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log: Make the message buffer static.

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Now we don't have to worry about allocation failure, or performance
issues or changes to the allocation layout when trying to track down
subtle bugs.
This commit is contained in:
Ryan C. Gordon 2022-04-27 12:05:07 -04:00
parent c4141bc11c
commit fde9a7086e
No known key found for this signature in database
GPG key ID: FA148B892AB48044
1 changed files with 12 additions and 8 deletions
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20
src/SDL_log.c
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@ -284,7 +284,7 @@ GetCategoryPrefix(int category)
void
SDL_LogMessageV(int category, SDL_LogPriority priority, const char *fmt, va_list ap)
{
char *message;
static char message[SDL_MAX_LOG_MESSAGE]
size_t len;
/* Nothing to do if we don't have an output function */
@ -302,9 +302,13 @@ SDL_LogMessageV(int category, SDL_LogPriority priority, const char *fmt, va_list
return;
}
message = (char *) SDL_malloc(SDL_MAX_LOG_MESSAGE);
if (!message) {
return;
if (!log_function_mutex) {
/* this mutex creation can race if you log from two threads at startup. You should have called SDL_Init first! */
log_function_mutex = SDL_CreateMutex();
}
if (log_function_mutex) {
SDL_LockMutex(log_function_mutex);
}
SDL_vsnprintf(message, SDL_MAX_LOG_MESSAGE, fmt, ap);
@ -318,11 +322,11 @@ SDL_LogMessageV(int category, SDL_LogPriority priority, const char *fmt, va_list
}
}
/* this mutex creation can race if you log from two threads at startup. You should have called SDL_Init first! */
if (!log_function_mutex) { log_function_mutex = SDL_CreateMutex(); }
if (log_function_mutex) { SDL_LockMutex(log_function_mutex); }
SDL_log_function(SDL_log_userdata, category, priority, message);
if (log_function_mutex) { SDL_UnlockMutex(log_function_mutex); }
if (log_function_mutex) {
SDL_UnlockMutex(log_function_mutex);
}
SDL_free(message);
}