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Side by Side Diff: src/platform-posix.cc

Issue 316133002: Move atomic ops and related files to base library (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: updates Created 6 years, 6 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 // 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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38 #if defined(ANDROID) && !defined(V8_ANDROID_LOG_STDOUT) 38 #if defined(ANDROID) && !defined(V8_ANDROID_LOG_STDOUT)
39 #define LOG_TAG "v8" 39 #define LOG_TAG "v8"
40 #include <android/log.h> 40 #include <android/log.h>
41 #endif 41 #endif
42 42
43 #include "src/v8.h" 43 #include "src/v8.h"
44 44
45 #include "src/isolate-inl.h" 45 #include "src/isolate-inl.h"
46 #include "src/platform.h" 46 #include "src/platform.h"
47 47
48 #ifdef V8_FAST_TLS_SUPPORTED
49 #include "src/base/atomicops.h"
50 #endif
51
48 namespace v8 { 52 namespace v8 {
49 namespace internal { 53 namespace internal {
50 54
51 // 0 is never a valid thread id. 55 // 0 is never a valid thread id.
52 static const pthread_t kNoThread = (pthread_t) 0; 56 static const pthread_t kNoThread = (pthread_t) 0;
53 57
54 58
55 unsigned OS::CpuFeaturesImpliedByPlatform() { 59 unsigned OS::CpuFeaturesImpliedByPlatform() {
56 return 0; // Nothing special. 60 return 0; // Nothing special.
57 } 61 }
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592 intptr_t ptr_key = static_cast<intptr_t>(local_key); 596 intptr_t ptr_key = static_cast<intptr_t>(local_key);
593 return reinterpret_cast<pthread_key_t>(ptr_key); 597 return reinterpret_cast<pthread_key_t>(ptr_key);
594 #else 598 #else
595 return static_cast<pthread_key_t>(local_key); 599 return static_cast<pthread_key_t>(local_key);
596 #endif 600 #endif
597 } 601 }
598 602
599 603
600 #ifdef V8_FAST_TLS_SUPPORTED 604 #ifdef V8_FAST_TLS_SUPPORTED
601 605
602 static Atomic32 tls_base_offset_initialized = 0; 606 static base::Atomic32 tls_base_offset_initialized = 0;
603 intptr_t kMacTlsBaseOffset = 0; 607 intptr_t kMacTlsBaseOffset = 0;
604 608
605 // It's safe to do the initialization more that once, but it has to be 609 // It's safe to do the initialization more that once, but it has to be
606 // done at least once. 610 // done at least once.
607 static void InitializeTlsBaseOffset() { 611 static void InitializeTlsBaseOffset() {
608 const size_t kBufferSize = 128; 612 const size_t kBufferSize = 128;
609 char buffer[kBufferSize]; 613 char buffer[kBufferSize];
610 size_t buffer_size = kBufferSize; 614 size_t buffer_size = kBufferSize;
611 int ctl_name[] = { CTL_KERN , KERN_OSRELEASE }; 615 int ctl_name[] = { CTL_KERN , KERN_OSRELEASE };
612 if (sysctl(ctl_name, 2, buffer, &buffer_size, NULL, 0) != 0) { 616 if (sysctl(ctl_name, 2, buffer, &buffer_size, NULL, 0) != 0) {
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628 #if V8_HOST_ARCH_IA32 632 #if V8_HOST_ARCH_IA32
629 kMacTlsBaseOffset = 0x48; 633 kMacTlsBaseOffset = 0x48;
630 #else 634 #else
631 kMacTlsBaseOffset = 0x60; 635 kMacTlsBaseOffset = 0x60;
632 #endif 636 #endif
633 } else { 637 } else {
634 // 11.x.x (Lion) changed the offset. 638 // 11.x.x (Lion) changed the offset.
635 kMacTlsBaseOffset = 0; 639 kMacTlsBaseOffset = 0;
636 } 640 }
637 641
638 Release_Store(&tls_base_offset_initialized, 1); 642 base::Release_Store(&tls_base_offset_initialized, 1);
639 } 643 }
640 644
641 645
642 static void CheckFastTls(Thread::LocalStorageKey key) { 646 static void CheckFastTls(Thread::LocalStorageKey key) {
643 void* expected = reinterpret_cast<void*>(0x1234CAFE); 647 void* expected = reinterpret_cast<void*>(0x1234CAFE);
644 Thread::SetThreadLocal(key, expected); 648 Thread::SetThreadLocal(key, expected);
645 void* actual = Thread::GetExistingThreadLocal(key); 649 void* actual = Thread::GetExistingThreadLocal(key);
646 if (expected != actual) { 650 if (expected != actual) {
647 V8_Fatal(__FILE__, __LINE__, 651 V8_Fatal(__FILE__, __LINE__,
648 "V8 failed to initialize fast TLS on current kernel"); 652 "V8 failed to initialize fast TLS on current kernel");
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690 694
691 void Thread::SetThreadLocal(LocalStorageKey key, void* value) { 695 void Thread::SetThreadLocal(LocalStorageKey key, void* value) {
692 pthread_key_t pthread_key = LocalKeyToPthreadKey(key); 696 pthread_key_t pthread_key = LocalKeyToPthreadKey(key);
693 int result = pthread_setspecific(pthread_key, value); 697 int result = pthread_setspecific(pthread_key, value);
694 ASSERT_EQ(0, result); 698 ASSERT_EQ(0, result);
695 USE(result); 699 USE(result);
696 } 700 }
697 701
698 702
699 } } // namespace v8::internal 703 } } // namespace v8::internal
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