+++ /dev/null
-/*
- * Event loop - empty template (basic structure, but no OS specific operations)
- * Copyright (c) 2002-2005, Jouni Malinen <j@w1.fi>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "eloop.h"
-
-
-struct eloop_sock {
- int sock;
- void *eloop_data;
- void *user_data;
- void (*handler)(int sock, void *eloop_ctx, void *sock_ctx);
-};
-
-struct eloop_timeout {
- struct os_time time;
- void *eloop_data;
- void *user_data;
- void (*handler)(void *eloop_ctx, void *sock_ctx);
- struct eloop_timeout *next;
-};
-
-struct eloop_signal {
- int sig;
- void *user_data;
- void (*handler)(int sig, void *eloop_ctx, void *signal_ctx);
- int signaled;
-};
-
-struct eloop_data {
- int max_sock, reader_count;
- struct eloop_sock *readers;
-
- struct eloop_timeout *timeout;
-
- int signal_count;
- struct eloop_signal *signals;
- int signaled;
- int pending_terminate;
-
- int terminate;
- int reader_table_changed;
-};
-
-static struct eloop_data eloop;
-
-
-int eloop_init(void)
-{
- memset(&eloop, 0, sizeof(eloop));
- return 0;
-}
-
-
-int eloop_register_read_sock(int sock,
- void (*handler)(int sock, void *eloop_ctx,
- void *sock_ctx),
- void *eloop_data, void *user_data)
-{
- struct eloop_sock *tmp;
-
- tmp = (struct eloop_sock *)
- realloc(eloop.readers,
- (eloop.reader_count + 1) * sizeof(struct eloop_sock));
- if (tmp == NULL)
- return -1;
-
- tmp[eloop.reader_count].sock = sock;
- tmp[eloop.reader_count].eloop_data = eloop_data;
- tmp[eloop.reader_count].user_data = user_data;
- tmp[eloop.reader_count].handler = handler;
- eloop.reader_count++;
- eloop.readers = tmp;
- if (sock > eloop.max_sock)
- eloop.max_sock = sock;
- eloop.reader_table_changed = 1;
-
- return 0;
-}
-
-
-void eloop_unregister_read_sock(int sock)
-{
- int i;
-
- if (eloop.readers == NULL || eloop.reader_count == 0)
- return;
-
- for (i = 0; i < eloop.reader_count; i++) {
- if (eloop.readers[i].sock == sock)
- break;
- }
- if (i == eloop.reader_count)
- return;
- if (i != eloop.reader_count - 1) {
- memmove(&eloop.readers[i], &eloop.readers[i + 1],
- (eloop.reader_count - i - 1) *
- sizeof(struct eloop_sock));
- }
- eloop.reader_count--;
- eloop.reader_table_changed = 1;
-}
-
-
-int eloop_register_timeout(unsigned int secs, unsigned int usecs,
- void (*handler)(void *eloop_ctx, void *timeout_ctx),
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *timeout, *tmp, *prev;
-
- timeout = (struct eloop_timeout *) malloc(sizeof(*timeout));
- if (timeout == NULL)
- return -1;
- os_get_time(&timeout->time);
- timeout->time.sec += secs;
- timeout->time.usec += usecs;
- while (timeout->time.usec >= 1000000) {
- timeout->time.sec++;
- timeout->time.usec -= 1000000;
- }
- timeout->eloop_data = eloop_data;
- timeout->user_data = user_data;
- timeout->handler = handler;
- timeout->next = NULL;
-
- if (eloop.timeout == NULL) {
- eloop.timeout = timeout;
- return 0;
- }
-
- prev = NULL;
- tmp = eloop.timeout;
- while (tmp != NULL) {
- if (os_time_before(&timeout->time, &tmp->time))
- break;
- prev = tmp;
- tmp = tmp->next;
- }
-
- if (prev == NULL) {
- timeout->next = eloop.timeout;
- eloop.timeout = timeout;
- } else {
- timeout->next = prev->next;
- prev->next = timeout;
- }
-
- return 0;
-}
-
-
-int eloop_cancel_timeout(void (*handler)(void *eloop_ctx, void *sock_ctx),
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *timeout, *prev, *next;
- int removed = 0;
-
- prev = NULL;
- timeout = eloop.timeout;
- while (timeout != NULL) {
- next = timeout->next;
-
- if (timeout->handler == handler &&
- (timeout->eloop_data == eloop_data ||
- eloop_data == ELOOP_ALL_CTX) &&
- (timeout->user_data == user_data ||
- user_data == ELOOP_ALL_CTX)) {
- if (prev == NULL)
- eloop.timeout = next;
- else
- prev->next = next;
- free(timeout);
- removed++;
- } else
- prev = timeout;
-
- timeout = next;
- }
-
- return removed;
-}
-
-
-int eloop_is_timeout_registered(void (*handler)(void *eloop_ctx,
- void *timeout_ctx),
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *tmp;
-
- tmp = eloop.timeout;
- while (tmp != NULL) {
- if (tmp->handler == handler &&
- tmp->eloop_data == eloop_data &&
- tmp->user_data == user_data)
- return 1;
-
- tmp = tmp->next;
- }
-
- return 0;
-}
-
-
-/* TODO: replace with suitable signal handler */
-#if 0
-static void eloop_handle_signal(int sig)
-{
- int i;
-
- eloop.signaled++;
- for (i = 0; i < eloop.signal_count; i++) {
- if (eloop.signals[i].sig == sig) {
- eloop.signals[i].signaled++;
- break;
- }
- }
-}
-#endif
-
-
-static void eloop_process_pending_signals(void)
-{
- int i;
-
- if (eloop.signaled == 0)
- return;
- eloop.signaled = 0;
-
- if (eloop.pending_terminate) {
- eloop.pending_terminate = 0;
- }
-
- for (i = 0; i < eloop.signal_count; i++) {
- if (eloop.signals[i].signaled) {
- eloop.signals[i].signaled = 0;
- eloop.signals[i].handler(eloop.signals[i].sig,
- eloop.user_data,
- eloop.signals[i].user_data);
- }
- }
-}
-
-
-int eloop_register_signal(int sig,
- void (*handler)(int sig, void *eloop_ctx,
- void *signal_ctx),
- void *user_data)
-{
- struct eloop_signal *tmp;
-
- tmp = (struct eloop_signal *)
- realloc(eloop.signals,
- (eloop.signal_count + 1) *
- sizeof(struct eloop_signal));
- if (tmp == NULL)
- return -1;
-
- tmp[eloop.signal_count].sig = sig;
- tmp[eloop.signal_count].user_data = user_data;
- tmp[eloop.signal_count].handler = handler;
- tmp[eloop.signal_count].signaled = 0;
- eloop.signal_count++;
- eloop.signals = tmp;
-
- /* TODO: register signal handler */
-
- return 0;
-}
-
-
-int eloop_register_signal_terminate(void (*handler)(int sig, void *eloop_ctx,
- void *signal_ctx),
- void *user_data)
-{
-#if 0
- /* TODO: for example */
- int ret = eloop_register_signal(SIGINT, handler, user_data);
- if (ret == 0)
- ret = eloop_register_signal(SIGTERM, handler, user_data);
- return ret;
-#endif
- return 0;
-}
-
-
-int eloop_register_signal_reconfig(void (*handler)(int sig, void *eloop_ctx,
- void *signal_ctx),
- void *user_data)
-{
-#if 0
- /* TODO: for example */
- return eloop_register_signal(SIGHUP, handler, user_data);
-#endif
- return 0;
-}
-
-
-void eloop_run(void)
-{
- int i;
- struct os_time tv, now;
-
- while (!eloop.terminate &&
- (eloop.timeout || eloop.reader_count > 0)) {
- if (eloop.timeout) {
- os_get_time(&now);
- if (os_time_before(&now, &eloop.timeout->time))
- os_time_sub(&eloop.timeout->time, &now, &tv);
- else
- tv.sec = tv.usec = 0;
- }
-
- /*
- * TODO: wait for any event (read socket ready, timeout (tv),
- * signal
- */
- os_sleep(1, 0); /* just a dummy wait for testing */
-
- eloop_process_pending_signals();
-
- /* check if some registered timeouts have occurred */
- if (eloop.timeout) {
- struct eloop_timeout *tmp;
-
- os_get_time(&now);
- if (!os_time_before(&now, &eloop.timeout->time)) {
- tmp = eloop.timeout;
- eloop.timeout = eloop.timeout->next;
- tmp->handler(tmp->eloop_data,
- tmp->user_data);
- free(tmp);
- }
-
- }
-
- eloop.reader_table_changed = 0;
- for (i = 0; i < eloop.reader_count; i++) {
- /*
- * TODO: call each handler that has pending data to
- * read
- */
- if (0 /* TODO: eloop.readers[i].sock ready */) {
- eloop.readers[i].handler(
- eloop.readers[i].sock,
- eloop.readers[i].eloop_data,
- eloop.readers[i].user_data);
- if (eloop.reader_table_changed)
- break;
- }
- }
- }
-}
-
-
-void eloop_terminate(void)
-{
- eloop.terminate = 1;
-}
-
-
-void eloop_destroy(void)
-{
- struct eloop_timeout *timeout, *prev;
-
- timeout = eloop.timeout;
- while (timeout != NULL) {
- prev = timeout;
- timeout = timeout->next;
- free(prev);
- }
- free(eloop.readers);
- free(eloop.signals);
-}
-
-
-int eloop_terminated(void)
-{
- return eloop.terminate;
-}
-
-
-void eloop_wait_for_read_sock(int sock)
-{
- /*
- * TODO: wait for the file descriptor to have something available for
- * reading
- */
-}
projects / mech_eap.git / blobdiff