/********************************************************************************
|
* Copyright: (C) 2020 LingYun IoT System Studio
|
* All rights reserved.
|
*
|
* Filename: proc.h
|
* Description: This head file is for Linux process/thread API
|
*
|
* Version: 1.0.0(7/06/2012~)
|
* Author: Guo Wenxue <guowenxue@gmail.com>
|
* ChangeLog: 1, Release initial version on "7/06/2012 09:21:33 PM"
|
*
|
********************************************************************************/
|
|
#ifndef __PROC_H_
|
#define __PROC_H_
|
|
#include <signal.h>
|
#include <time.h>
|
|
#define PID_ASCII_SIZE 11
|
|
typedef struct proc_signal_s
|
{
|
int signal;
|
unsigned stop; /* 0: Not term 1: Stop */
|
} proc_signal_t;
|
|
typedef void *(* thread_body_t) (void *thread_arg);
|
|
extern proc_signal_t g_signal;
|
|
/* install default signal process functions */
|
extern void install_default_signal(void);
|
|
/* excute a linux command by system() */
|
extern void exec_system_cmd(const char *format, ...);
|
|
/* check program already running or not, if not then run it and record pid into $pidfile */
|
extern int check_set_program_running(int daemon, char *pidfile);
|
|
/* check program already running or not from $pid_file */
|
extern int check_daemon_running(const char *pid_file);
|
|
/* set program daemon running and record pid in $pid_file */
|
extern int set_daemon_running(const char *pid_file);
|
|
/* record proces ID into $pid_file */
|
extern int record_daemon_pid(const char *pid_file);
|
|
/* stop program running from $pid_file */
|
extern int stop_daemon_running(const char *pid_file);
|
|
/* my implementation for set program running in daemon */
|
extern void daemonize(int nochdir, int noclose);
|
|
/* start a new thread to run $thread_workbody point function */
|
extern int thread_start(pthread_t *thread_id, thread_body_t thread_workbody, void *thread_arg);
|
|
/* +---------------------+
|
* | Low level API |
|
* +---------------------+*/
|
|
/* get daemon process ID from $pid_file */
|
extern pid_t get_daemon_pid(const char *pid_file);
|
|
/* +------------------------+
|
* | inline functions API |
|
* +------------------------+*/
|
static inline void msleep(unsigned long ms)
|
{
|
struct timespec cSleep;
|
unsigned long ulTmp;
|
|
cSleep.tv_sec = ms / 1000;
|
if (cSleep.tv_sec == 0)
|
{
|
ulTmp = ms * 10000;
|
cSleep.tv_nsec = ulTmp * 100;
|
}
|
else
|
{
|
cSleep.tv_nsec = 0;
|
}
|
|
nanosleep(&cSleep, 0);
|
return ;
|
}
|
|
#endif
|
