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logging: Add method to set thread local log function 

This allows the user to override the log function in the current thread
without receiving log messages from concurrent tasks.
pull/110/head
Andri Yngvason 2023-12-26 11:58:35 +00:00
parent a7f6c50d6d
commit 4691a35b7b
2 changed files with 15 additions and 1 deletions
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1
include/neatvnc.h
View File

@ -238,5 +238,6 @@ void nvnc_set_cursor(struct nvnc*, struct nvnc_fb*, uint16_t width,
void nvnc_default_logger(const struct nvnc_log_data* meta, const char* message);
void nvnc_set_log_fn(nvnc_log_fn);
void nvnc_set_log_fn_thread_local(nvnc_log_fn fn);
void nvnc_set_log_level(enum nvnc_log_level);
void nvnc__log(const struct nvnc_log_data*, const char* fmt, ...);

15
src/logging.c
View File

@ -25,6 +25,7 @@
#include <stdarg.h>
#include <string.h>
#include <ctype.h>
#include <threads.h>
#ifdef HAVE_LIBAVUTIL
#include <libavutil/avutil.h>
@ -33,6 +34,7 @@
#define EXPORT __attribute__((visibility("default")))
static nvnc_log_fn log_fn = nvnc_default_logger;
static thread_local nvnc_log_fn thread_local_log_fn = NULL;
#ifndef NDEBUG
static enum nvnc_log_level log_level = NVNC_LOG_DEBUG;
@ -42,6 +44,11 @@ static enum nvnc_log_level log_level = NVNC_LOG_WARNING;
static bool is_initialised = false;
static nvnc_log_fn get_log_fn(void)
{
return thread_local_log_fn ? thread_local_log_fn : log_fn;
}
static char* trim_left(char* str)
{
while (isspace(*str))
@ -97,7 +104,7 @@ static void nvnc__vlog(const struct nvnc_log_data* meta, const char* fmt,
if (meta->level <= log_level) {
vsnprintf(message, sizeof(message), fmt, args);
log_fn(meta, trim(message));
get_log_fn()(meta, trim(message));
}
if (meta->level == NVNC_LOG_PANIC)
@ -179,6 +186,12 @@ void nvnc_set_log_fn(nvnc_log_fn fn)
log_fn = fn;
}
EXPORT
void nvnc_set_log_fn_thread_local(nvnc_log_fn fn)
{
thread_local_log_fn = fn;
}
EXPORT
void nvnc__log(const struct nvnc_log_data* meta,
const char* fmt, ...)