koda@google.com
642ff6ebb4
These 'volatile' modifiers were added to silence warnings about setjmp/longjmp clobbering, but 'const' works too and allows more optimization. TBR=iposva@google.com Review URL: https://codereview.chromium.org//1037333002 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@44749 260f80e4-7a28-3924-810f-c04153c831b5
56 lines
1.3 KiB
C++
56 lines
1.3 KiB
C++
// Copyright (c) 2015, 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 "vm/base_isolate.h"
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#include "vm/globals.h"
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#include "vm/os_thread.h"
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namespace dart {
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class CHA;
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class Isolate;
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// A VM thread; may be executing Dart code or performing helper tasks like
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// garbage collection or compilation.
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class Thread {
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public:
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explicit Thread(Isolate* isolate)
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: isolate_(isolate),
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cha_(NULL) {}
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static void InitOnce();
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static Thread* Current() {
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return reinterpret_cast<Thread*>(OSThread::GetThreadLocal(thread_key_));
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}
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static void SetCurrent(Thread* current);
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// The topmost zone used for allocation in this thread.
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Zone* zone() {
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return reinterpret_cast<BaseIsolate*>(isolate())->current_zone();
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}
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// The isolate that this thread is operating on, or NULL if none.
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Isolate* isolate() const { return isolate_; }
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// The (topmost) CHA for the compilation in this thread.
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CHA* cha() const { return cha_; }
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void set_cha(CHA* value) { cha_ = value; }
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private:
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static ThreadLocalKey thread_key_;
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Isolate* isolate_;
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CHA* cha_;
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DISALLOW_COPY_AND_ASSIGN(Thread);
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};
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} // namespace dart
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#endif // VM_THREAD_H_
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