main.c

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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
 
#include <event2/event.h>
 
#include <amxc/amxc.h>
 
#include <amxp/amxp_signal.h>
#include <amxp/variant_siginfo.h>
#include <amxp/amxp_syssig.h>
#include <amxp/amxp_slot.h>
 
#define UNUSED __attribute__((unused))
 
static struct event_base* base = NULL;
 
static void signal_cb(UNUSED evutil_socket_t fd,
                      UNUSED short event,
                      UNUSED void* arg) {
    amxp_syssig_read();
}
 
static void slot_sigint(UNUSED const char* const sig_name,
                        UNUSED const amxc_var_t* const data,
                        UNUSED void* priv) {
    printf("Signal SIGINT recieved\n\n");
}
 
static void slot_sigterm(UNUSED const char* const sig_name,
                         UNUSED const amxc_var_t* const data,
                         UNUSED void* priv) {
    printf("Signal SIGTERM recieved - stop eventloop\n\n");
    event_base_loopbreak(base);
}
 
static void slot_system_signal(const char* const sig_name,
                               const amxc_var_t* const data,
                               UNUSED void* priv) {
    const amxp_siginfo_t* siginfo = amxc_var_constcast(amxp_siginfo_t, data);
    printf("Signal recieved [%s]\n", sig_name);
    printf("\tssi_signo         = %u\n", siginfo->ssi_signo);
    printf("\tssi_errno         = %d\n", siginfo->ssi_errno);
    printf("\tssi_code          = %d\n", siginfo->ssi_code);
    printf("\tssi_pid           = %u\n", siginfo->ssi_pid);
    printf("\tssi_uid           = %u\n", siginfo->ssi_uid);
    printf("\tssi_fd            = %d\n", siginfo->ssi_fd);
    printf("\tssi_tid           = %u\n", siginfo->ssi_tid);
    printf("\tssi_band          = %u\n", siginfo->ssi_band);
    printf("\tssi_overrun       = %u\n", siginfo->ssi_overrun);
    printf("\tssi_trapno        = %u\n", siginfo->ssi_trapno);
    printf("\tssi_status        = %u\n", siginfo->ssi_status);
    printf("\tssi_int           = %u\n", siginfo->ssi_int);
    printf("\n");
}
 
int main(void) {
    int ret = 0;
    int sig_fd = -1;
    struct event* sig_event = NULL;
 
    base = event_base_new();
    if(base == NULL) {
        exit(1);
    }
 
    sig_fd = amxp_syssig_get_fd();
    sig_event = event_new(base, sig_fd, EV_READ | EV_PERSIST, signal_cb, NULL);
 
    amxp_syssig_enable(SIGINT, true);
    amxp_syssig_enable(SIGTERM, true);
 
    amxp_slot_connect(NULL, strsignal(SIGINT), NULL, slot_system_signal, NULL);
    amxp_slot_connect(NULL, strsignal(SIGTERM), NULL, slot_system_signal, NULL);
 
    amxp_slot_connect(NULL, strsignal(SIGINT), NULL, slot_sigint, NULL);
    amxp_slot_connect(NULL, strsignal(SIGTERM), NULL, slot_sigterm, NULL);
 
    event_add(sig_event, NULL);
 
    event_base_dispatch(base);
 
    event_del(sig_event);
    event_free(sig_event);
    event_base_free(base);
 
    return ret;
}