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weston/include/libweston/weston-log.h

119 lines
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/*
* Copyright © 2017 Pekka Paalanen <pq@iki.fi>
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial
* portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef WESTON_LOG_H
#define WESTON_LOG_H
#include <stdbool.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif
struct weston_compositor;
struct weston_log_context;
struct wl_display;
struct weston_log_subscriber;
struct weston_log_subscription;
void
weston_compositor_enable_debug_protocol(struct weston_compositor *);
bool
weston_compositor_is_debug_protocol_enabled(struct weston_compositor *);
struct weston_log_scope;
struct weston_debug_stream;
/** weston_log_scope callback
*
* @param scope The log scope.
* @param user_data The \c user_data argument given to
* weston_compositor_add_log_scope()
*
* @memberof weston_log_scope
*/
typedef void (*weston_log_scope_cb)(struct weston_log_subscription *sub,
void *user_data);
struct weston_log_scope *
weston_compositor_add_log_scope(struct weston_log_context *compositor,
const char *name,
const char *description,
weston_log_scope_cb new_subscriber,
void *user_data);
void
weston_compositor_log_scope_destroy(struct weston_log_scope *scope);
bool
weston_log_scope_is_enabled(struct weston_log_scope *scope);
void
weston_log_scope_write(struct weston_log_scope *scope,
const char *data, size_t len);
void
weston_log_scope_vprintf(struct weston_log_scope *scope,
const char *fmt, va_list ap);
void
weston_log_scope_printf(struct weston_log_scope *scope,
const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
void
weston_log_subscription_printf(struct weston_log_subscription *scope,
const char *fmt, ...)
__attribute__ ((format (printf, 2, 3)));
void
weston_log_scope_complete(struct weston_log_scope *scope);
void
weston_log_subscription_complete(struct weston_log_subscription *sub);
char *
weston_log_scope_timestamp(struct weston_log_scope *scope,
char *buf, size_t len);
void
weston_log_subscribe(struct weston_log_context *log_ctx,
struct weston_log_subscriber *subscriber,
const char *scope_name);
struct weston_log_subscriber *
weston_log_subscriber_create_log(FILE *dump_to);
void
weston_log_subscriber_destroy_log(struct weston_log_subscriber *sub);
#ifdef __cplusplus
}
#endif
#endif /* WESTON_LOG_H */