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Issue 544043002: Next base/macros.h cleanup step. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 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 // 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 Linux goes here. For the POSIX-compatible 5 // Platform-specific code for Linux goes here. For the POSIX-compatible
6 // parts, the implementation is in platform-posix.cc. 6 // parts, the implementation is in platform-posix.cc.
7 7
8 #include <pthread.h> 8 #include <pthread.h>
9 #include <semaphore.h> 9 #include <semaphore.h>
10 #include <signal.h> 10 #include <signal.h>
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299 299
300 VirtualMemory::VirtualMemory() : address_(NULL), size_(0) { } 300 VirtualMemory::VirtualMemory() : address_(NULL), size_(0) { }
301 301
302 302
303 VirtualMemory::VirtualMemory(size_t size) 303 VirtualMemory::VirtualMemory(size_t size)
304 : address_(ReserveRegion(size)), size_(size) { } 304 : address_(ReserveRegion(size)), size_(size) { }
305 305
306 306
307 VirtualMemory::VirtualMemory(size_t size, size_t alignment) 307 VirtualMemory::VirtualMemory(size_t size, size_t alignment)
308 : address_(NULL), size_(0) { 308 : address_(NULL), size_(0) {
309 DCHECK(IsAligned(alignment, static_cast<intptr_t>(OS::AllocateAlignment()))); 309 DCHECK((alignment % OS::AllocateAlignment()) == 0);
310 size_t request_size = RoundUp(size + alignment, 310 size_t request_size = RoundUp(size + alignment,
311 static_cast<intptr_t>(OS::AllocateAlignment())); 311 static_cast<intptr_t>(OS::AllocateAlignment()));
312 void* reservation = mmap(OS::GetRandomMmapAddr(), 312 void* reservation = mmap(OS::GetRandomMmapAddr(),
313 request_size, 313 request_size,
314 PROT_NONE, 314 PROT_NONE,
315 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, 315 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE,
316 kMmapFd, 316 kMmapFd,
317 kMmapFdOffset); 317 kMmapFdOffset);
318 if (reservation == MAP_FAILED) return; 318 if (reservation == MAP_FAILED) return;
319 319
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437 #endif 437 #endif
438 return munmap(base, size) == 0; 438 return munmap(base, size) == 0;
439 } 439 }
440 440
441 441
442 bool VirtualMemory::HasLazyCommits() { 442 bool VirtualMemory::HasLazyCommits() {
443 return true; 443 return true;
444 } 444 }
445 445
446 } } // namespace v8::base 446 } } // namespace v8::base
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