11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes * Copyright (C) 2013 The Android Open Source Project 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * All rights reserved. 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions of source code must retain the above copyright 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * the documentation and/or other materials provided with the 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * distribution. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 2911952073af22568bba0b661f7a9d4402c443a888Elliott Hughes#include "private/bionic_time_conversions.h" 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 3104303f5a8ab9a992f3671d46b6ee2171582cbd61Elliott Hughes#include "private/bionic_constants.h" 3204303f5a8ab9a992f3671d46b6ee2171582cbd61Elliott Hughes 3311952073af22568bba0b661f7a9d4402c443a888Elliott Hughesbool timespec_from_timeval(timespec& ts, const timeval& tv) { 3411952073af22568bba0b661f7a9d4402c443a888Elliott Hughes // Whole seconds can just be copied. 3511952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ts.tv_sec = tv.tv_sec; 361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 3711952073af22568bba0b661f7a9d4402c443a888Elliott Hughes // But we might overflow when converting microseconds to nanoseconds. 3811952073af22568bba0b661f7a9d4402c443a888Elliott Hughes if (tv.tv_usec >= 1000000 || tv.tv_usec < 0) { 3911952073af22568bba0b661f7a9d4402c443a888Elliott Hughes return false; 4011952073af22568bba0b661f7a9d4402c443a888Elliott Hughes } 4111952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ts.tv_nsec = tv.tv_usec * 1000; 4211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes return true; 4311952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 4511952073af22568bba0b661f7a9d4402c443a888Elliott Hughesvoid timespec_from_ms(timespec& ts, const int ms) { 4611952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ts.tv_sec = ms / 1000; 4711952073af22568bba0b661f7a9d4402c443a888Elliott Hughes ts.tv_nsec = (ms % 1000) * 1000000; 4811952073af22568bba0b661f7a9d4402c443a888Elliott Hughes} 491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 5011952073af22568bba0b661f7a9d4402c443a888Elliott Hughesvoid timeval_from_timespec(timeval& tv, const timespec& ts) { 5111952073af22568bba0b661f7a9d4402c443a888Elliott Hughes tv.tv_sec = ts.tv_sec; 5211952073af22568bba0b661f7a9d4402c443a888Elliott Hughes tv.tv_usec = ts.tv_nsec / 1000; 531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 54ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry 55ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherryvoid monotonic_time_from_realtime_time(timespec& monotonic_time, const timespec& realtime_time) { 56ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time = realtime_time; 57ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry 58ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry timespec cur_monotonic_time; 59ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry clock_gettime(CLOCK_MONOTONIC, &cur_monotonic_time); 60ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry timespec cur_realtime_time; 61ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry clock_gettime(CLOCK_REALTIME, &cur_realtime_time); 62ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry 63ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_nsec -= cur_realtime_time.tv_nsec; 64ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_nsec += cur_monotonic_time.tv_nsec; 65ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry if (monotonic_time.tv_nsec >= NS_PER_S) { 66ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_nsec -= NS_PER_S; 67ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_sec += 1; 68ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry } else if (monotonic_time.tv_nsec < 0) { 69ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_nsec += NS_PER_S; 70ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_sec -= 1; 71ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry } 72ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_sec -= cur_realtime_time.tv_sec; 73ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry monotonic_time.tv_sec += cur_monotonic_time.tv_sec; 74ac49cedc7e2bab2073a0895ef01e31dac84f590bTom Cherry} 75