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ggml : Callback before abort (#14481)

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* Add a callback that will be called just before abort. This allows apps without a console to display a message to the user and save data if needed.

* Return previous callback to allow callback chaining

* style fixes

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Co-authored-by: Diego Devesa <slarengh@gmail.com>
This commit is contained in:
Björn Ganster
2025-07-02 07:19:31 +02:00
committed by GitHub
parent de56944147
commit 68b3cd6514
2 changed files with 26 additions and 4 deletions
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7
ggml/include/ggml.h
View File

@ -314,6 +314,13 @@
extern "C" {
#endif
// Function type used in fatal error callbacks
typedef void (*ggml_abort_callback_t)(const char * error_message);
// Set the abort callback (passing null will restore original abort functionality: printing a message to stdout)
// Returns the old callback for chaining
GGML_API ggml_abort_callback_t ggml_set_abort_callback(ggml_abort_callback_t callback);
GGML_NORETURN GGML_ATTRIBUTE_FORMAT(3, 4)
GGML_API void ggml_abort(const char * file, int line, const char * fmt, ...);

23
ggml/src/ggml.c
View File

@ -202,19 +202,34 @@ void ggml_print_backtrace(void) {
}
#endif
static ggml_abort_callback_t g_abort_callback = NULL;
// Set the abort callback (passing null will restore original abort functionality: printing a message to stdout)
GGML_API ggml_abort_callback_t ggml_set_abort_callback(ggml_abort_callback_t callback) {
ggml_abort_callback_t ret_val = g_abort_callback;
g_abort_callback = callback;
return ret_val;
}
void ggml_abort(const char * file, int line, const char * fmt, ...) {
fflush(stdout);
fprintf(stderr, "%s:%d: ", file, line);
char message[2048];
int offset = snprintf(message, sizeof(message), "%s:%d: ", file, line);
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
vsnprintf(message + offset, sizeof(message) - offset, fmt, args);
va_end(args);
fprintf(stderr, "\n");
if (g_abort_callback) {
g_abort_callback(message);
} else {
// default: print error and backtrace to stderr
fprintf(stderr, "%s\n", message);
ggml_print_backtrace();
}
ggml_print_backtrace();
abort();
}