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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/globals.h" | 5 #include "vm/globals.h" |
6 #if defined(TARGET_OS_LINUX) | 6 #if defined(TARGET_OS_LINUX) |
7 | 7 |
8 #include "vm/os.h" | 8 #include "vm/os.h" |
9 | 9 |
10 #include <errno.h> // NOLINT | 10 #include <errno.h> // NOLINT |
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168 } | 168 } |
169 | 169 |
170 | 170 |
171 int64_t OS::GetCurrentMonotonicMicros() { | 171 int64_t OS::GetCurrentMonotonicMicros() { |
172 int64_t ticks = GetCurrentMonotonicTicks(); | 172 int64_t ticks = GetCurrentMonotonicTicks(); |
173 ASSERT(GetCurrentMonotonicFrequency() == kNanosecondsPerSecond); | 173 ASSERT(GetCurrentMonotonicFrequency() == kNanosecondsPerSecond); |
174 return ticks / kNanosecondsPerMicrosecond; | 174 return ticks / kNanosecondsPerMicrosecond; |
175 } | 175 } |
176 | 176 |
177 | 177 |
| 178 int64_t OS::GetCurrentThreadCPUMicros() { |
| 179 struct timespec ts; |
| 180 if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts) != 0) { |
| 181 UNREACHABLE(); |
| 182 return -1; |
| 183 } |
| 184 int64_t result = ts.tv_sec; |
| 185 result *= kMicrosecondsPerSecond; |
| 186 result += (ts.tv_nsec / kNanosecondsPerMicrosecond); |
| 187 return result; |
| 188 } |
| 189 |
| 190 |
178 void* OS::AlignedAllocate(intptr_t size, intptr_t alignment) { | 191 void* OS::AlignedAllocate(intptr_t size, intptr_t alignment) { |
179 const int kMinimumAlignment = 16; | 192 const int kMinimumAlignment = 16; |
180 ASSERT(Utils::IsPowerOfTwo(alignment)); | 193 ASSERT(Utils::IsPowerOfTwo(alignment)); |
181 ASSERT(alignment >= kMinimumAlignment); | 194 ASSERT(alignment >= kMinimumAlignment); |
182 void* p = memalign(alignment, size); | 195 void* p = memalign(alignment, size); |
183 if (p == NULL) { | 196 if (p == NULL) { |
184 UNREACHABLE(); | 197 UNREACHABLE(); |
185 } | 198 } |
186 return p; | 199 return p; |
187 } | 200 } |
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407 } | 420 } |
408 | 421 |
409 | 422 |
410 void OS::Exit(int code) { | 423 void OS::Exit(int code) { |
411 exit(code); | 424 exit(code); |
412 } | 425 } |
413 | 426 |
414 } // namespace dart | 427 } // namespace dart |
415 | 428 |
416 #endif // defined(TARGET_OS_LINUX) | 429 #endif // defined(TARGET_OS_LINUX) |
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