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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 // Platform-specific code for POSIX goes here. This is not a platform on its | 5 // Platform-specific code for POSIX goes here. This is not a platform on its |
6 // own, but contains the parts which are the same across the POSIX platforms | 6 // own, but contains the parts which are the same across the POSIX platforms |
7 // Linux, MacOS, FreeBSD, OpenBSD, NetBSD and QNX. | 7 // Linux, MacOS, FreeBSD, OpenBSD, NetBSD and QNX. |
8 | 8 |
9 #include <dlfcn.h> | 9 #include <dlfcn.h> |
10 #include <pthread.h> | 10 #include <pthread.h> |
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48 | 48 |
49 namespace v8 { | 49 namespace v8 { |
50 namespace internal { | 50 namespace internal { |
51 | 51 |
52 // 0 is never a valid thread id. | 52 // 0 is never a valid thread id. |
53 static const pthread_t kNoThread = (pthread_t) 0; | 53 static const pthread_t kNoThread = (pthread_t) 0; |
54 | 54 |
55 | 55 |
56 uint64_t OS::CpuFeaturesImpliedByPlatform() { | 56 uint64_t OS::CpuFeaturesImpliedByPlatform() { |
57 #if V8_OS_MACOSX | 57 #if V8_OS_MACOSX |
58 // Mac OS X requires all these to install so we can assume they are present. | 58 // Mac OS X requires CMOV to install so we can assume it is present. |
59 // These constants are defined by the CPUid instructions. | 59 // These constants are defined by the CPUid instructions. |
60 const uint64_t one = 1; | 60 const uint64_t one = 1; |
61 return (one << SSE2) | (one << CMOV); | 61 return one << CMOV; |
62 #else | 62 #else |
63 return 0; // Nothing special about the other systems. | 63 return 0; // Nothing special about the other systems. |
64 #endif | 64 #endif |
65 } | 65 } |
66 | 66 |
67 | 67 |
68 // Maximum size of the virtual memory. 0 means there is no artificial | 68 // Maximum size of the virtual memory. 0 means there is no artificial |
69 // limit. | 69 // limit. |
70 | 70 |
71 intptr_t OS::MaxVirtualMemory() { | 71 intptr_t OS::MaxVirtualMemory() { |
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759 | 759 |
760 void Thread::SetThreadLocal(LocalStorageKey key, void* value) { | 760 void Thread::SetThreadLocal(LocalStorageKey key, void* value) { |
761 pthread_key_t pthread_key = LocalKeyToPthreadKey(key); | 761 pthread_key_t pthread_key = LocalKeyToPthreadKey(key); |
762 int result = pthread_setspecific(pthread_key, value); | 762 int result = pthread_setspecific(pthread_key, value); |
763 ASSERT_EQ(0, result); | 763 ASSERT_EQ(0, result); |
764 USE(result); | 764 USE(result); |
765 } | 765 } |
766 | 766 |
767 | 767 |
768 } } // namespace v8::internal | 768 } } // namespace v8::internal |
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