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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 // This module contains the platform-specific code. This make the rest of the | 5 // This module contains the platform-specific code. This make the rest of the |
6 // code less dependent on operating system, compilers and runtime libraries. | 6 // code less dependent on operating system, compilers and runtime libraries. |
7 // This module does specifically not deal with differences between different | 7 // This module does specifically not deal with differences between different |
8 // processor architecture. | 8 // processor architecture. |
9 // The platform classes have the same definition for all platforms. The | 9 // The platform classes have the same definition for all platforms. The |
10 // implementation for a particular platform is put in platform_<os>.cc. | 10 // implementation for a particular platform is put in platform_<os>.cc. |
11 // The build system then uses the implementation for the target platform. | 11 // The build system then uses the implementation for the target platform. |
12 // | 12 // |
13 // This design has been chosen because it is simple and fast. Alternatively, | 13 // This design has been chosen because it is simple and fast. Alternatively, |
14 // the platform dependent classes could have been implemented using abstract | 14 // the platform dependent classes could have been implemented using abstract |
15 // superclasses with virtual methods and having specializations for each | 15 // superclasses with virtual methods and having specializations for each |
16 // platform. This design was rejected because it was more complicated and | 16 // platform. This design was rejected because it was more complicated and |
17 // slower. It would require factory methods for selecting the right | 17 // slower. It would require factory methods for selecting the right |
18 // implementation and the overhead of virtual methods for performance | 18 // implementation and the overhead of virtual methods for performance |
19 // sensitive like mutex locking/unlocking. | 19 // sensitive like mutex locking/unlocking. |
20 | 20 |
21 #ifndef V8_PLATFORM_H_ | 21 #ifndef V8_PLATFORM_H_ |
22 #define V8_PLATFORM_H_ | 22 #define V8_PLATFORM_H_ |
23 | 23 |
24 #include <stdarg.h> | 24 #include <stdarg.h> |
| 25 #include <string> |
| 26 #include <vector> |
25 | 27 |
26 #include "src/base/build_config.h" | 28 #include "src/base/build_config.h" |
27 #include "src/platform/mutex.h" | 29 #include "src/platform/mutex.h" |
28 #include "src/platform/semaphore.h" | 30 #include "src/platform/semaphore.h" |
29 #include "src/vector.h" | 31 #include "src/vector.h" |
30 | 32 |
31 #ifdef __sun | 33 #ifdef __sun |
32 # ifndef signbit | 34 # ifndef signbit |
33 namespace std { | 35 namespace std { |
34 int signbit(double x); | 36 int signbit(double x); |
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248 static int SNPrintF(Vector<char> str, const char* format, ...); | 250 static int SNPrintF(Vector<char> str, const char* format, ...); |
249 static int VSNPrintF(Vector<char> str, | 251 static int VSNPrintF(Vector<char> str, |
250 const char* format, | 252 const char* format, |
251 va_list args); | 253 va_list args); |
252 | 254 |
253 static char* StrChr(char* str, int c); | 255 static char* StrChr(char* str, int c); |
254 static void StrNCpy(Vector<char> dest, const char* src, size_t n); | 256 static void StrNCpy(Vector<char> dest, const char* src, size_t n); |
255 | 257 |
256 // Support for the profiler. Can do nothing, in which case ticks | 258 // Support for the profiler. Can do nothing, in which case ticks |
257 // occuring in shared libraries will not be properly accounted for. | 259 // occuring in shared libraries will not be properly accounted for. |
258 static void LogSharedLibraryAddresses(Isolate* isolate); | 260 struct SharedLibraryAddress { |
| 261 SharedLibraryAddress( |
| 262 const std::string& library_path, uintptr_t start, uintptr_t end) |
| 263 : library_path(library_path), start(start), end(end) {} |
| 264 |
| 265 std::string library_path; |
| 266 uintptr_t start; |
| 267 uintptr_t end; |
| 268 }; |
| 269 |
| 270 static std::vector<SharedLibraryAddress> GetSharedLibraryAddresses(); |
259 | 271 |
260 // Support for the profiler. Notifies the external profiling | 272 // Support for the profiler. Notifies the external profiling |
261 // process that a code moving garbage collection starts. Can do | 273 // process that a code moving garbage collection starts. Can do |
262 // nothing, in which case the code objects must not move (e.g., by | 274 // nothing, in which case the code objects must not move (e.g., by |
263 // using --never-compact) if accurate profiling is desired. | 275 // using --never-compact) if accurate profiling is desired. |
264 static void SignalCodeMovingGC(); | 276 static void SignalCodeMovingGC(); |
265 | 277 |
266 // Returns the number of processors online. | 278 // Returns the number of processors online. |
267 static int NumberOfProcessorsOnline(); | 279 static int NumberOfProcessorsOnline(); |
268 | 280 |
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496 char name_[kMaxThreadNameLength]; | 508 char name_[kMaxThreadNameLength]; |
497 int stack_size_; | 509 int stack_size_; |
498 Semaphore* start_semaphore_; | 510 Semaphore* start_semaphore_; |
499 | 511 |
500 DISALLOW_COPY_AND_ASSIGN(Thread); | 512 DISALLOW_COPY_AND_ASSIGN(Thread); |
501 }; | 513 }; |
502 | 514 |
503 } } // namespace v8::internal | 515 } } // namespace v8::internal |
504 | 516 |
505 #endif // V8_PLATFORM_H_ | 517 #endif // V8_PLATFORM_H_ |
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