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Issue 20014005: Fix duplicated methods for POSIX platforms. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 7 years, 5 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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81 81
82 82
83 double ceiling(double x) { 83 double ceiling(double x) {
84 return ceil(x); 84 return ceil(x);
85 } 85 }
86 86
87 87
88 static Mutex* limit_mutex = NULL; 88 static Mutex* limit_mutex = NULL;
89 89
90 90
91 void OS::PostSetUp() {
92 POSIXPostSetUp();
93 }
94
95
96 uint64_t OS::CpuFeaturesImpliedByPlatform() { 91 uint64_t OS::CpuFeaturesImpliedByPlatform() {
97 return 0; // Linux runs on anything. 92 return 0; // Linux runs on anything.
98 } 93 }
99 94
100 95
101 #ifdef __arm__ 96 #ifdef __arm__
102 static bool CPUInfoContainsString(const char * search_string) { 97 static bool CPUInfoContainsString(const char * search_string) {
103 const char* file_name = "/proc/cpuinfo"; 98 const char* file_name = "/proc/cpuinfo";
104 // This is written as a straight shot one pass parser 99 // This is written as a straight shot one pass parser
105 // and not using STL string and ifstream because, 100 // and not using STL string and ifstream because,
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377 Max(highest_ever_allocated, 372 Max(highest_ever_allocated,
378 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size)); 373 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size));
379 } 374 }
380 375
381 376
382 bool OS::IsOutsideAllocatedSpace(void* address) { 377 bool OS::IsOutsideAllocatedSpace(void* address) {
383 return address < lowest_ever_allocated || address >= highest_ever_allocated; 378 return address < lowest_ever_allocated || address >= highest_ever_allocated;
384 } 379 }
385 380
386 381
387 size_t OS::AllocateAlignment() {
388 return sysconf(_SC_PAGESIZE);
389 }
390
391
392 void* OS::Allocate(const size_t requested, 382 void* OS::Allocate(const size_t requested,
393 size_t* allocated, 383 size_t* allocated,
394 bool is_executable) { 384 bool is_executable) {
395 const size_t msize = RoundUp(requested, AllocateAlignment()); 385 const size_t msize = RoundUp(requested, AllocateAlignment());
396 int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0); 386 int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0);
397 void* addr = OS::GetRandomMmapAddr(); 387 void* addr = OS::GetRandomMmapAddr();
398 void* mbase = mmap(addr, msize, prot, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); 388 void* mbase = mmap(addr, msize, prot, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
399 if (mbase == MAP_FAILED) { 389 if (mbase == MAP_FAILED) {
400 LOG(i::Isolate::Current(), 390 LOG(i::Isolate::Current(),
401 StringEvent("OS::Allocate", "mmap failed")); 391 StringEvent("OS::Allocate", "mmap failed"));
402 return NULL; 392 return NULL;
403 } 393 }
404 *allocated = msize; 394 *allocated = msize;
405 UpdateAllocatedSpaceLimits(mbase, msize); 395 UpdateAllocatedSpaceLimits(mbase, msize);
406 return mbase; 396 return mbase;
407 } 397 }
408 398
409 399
410 void OS::Free(void* address, const size_t size) {
411 // TODO(1240712): munmap has a return value which is ignored here.
412 int result = munmap(address, size);
413 USE(result);
414 ASSERT(result == 0);
415 }
416
417
418 void OS::Sleep(int milliseconds) {
419 unsigned int ms = static_cast<unsigned int>(milliseconds);
420 usleep(1000 * ms);
421 }
422
423
424 int OS::NumberOfCores() {
425 return sysconf(_SC_NPROCESSORS_ONLN);
426 }
427
428
429 void OS::Abort() {
430 // Redirect to std abort to signal abnormal program termination.
431 if (FLAG_break_on_abort) {
432 DebugBreak();
433 }
434 abort();
435 }
436
437
438 void OS::DebugBreak() {
439 // TODO(lrn): Introduce processor define for runtime system (!= V8_ARCH_x,
440 // which is the architecture of generated code).
441 #if (defined(__arm__) || defined(__thumb__))
442 asm("bkpt 0");
443 #elif defined(__mips__)
444 asm("break");
445 #elif defined(__native_client__)
446 asm("hlt");
447 #else
448 asm("int $3");
449 #endif
450 }
451
452
453 void OS::DumpBacktrace() { 400 void OS::DumpBacktrace() {
454 // backtrace is a glibc extension. 401 // backtrace is a glibc extension.
455 #if defined(__GLIBC__) && !defined(__UCLIBC__) 402 #if defined(__GLIBC__) && !defined(__UCLIBC__)
456 POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace(); 403 POSIXBacktraceHelper<backtrace, backtrace_symbols>::DumpBacktrace();
457 #endif 404 #endif
458 } 405 }
459 406
460 407
461 class PosixMemoryMappedFile : public OS::MemoryMappedFile { 408 class PosixMemoryMappedFile : public OS::MemoryMappedFile {
462 public: 409 public:
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936 limit_mutex = CreateMutex(); 883 limit_mutex = CreateMutex();
937 } 884 }
938 885
939 886
940 void OS::TearDown() { 887 void OS::TearDown() {
941 delete limit_mutex; 888 delete limit_mutex;
942 } 889 }
943 890
944 891
945 } } // namespace v8::internal 892 } } // namespace v8::internal
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