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/* $Id: profiler.c,v 1.8 2003/01/29 05:31:39 graziano Exp $ */
#include "config_nws.h"
#include <stdio.h> /* FILE */
#include <unistd.h> /* getpid() */
#include <sys/types.h> /* getpid() */
#include <sys/time.h> /* gettimeofday() */
#include <sys/resource.h> /* getrusage() */
#include "profiler.h"
#ifdef HAVE_GETRUSAGE
#ifndef timerclear
#define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
#endif
static struct timeval lastUser;
static struct timeval lastSystem;
static struct timeval lastReal;
static struct timeval markLastUser;
static struct timeval markLastSystem;
static struct timeval markLastReal;
static struct rusage rusageBuffer;
int
getrusage(int who,
struct rusage *rusage);
void
ProfWriteTime(const char *s) {
char filename[40];
FILE *pFile;
struct timeval tp;
sprintf(filename, "/tmp/complibPerf%ld", (long int)getpid());
pFile=fopen(filename, "a");
gettimeofday(&tp, NULL);
fprintf(pFile, "%s:%ld.%ld\n", s, (long int)tp.tv_sec, (long int)tp.tv_usec);
fclose(pFile);
}
int
ProfStart() {
getrusage(RUSAGE_SELF, &rusageBuffer);
lastUser = rusageBuffer.ru_utime;
lastSystem = rusageBuffer.ru_stime;
gettimeofday(&lastReal, NULL);
timerclear(&markLastSystem);
timerclear(&markLastUser);
timerclear(&markLastReal);
/* writeTime("start"); */
return 1;
}
void
ProfStop() {
getrusage(RUSAGE_SELF, &rusageBuffer);
markLastUser.tv_sec = rusageBuffer.ru_utime.tv_sec - lastUser.tv_sec;
markLastUser.tv_usec = rusageBuffer.ru_utime.tv_usec - lastUser.tv_usec;
if(markLastUser.tv_usec < 0) {
markLastUser.tv_usec += 1000000;
markLastUser.tv_sec-=1;
}
markLastSystem.tv_sec = rusageBuffer.ru_stime.tv_sec - lastSystem.tv_sec;
markLastSystem.tv_usec = rusageBuffer.ru_stime.tv_usec - lastSystem.tv_usec;
if(markLastSystem.tv_usec < 0) {
markLastSystem.tv_usec += 1000000;
markLastSystem.tv_sec-=1;
}
gettimeofday(&markLastReal, NULL);
markLastReal.tv_sec -= lastReal.tv_sec;
markLastReal.tv_usec -= lastReal.tv_usec;
if(markLastReal.tv_usec < 0) {
markLastReal.tv_usec += 1000000;
markLastReal.tv_sec-=1;
}
/* writeTime("stop"); */
}
unsigned long
ProfMsec() {
return (markLastUser.tv_sec*1000 + markLastSystem.tv_sec*1000
+ markLastUser.tv_usec/1000 + markLastSystem.tv_usec/1000);
}
unsigned long
ProfUsec() {
return (markLastUser.tv_sec*1000000 + markLastUser.tv_usec +
markLastSystem.tv_sec*1000000 + markLastSystem.tv_usec);
}
unsigned long
ProfMsecR() {
return (markLastReal.tv_sec*1000 + markLastReal.tv_usec/1000);
}
unsigned long
ProfUsecR() {
return (markLastReal.tv_sec*1000000 + markLastReal.tv_usec);
}
/* take advantage of non-destructive stop, but hide the decision here */
unsigned long
ProfElapsedMsecR() {
ProfStop();
return ProfMsecR();
}
#else
int
ProfStart(void) {
return 0;
}
void
ProfStop(void) {
}
unsigned long
ProfMsec(void) {
return 0;
}
unsigned long
ProfUsec(void) {
return 0;
}
unsigned long
ProfMsecR(void) {
return 0;
}
unsigned long
ProfUsecR(void) {
return 0;
}
unsigned long
ProfElapsedMsecR(void) {
return 0;
}
void
ProfWriteTime(const char *s) {
}
#endif
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