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1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2015, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/thread_registry.h" | 5 #include "vm/thread_registry.h" |
6 | 6 |
7 #include "vm/isolate.h" | 7 #include "vm/isolate.h" |
8 #include "vm/lockers.h" | 8 #include "vm/lockers.h" |
9 | 9 |
10 namespace dart { | 10 namespace dart { |
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69 Thread* ThreadRegistry::Schedule(Isolate* isolate, | 69 Thread* ThreadRegistry::Schedule(Isolate* isolate, |
70 bool is_mutator, | 70 bool is_mutator, |
71 bool bypass_safepoint) { | 71 bool bypass_safepoint) { |
72 MonitorLocker ml(monitor_); | 72 MonitorLocker ml(monitor_); |
73 // Wait for any rendezvous in progress. | 73 // Wait for any rendezvous in progress. |
74 while (!bypass_safepoint && in_rendezvous_) { | 74 while (!bypass_safepoint && in_rendezvous_) { |
75 ml.Wait(Monitor::kNoTimeout); | 75 ml.Wait(Monitor::kNoTimeout); |
76 } | 76 } |
77 Thread* thread = NULL; | 77 Thread* thread = NULL; |
78 OSThread* os_thread = OSThread::Current(); | 78 OSThread* os_thread = OSThread::Current(); |
79 ASSERT(os_thread != NULL); | 79 if (os_thread != NULL) { |
80 ASSERT(isolate->heap() != NULL); | 80 ASSERT(isolate->heap() != NULL); |
81 // First get a Thread structure. (we special case the mutator thread | 81 // First get a Thread structure. (we special case the mutator thread |
82 // by reusing the cached structure, see comment in 'thread_registry.h'). | 82 // by reusing the cached structure, see comment in 'thread_registry.h'). |
83 if (is_mutator) { | 83 if (is_mutator) { |
84 if (mutator_thread_ == NULL) { | 84 if (mutator_thread_ == NULL) { |
85 mutator_thread_ = GetThreadFromFreelist(isolate); | 85 mutator_thread_ = GetThreadFromFreelist(isolate); |
| 86 } |
| 87 thread = mutator_thread_; |
| 88 } else { |
| 89 thread = GetThreadFromFreelist(isolate); |
| 90 ASSERT(thread->api_top_scope() == NULL); |
86 } | 91 } |
87 thread = mutator_thread_; | 92 // Now add this Thread to the active list for the isolate. |
88 } else { | 93 AddThreadToActiveList(thread); |
89 thread = GetThreadFromFreelist(isolate); | 94 // Set up other values and set the TLS value. |
90 ASSERT(thread->api_top_scope() == NULL); | 95 thread->isolate_ = isolate; |
| 96 thread->heap_ = isolate->heap(); |
| 97 thread->set_os_thread(os_thread); |
| 98 os_thread->set_thread(thread); |
| 99 Thread::SetCurrent(thread); |
| 100 os_thread->EnableThreadInterrupts(); |
91 } | 101 } |
92 // Now add this Thread to the active list for the isolate. | |
93 AddThreadToActiveList(thread); | |
94 // Set up other values and set the TLS value. | |
95 thread->isolate_ = isolate; | |
96 thread->heap_ = isolate->heap(); | |
97 thread->set_os_thread(os_thread); | |
98 os_thread->set_thread(thread); | |
99 Thread::SetCurrent(thread); | |
100 os_thread->EnableThreadInterrupts(); | |
101 return thread; | 102 return thread; |
102 } | 103 } |
103 | 104 |
104 | 105 |
105 void ThreadRegistry::Unschedule(Thread* thread, | 106 void ThreadRegistry::Unschedule(Thread* thread, |
106 bool is_mutator, | 107 bool is_mutator, |
107 bool bypass_safepoint) { | 108 bool bypass_safepoint) { |
108 MonitorLocker ml(monitor_); | 109 MonitorLocker ml(monitor_); |
109 OSThread* os_thread = thread->os_thread(); | 110 OSThread* os_thread = thread->os_thread(); |
110 ASSERT(os_thread != NULL); | 111 ASSERT(os_thread != NULL); |
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237 intptr_t count = 0; | 238 intptr_t count = 0; |
238 Thread* current = active_list_; | 239 Thread* current = active_list_; |
239 while (current != NULL) { | 240 while (current != NULL) { |
240 ++count; | 241 ++count; |
241 current = current->next_; | 242 current = current->next_; |
242 } | 243 } |
243 return count; | 244 return count; |
244 } | 245 } |
245 | 246 |
246 } // namespace dart | 247 } // namespace dart |
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