/******************************************************************************* * Copyright (c) 2020, 2021 IBM Corp. and Ian Craggs * * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v2.0 * and Eclipse Distribution License v1.0 which accompany this distribution. * * The Eclipse Public License is available at * https://www.eclipse.org/legal/epl-2.0/ * and the Eclipse Distribution License is available at * http://www.eclipse.org/org/documents/edl-v10.php. * * Contributors: * Ian Craggs - initial implementation *******************************************************************************/ #include "MQTTTime.h" #include "StackTrace.h" #if defined(_WIN32) || defined(_WIN64) #include #else #include #include #endif void MQTTTime_sleep(ELAPSED_TIME_TYPE milliseconds) { FUNC_ENTRY; #if defined(_WIN32) || defined(_WIN64) Sleep((DWORD)milliseconds); #else usleep((useconds_t)(milliseconds*1000)); #endif FUNC_EXIT; } #if defined(_WIN32) || defined(_WIN64) START_TIME_TYPE MQTTTime_start_clock(void) { #if WINVER >= _WIN32_WINNT_VISTA return GetTickCount64(); #else return GetTickCount(); #endif } #elif defined(AIX) START_TIME_TYPE MQTTTime_start_clock(void) { struct timespec start; clock_gettime(CLOCK_MONOTONIC, &start); return start; } #else START_TIME_TYPE MQTTTime_start_clock(void) { struct timeval start; struct timespec start_ts; clock_gettime(CLOCK_MONOTONIC, &start_ts); start.tv_sec = start_ts.tv_sec; start.tv_usec = start_ts.tv_nsec / 1000; return start; } #endif START_TIME_TYPE MQTTTime_now(void) { return MQTTTime_start_clock(); } #if defined(_WIN32) || defined(_WIN64) /* * @param t_new most recent time in milliseconds from GetTickCount() * @param t_old older time in milliseconds from GetTickCount() * @return difference in milliseconds */ DIFF_TIME_TYPE MQTTTime_difftime(START_TIME_TYPE t_new, START_TIME_TYPE t_old) { #if WINVER >= _WIN32_WINNT_VISTA return (DIFF_TIME_TYPE)(t_new - t_old); #else if (t_old < t_new) /* check for wrap around condition in GetTickCount */ return (DIFF_TIME_TYPE)(t_new - t_old); else return (DIFF_TIME_TYPE)((0xFFFFFFFFL - t_old) + 1 + t_new); #endif } #elif defined(AIX) #define assert(a) DIFF_TIME_TYPE MQTTTime_difftime(START_TIME_TYPE t_new, START_TIME_TYPE t_old) { struct timespec result; ntimersub(t_new, t_old, result); return (DIFF_TIME_TYPE)((result.tv_sec)*1000L + (result.tv_nsec)/1000000L); /* convert to milliseconds */ } #else DIFF_TIME_TYPE MQTTTime_difftime(START_TIME_TYPE t_new, START_TIME_TYPE t_old) { struct timeval result; timersub(&t_new, &t_old, &result); return (DIFF_TIME_TYPE)(((DIFF_TIME_TYPE)result.tv_sec)*1000 + ((DIFF_TIME_TYPE)result.tv_usec)/1000); /* convert to milliseconds */ } #endif ELAPSED_TIME_TYPE MQTTTime_elapsed(START_TIME_TYPE milliseconds) { return (ELAPSED_TIME_TYPE)MQTTTime_difftime(MQTTTime_now(), milliseconds); }