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