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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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87 | 87 |
88 | 88 |
89 double ceiling(double x) { | 89 double ceiling(double x) { |
90 return ceil(x); | 90 return ceil(x); |
91 } | 91 } |
92 | 92 |
93 | 93 |
94 static Mutex* limit_mutex = NULL; | 94 static Mutex* limit_mutex = NULL; |
95 | 95 |
96 | 96 |
97 void OS::PostSetUp() { | |
98 POSIXPostSetUp(); | |
99 } | |
100 | |
101 | |
102 uint64_t OS::CpuFeaturesImpliedByPlatform() { | 97 uint64_t OS::CpuFeaturesImpliedByPlatform() { |
103 return 0; // Solaris runs on a lot of things. | 98 return 0; // Solaris runs on a lot of things. |
104 } | 99 } |
105 | 100 |
106 | 101 |
107 int OS::ActivationFrameAlignment() { | 102 int OS::ActivationFrameAlignment() { |
108 // GCC generates code that requires 16 byte alignment such as movdqa. | 103 // GCC generates code that requires 16 byte alignment such as movdqa. |
109 return Max(STACK_ALIGN, 16); | 104 return Max(STACK_ALIGN, 16); |
110 } | 105 } |
111 | 106 |
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143 Max(highest_ever_allocated, | 138 Max(highest_ever_allocated, |
144 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size)); | 139 reinterpret_cast<void*>(reinterpret_cast<char*>(address) + size)); |
145 } | 140 } |
146 | 141 |
147 | 142 |
148 bool OS::IsOutsideAllocatedSpace(void* address) { | 143 bool OS::IsOutsideAllocatedSpace(void* address) { |
149 return address < lowest_ever_allocated || address >= highest_ever_allocated; | 144 return address < lowest_ever_allocated || address >= highest_ever_allocated; |
150 } | 145 } |
151 | 146 |
152 | 147 |
153 size_t OS::AllocateAlignment() { | |
154 return static_cast<size_t>(getpagesize()); | |
155 } | |
156 | |
157 | |
158 void* OS::Allocate(const size_t requested, | 148 void* OS::Allocate(const size_t requested, |
159 size_t* allocated, | 149 size_t* allocated, |
160 bool is_executable) { | 150 bool is_executable) { |
161 const size_t msize = RoundUp(requested, getpagesize()); | 151 const size_t msize = RoundUp(requested, getpagesize()); |
162 int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0); | 152 int prot = PROT_READ | PROT_WRITE | (is_executable ? PROT_EXEC : 0); |
163 void* mbase = mmap(NULL, msize, prot, MAP_PRIVATE | MAP_ANON, -1, 0); | 153 void* mbase = mmap(NULL, msize, prot, MAP_PRIVATE | MAP_ANON, -1, 0); |
164 | 154 |
165 if (mbase == MAP_FAILED) { | 155 if (mbase == MAP_FAILED) { |
166 LOG(ISOLATE, StringEvent("OS::Allocate", "mmap failed")); | 156 LOG(ISOLATE, StringEvent("OS::Allocate", "mmap failed")); |
167 return NULL; | 157 return NULL; |
168 } | 158 } |
169 *allocated = msize; | 159 *allocated = msize; |
170 UpdateAllocatedSpaceLimits(mbase, msize); | 160 UpdateAllocatedSpaceLimits(mbase, msize); |
171 return mbase; | 161 return mbase; |
172 } | 162 } |
173 | 163 |
174 | 164 |
175 void OS::Free(void* address, const size_t size) { | |
176 // TODO(1240712): munmap has a return value which is ignored here. | |
177 int result = munmap(address, size); | |
178 USE(result); | |
179 ASSERT(result == 0); | |
180 } | |
181 | |
182 | |
183 void OS::Sleep(int milliseconds) { | |
184 useconds_t ms = static_cast<useconds_t>(milliseconds); | |
185 usleep(1000 * ms); | |
186 } | |
187 | |
188 | |
189 int OS::NumberOfCores() { | |
190 return sysconf(_SC_NPROCESSORS_ONLN); | |
191 } | |
192 | |
193 | |
194 void OS::Abort() { | |
195 // Redirect to std abort to signal abnormal program termination. | |
196 abort(); | |
197 } | |
198 | |
199 | |
200 void OS::DebugBreak() { | |
201 asm("int $3"); | |
202 } | |
203 | |
204 | |
205 void OS::DumpBacktrace() { | 165 void OS::DumpBacktrace() { |
206 // Currently unsupported. | 166 // Currently unsupported. |
207 } | 167 } |
208 | 168 |
209 | 169 |
210 class PosixMemoryMappedFile : public OS::MemoryMappedFile { | 170 class PosixMemoryMappedFile : public OS::MemoryMappedFile { |
211 public: | 171 public: |
212 PosixMemoryMappedFile(FILE* file, void* memory, int size) | 172 PosixMemoryMappedFile(FILE* file, void* memory, int size) |
213 : file_(file), memory_(memory), size_(size) { } | 173 : file_(file), memory_(memory), size_(size) { } |
214 virtual ~PosixMemoryMappedFile(); | 174 virtual ~PosixMemoryMappedFile(); |
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627 limit_mutex = CreateMutex(); | 587 limit_mutex = CreateMutex(); |
628 } | 588 } |
629 | 589 |
630 | 590 |
631 void OS::TearDown() { | 591 void OS::TearDown() { |
632 delete limit_mutex; | 592 delete limit_mutex; |
633 } | 593 } |
634 | 594 |
635 | 595 |
636 } } // namespace v8::internal | 596 } } // namespace v8::internal |
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