/* \brief backtrace handler of glhck */
static void _glhckBacktrace(int signal)
{
(void)signal;
/* GDB */
#if defined(__linux__) || defined(__APPLE__)
char buf[1024];
pid_t dying_pid = getpid();
pid_t child_pid = fork();
#if HAS_YAMA_PRCTL
/* tell yama that we allow our child_pid to trace our process */
if (child_pid > 0) prctl(PR_SET_PTRACER, child_pid);
#endif
if (child_pid < 0) {
_glhckPuts("\1fork failed for gdb backtrace.");
} else if (child_pid == 0) {
/* sed -n '/bar/h;/bar/!H;$!b;x;p' (another way, if problems) */
printf("\n---- gdb ----\n");
snprintf(buf, sizeof(buf)-1, "gdb -p %d -batch -ex bt 2>/dev/null | sed -n '/<signal handler/{n;x;b};H;${x;p}'", dying_pid);
const char* argv[] = { "sh", "-c", buf, NULL };
execve("/bin/sh", (char**)argv, NULL);
_glhckPuts("\1failed to launch gdb for backtrace.");
_exit(EXIT_FAILURE);
} else {
waitpid(child_pid, NULL, 0);
}
#endif
/* SIGABRT || SIGSEGV */
exit(EXIT_FAILURE);
}
static void _glhckFpeHandler(int signal)
{
(void)signal;
_glhckPuts("\n\4SIGFPE \1signal received!");
_glhckPuts("Run the program again with DEBUG=2,+all,+trace to catch where it happens.");
_glhckPuts("Or optionally run the program with GDB.");
abort();
}
/* \brief output queued textures */
GLHCKAPI void glhckRenderPrintTextureQueue(void)
{
unsigned int i;
__GLHCKtextureQueue *textures;
GLHCK_INITIALIZED();
textures = &GLHCKRD()->textures;
_glhckPuts("\n--- Texture Queue ---");
for (i = 0; i != textures->count; ++i)
_glhckPrintf("%u. %p", i, textures->queue[i]);
_glhckPuts("---------------------");
_glhckPrintf("count/alloc: %u/%u", textures->count, textures->allocated);
_glhckPuts("--------------------\n");
}
/* \brief output queued objects */
GLHCKAPI void glhckRenderPrintObjectQueue(void)
{
unsigned int i;
__GLHCKobjectQueue *objects;
GLHCK_INITIALIZED();
objects = &GLHCKRD()->objects;
_glhckPuts("\n--- Object Queue ---");
for (i = 0; i != objects->count; ++i)
_glhckPrintf("%u. %p", i, objects->queue[i]);
_glhckPuts("--------------------");
_glhckPrintf("count/alloc: %u/%u", objects->count, objects->allocated);
_glhckPuts("--------------------\n");
}
/* \brief colored printf */
void _glhckPrintf(const char *fmt, ...)
{
va_list args;
char buffer[2048];
memset(buffer, 0, sizeof(buffer));
va_start(args, fmt);
vsnprintf(buffer, sizeof(buffer)-1, fmt, args);
va_end(args);
_glhckPuts(buffer);
}