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Issue 2245703002: Solaris/OpenBSD/FreeBSD: [heap] Uncommit unused large object page memory. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 4 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 FreeBSD goes here. For the POSIX-compatible 5 // Platform-specific code for FreeBSD 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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239 239
240 bool VirtualMemory::UncommitRegion(void* base, size_t size) { 240 bool VirtualMemory::UncommitRegion(void* base, size_t size) {
241 return mmap(base, 241 return mmap(base,
242 size, 242 size,
243 PROT_NONE, 243 PROT_NONE,
244 MAP_PRIVATE | MAP_ANON | MAP_FIXED, 244 MAP_PRIVATE | MAP_ANON | MAP_FIXED,
245 kMmapFd, 245 kMmapFd,
246 kMmapFdOffset) != MAP_FAILED; 246 kMmapFdOffset) != MAP_FAILED;
247 } 247 }
248 248
249 bool VirtualMemory::ReleasePartialRegion(void* base, size_t size,
250 void* free_start, size_t free_size) {
251 return munmap(free_start, free_size) == 0;
252 }
249 253
250 bool VirtualMemory::ReleaseRegion(void* base, size_t size) { 254 bool VirtualMemory::ReleaseRegion(void* base, size_t size) {
251 return munmap(base, size) == 0; 255 return munmap(base, size) == 0;
252 } 256 }
253 257
254 258
255 bool VirtualMemory::HasLazyCommits() { 259 bool VirtualMemory::HasLazyCommits() {
256 // TODO(alph): implement for the platform. 260 // TODO(alph): implement for the platform.
257 return false; 261 return false;
258 } 262 }
259 263
260 } // namespace base 264 } // namespace base
261 } // namespace v8 265 } // namespace v8
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