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