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/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** This program 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 Affero General Public License for more details.
**
** You should have received a copy of the GNU Affero General Public License along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/
#ifndef ZABBIX_THREADS_H
#define ZABBIX_THREADS_H
#include "zbxcommon.h"
#if defined(_WINDOWS) || defined(__MINGW32__)
/* the ZBXEndThread function is implemented in service.c file */
void CALLBACK ZBXEndThread(ULONG_PTR dwParam);
#define ZBX_THREAD_ERROR 0
#define ZBX_THREAD_HANDLE HANDLE
#define ZBX_THREAD_HANDLE_NULL NULL
#define ZBX_THREAD_PRIORITY_NONE 0
#define ZBX_THREAD_ENTRY_POINTER(pointer_name) \
unsigned (__stdcall *pointer_name)(void *)
#define ZBX_THREAD_ENTRY(entry_name, arg_name) \
unsigned __stdcall entry_name(void *arg_name)
#define zbx_thread_exit(status) \
_endthreadex((unsigned int)(status)); \
return ((unsigned)(status))
#define zbx_sleep(sec) SleepEx(((DWORD)(sec)) * ((DWORD)1000), TRUE)
#define zbx_thread_kill(h) QueueUserAPC(ZBXEndThread, h, 0)
#define zbx_thread_kill_fatal(h) QueueUserAPC(ZBXEndThread, h, 0)
#else /* not _WINDOWS */
int zbx_fork(void);
void zbx_child_fork(pid_t *pid);
int zbx_is_child_pid(pid_t pid, const pid_t *child_pids, size_t child_pids_num);
#define ZBX_THREAD_ERROR -1
#define ZBX_THREAD_HANDLE pid_t
#define ZBX_THREAD_HANDLE_NULL 0
#define ZBX_THREAD_PRIORITY_NONE 0
#define ZBX_THREAD_PRIORITY_FIRST 1
#define ZBX_THREAD_PRIORITY_SECOND 2
#define ZBX_THREAD_PRIORITY_COUNT 3
#define ZBX_THREAD_ENTRY_POINTER(pointer_name) \
unsigned (* pointer_name)(void *)
#define ZBX_THREAD_ENTRY(entry_name, arg_name) \
unsigned entry_name(void *arg_name)
/* Calling _exit() to terminate child process immediately is important. See ZBX-5732 for details. */
#define zbx_thread_exit(status) \
_exit((int)(status)); \
return ((unsigned)(status))
#define zbx_sleep(sec) sleep((sec))
#define zbx_thread_kill(h) kill(h, SIGUSR2)
#define zbx_thread_kill_fatal(h) kill(h, SIGHUP)
#endif /* _WINDOWS */
typedef struct
{
unsigned char program_type;
int server_num;
int process_num;
unsigned char process_type;
}
zbx_thread_info_t;
typedef struct
{
zbx_thread_info_t info;
void *args;
#if defined(_WINDOWS) || defined(__MINGW32__)
ZBX_THREAD_ENTRY_POINTER(entry);
#endif
}
zbx_thread_args_t;
void zbx_thread_start(ZBX_THREAD_ENTRY_POINTER(handler), zbx_thread_args_t *thread_args, ZBX_THREAD_HANDLE *thread);
int zbx_thread_wait(ZBX_THREAD_HANDLE thread);
void zbx_threads_kill_and_wait(ZBX_THREAD_HANDLE *threads, const int *threads_flags, int threads_num, int ret);
#if !defined(_WINDOWS) && !defined(__MINGW32__)
void zbx_pthread_init_attr(pthread_attr_t *attr);
#endif
#endif /* ZABBIX_THREADS_H */
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