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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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152 // runtime system. | 152 // runtime system. |
153 return 8; | 153 return 8; |
154 #else | 154 #else |
155 // With gcc 4.4 the tree vectorization optimiser can generate code | 155 // With gcc 4.4 the tree vectorization optimiser can generate code |
156 // that requires 16 byte alignment such as movdqa on x86. | 156 // that requires 16 byte alignment such as movdqa on x86. |
157 return 16; | 157 return 16; |
158 #endif | 158 #endif |
159 } | 159 } |
160 | 160 |
161 | 161 |
| 162 const char* OS::LocalTimezone(double time) { |
| 163 if (isnan(time)) return ""; |
| 164 time_t tv = static_cast<time_t>(floor(time/msPerSecond)); |
| 165 struct tm* t = localtime(&tv); |
| 166 if (NULL == t) return ""; |
| 167 return t->tm_zone; |
| 168 } |
| 169 |
| 170 |
| 171 double OS::LocalTimeOffset() { |
| 172 time_t tv = time(NULL); |
| 173 struct tm* t = localtime(&tv); |
| 174 // tm_gmtoff includes any daylight savings offset, so subtract it. |
| 175 return static_cast<double>(t->tm_gmtoff * msPerSecond - |
| 176 (t->tm_isdst > 0 ? 3600 * msPerSecond : 0)); |
| 177 } |
| 178 |
| 179 |
162 // We keep the lowest and highest addresses mapped as a quick way of | 180 // We keep the lowest and highest addresses mapped as a quick way of |
163 // determining that pointers are outside the heap (used mostly in assertions | 181 // determining that pointers are outside the heap (used mostly in assertions |
164 // and verification). The estimate is conservative, ie, not all addresses in | 182 // and verification). The estimate is conservative, ie, not all addresses in |
165 // 'allocated' space are actually allocated to our heap. The range is | 183 // 'allocated' space are actually allocated to our heap. The range is |
166 // [lowest, highest), inclusive on the low and and exclusive on the high end. | 184 // [lowest, highest), inclusive on the low and and exclusive on the high end. |
167 static void* lowest_ever_allocated = reinterpret_cast<void*>(-1); | 185 static void* lowest_ever_allocated = reinterpret_cast<void*>(-1); |
168 static void* highest_ever_allocated = reinterpret_cast<void*>(0); | 186 static void* highest_ever_allocated = reinterpret_cast<void*>(0); |
169 | 187 |
170 | 188 |
171 static void UpdateAllocatedSpaceLimits(void* address, int size) { | 189 static void UpdateAllocatedSpaceLimits(void* address, int size) { |
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799 | 817 |
800 // This sampler is no longer the active sampler. | 818 // This sampler is no longer the active sampler. |
801 active_sampler_ = NULL; | 819 active_sampler_ = NULL; |
802 active_ = false; | 820 active_ = false; |
803 } | 821 } |
804 | 822 |
805 | 823 |
806 #endif // ENABLE_LOGGING_AND_PROFILING | 824 #endif // ENABLE_LOGGING_AND_PROFILING |
807 | 825 |
808 } } // namespace v8::internal | 826 } } // namespace v8::internal |
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