signals.h

#ifndef _CRTX_SIGNALS_H
#define _CRTX_SIGNALS_H
 
#ifdef __cplusplus
extern "C" {
#endif
 
/*
 * Mario Kicherer (dev@kicherer.org) 2016
 *
 */
 
#include <signal.h>
#include <sys/types.h>
 
#include "core.h"
#include "pipe.h"
 
#define CRTX_SIGNAL_DEFAULT 0
#define CRTX_SIGNAL_SIGACTION 1
#define CRTX_SIGNAL_SIGNALFD 2
#define CRTX_SIGNAL_SELFPIPE 3
 
struct crtx_signal {
    int signum;
    char *name;
    char *etype;
    // struct crtx_listener_base *lstnr;
    struct crtx_dll *lstnrs;
    struct sigaction sa;
};
 
struct crtx_signals_listener {
    struct crtx_listener_base base;
    
    // int *signals; // { SIGINT, ..., 0 }
    struct crtx_signal *signals;
    unsigned int n_signals;
    
    char type;
    int fd;
    
    void (*signal_handler)(int sig_num);
    
    struct crtx_pipe_listener pipe_lstnr;
    struct crtx_signals_listener *sub_lstnr;
};
 
int crtx_signals_handle_std_signals(struct crtx_signals_listener **signal_lstnr);
 
typedef void (*sigchld_cb)(pid_t pid, int status, void *userdata);
void *crtx_signals_add_child_handler(sigchld_cb cb, void *userdata);
int crtx_signals_rem_child_handler(void *sigchld_cb);
 
struct crtx_signal *crtx_get_signal_info(int signum);
 
struct crtx_listener_base *crtx_setup_signals_listener(void *options);
CRTX_DECLARE_ALLOC_FUNCTION(signals)
 
void crtx_signals_init();
void crtx_signals_finish();
 
#ifdef __cplusplus
}
#endif
 
#endif