#include <stdio.h>#include <sys/types.h>#include <sys/socket.h>#include <netinet/in.h>#include <strings.h>#include <string.h>#include <arpa/inet.h>#include <stdlib.h>#include <unistd.h>#include <signal.h>#include <errno.h>#include <pthread.h>#include <time.h>#include <sys/time.h>#include "timer.h"Include dependency graph for timer.c:
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Defines | |
| #define | JITTER_MAX 1000 |
Functions | |
| long | jitter (long period) |
| int | delay_uS (int uS) |
| void * | periodic_thread (void *arg) |
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Definition at line 65 of file timer.c. References jitter(). Referenced by main(), and periodic_thread(). 00065 {
00066 struct timeval to;
00067 long time_error;
00068 to.tv_sec = 0;
00069 to.tv_usec = uS;
00070 select(0,NULL,NULL,NULL,&to);
00071 time_error=jitter((long)uS);
00072 if ((time_error>JITTER_MAX)||(time_error<-JITTER_MAX)) {
00073 printf("%ld\n",time_error);
00074 }
00075 return (0);
00076 }
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Definition at line 90 of file timer.c. References error(). Referenced by delay_uS(). 00090 {
00091 static struct timeval tv_last;
00092 static int init=1;
00093 struct timeval tv;
00094 long delta;
00095 long error;
00096 gettimeofday(&tv,NULL);
00097 if (!init) {
00098 if (tv.tv_usec<tv_last.tv_usec) {
00099 delta=(1000000-tv_last.tv_usec)+tv.tv_usec;
00100 }
00101 else {
00102 delta=tv.tv_usec-tv_last.tv_usec;
00103 }
00104 tv_last.tv_usec=tv.tv_usec;
00105 error=delta-period;
00106 }
00107 else {
00108 tv_last.tv_usec=tv.tv_usec;
00109 error=0;
00110 init=0;
00111 }
00112 return(error);
00113 }
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Definition at line 78 of file timer.c. References delay_uS(), timer_struct::timeout, timer_struct::timer_period, and timer_struct_t. Referenced by scheduler(). 00078 {
00079 int status;
00080 timer_struct_t *tp = (timer_struct_t *) arg;
00081
00082 while (1) {
00083 delay_uS(tp->timer_period);
00084 tp->timeout=1;
00085 }
00086 status = pthread_detach(pthread_self());
00087 return NULL;
00088 }
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1.3.9.1