mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 00:13:50 +00:00
![Aske Simon Christensen](/assets/img/avatar_default.png)
TEST=ci, asan Change-Id: I8ed9d50f10eeb483deefb89ec84d6c71591833ac Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/234602 Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Aske Simon Christensen <askesc@google.com>
175 lines
6.2 KiB
C++
175 lines
6.2 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
|
|
// for details. All rights reserved. Use of this source code is governed by a
|
|
// BSD-style license that can be found in the LICENSE file.
|
|
|
|
#include "vm/isolate.h"
|
|
#include "include/dart_api.h"
|
|
#include "platform/assert.h"
|
|
#include "vm/globals.h"
|
|
#include "vm/lockers.h"
|
|
#include "vm/thread_barrier.h"
|
|
#include "vm/thread_pool.h"
|
|
#include "vm/unit_test.h"
|
|
|
|
namespace dart {
|
|
|
|
VM_UNIT_TEST_CASE(IsolateCurrent) {
|
|
Dart_Isolate isolate = TestCase::CreateTestIsolate();
|
|
EXPECT_EQ(isolate, Dart_CurrentIsolate());
|
|
Dart_ShutdownIsolate();
|
|
EXPECT_EQ(reinterpret_cast<Dart_Isolate>(NULL), Dart_CurrentIsolate());
|
|
}
|
|
|
|
// Test to ensure that an exception is thrown if no isolate creation
|
|
// callback has been set by the embedder when an isolate is spawned.
|
|
void IsolateSpawn(const char* platform_script_value) {
|
|
char* scriptChars = OS::SCreate(
|
|
nullptr,
|
|
"import 'dart:isolate';\n"
|
|
// Ignores printed lines.
|
|
"var _nullPrintClosure = (String line) {};\n"
|
|
"var _platformScript = () => Uri.parse(\"%s\");\n"
|
|
"void entry(message) {}\n"
|
|
"void testMain() {\n"
|
|
" Isolate.spawn(entry, null);\n"
|
|
// TODO(floitsch): the following code is only to bump the event loop
|
|
// so it executes asynchronous microtasks.
|
|
" var rp = RawReceivePort();\n"
|
|
" rp.sendPort.send(null);\n"
|
|
" rp.handler = (_) { rp.close(); };\n"
|
|
"}\n",
|
|
platform_script_value);
|
|
|
|
Dart_Handle test_lib = TestCase::LoadTestScript(scriptChars, NULL);
|
|
|
|
free(scriptChars);
|
|
|
|
// Setup the internal library's 'internalPrint' function.
|
|
// Necessary because asynchronous errors use "print" to print their
|
|
// stack trace.
|
|
Dart_Handle url = NewString("dart:_internal");
|
|
EXPECT_VALID(url);
|
|
Dart_Handle internal_lib = Dart_LookupLibrary(url);
|
|
EXPECT_VALID(internal_lib);
|
|
Dart_Handle print = Dart_GetField(test_lib, NewString("_nullPrintClosure"));
|
|
EXPECT_VALID(print);
|
|
Dart_Handle result =
|
|
Dart_SetField(internal_lib, NewString("_printClosure"), print);
|
|
EXPECT_VALID(result);
|
|
|
|
Dart_Handle platform_script =
|
|
Dart_GetField(test_lib, NewString("_platformScript"));
|
|
EXPECT_VALID(platform_script);
|
|
Dart_Handle vmlibraryhooks_class =
|
|
Dart_GetClass(internal_lib, NewString("VMLibraryHooks"));
|
|
EXPECT_VALID(vmlibraryhooks_class);
|
|
result = Dart_SetField(vmlibraryhooks_class, NewString("platformScript"),
|
|
platform_script);
|
|
EXPECT_VALID(result);
|
|
|
|
// Setup the 'scheduleImmediate' closure.
|
|
url = NewString("dart:isolate");
|
|
EXPECT_VALID(url);
|
|
Dart_Handle isolate_lib = Dart_LookupLibrary(url);
|
|
EXPECT_VALID(isolate_lib);
|
|
Dart_Handle schedule_immediate_closure = Dart_Invoke(
|
|
isolate_lib, NewString("_getIsolateScheduleImmediateClosure"), 0, NULL);
|
|
Dart_Handle args[1];
|
|
args[0] = schedule_immediate_closure;
|
|
url = NewString("dart:async");
|
|
EXPECT_VALID(url);
|
|
Dart_Handle async_lib = Dart_LookupLibrary(url);
|
|
EXPECT_VALID(async_lib);
|
|
EXPECT_VALID(Dart_Invoke(async_lib, NewString("_setScheduleImmediateClosure"),
|
|
1, args));
|
|
|
|
result = Dart_Invoke(test_lib, NewString("testMain"), 0, NULL);
|
|
EXPECT_VALID(result);
|
|
// Run until all ports to isolate are closed.
|
|
result = Dart_RunLoop();
|
|
EXPECT_ERROR(
|
|
result,
|
|
"Lightweight isolate spawn is not supported by this Dart embedder");
|
|
EXPECT(Dart_ErrorHasException(result));
|
|
Dart_Handle exception_result = Dart_ErrorGetException(result);
|
|
EXPECT_VALID(exception_result);
|
|
}
|
|
|
|
TEST_CASE(IsolateSpawn_FileUri) {
|
|
IsolateSpawn("file:/a.dart");
|
|
}
|
|
|
|
TEST_CASE(IsolateSpawn_PackageUri) {
|
|
IsolateSpawn("package:/a.dart");
|
|
}
|
|
|
|
class InterruptChecker : public ThreadPool::Task {
|
|
public:
|
|
static const intptr_t kTaskCount;
|
|
static const intptr_t kIterations;
|
|
|
|
InterruptChecker(Thread* thread, ThreadBarrier* barrier)
|
|
: thread_(thread), barrier_(barrier) {}
|
|
|
|
virtual void Run() {
|
|
Thread::EnterIsolateAsHelper(thread_->isolate(), Thread::kUnknownTask);
|
|
// Tell main thread that we are ready.
|
|
barrier_->Sync();
|
|
for (intptr_t i = 0; i < kIterations; ++i) {
|
|
// Busy wait for interrupts.
|
|
uword limit = 0;
|
|
do {
|
|
limit = reinterpret_cast<RelaxedAtomic<uword>*>(
|
|
thread_->stack_limit_address())
|
|
->load();
|
|
} while (
|
|
(limit == thread_->saved_stack_limit_) ||
|
|
(((limit & Thread::kInterruptsMask) & Thread::kVMInterrupt) == 0));
|
|
// Tell main thread that we observed the interrupt.
|
|
barrier_->Sync();
|
|
}
|
|
Thread::ExitIsolateAsHelper();
|
|
barrier_->Sync();
|
|
barrier_->Release();
|
|
}
|
|
|
|
private:
|
|
Thread* thread_;
|
|
ThreadBarrier* barrier_;
|
|
};
|
|
|
|
const intptr_t InterruptChecker::kTaskCount = 5;
|
|
const intptr_t InterruptChecker::kIterations = 10;
|
|
|
|
// Test and document usage of Isolate::HasInterruptsScheduled.
|
|
//
|
|
// Go through a number of rounds of scheduling interrupts and waiting until all
|
|
// unsynchronized busy-waiting tasks observe it (in the current implementation,
|
|
// the exact latency depends on cache coherence). Synchronization is then used
|
|
// to ensure that the response to the interrupt, i.e., starting a new round,
|
|
// happens *after* the interrupt is observed. Without this synchronization, the
|
|
// compiler and/or CPU could reorder operations to make the tasks observe the
|
|
// round update *before* the interrupt is set.
|
|
TEST_CASE(StackLimitInterrupts) {
|
|
ThreadBarrier* barrier = new ThreadBarrier(InterruptChecker::kTaskCount + 1,
|
|
InterruptChecker::kTaskCount + 1);
|
|
// Start all tasks. They will busy-wait until interrupted in the first round.
|
|
for (intptr_t task = 0; task < InterruptChecker::kTaskCount; task++) {
|
|
Dart::thread_pool()->Run<InterruptChecker>(thread, barrier);
|
|
}
|
|
// Wait for all tasks to get ready for the first round.
|
|
barrier->Sync();
|
|
for (intptr_t i = 0; i < InterruptChecker::kIterations; ++i) {
|
|
thread->ScheduleInterrupts(Thread::kVMInterrupt);
|
|
// Wait for all tasks to observe the interrupt.
|
|
barrier->Sync();
|
|
// Continue with next round.
|
|
uword interrupts = thread->GetAndClearInterrupts();
|
|
EXPECT((interrupts & Thread::kVMInterrupt) != 0);
|
|
}
|
|
barrier->Sync();
|
|
barrier->Release();
|
|
}
|
|
|
|
} // namespace dart
|