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Issue 23625003: Cleanup Mutex and related classes. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: REBASE Created 7 years, 3 months ago
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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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86 // determining that pointers are outside the heap (used mostly in assertions 86 // determining that pointers are outside the heap (used mostly in assertions
87 // and verification). The estimate is conservative, i.e., not all addresses in 87 // and verification). The estimate is conservative, i.e., not all addresses in
88 // 'allocated' space are actually allocated to our heap. The range is 88 // 'allocated' space are actually allocated to our heap. The range is
89 // [lowest, highest), inclusive on the low and and exclusive on the high end. 89 // [lowest, highest), inclusive on the low and and exclusive on the high end.
90 static void* lowest_ever_allocated = reinterpret_cast<void*>(-1); 90 static void* lowest_ever_allocated = reinterpret_cast<void*>(-1);
91 static void* highest_ever_allocated = reinterpret_cast<void*>(0); 91 static void* highest_ever_allocated = reinterpret_cast<void*>(0);
92 92
93 93
94 static void UpdateAllocatedSpaceLimits(void* address, int size) { 94 static void UpdateAllocatedSpaceLimits(void* address, int size) {
95 ASSERT(limit_mutex != NULL); 95 ASSERT(limit_mutex != NULL);
96 ScopedLock lock(limit_mutex); 96 LockGuard<Mutex> lock(limit_mutex);
97 97
98 lowest_ever_allocated = Min(lowest_ever_allocated, address); 98 lowest_ever_allocated = Min(lowest_ever_allocated, address);
99 highest_ever_allocated = 99 highest_ever_allocated =
100 Max(highest_ever_allocated, 100 Max(highest_ever_allocated,
101 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size)); 101 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size));
102 } 102 }
103 103
104 104
105 bool OS::IsOutsideAllocatedSpace(void* address) { 105 bool OS::IsOutsideAllocatedSpace(void* address) {
106 return address < lowest_ever_allocated || address >= highest_ever_allocated; 106 return address < lowest_ever_allocated || address >= highest_ever_allocated;
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436 436
437 Semaphore* OS::CreateSemaphore(int count) { 437 Semaphore* OS::CreateSemaphore(int count) {
438 return new MacOSSemaphore(count); 438 return new MacOSSemaphore(count);
439 } 439 }
440 440
441 441
442 void OS::SetUp() { 442 void OS::SetUp() {
443 // Seed the random number generator. We preserve microsecond resolution. 443 // Seed the random number generator. We preserve microsecond resolution.
444 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()) ^ (getpid() << 16); 444 uint64_t seed = static_cast<uint64_t>(TimeCurrentMillis()) ^ (getpid() << 16);
445 srandom(static_cast<unsigned int>(seed)); 445 srandom(static_cast<unsigned int>(seed));
446 limit_mutex = CreateMutex(); 446 limit_mutex = new Mutex();
447 } 447 }
448 448
449 449
450 void OS::TearDown() { 450 void OS::TearDown() {
451 delete limit_mutex; 451 delete limit_mutex;
452 } 452 }
453 453
454 454
455 } } // namespace v8::internal 455 } } // namespace v8::internal
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