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/*
* debug.c - Debugging utilities
*
* xvba-video (C) 2009-2011 Splitted-Desktop Systems
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "sysdeps.h"
#include "debug.h"
#include <stdarg.h>
#include "utils.h"
#if USE_VALGRIND
# include <valgrind.h>
#endif
static void do_vprintf(const char *msg, va_list args)
{
#if USE_VALGRIND
if (RUNNING_ON_VALGRIND) {
static char *fmt = NULL;
static int fmtlen = 0;
int xmsglen = vsnprintf(NULL, 0, msg, args);
if ((fmt = realloc(fmt, fmtlen + xmsglen + 1)) != NULL) {
vsnprintf(fmt + fmtlen, fmtlen + xmsglen + 1, msg, args);
fmt[fmtlen += xmsglen] = '\0';
if (fmt[fmtlen - 1] == '\n') {
fmt[fmtlen - 1] = '\0';
VALGRIND_PRINTF(fmt); /* this already adds a terminal '\n' */
free(fmt);
fmt = NULL;
fmtlen = 0;
}
}
return;
}
#endif
vprintf(msg, args);
}
static void do_printf(const char *msg, ...)
{
va_list args;
va_start(args, msg);
do_vprintf(msg, args);
va_end(args);
}
void xvba_error_message(const char *msg, ...)
{
va_list args;
fprintf(stderr, "%s: error: ", PACKAGE_NAME);
va_start(args, msg);
vfprintf(stderr, msg, args);
va_end(args);
}
void xvba_information_message(const char *msg, ...)
{
va_list args;
do_printf("%s: ", PACKAGE_NAME);
va_start(args, msg);
do_vprintf(msg, args);
va_end(args);
}
static int debug_enabled(void)
{
static int g_debug_enabled = -1;
if (g_debug_enabled < 0) {
if (getenv_yesno("XVBA_VIDEO_DEBUG", &g_debug_enabled) < 0)
g_debug_enabled = 0;
}
return g_debug_enabled;
}
void debug_message(const char *msg, ...)
{
va_list args;
if (!debug_enabled())
return;
do_printf("%s: ", PACKAGE_NAME);
va_start(args, msg);
do_vprintf(msg, args);
va_end(args);
}
static int g_trace_is_new_line = 1;
static int g_trace_indent = 0;
int trace_enabled(void)
{
static int g_trace_enabled = -1;
if (g_trace_enabled < 0) {
if (getenv_yesno("XVBA_VIDEO_TRACE", &g_trace_enabled) < 0)
g_trace_enabled = 0;
}
return g_trace_enabled;
}
static int trace_indent_width(void)
{
static int g_indent_width = -1;
if (g_indent_width < 0) {
if (getenv_int("XVBA_VIDEO_TRACE_INDENT_WIDTH", &g_indent_width) < 0)
g_indent_width = 4;
}
return g_indent_width;
}
void trace_indent(int inc)
{
g_trace_indent += inc;
}
void trace_print(const char *format, ...)
{
va_list args;
if (g_trace_is_new_line) {
int i, j, n;
printf("%s: ", PACKAGE_NAME);
n = trace_indent_width();
for (i = 0; i < g_trace_indent; i++) {
for (j = 0; j < n / 4; j++)
printf(" ");
for (j = 0; j < n % 4; j++)
printf(" ");
}
}
va_start(args, format);
vfprintf(stdout, format, args);
va_end(args);
g_trace_is_new_line = (strchr(format, '\n') != NULL);
if (g_trace_is_new_line)
fflush(stdout);
}
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