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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 the V8 project authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "src/v8.h" | 5 #include "src/v8.h" |
| 6 | 6 |
| 7 #include "src/api.h" | 7 #include "src/api.h" |
| 8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
| 9 #include "src/debug.h" | 9 #include "src/debug.h" |
| 10 #include "src/execution.h" | 10 #include "src/execution.h" |
| 11 #include "src/regexp-stack.h" | 11 #include "src/regexp-stack.h" |
| 12 #include "src/v8threads.h" | 12 #include "src/v8threads.h" |
| 13 | 13 |
| 14 namespace v8 { | 14 namespace v8 { |
| 15 | 15 |
| 16 | 16 |
| 17 namespace { | 17 namespace { |
| 18 | 18 |
| 19 // Track whether this V8 instance has ever called v8::Locker. This allows the | 19 // Track whether this V8 instance has ever called v8::Locker. This allows the |
| 20 // API code to verify that the lock is always held when V8 is being entered. | 20 // API code to verify that the lock is always held when V8 is being entered. |
| 21 base::Atomic32 g_locker_was_ever_used_ = 0; | 21 base::Atomic32 g_locker_was_ever_used_ = 0; |
| 22 | 22 |
| 23 } // namespace | 23 } // namespace |
| 24 | 24 |
| 25 | 25 |
| 26 // Once the Locker is initialized, the current thread will be guaranteed to have | 26 // Once the Locker is initialized, the current thread will be guaranteed to have |
| 27 // the lock for a given isolate. | 27 // the lock for a given isolate. |
| 28 void Locker::Initialize(v8::Isolate* isolate) { | 28 void Locker::Initialize(v8::Isolate* isolate) { |
| 29 DCHECK(isolate != NULL); | 29 DCHECK(isolate != NULL); |
| 30 has_lock_= false; | 30 has_lock_ = false; |
| 31 top_level_ = true; | 31 top_level_ = true; |
| 32 isolate_ = reinterpret_cast<i::Isolate*>(isolate); | 32 isolate_ = reinterpret_cast<i::Isolate*>(isolate); |
| 33 // Record that the Locker has been used at least once. | 33 // Record that the Locker has been used at least once. |
| 34 base::NoBarrier_Store(&g_locker_was_ever_used_, 1); | 34 base::NoBarrier_Store(&g_locker_was_ever_used_, 1); |
| 35 // Get the big lock if necessary. | 35 // Get the big lock if necessary. |
| 36 if (!isolate_->thread_manager()->IsLockedByCurrentThread()) { | 36 if (!isolate_->thread_manager()->IsLockedByCurrentThread()) { |
| 37 isolate_->thread_manager()->Lock(); | 37 isolate_->thread_manager()->Lock(); |
| 38 has_lock_ = true; | 38 has_lock_ = true; |
| 39 | 39 |
| 40 // This may be a locker within an unlocker in which case we have to | 40 // This may be a locker within an unlocker in which case we have to |
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| 356 state = state->Next()) { | 356 state = state->Next()) { |
| 357 if (thread_id.Equals(state->id())) { | 357 if (thread_id.Equals(state->id())) { |
| 358 state->set_terminate_on_restore(true); | 358 state->set_terminate_on_restore(true); |
| 359 } | 359 } |
| 360 } | 360 } |
| 361 } | 361 } |
| 362 | 362 |
| 363 | 363 |
| 364 } // namespace internal | 364 } // namespace internal |
| 365 } // namespace v8 | 365 } // namespace v8 |
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