SetStandardCompartmentOptions(compartmentOptions);
|
|
|
|
|
if (input->siblingContext)
|
|
|
|
|
compartmentOptions.creationOptions().setNewZoneInNewZoneGroup();
|
|
|
|
|
|
|
|
|
|
RootedObject global(cx, NewGlobalObject(cx, compartmentOptions, nullptr));
|
|
|
|
|
if (!global)
|
|
|
|
|
@ -3831,7 +3622,7 @@ class MOZ_RAII AutoLockWorkerThreads : public LockGuard<Mutex>
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
EvalInThread(JSContext* cx, unsigned argc, Value* vp, bool cooperative)
|
|
|
|
|
EvalInWorker(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
{
|
|
|
|
|
if (!CanUseExtraThreads()) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "Can't create threads with --no-threads");
|
|
|
|
|
@ -3851,25 +3642,6 @@ EvalInThread(JSContext* cx, unsigned argc, Value* vp, bool cooperative)
|
|
|
|
|
}
|
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
|
if (cooperative && GetShellContext(cx)->isWorker) {
|
|
|
|
|
// Disallowing cooperative multithreading in worker runtimes allows
|
|
|
|
|
// yield state to be process wide, and some other simplifications.
|
|
|
|
|
// When we have a better idea of how cooperative multithreading will be
|
|
|
|
|
// used in the browser this restriction might be relaxed.
|
|
|
|
|
JS_ReportErrorASCII(cx, "Cooperative multithreading in worker runtimes is not supported");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (cooperative && !cx->runtime()->gc.canChangeActiveContext(cx)) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "Cooperating multithreading context switches are not currently allowed");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (cooperative && cooperationState->singleThreaded) {
|
|
|
|
|
JS_ReportErrorASCII(cx, "Creating cooperative threads is not allowed while single threaded");
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!args[0].toString()->ensureLinear(cx))
|
|
|
|
|
return false;
|
|
|
|
|
|
|
|
|
|
@ -3891,20 +3663,12 @@ EvalInThread(JSContext* cx, unsigned argc, Value* vp, bool cooperative)
|
|
|
|
|
|
|
|
|
|
CopyChars(chars, *str);
|
|
|
|
|
|
|
|
|
|
WorkerInput* input =
|
|
|
|
|
cooperative
|
|
|
|
|
? js_new<WorkerInput>(cx, chars, str->length())
|
|
|
|
|
: js_new<WorkerInput>(JS_GetParentRuntime(cx), chars, str->length());
|
|
|
|
|
WorkerInput* input = js_new<WorkerInput>(JS_GetParentRuntime(cx), chars, str->length());
|
|
|
|
|
if (!input) {
|
|
|
|
|
ReportOutOfMemory(cx);
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (cooperative) {
|
|
|
|
|
cooperationState->numThreads++;
|
|
|
|
|
CooperativeBeginWait(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
Thread* thread;
|
|
|
|
|
{
|
|
|
|
|
AutoEnterOOMUnsafeRegion oomUnsafe;
|
|
|
|
|
@ -3913,33 +3677,17 @@ EvalInThread(JSContext* cx, unsigned argc, Value* vp, bool cooperative)
|
|
|
|
|
oomUnsafe.crash("EvalInThread");
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (cooperative) {
|
|
|
|
|
CooperativeEndWait(cx);
|
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} else {
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AutoLockWorkerThreads alwt;
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if (!workerThreads.append(thread)) {
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|
ReportOutOfMemory(cx);
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thread->join();
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return false;
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|
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}
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}
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args.rval().setUndefined();
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return true;
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|
|
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|
}
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|
static bool
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|
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EvalInWorker(JSContext* cx, unsigned argc, Value* vp)
|
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|
|
|
{
|
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|
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|
return EvalInThread(cx, argc, vp, false);
|
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|
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|
}
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|
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|
static bool
|
|
|
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|
EvalInCooperativeThread(JSContext* cx, unsigned argc, Value* vp)
|
|
|
|
|
{
|
|
|
|
|
return EvalInThread(cx, argc, vp, true);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static bool
|
|
|
|
|
ShapeOf(JSContext* cx, unsigned argc, JS::Value* vp)
|
|
|
|
|
{
|
|
|
|
|
@ -4122,13 +3870,6 @@ KillWorkerThreads(JSContext* cx)
|
|
|
|
|
{
|
|
|
|
|
MOZ_ASSERT_IF(!CanUseExtraThreads(), workerThreads.empty());
|
|
|
|
|
|
|
|
|
|
// Yield until all other cooperative threads in the main runtime finish.
|
|
|
|
|
while (cooperationState->numThreads) {
|
|
|
|
|
CooperativeBeginWait(cx);
|
|
|
|
|
CooperativeYield();
|
|
|
|
|
CooperativeEndWait(cx);
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
if (!workerThreadsLock) {
|
|
|
|
|
MOZ_ASSERT(workerThreads.empty());
|
|
|
|
|
return;
|
|
|
|
|
@ -4152,9 +3893,6 @@ KillWorkerThreads(JSContext* cx)
|
|
|
|
|
|
|
|
|
|
js_delete(workerThreadsLock);
|
|
|
|
|
workerThreadsLock = nullptr;
|
|
|
|
|
|
|
|
|
|
js_delete(cooperationState);
|
|
|
|
|
cooperationState = nullptr;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static void
|
|
|
|
|
@ -6972,16 +6710,6 @@ static const JSFunctionSpecWithHelp shell_functions[] = {
|
|
|
|
|
"evalInWorker(str)",
|
|
|
|
|
" Evaluate 'str' in a separate thread with its own runtime.\n"),
|
|
|
|
|
|
|
|
|
|
JS_FN_HELP("evalInCooperativeThread", EvalInCooperativeThread, 1, 0,
|
|
|
|
|
"evalInCooperativeThread(str)",
|
|
|
|
|
" Evaluate 'str' in a separate cooperatively scheduled thread using the same runtime.\n"),
|
|
|
|
|
|
|
|
|
|
JS_FN_HELP("cooperativeYield", CooperativeYieldThread, 1, 0,
|
|
|
|
|
"cooperativeYield(leaveZoneGroup)",
|
|
|
|
|
" Yield execution to another cooperatively scheduled thread using the same runtime.\n"
|
|
|
|
|
" If leaveZoneGroup is specified then other threads may execute code in the\n"
|
|
|
|
|
" current thread's zone group via evaluate(..., {zoneGroup:N}).\n"),
|
|
|
|
|
|
|
|
|
|
JS_FN_HELP("getSharedArrayBuffer", GetSharedArrayBuffer, 0, 0,
|
|
|
|
|
"getSharedArrayBuffer()",
|
|
|
|
|
" Retrieve the SharedArrayBuffer object from the cross-worker mailbox.\n"
|
|
|
|
|
@ -9419,12 +9147,6 @@ main(int argc, char** argv, char** envp)
|
|
|
|
|
|
|
|
|
|
js::SetPreserveWrapperCallback(cx, DummyPreserveWrapperCallback);
|
|
|
|
|
|
|
|
|
|
cooperationState = js_new<CooperationState>();
|
|
|
|
|
JS::SetSingleThreadedExecutionCallbacks(cx,
|
|
|
|
|
CooperativeBeginSingleThreadedExecution,
|
|
|
|
|
CooperativeEndSingleThreadedExecution);
|
|
|
|
|
SetCooperativeYieldCallback(cx, CooperativeYieldCallback);
|
|
|
|
|
|
|
|
|
|
result = Shell(cx, &op, envp);
|
|
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
|
|
Jan de Mooij