| commit | author | age | ||
| d6b4a7 | 1 | /******************************************************************************** |
| G | 2 | * Copyright: (C) 2020 LingYun IoT System Studio |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * Filename: util_proc.h | |
| 6 | * Description: This head file is for Linux process/thread API | |
| 7 | * | |
| 8 | * Version: 1.0.0(7/06/2012~) | |
| 9 | * Author: Guo Wenxue <guowenxue@gmail.com> | |
| 10 | * ChangeLog: 1, Release initial version on "7/06/2012 09:21:33 PM" | |
| 11 | * | |
| 12 | ********************************************************************************/ | |
| 13 | ||
| 14 | #ifndef __UTIL_PROC_H_ | |
| 15 | #define __UTIL_PROC_H_ | |
| 16 | ||
| 17 | #include <signal.h> | |
| 18 | #include <time.h> | |
| 19 | ||
| 20 | #define PID_ASCII_SIZE 11 | |
| 21 | ||
| 22 | typedef struct proc_signal_s | |
| 23 | { | |
| 24 | int signal; | |
| 25 | unsigned stop; /* 0: Not term 1: Stop */ | |
| 26 | } proc_signal_t; | |
| 27 | ||
| 28 | typedef void *(* thread_body_t) (void *thread_arg); | |
| 29 | ||
| 30 | extern proc_signal_t g_signal; | |
| 31 | ||
| 32 | /* install default signal process functions */ | |
| 33 | extern void install_default_signal(void); | |
| 34 | ||
| 35 | /* excute a linux command by system() */ | |
| 36 | extern void exec_system_cmd(const char *format, ...); | |
| 37 | ||
| 38 | /* check program already running or not, if not then run it and record pid into $pidfile */ | |
| 39 | extern int check_set_program_running(int daemon, char *pidfile); | |
| 40 | ||
| 41 | /* check program already running or not from $pid_file */ | |
| 42 | extern int check_daemon_running(const char *pid_file); | |
| 43 | ||
| 44 | /* set program daemon running and record pid in $pid_file */ | |
| 45 | extern int set_daemon_running(const char *pid_file); | |
| 46 | ||
| 47 | /* record proces ID into $pid_file */ | |
| 48 | extern int record_daemon_pid(const char *pid_file); | |
| 49 | ||
| 50 | /* stop program running from $pid_file */ | |
| 51 | extern int stop_daemon_running(const char *pid_file); | |
| 52 | ||
| 53 | /* my implementation for set program running in daemon */ | |
| 54 | extern void daemonize(int nochdir, int noclose); | |
| 55 | ||
| 56 | /* start a new thread to run $thread_workbody point function */ | |
| 57 | extern int thread_start(pthread_t *thread_id, thread_body_t thread_workbody, void *thread_arg); | |
| 58 | ||
| 59 | /* +---------------------+ | |
| 60 | * | Low level API | | |
| 61 | * +---------------------+*/ | |
| 62 | ||
| 63 | /* get daemon process ID from $pid_file */ | |
| 64 | extern pid_t get_daemon_pid(const char *pid_file); | |
| 65 | ||
| 66 | /* +------------------------+ | |
| 67 | * | inline functions API | | |
| 68 | * +------------------------+*/ | |
| 69 | static inline void msleep(unsigned long ms) | |
| 70 | { | |
| 71 | struct timespec cSleep; | |
| 72 | unsigned long ulTmp; | |
| 73 | ||
| 74 | cSleep.tv_sec = ms / 1000; | |
| 75 | if (cSleep.tv_sec == 0) | |
| 76 | { | |
| 77 | ulTmp = ms * 10000; | |
| 78 | cSleep.tv_nsec = ulTmp * 100; | |
| 79 | } | |
| 80 | else | |
| 81 | { | |
| 82 | cSleep.tv_nsec = 0; | |
| 83 | } | |
| 84 | ||
| 85 | nanosleep(&cSleep, 0); | |
| 86 | return ; | |
| 87 | } | |
| 88 | ||
| 89 | #endif | |
