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/*
* The Rin Library – diagnostics module
*
* Copyright (C) 2015 Gediminas Jakutis
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; version 2.1
* of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "diagnostic_private.h"
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "rin/diagnostic.h"
#include "rin/time.h"
#include "rin/definitions.h"
static const char default_format[] = "C:F:mn";
static const char valid_format[] = "CFtTn:m";
static struct iostate {
struct timespec start;
FILE *err;
FILE *warn;
FILE *fixme;
FILE *info;
char *err_format;
char *warn_format;
char *fixme_format;
char *info_format;
} state = {{0, 0}, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL};
void rin_diag_cleanup(void)
{
char *tmp;
tmp = state.err_format;
state.err_format = NULL;
free(tmp);
tmp = state.warn_format;
state.warn_format = NULL;
free(tmp);
tmp = state.fixme_format;
state.fixme_format = NULL;
free(tmp);
tmp = state.info_format;
state.info_format = NULL;
free(tmp);
}
void rin_diag_init(void)
{
clock_gettime(RIN_CLOCK_WALL_COUNTER, &state.start);
atexit(rin_diag_cleanup);
}
int rin_diag_format(const enum rin_diag_outstream channel, const char * const format)
{
char *tmp;
size_t i, j;
if (!format) {
tmp = NULL;
} else {
for (i = 0; format[i]; ++i) {
int valid = 0;
for (j = 0; valid_format[j]; ++j) {
if (valid_format[j] == format [i]) {
valid = 1;
break;
}
}
if (!valid) {
return EINVAL;
}
}
tmp = strdup(format);
}
switch (channel) {
case rin_diag_err:
free(state.err_format);
state.err_format = tmp;
break;
case rin_diag_warn:
free(state.warn_format);
state.warn_format = tmp;
break;
case rin_diag_fixme:
free(state.fixme_format);
state.fixme_format = tmp;
break;
case rin_diag_info:
free(state.info_format);
state.info_format = tmp;
break;
default:
return EINVAL;
}
return 0;
}
int rin_diag_set_outstream(const enum rin_diag_outstream channel, FILE * const stream)
{
switch (channel) {
case rin_diag_err:
state.err = stream;
break;
case rin_diag_warn:
state.warn = stream;
break;
case rin_diag_fixme:
state.fixme = stream;
break;
case rin_diag_info:
state.info = stream;
break;
default:
return EINVAL;
}
return 0;
}
void __rin_err(const char* const func_name, const char *format, ...)
{
va_list args;
va_start(args, format);
__rin_msg(state.err ? state.err : stderr, "error", func_name,
state.err_format ? state.err_format : default_format,
format, args);
}
void __rin_warn(const char* const func_name, const char *format, ...)
{
va_list args;
va_start(args, format);
__rin_msg(state.warn ? state.warn : stderr, "warning", func_name,
state.warn_format ? state.warn_format : default_format,
format, args);
}
void __rin_fixme(const char* const func_name, const char *format, ...)
{
va_list args;
va_start(args, format);
__rin_msg(state.fixme ? state.fixme : stderr, "fixme", func_name,
state.fixme_format ? state.fixme_format : default_format,
format, args);
}
void __rin_info(const char* const func_name, const char *format, ...)
{
va_list args;
va_start(args, format);
__rin_msg(state.info ? state.info : stdout, "info", func_name,
state.info_format ? state.info_format : default_format,
format, args);
}
static void __rin_msg(FILE * const stream, const char *prefix, const char* const func_name, const char *rin_format, const char *format, va_list args)
{
struct timespec t;
size_t i;
int gottime = 0;
for (i = 0; rin_format[i]; ++i) {
switch (rin_format[i]) {
case 'C':
fprintf(stream, "%s", prefix);
break;
case 'F':
fprintf(stream, "%s", func_name);
break;
case 't':
/* gettid returns pid_t, which is a "signed integer type"
* there is no clean way to detect its actual size,
* so promote it to long it, if smaller and print THAT.
* So far we can semi-safely assume it is not going to be
* bigger than 8 hex digits.
*/
fprintf(stream, "%08lx", (long int) gettid());
break;
case 'T':
if (!gottime) {
clock_gettime(RIN_CLOCK_WALL_COUNTER, &t);
t = rin_time_sub(&t, &state.start);
gottime = 1;
}
fprintf(stream, "%lus%06lu.%03luµs", t.tv_sec, t.tv_nsec / 1000, t.tv_nsec % 1000);
break;
case 'n':
fprintf(stream, "\n");
break;
case ':':
fprintf(stream, ":");
break;
case 'm':
vfprintf(stream, format, args);
break;
}
}
}
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