OLD | NEW |
1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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 |
(...skipping 154 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
165 static void VPrintError(const char* format, va_list args); | 165 static void VPrintError(const char* format, va_list args); |
166 | 166 |
167 // Allocate/Free memory used by JS heap. Pages are readable/writable, but | 167 // Allocate/Free memory used by JS heap. Pages are readable/writable, but |
168 // they are not guaranteed to be executable unless 'executable' is true. | 168 // they are not guaranteed to be executable unless 'executable' is true. |
169 // Returns the address of allocated memory, or NULL if failed. | 169 // Returns the address of allocated memory, or NULL if failed. |
170 static void* Allocate(const size_t requested, | 170 static void* Allocate(const size_t requested, |
171 size_t* allocated, | 171 size_t* allocated, |
172 bool is_executable); | 172 bool is_executable); |
173 static void Free(void* address, const size_t size); | 173 static void Free(void* address, const size_t size); |
174 | 174 |
| 175 // This is the granularity at which the ProtectCode(...) call can set page |
| 176 // permissions. |
| 177 static intptr_t CommitPageSize(); |
| 178 |
175 // Mark code segments non-writable. | 179 // Mark code segments non-writable. |
176 static void ProtectCode(void* address, const size_t size); | 180 static void ProtectCode(void* address, const size_t size); |
177 | 181 |
178 // Assign memory as a guard page so that access will cause an exception. | 182 // Assign memory as a guard page so that access will cause an exception. |
179 static void Guard(void* address, const size_t size); | 183 static void Guard(void* address, const size_t size); |
180 | 184 |
181 // Generate a random address to be used for hinting mmap(). | 185 // Generate a random address to be used for hinting mmap(). |
182 static void* GetRandomMmapAddr(); | 186 static void* GetRandomMmapAddr(); |
183 | 187 |
184 // Get the Alignment guaranteed by Allocate(). | 188 // Get the Alignment guaranteed by Allocate(). |
(...skipping 499 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
684 Atomic32 active_; | 688 Atomic32 active_; |
685 PlatformData* data_; // Platform specific data. | 689 PlatformData* data_; // Platform specific data. |
686 int samples_taken_; // Counts stack samples taken. | 690 int samples_taken_; // Counts stack samples taken. |
687 DISALLOW_IMPLICIT_CONSTRUCTORS(Sampler); | 691 DISALLOW_IMPLICIT_CONSTRUCTORS(Sampler); |
688 }; | 692 }; |
689 | 693 |
690 | 694 |
691 } } // namespace v8::internal | 695 } } // namespace v8::internal |
692 | 696 |
693 #endif // V8_PLATFORM_H_ | 697 #endif // V8_PLATFORM_H_ |
OLD | NEW |