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author
kolban
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Thu Jan 19 21:51:14 CST 2017
1 parent a4db3b1 commit 848587e

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‎c-utils/c_timeutils.c

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/*
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* c_timeutils.c
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*
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* Created on: Nov 26, 2016
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* Author: kolban
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*/
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#include <sys/time.h>
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#include <stdint.h>
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#include <stdio.h>
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/**
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* Add a number of milliseconds to a timeval and replace the
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* existing timeval with the new value.
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*/
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void timeval_addMsecs(struct timeval *a, uint32_t msecs) {
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int uSecs = (msecs%1000) * 1000 + a->tv_usec;
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a->tv_usec = uSecs % 1000000;
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a->tv_sec += msecs/1000 + uSecs/1000000;
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} // addMsecs
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/**
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* Convert a timeval into the number of msecs.
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*/
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uint32_t timeval_toMsecs(struct timeval *a) {
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return a->tv_sec * 1000 + a->tv_usec/1000;
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} // timeval_toMsecs
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/**
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* Subtract one timeval from another.
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*/
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struct timeval timeval_sub(struct timeval *a, struct timeval *b) {
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struct timeval result;
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result.tv_sec = a->tv_sec - b->tv_sec;
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result.tv_usec = a->tv_usec - b->tv_usec;
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if (a->tv_usec < b->tv_usec) {
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result.tv_sec -= 1;
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result.tv_usec += 1000000;
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}
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return result;
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} // timeval_sub
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/*
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* Add one timeval to another.
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*/
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struct timeval timeval_add(struct timeval *a, struct timeval *b) {
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struct timeval result;
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result.tv_sec = a->tv_sec + b->tv_sec;
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result.tv_usec = a->tv_usec + b->tv_usec;
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if (result.tv_usec >= 1000000) {
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result.tv_sec += 1;
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result.tv_usec -= 1000000;
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}
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return result;
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} // timeval_add
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/**
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* Return the number of milliseconds until future time value.
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*/
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uint32_t timeval_durationFromNow(struct timeval *a) {
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struct timeval b;
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gettimeofday(&b, NULL);
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struct timeval delta = timeval_sub(a, &b);
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if (delta.tv_sec < 0) {
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return 0;
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}
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return timeval_toMsecs(&delta);
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// assuming that a is later than b, then the result is a-b
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} // timeval_durationFromNow
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/**
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* Return the number of milliseconds the historic time value was before now.
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*/
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uint32_t timeval_durationBeforeNow(struct timeval *a) {
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struct timeval b;
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gettimeofday(&b, NULL);
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struct timeval delta = timeval_sub(&b, a);
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if (delta.tv_sec < 0) {
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return 0;
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}
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return timeval_toMsecs(&delta);
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} // timeval_durationBeforeNow

‎c-utils/c_timeutils.h

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/*
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* c_timeutils.h
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*
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* Created on: Nov 26, 2016
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* Author: kolban
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*/
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#if !defined(_C_TIMEUTILS_H_)
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#define _C_TIMEUTILS_H_
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#include <sys/time.h>
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#include <stdint.h>
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struct timeval timeval_add(struct timeval *a, struct timeval *b);
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void timeval_addMsecs(struct timeval *a, uint32_t msecs);
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uint32_t timeval_durationBeforeNow(struct timeval *a);
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uint32_t timeval_durationFromNow(struct timeval *a);
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struct timeval timeval_sub(struct timeval *a, struct timeval *b);
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uint32_t timeval_toMsecs(struct timeval *a);
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#endif /* _C_TIMEUTILS_H_ */

‎networking/mqtt/paho_mqtt_embedded_c/.cproject

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‎networking/mqtt/paho_mqtt_embedded_c/.project

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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>embedded-C</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.genmakebuilder</name>
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<triggers>clean,full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.cdt.managedbuilder.core.ScannerConfigBuilder</name>
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<triggers>full,incremental,</triggers>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.cdt.core.cnature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
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<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
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</natures>
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</projectDescription>

‎networking/mqtt/paho_mqtt_embedded_c/.settings/org.eclipse.cdt.core.prefs

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‎networking/mqtt/paho_mqtt_embedded_c/.settings/org.eclipse.cdt.ui.prefs

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eclipse.preferences.version=1
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formatter_profile=org.eclipse.cdt.ui.default.allman_profile
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formatter_settings_version=1

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