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/*
* Copyright (c) 2002-2013 Balabit
* Copyright (c) 1998-2013 Balázs Scheidler
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#ifndef MAINLOOP_WORKER_H_INCLUDED
#define MAINLOOP_WORKER_H_INCLUDED 1
#include "mainloop.h"
#include <iv_list.h>
#define MAIN_LOOP_MIN_WORKER_THREADS 2
#define MAIN_LOOP_MAX_WORKER_THREADS 256
typedef enum
{
MLW_UNKNOWN,
MLW_ASYNC_WORKER = 1,
MLW_THREADED_OUTPUT_WORKER,
MLW_THREADED_INPUT_WORKER,
MAIN_LOOP_WORKER_TYPE_MAX
} MainLoopWorkerType;
/*
* A batch callback is registered during the processing of messages in a
* given thread. Batch callbacks are invoked when the batch is complete.
*
* This mechanism is used by LogQueueFifo implementation, that consumes
* messages into a per-thread, unlocked queue first and once the whole batch
* is in, it grabs a lock and propagates the elements towards the consumer.
*/
typedef struct _WorkerBatchCallback
{
struct iv_list_head list;
MainLoopTaskFunc func;
gpointer user_data;
} WorkerBatchCallback;
static inline void
worker_batch_callback_init(WorkerBatchCallback *self)
{
INIT_IV_LIST_HEAD(&self->list);
}
void main_loop_worker_register_batch_callback(WorkerBatchCallback *cb);
void main_loop_worker_invoke_batch_callbacks(void);
void main_loop_worker_assert_batch_callbacks_were_processed(void);
typedef void (*WorkerExitNotificationFunc)(gpointer user_data);
gint main_loop_worker_get_thread_index(void);
void main_loop_worker_job_start(void);
void main_loop_worker_job_complete(void);
void main_loop_worker_thread_start(MainLoopWorkerType worker_type);
void main_loop_worker_thread_stop(void);
void main_loop_worker_run_gc(void);
void main_loop_worker_register_exit_notification_callback(WorkerExitNotificationFunc func, gpointer user_data);
gboolean main_loop_worker_is_worker_thread(void);
void main_loop_worker_sync_call(void (*func)(void *user_data), void *user_data);
void main_loop_sync_worker_startup_and_teardown(void);
void main_loop_worker_init(void);
void main_loop_worker_deinit(void);
gint main_loop_worker_get_max_number_of_threads(void);
void main_loop_worker_allocate_thread_space(gint num_threads);
void main_loop_worker_finalize_thread_space(void);
extern volatile gboolean main_loop_workers_quit;
extern volatile gboolean is_reloading_scheduled;
static inline gboolean
main_loop_worker_job_quit(void)
{
return main_loop_workers_quit;
}
static inline void
main_loop_assert_worker_thread(void)
{
#if SYSLOG_NG_ENABLE_DEBUG
g_assert(main_loop_worker_is_worker_thread());
#endif
}
#endif
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