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logger.c
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logger.c
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#include "ringbuffer.h"
#include <pthread.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <pthread.h>
#include "logger.h"
static struct ringbuffer logbuffer;
static FILE* outfile;
static pthread_mutex_t flock;
static int loggerReady = 0;
static void printout(char msg[]){
pthread_mutex_lock(&flock);
if (outfile != NULL){
fprintf(outfile, "%s", msg);
}
pthread_mutex_unlock(&flock);
}
static void printAndFree(void* str){
printout((char*)str);
free(str);
}
void initLogger(char path[]){
logbuffer = newRingBuffer();
outfile = fopen(path, "w");
if (outfile == NULL){
outfile = fopen("/dev/stderr", "w");
}
loggerReady = 1;
}
void closeLogger(void){
closeRingBuffer(&logbuffer);
}
void destroyLogger(void){
destroyRingBuffer(&logbuffer, printAndFree);
pthread_mutex_lock(&flock);
fclose(outfile);
outfile = NULL;
pthread_mutex_unlock(&flock);
}
void processLogger(void){
char* msg = (char*)ringBufferReadTimed(&logbuffer, 1);
if (msg == NULL){
return;
}
printout(msg);
free(msg);
}
//Main logging function
void dlog(const char* format, ...){
if (!loggerReady){
return;
}
va_list args;
va_start(args, format);
char* msgcopy = malloc(sizeof(char)*1024);
vsnprintf(msgcopy, 1024, format, args);
if (ringBufferWrite(&logbuffer, msgcopy)){
//Closing fallback
printout(msgcopy);
free(msgcopy);
}
}