102 строки
2.2 KiB
C
102 строки
2.2 KiB
C
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#include <event2/event.h>
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#include <event2/event_struct.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <stdbool.h>
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#define SIGPRI 0
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#define TERMPRI 1
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static struct event_base *base;
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static bool run=true;
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static int loops=0;
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static bool again=false;
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static struct event ev2, ev3;
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static void
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die(const char *msg)
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{
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fprintf(stderr, "%s\n", msg);
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fflush(stderr);
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exit(1);
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}
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static void
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cbfunc2(evutil_socket_t fd, short what, void *arg)
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{
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fprintf(stderr, "CAUGHT EVENT 2\n");
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fflush(stderr);
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#if 0
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event_base_loopbreak(base);
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#endif
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run = false;
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}
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static void
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cbfunc1(evutil_socket_t fd, short what, void *arg)
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{
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if (again) {
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fprintf(stderr, "CYCLING BACK THRU EVENT 1\n");
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return;
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}
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fprintf(stderr, "CAUGHT EVENT 1\n");
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fflush(stderr);
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again = true;
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if (event_assign(&ev2, base, -1, EV_WRITE, cbfunc1, NULL) < 0)
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die("event_assign_2");
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if (event_priority_set(&ev2, 4) < 0)
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die("event_priority_set2");
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event_active(&ev2, EV_WRITE, 1);
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fprintf(stderr, "CB1: FIRST EVENT DEFINED\n");
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fflush(stderr);
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if (event_assign(&ev3, base, -1, EV_WRITE, cbfunc2, NULL) < 0)
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die("event_assign_3");
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if (event_priority_set(&ev3, 0) < 0)
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die("event_priority_set3");
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event_active(&ev3, EV_WRITE, 1);
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fprintf(stderr, "CB2: SECOND EVENT DEFINED\n");
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fflush(stderr);
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}
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int
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main(int argc, char **argv)
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{
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struct event ev1;
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event_enable_debug_mode();
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fprintf(stderr, "Libevent %s\n", event_get_version());
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fflush(stderr);
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if (!(base = event_base_new()))
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die("event_base_new");
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if (event_base_priority_init(base, 8) < 0)
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die("event_base_priority_init");
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if (event_assign(&ev1, base, -1, EV_WRITE, cbfunc1, NULL) < 0)
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die("event_assign_1");
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if (event_priority_set(&ev1, 4) < 0)
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die("event_priority_set");
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event_active(&ev1, EV_WRITE, 1);
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fprintf(stderr, "FIRST EVENT DEFINED\n");
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fflush(stderr);
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/* event_dispatch(base); */
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while (run) {
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event_base_loop(base, EVLOOP_ONCE);
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}
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fprintf(stderr, "EXITED LOOP - FREEING BASE\n");
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fflush(stderr);
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event_base_free(base);
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return 0;
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}
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