/********************************************************************************
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* Copyright: (C) 2018 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: proc.h
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* Description: This head file is for Linux process API
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*
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* Version: 1.0.0(11/06/2018~)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "11/06/2018 09:21:33 PM"
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*
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********************************************************************************/
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#ifndef __CP_PROC_H
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#define __CP_PROC_H
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#include <signal.h>
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#define PID_ASCII_SIZE 11
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typedef struct _st_sigproc
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{
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int signal;
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unsigned stop; /* 0: Not term 1: Stop */
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} st_sigproc;
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/* global variable for process or thread to exit */
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extern st_sigproc g_signal;
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/* install signal handler */
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extern void install_proc_signal(void);
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/* record process PID into $pid_file for check_daemon_running() to check program running or not */
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extern int record_daemon_pid(const char *pid_file);
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/* check program already running or not
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* 1: The daemon program alread running 0: Not running
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*/
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extern int check_daemon_running(const char *pid_file);
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/* set program running as daemon */
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extern int set_daemon_running(const char *pid_file);
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/* create a system command and excute it */
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extern void exec_system_cmd(const char *format, ...);
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/* create and start a thread to excute function pointed by $thread_workbody */
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typedef void *(thread_function) (void *thread_arg);
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extern int thread_start(pthread_t * thread_id, thread_function * thread_workbody, void *thread_arg);
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#endif
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