gri3-wm/src/log.c

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/*
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* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
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* © 2009-2010 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* src/log.c: handles the setting of loglevels, contains the logging functions.
*
*/
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
#include <sys/time.h>
#include "util.h"
#include "log.h"
/* loglevels.h is autogenerated at make time */
#include "loglevels.h"
static uint64_t loglevel = 0;
static bool verbose = true;
static FILE *errorfile;
char *errorfilename;
/*
* Initializes logging by creating an error logfile in /tmp (or
* XDG_RUNTIME_DIR, see get_process_filename()).
*
*/
void init_logging() {
errorfilename = get_process_filename("errorlog");
if (errorfilename == NULL) {
ELOG("Could not initialize errorlog\n");
return;
}
errorfile = fopen(errorfilename, "w");
}
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/*
* Set verbosity of i3. If verbose is set to true, informative messages will
* be printed to stdout. If verbose is set to false, only errors will be
* printed.
*
*/
void set_verbosity(bool _verbose) {
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verbose = _verbose;
}
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/*
* Enables the given loglevel.
*
*/
void add_loglevel(const char *level) {
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/* Handle the special loglevel "all" */
if (strcasecmp(level, "all") == 0) {
loglevel = UINT64_MAX;
return;
}
for (int i = 0; i < sizeof(loglevels) / sizeof(char*); i++) {
if (strcasecmp(loglevels[i], level) != 0)
continue;
/* The position in the array (plus one) is the amount of times
* which we need to shift 1 to the left to get our bitmask for
* the specific loglevel. */
loglevel |= (1 << (i+1));
break;
}
}
/*
* Logs the given message to stdout while prefixing the current time to it.
* This is to be called by *LOG() which includes filename/linenumber/function.
*
*/
void vlog(char *fmt, va_list args) {
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char timebuf[64];
/* Get current time */
time_t t = time(NULL);
/* Convert time to local time (determined by the locale) */
struct tm *tmp = localtime(&t);
/* Generate time prefix */
strftime(timebuf, sizeof(timebuf), "%x %X - ", tmp);
#ifdef DEBUG_TIMING
struct timeval tv;
gettimeofday(&tv, NULL);
printf("%s%d.%d - ", timebuf, tv.tv_sec, tv.tv_usec);
#else
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printf("%s", timebuf);
#endif
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vprintf(fmt, args);
}
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/*
* Logs the given message to stdout while prefixing the current time to it,
* but only if verbose mode is activated.
*
*/
void verboselog(char *fmt, ...) {
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va_list args;
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if (!verbose)
return;
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va_start(args, fmt);
vlog(fmt, args);
va_end(args);
}
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/*
* Logs the given message to stdout while prefixing the current time to it.
*
*/
void errorlog(char *fmt, ...) {
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va_list args;
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va_start(args, fmt);
vlog(fmt, args);
va_end(args);
/* also log to the error logfile, if opened */
va_start(args, fmt);
vfprintf(errorfile, fmt, args);
fflush(errorfile);
va_end(args);
}
/*
* Logs the given message to stdout while prefixing the current time to it,
* but only if the corresponding debug loglevel was activated.
* This is to be called by DLOG() which includes filename/linenumber
*
*/
void debuglog(uint64_t lev, char *fmt, ...) {
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va_list args;
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if ((loglevel & lev) == 0)
return;
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va_start(args, fmt);
vlog(fmt, args);
va_end(args);
}