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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 Solaris 10 goes here. For the POSIX-compatible | 5 // Platform-specific code for Solaris 10 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 #ifdef __sparc | 8 #ifdef __sparc |
9 # error "V8 does not support the SPARC CPU architecture." | 9 # error "V8 does not support the SPARC CPU architecture." |
10 #endif | 10 #endif |
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147 | 147 |
148 VirtualMemory::VirtualMemory() : address_(NULL), size_(0) { } | 148 VirtualMemory::VirtualMemory() : address_(NULL), size_(0) { } |
149 | 149 |
150 | 150 |
151 VirtualMemory::VirtualMemory(size_t size) | 151 VirtualMemory::VirtualMemory(size_t size) |
152 : address_(ReserveRegion(size)), size_(size) { } | 152 : address_(ReserveRegion(size)), size_(size) { } |
153 | 153 |
154 | 154 |
155 VirtualMemory::VirtualMemory(size_t size, size_t alignment) | 155 VirtualMemory::VirtualMemory(size_t size, size_t alignment) |
156 : address_(NULL), size_(0) { | 156 : address_(NULL), size_(0) { |
157 DCHECK(IsAligned(alignment, static_cast<intptr_t>(OS::AllocateAlignment()))); | 157 DCHECK((alignment % OS::AllocateAlignment()) == 0); |
158 size_t request_size = RoundUp(size + alignment, | 158 size_t request_size = RoundUp(size + alignment, |
159 static_cast<intptr_t>(OS::AllocateAlignment())); | 159 static_cast<intptr_t>(OS::AllocateAlignment())); |
160 void* reservation = mmap(OS::GetRandomMmapAddr(), | 160 void* reservation = mmap(OS::GetRandomMmapAddr(), |
161 request_size, | 161 request_size, |
162 PROT_NONE, | 162 PROT_NONE, |
163 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, | 163 MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, |
164 kMmapFd, | 164 kMmapFd, |
165 kMmapFdOffset); | 165 kMmapFdOffset); |
166 if (reservation == MAP_FAILED) return; | 166 if (reservation == MAP_FAILED) return; |
167 | 167 |
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270 return munmap(base, size) == 0; | 270 return munmap(base, size) == 0; |
271 } | 271 } |
272 | 272 |
273 | 273 |
274 bool VirtualMemory::HasLazyCommits() { | 274 bool VirtualMemory::HasLazyCommits() { |
275 // TODO(alph): implement for the platform. | 275 // TODO(alph): implement for the platform. |
276 return false; | 276 return false; |
277 } | 277 } |
278 | 278 |
279 } } // namespace v8::base | 279 } } // namespace v8::base |
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