1*8617a60dSAndroid Build Coastguard Worker /* Copyright 2010 The ChromiumOS Authors 2*8617a60dSAndroid Build Coastguard Worker * Use of this source code is governed by a BSD-style license that can be 3*8617a60dSAndroid Build Coastguard Worker * found in the LICENSE file. 4*8617a60dSAndroid Build Coastguard Worker */ 5*8617a60dSAndroid Build Coastguard Worker 6*8617a60dSAndroid Build Coastguard Worker #include "timer_utils.h" 7*8617a60dSAndroid Build Coastguard Worker StartTimer(ClockTimerState * ct)8*8617a60dSAndroid Build Coastguard Workervoid StartTimer(ClockTimerState* ct) { 9*8617a60dSAndroid Build Coastguard Worker clock_gettime(CLOCK_REALTIME, &ct->start_time); 10*8617a60dSAndroid Build Coastguard Worker } 11*8617a60dSAndroid Build Coastguard Worker StopTimer(ClockTimerState * ct)12*8617a60dSAndroid Build Coastguard Workervoid StopTimer(ClockTimerState* ct) { 13*8617a60dSAndroid Build Coastguard Worker clock_gettime(CLOCK_REALTIME, &ct->end_time); 14*8617a60dSAndroid Build Coastguard Worker } 15*8617a60dSAndroid Build Coastguard Worker GetDurationMsecs(ClockTimerState * ct)16*8617a60dSAndroid Build Coastguard Workeruint32_t GetDurationMsecs(ClockTimerState* ct) { 17*8617a60dSAndroid Build Coastguard Worker uint64_t start = ((uint64_t) ct->start_time.tv_sec * 1000000000 + 18*8617a60dSAndroid Build Coastguard Worker (uint64_t) ct->start_time.tv_nsec); 19*8617a60dSAndroid Build Coastguard Worker uint64_t end = ((uint64_t) ct->end_time.tv_sec * 1000000000 + 20*8617a60dSAndroid Build Coastguard Worker (uint64_t) ct->end_time.tv_nsec); 21*8617a60dSAndroid Build Coastguard Worker uint64_t duration_msecs = (end - start) / 1000000U; /* Nanoseconds -> 22*8617a60dSAndroid Build Coastguard Worker * Milliseconds. */ 23*8617a60dSAndroid Build Coastguard Worker return (uint32_t) duration_msecs; 24*8617a60dSAndroid Build Coastguard Worker } 25