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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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348 return true; | 348 return true; |
349 } | 349 } |
350 | 350 |
351 | 351 |
352 bool VirtualMemory::Uncommit(void* address, size_t size) { | 352 bool VirtualMemory::Uncommit(void* address, size_t size) { |
353 ASSERT(IsReserved()); | 353 ASSERT(IsReserved()); |
354 return VirtualFree(address, size, MEM_DECOMMIT) != false; | 354 return VirtualFree(address, size, MEM_DECOMMIT) != false; |
355 } | 355 } |
356 | 356 |
357 | 357 |
358 bool VirtualMemory::Guard(void* address) { | |
359 if (NULL == VirtualAlloc(address, | |
360 OS::CommitPageSize(), | |
361 MEM_COMMIT, | |
362 PAGE_READONLY | PAGE_GUARD)) { | |
Erik Corry
2012/02/23 12:00:40
Can we not map it with no permissions at all, inst
| |
363 return false; | |
364 } | |
365 return true; | |
366 } | |
367 | |
368 | |
358 class Thread::PlatformData : public Malloced { | 369 class Thread::PlatformData : public Malloced { |
359 public: | 370 public: |
360 PlatformData() : thread_(kNoThread) {} | 371 PlatformData() : thread_(kNoThread) {} |
361 pthread_t thread_; // Thread handle for pthread. | 372 pthread_t thread_; // Thread handle for pthread. |
362 }; | 373 }; |
363 | 374 |
364 | 375 |
365 | 376 |
366 | 377 |
367 Thread::Thread(const Options& options) | 378 Thread::Thread(const Options& options) |
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750 | 761 |
751 | 762 |
752 void Sampler::Stop() { | 763 void Sampler::Stop() { |
753 ASSERT(IsActive()); | 764 ASSERT(IsActive()); |
754 SamplerThread::RemoveActiveSampler(this); | 765 SamplerThread::RemoveActiveSampler(this); |
755 SetActive(false); | 766 SetActive(false); |
756 } | 767 } |
757 | 768 |
758 | 769 |
759 } } // namespace v8::internal | 770 } } // namespace v8::internal |
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