+++ /dev/null
-/*
- * Event loop - empty template (basic structure, but no OS specific operations)
- * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "list.h"
-#include "eloop.h"
-
-
-struct eloop_sock {
- int sock;
- void *eloop_data;
- void *user_data;
- eloop_sock_handler handler;
-};
-
-struct eloop_timeout {
- struct dl_list list;
- struct os_time time;
- void *eloop_data;
- void *user_data;
- eloop_timeout_handler handler;
-};
-
-struct eloop_signal {
- int sig;
- void *user_data;
- eloop_signal_handler handler;
- int signaled;
-};
-
-struct eloop_data {
- int max_sock, reader_count;
- struct eloop_sock *readers;
-
- struct dl_list 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)
-{
- os_memset(&eloop, 0, sizeof(eloop));
- dl_list_init(&eloop.timeout);
- return 0;
-}
-
-
-int eloop_register_read_sock(int sock, eloop_sock_handler handler,
- void *eloop_data, void *user_data)
-{
- struct eloop_sock *tmp;
-
- tmp = os_realloc_array(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) {
- os_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,
- eloop_timeout_handler handler,
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *timeout, *tmp;
- os_time_t now_sec;
-
- timeout = os_zalloc(sizeof(*timeout));
- if (timeout == NULL)
- return -1;
- if (os_get_time(&timeout->time) < 0) {
- os_free(timeout);
- return -1;
- }
- now_sec = timeout->time.sec;
- timeout->time.sec += secs;
- if (timeout->time.sec < now_sec) {
- /*
- * Integer overflow - assume long enough timeout to be assumed
- * to be infinite, i.e., the timeout would never happen.
- */
- wpa_printf(MSG_DEBUG, "ELOOP: Too long timeout (secs=%u) to "
- "ever happen - ignore it", secs);
- os_free(timeout);
- return 0;
- }
- 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;
-
- /* Maintain timeouts in order of increasing time */
- dl_list_for_each(tmp, &eloop.timeout, struct eloop_timeout, list) {
- if (os_time_before(&timeout->time, &tmp->time)) {
- dl_list_add(tmp->list.prev, &timeout->list);
- return 0;
- }
- }
- dl_list_add_tail(&eloop.timeout, &timeout->list);
-
- return 0;
-}
-
-
-static void eloop_remove_timeout(struct eloop_timeout *timeout)
-{
- dl_list_del(&timeout->list);
- os_free(timeout);
-}
-
-
-int eloop_cancel_timeout(eloop_timeout_handler handler,
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *timeout, *prev;
- int removed = 0;
-
- dl_list_for_each_safe(timeout, prev, &eloop.timeout,
- struct eloop_timeout, list) {
- if (timeout->handler == handler &&
- (timeout->eloop_data == eloop_data ||
- eloop_data == ELOOP_ALL_CTX) &&
- (timeout->user_data == user_data ||
- user_data == ELOOP_ALL_CTX)) {
- eloop_remove_timeout(timeout);
- removed++;
- }
- }
-
- return removed;
-}
-
-
-int eloop_cancel_timeout_one(eloop_timeout_handler handler,
- void *eloop_data, void *user_data,
- struct os_time *remaining)
-{
- struct eloop_timeout *timeout, *prev;
- int removed = 0;
- struct os_time now;
-
- os_get_time(&now);
- remaining->sec = remaining->usec = 0;
-
- dl_list_for_each_safe(timeout, prev, &eloop.timeout,
- struct eloop_timeout, list) {
- if (timeout->handler == handler &&
- (timeout->eloop_data == eloop_data) &&
- (timeout->user_data == user_data)) {
- removed = 1;
- if (os_time_before(&now, &timeout->time))
- os_time_sub(&timeout->time, &now, remaining);
- eloop_remove_timeout(timeout);
- break;
- }
- }
- return removed;
-}
-
-
-int eloop_is_timeout_registered(eloop_timeout_handler handler,
- void *eloop_data, void *user_data)
-{
- struct eloop_timeout *tmp;
-
- dl_list_for_each(tmp, &eloop.timeout, struct eloop_timeout, list) {
- if (tmp->handler == handler &&
- tmp->eloop_data == eloop_data &&
- tmp->user_data == user_data)
- return 1;
- }
-
- 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.signals[i].user_data);
- }
- }
-}
-
-
-int eloop_register_signal(int sig, eloop_signal_handler handler,
- void *user_data)
-{
- struct eloop_signal *tmp;
-
- tmp = os_realloc_array(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(eloop_signal_handler handler,
- 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(eloop_signal_handler handler,
- 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 &&
- (!dl_list_empty(&eloop.timeout) || eloop.reader_count > 0)) {
- struct eloop_timeout *timeout;
- timeout = dl_list_first(&eloop.timeout, struct eloop_timeout,
- list);
- if (timeout) {
- os_get_time(&now);
- if (os_time_before(&now, &timeout->time))
- os_time_sub(&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 */
- timeout = dl_list_first(&eloop.timeout, struct eloop_timeout,
- list);
- if (timeout) {
- os_get_time(&now);
- if (!os_time_before(&now, &timeout->time)) {
- void *eloop_data = timeout->eloop_data;
- void *user_data = timeout->user_data;
- eloop_timeout_handler handler =
- timeout->handler;
- eloop_remove_timeout(timeout);
- handler(eloop_data, user_data);
- }
-
- }
-
- 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;
-
- dl_list_for_each_safe(timeout, prev, &eloop.timeout,
- struct eloop_timeout, list) {
- eloop_remove_timeout(timeout);
- }
- os_free(eloop.readers);
- os_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 / commitdiff