Pinkbyte/yasnd
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implement IPC messaging with queue loop

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This commit is contained in:
Sergey Popov
2011-12-14 17:52:13 +04:00
parent 1338bd660b
commit 16d950f98d
4 changed files with 131 additions and 17 deletions
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36
yasnd.c
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@ -8,7 +8,6 @@
#include <errno.h>
#include <unistd.h>
#include <syslog.h>
#include <signal.h>
#include <confuse.h>
#include "yasnd.h"
@ -16,6 +15,7 @@
cfg_t *cfg; // pointer to configuration structure
host_decl* hosts=NULL; // structure with hosts' definitions
int hosts_count=0; // count of hosts
int qid=-1; // IPC queue id
int debug_flag=0;
bool sms_send_enable=false; // send or not send alerts via SMS
char* phone_device=NULL; // phone device for gammu, for example: "/dev/ttyACM0"
@ -109,7 +109,6 @@ void init()
}
// initialize gammu structures
gammu_init();
}
void check_host(int num,host_decl* host)
@ -121,6 +120,10 @@ void check_host(int num,host_decl* host)
}
// If pid == 0, then we are in the child
if (pid == 0) {
// Set default signal handlers
signal(SIGTERM, SIG_DFL);
signal(SIGHUP, SIG_DFL);
//
char tmp[50];
sprintf(tmp, "Pinging host %s", host->hostname);
log_debug(tmp,DEBUG_BASE);
@ -205,6 +208,10 @@ void signal_handler(int signum)
{
void free_resources()
{
// Stop IPC loop and remove IPC queue
kill(ipc_clone_pid,SIGTERM);
waitpid(ipc_clone_pid,NULL,__WCLONE);
remove_queue(qid);
// free config structure
cfg_free(cfg);
// free gammu structure
@ -224,6 +231,8 @@ void signal_handler(int signum)
// free all resources
free_resources();
// Init IPC loop again
ipc_init();
// run init again
init();
// sleep 5 seconds and unlock Main Loop
@ -234,8 +243,13 @@ void signal_handler(int signum)
if (signum==SIGTERM)
{
log_event("SIGTERM captured, daemon stopping");
// close log decriptor
closelog();
free_resources(); // free all other resources
// free resources
free_resources();
// remove IPC message queue
remove_queue(qid);
//
exit(EXIT_SUCCESS);
}
}
@ -278,21 +292,25 @@ int main(void) {
close(STDOUT_FILENO);
close(STDERR_FILENO);
// Set signal handlers
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
// initialize IPC queue and create process
// that will watch for new messages in it
ipc_init();
// Init apropriate structures
init();
// Set signal handlers
signal(SIGTERM, signal_handler);
signal(SIGHUP, signal_handler);
/* The Main Loop */
while (1) {
if (!loop_locked)
{
loop_function();
// sleep(60); /* wait 60 seconds */
log_event("Exiting");
exit(EXIT_SUCCESS);
sleep(60); /* wait 60 seconds */
// log_event("Exiting");
// exit(EXIT_SUCCESS);
}
else
{