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67 lines
2.0 KiB
67 lines
2.0 KiB
/* |
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* Copyright (C) 2005 The Android Open Source Project |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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// |
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// Timer functions. |
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// |
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#include <utils/Timers.h> |
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#include <limits.h> |
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#include <time.h> |
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#if defined(__ANDROID__) |
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nsecs_t systemTime(int clock) |
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{ |
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static const clockid_t clocks[] = { |
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CLOCK_REALTIME, |
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CLOCK_MONOTONIC, |
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CLOCK_PROCESS_CPUTIME_ID, |
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CLOCK_THREAD_CPUTIME_ID, |
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CLOCK_BOOTTIME |
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}; |
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struct timespec t; |
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t.tv_sec = t.tv_nsec = 0; |
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clock_gettime(clocks[clock], &t); |
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return nsecs_t(t.tv_sec)*1000000000LL + t.tv_nsec; |
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} |
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#else |
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nsecs_t systemTime(int /*clock*/) |
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{ |
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// Clock support varies widely across hosts. Mac OS doesn't support |
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// posix clocks, older glibcs don't support CLOCK_BOOTTIME and Windows |
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// is windows. |
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struct timeval t; |
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t.tv_sec = t.tv_usec = 0; |
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gettimeofday(&t, NULL); |
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return nsecs_t(t.tv_sec)*1000000000LL + nsecs_t(t.tv_usec)*1000LL; |
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} |
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#endif |
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int toMillisecondTimeoutDelay(nsecs_t referenceTime, nsecs_t timeoutTime) |
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{ |
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nsecs_t timeoutDelayMillis; |
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if (timeoutTime > referenceTime) { |
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uint64_t timeoutDelay = uint64_t(timeoutTime - referenceTime); |
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if (timeoutDelay > uint64_t((INT_MAX - 1) * 1000000LL)) { |
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timeoutDelayMillis = -1; |
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} else { |
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timeoutDelayMillis = (timeoutDelay + 999999LL) / 1000000LL; |
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} |
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} else { |
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timeoutDelayMillis = 0; |
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} |
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return (int)timeoutDelayMillis; |
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}
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