kqueue timer

kqueue_socket.c

@@ -0,0 +1,86 @@
+#include <sys/event.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/time.h>
+
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <netdb.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+
+struct inf_kevent {
+    uintptr_t ident;
+    short filter;
+    u_short flags;
+    u_int fflags;
+    int64_t data;
+    void *udata;
+    u_int64_t ext[4];
+};
+
+struct addrinfo *add;
+struct addrinfo hints;
+
+void inf_info(const char *s);
+
+int main(void) {
+    struct kevent event;
+    struct kevent change;
+    pid_t pid;
+    int kq, nev;
+
+    printf("\n");
+    printf("---------------------------------------\n");
+    printf("Stupid struct\n");
+    printf("---------------------------------------\n");
+    printf("\n");
+
+
+    if ((kq = kqueue()) == -1){
+        inf_info("kqueue()");
+    }
+
+    EV_SET(&change, 1, EVFILT_TIMER, EV_ADD | EV_ENABLE, 0, 2000, 0);
+
+    for (;;) {
+
+        nev = kevent(kq, &change, 1, &event, 1, NULL);
+
+        printf("--> kq %d\n", kq);
+        printf("--> pid %d\n", pid);
+
+        if (nev < 0){
+            inf_info("kevent()");
+        }
+
+        else if (nev > 0) {
+
+            if (event.flags & EV_ERROR) {
+                fprintf(stderr, "EV_ERROR...");
+                exit(EXIT_FAILURE);
+            }
+
+            if ((pid = fork()) < 0 ) {
+                fprintf(stderr, "EV_ERROR...");
+                exit(EXIT_FAILURE);
+            }
+
+            else if (pid == 0) {
+                if (execlp("date", "date", (char *)0) < 0)
+                    inf_info("execplp()");
+            }
+
+        }
+    }
+    close(kq);
+}
+
+void inf_info(const char *s)
+{
+    perror(s);
+    exit(EXIT_FAILURE);
+}
+