iposva@google.com
4835041da9
- Protect access to the free lists. - MutexLocker/MonitorLocker do not need to be StackResources. R=koda@google.com Review URL: https://codereview.chromium.org//474913004 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@39396 260f80e4-7a28-3924-810f-c04153c831b5
111 lines
2.4 KiB
C++
111 lines
2.4 KiB
C++
// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef VM_THREAD_H_
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#define VM_THREAD_H_
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#include "platform/globals.h"
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// Declare the OS-specific types ahead of defining the generic classes.
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#if defined(TARGET_OS_ANDROID)
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#include "vm/thread_android.h"
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#elif defined(TARGET_OS_LINUX)
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#include "vm/thread_linux.h"
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#elif defined(TARGET_OS_MACOS)
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#include "vm/thread_macos.h"
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#elif defined(TARGET_OS_WINDOWS)
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#include "vm/thread_win.h"
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#else
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#error Unknown target os.
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#endif
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namespace dart {
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class Isolate;
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class Thread {
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public:
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static ThreadLocalKey kUnsetThreadLocalKey;
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static ThreadId kInvalidThreadId;
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typedef void (*ThreadStartFunction) (uword parameter);
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// Start a thread running the specified function. Returns 0 if the
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// thread started successfuly and a system specific error code if
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// the thread failed to start.
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static int Start(ThreadStartFunction function, uword parameters);
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static ThreadLocalKey CreateThreadLocal();
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static void DeleteThreadLocal(ThreadLocalKey key);
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static uword GetThreadLocal(ThreadLocalKey key) {
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return ThreadInlineImpl::GetThreadLocal(key);
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}
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static void SetThreadLocal(ThreadLocalKey key, uword value);
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static intptr_t GetMaxStackSize();
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static ThreadId GetCurrentThreadId();
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static bool Join(ThreadId id);
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static intptr_t ThreadIdToIntPtr(ThreadId id);
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static bool Compare(ThreadId a, ThreadId b);
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static void GetThreadCpuUsage(ThreadId thread_id, int64_t* cpu_usage);
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};
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class Mutex {
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public:
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Mutex();
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~Mutex();
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void Lock();
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bool TryLock();
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void Unlock();
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#if defined(DEBUG)
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Isolate* Owner() const { return owner_; }
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#endif // defined(DEBUG)
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private:
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MutexData data_;
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#if defined(DEBUG)
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Isolate* owner_;
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#endif // defined(DEBUG)
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DISALLOW_COPY_AND_ASSIGN(Mutex);
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};
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class Monitor {
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public:
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enum WaitResult {
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kNotified,
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kTimedOut
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};
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static const int64_t kNoTimeout = 0;
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Monitor();
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~Monitor();
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void Enter();
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void Exit();
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// Wait for notification or timeout.
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WaitResult Wait(int64_t millis);
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WaitResult WaitMicros(int64_t micros);
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// Notify waiting threads.
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void Notify();
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void NotifyAll();
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private:
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MonitorData data_; // OS-specific data.
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DISALLOW_COPY_AND_ASSIGN(Monitor);
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};
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} // namespace dart
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#endif // VM_THREAD_H_
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