-#ifndef HAVE_MINGW
-static int signal_compare(const signal_t *a, const signal_t *b) {
- return a->signum - b->signum;
-}
-
-static io_t signalio;
-static int pipefd[2] = {-1, -1};
-static splay_tree_t signal_tree = {.compare = (splay_compare_t)signal_compare};
-
-static void signal_handler(int signum) {
- unsigned char num = signum;
- write(pipefd[1], &num, 1);
-}
-
-static void signalio_handler(void *data, int flags) {
- unsigned char signum;
- if(read(pipefd[0], &signum, 1) != 1)
- return;
-
- signal_t *sig = splay_search(&signal_tree, &((signal_t){.signum = signum}));
- if(sig)
- sig->cb(sig->data);
-}
-
-static void pipe_init(void) {
- if(!pipe(pipefd))
- io_add(&signalio, signalio_handler, NULL, pipefd[0], IO_READ);
-}
-
-void signal_add(signal_t *sig, signal_cb_t cb, void *data, int signum) {
- if(sig->cb)
- return;
-
- sig->cb = cb;
- sig->data = data;
- sig->signum = signum;
- sig->node.data = sig;
-
- if(pipefd[0] == -1)
- pipe_init();
-
- signal(sig->signum, signal_handler);
-
- if(!splay_insert_node(&signal_tree, &sig->node))
- abort();
-}
-
-void signal_del(signal_t *sig) {
- if(!sig->cb)
- return;
-
- signal(sig->signum, SIG_DFL);
-
- splay_unlink_node(&signal_tree, &sig->node);
- sig->cb = NULL;
-}
-#endif
-
-bool event_loop(void) {
- running = true;