dgrove@google.com
4c0f559d23
git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@15 260f80e4-7a28-3924-810f-c04153c831b5
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
// Copyright (c) 2011, 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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#include <errno.h>
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#include <pthread.h>
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#include "vm/assert.h"
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#include "vm/isolate.h"
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namespace dart {
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#define VALIDATE_PTHREAD_RESULT(result) \
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if (result != 0) { \
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FATAL2("pthread error: %d (%s)", result, strerror(result)); \
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}
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// The single pthread key which stores all the thread local data for a
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// thread. Since an Isolate is the central repository for storing all
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// isolate specific information a single pthread key is sufficient.
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pthread_key_t isolate_key = PTHREAD_KEY_UNSET;
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void Isolate::SetCurrent(Isolate* current) {
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ASSERT(isolate_key != PTHREAD_KEY_UNSET);
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int result = pthread_setspecific(isolate_key, current);
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VALIDATE_PTHREAD_RESULT(result);
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}
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// Empty isolate init callback which is registered before VM isolate creation.
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static void* VMIsolateInitCallback(void* data) {
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return reinterpret_cast<void*>(1);
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}
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void Isolate::InitOnce() {
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ASSERT(isolate_key == PTHREAD_KEY_UNSET);
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int result = pthread_key_create(&isolate_key, NULL);
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// Make sure creating a key was successful.
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VALIDATE_PTHREAD_RESULT(result);
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ASSERT(isolate_key != PTHREAD_KEY_UNSET);
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init_callback_ = VMIsolateInitCallback;
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}
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} // namespace dart
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