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authorJouni Malinen <j@w1.fi>2008-02-28 01:34:43 (GMT)
committerJouni Malinen <jm@jm.kir.nu>2008-02-28 01:34:43 (GMT)
commit6fc6879bd55a394f807cbbe927df736c190cb8ab (patch)
treecdf50da0c58f21510a808d53502a060d911ff243 /src/utils/eloop_win.c
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Re-initialize hostapd/wpa_supplicant git repository based on 0.6.3 release
Diffstat (limited to 'src/utils/eloop_win.c')
-rw-r--r--src/utils/eloop_win.c604
1 files changed, 604 insertions, 0 deletions
diff --git a/src/utils/eloop_win.c b/src/utils/eloop_win.c
new file mode 100644
index 0000000..73f0eaf
--- /dev/null
+++ b/src/utils/eloop_win.c
@@ -0,0 +1,604 @@
+/*
+ * Event loop based on Windows events and WaitForMultipleObjects
+ * Copyright (c) 2002-2006, 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 <winsock2.h>
+
+#include "common.h"
+#include "eloop.h"
+
+
+struct eloop_sock {
+ int sock;
+ void *eloop_data;
+ void *user_data;
+ eloop_sock_handler handler;
+ WSAEVENT event;
+};
+
+struct eloop_event {
+ void *eloop_data;
+ void *user_data;
+ eloop_event_handler handler;
+ HANDLE event;
+};
+
+struct eloop_timeout {
+ struct os_time time;
+ void *eloop_data;
+ void *user_data;
+ eloop_timeout_handler handler;
+ struct eloop_timeout *next;
+};
+
+struct eloop_signal {
+ int sig;
+ void *user_data;
+ eloop_signal_handler handler;
+ int signaled;
+};
+
+struct eloop_data {
+ void *user_data;
+
+ int max_sock;
+ size_t reader_count;
+ struct eloop_sock *readers;
+
+ size_t event_count;
+ struct eloop_event *events;
+
+ struct eloop_timeout *timeout;
+
+ int signal_count;
+ struct eloop_signal *signals;
+ int signaled;
+ int pending_terminate;
+
+ int terminate;
+ int reader_table_changed;
+
+ struct eloop_signal term_signal;
+ HANDLE term_event;
+
+ HANDLE *handles;
+ size_t num_handles;
+};
+
+static struct eloop_data eloop;
+
+
+int eloop_init(void *user_data)
+{
+ os_memset(&eloop, 0, sizeof(eloop));
+ eloop.user_data = user_data;
+ eloop.num_handles = 1;
+ eloop.handles = os_malloc(eloop.num_handles *
+ sizeof(eloop.handles[0]));
+ if (eloop.handles == NULL)
+ return -1;
+
+ eloop.term_event = CreateEvent(NULL, FALSE, FALSE, NULL);
+ if (eloop.term_event == NULL) {
+ printf("CreateEvent() failed: %d\n",
+ (int) GetLastError());
+ os_free(eloop.handles);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+static int eloop_prepare_handles(void)
+{
+ HANDLE *n;
+
+ if (eloop.num_handles > eloop.reader_count + eloop.event_count + 8)
+ return 0;
+ n = os_realloc(eloop.handles,
+ eloop.num_handles * 2 * sizeof(eloop.handles[0]));
+ if (n == NULL)
+ return -1;
+ eloop.handles = n;
+ eloop.num_handles *= 2;
+ return 0;
+}
+
+
+int eloop_register_read_sock(int sock, eloop_sock_handler handler,
+ void *eloop_data, void *user_data)
+{
+ WSAEVENT event;
+ struct eloop_sock *tmp;
+
+ if (eloop_prepare_handles())
+ return -1;
+
+ event = WSACreateEvent();
+ if (event == WSA_INVALID_EVENT) {
+ printf("WSACreateEvent() failed: %d\n", WSAGetLastError());
+ return -1;
+ }
+
+ if (WSAEventSelect(sock, event, FD_READ)) {
+ printf("WSAEventSelect() failed: %d\n", WSAGetLastError());
+ WSACloseEvent(event);
+ return -1;
+ }
+ tmp = os_realloc(eloop.readers,
+ (eloop.reader_count + 1) * sizeof(struct eloop_sock));
+ if (tmp == NULL) {
+ WSAEventSelect(sock, event, 0);
+ WSACloseEvent(event);
+ 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;
+ tmp[eloop.reader_count].event = event;
+ 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)
+{
+ size_t 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;
+
+ WSAEventSelect(eloop.readers[i].sock, eloop.readers[i].event, 0);
+ WSACloseEvent(eloop.readers[i].event);
+
+ 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_event(void *event, size_t event_size,
+ eloop_event_handler handler,
+ void *eloop_data, void *user_data)
+{
+ struct eloop_event *tmp;
+ HANDLE h = event;
+
+ if (event_size != sizeof(HANDLE) || h == INVALID_HANDLE_VALUE)
+ return -1;
+
+ if (eloop_prepare_handles())
+ return -1;
+
+ tmp = os_realloc(eloop.events,
+ (eloop.event_count + 1) * sizeof(struct eloop_event));
+ if (tmp == NULL)
+ return -1;
+
+ tmp[eloop.event_count].eloop_data = eloop_data;
+ tmp[eloop.event_count].user_data = user_data;
+ tmp[eloop.event_count].handler = handler;
+ tmp[eloop.event_count].event = h;
+ eloop.event_count++;
+ eloop.events = tmp;
+
+ return 0;
+}
+
+
+void eloop_unregister_event(void *event, size_t event_size)
+{
+ size_t i;
+ HANDLE h = event;
+
+ if (eloop.events == NULL || eloop.event_count == 0 ||
+ event_size != sizeof(HANDLE))
+ return;
+
+ for (i = 0; i < eloop.event_count; i++) {
+ if (eloop.events[i].event == h)
+ break;
+ }
+ if (i == eloop.event_count)
+ return;
+
+ if (i != eloop.event_count - 1) {
+ os_memmove(&eloop.events[i], &eloop.events[i + 1],
+ (eloop.event_count - i - 1) *
+ sizeof(struct eloop_event));
+ }
+ eloop.event_count--;
+}
+
+
+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, *prev;
+
+ timeout = os_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(eloop_timeout_handler handler,
+ 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;
+ os_free(timeout);
+ removed++;
+ } else
+ prev = timeout;
+
+ timeout = next;
+ }
+
+ return removed;
+}
+
+
+/* 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);
+ }
+ }
+
+ if (eloop.term_signal.signaled) {
+ eloop.term_signal.signaled = 0;
+ eloop.term_signal.handler(eloop.term_signal.sig,
+ eloop.user_data,
+ eloop.term_signal.user_data);
+ }
+}
+
+
+int eloop_register_signal(int sig, eloop_signal_handler handler,
+ void *user_data)
+{
+ struct eloop_signal *tmp;
+
+ tmp = os_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;
+}
+
+
+#ifndef _WIN32_WCE
+static BOOL eloop_handle_console_ctrl(DWORD type)
+{
+ switch (type) {
+ case CTRL_C_EVENT:
+ case CTRL_BREAK_EVENT:
+ eloop.signaled++;
+ eloop.term_signal.signaled++;
+ SetEvent(eloop.term_event);
+ return TRUE;
+ default:
+ return FALSE;
+ }
+}
+#endif /* _WIN32_WCE */
+
+
+int eloop_register_signal_terminate(eloop_signal_handler handler,
+ void *user_data)
+{
+#ifndef _WIN32_WCE
+ if (SetConsoleCtrlHandler((PHANDLER_ROUTINE) eloop_handle_console_ctrl,
+ TRUE) == 0) {
+ printf("SetConsoleCtrlHandler() failed: %d\n",
+ (int) GetLastError());
+ return -1;
+ }
+#endif /* _WIN32_WCE */
+
+ eloop.term_signal.handler = handler;
+ eloop.term_signal.user_data = user_data;
+
+ return 0;
+}
+
+
+int eloop_register_signal_reconfig(eloop_signal_handler handler,
+ void *user_data)
+{
+ /* TODO */
+ return 0;
+}
+
+
+void eloop_run(void)
+{
+ struct os_time tv, now;
+ DWORD count, ret, timeout, err;
+ size_t i;
+
+ while (!eloop.terminate &&
+ (eloop.timeout || eloop.reader_count > 0 ||
+ eloop.event_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;
+ }
+
+ count = 0;
+ for (i = 0; i < eloop.event_count; i++)
+ eloop.handles[count++] = eloop.events[i].event;
+
+ for (i = 0; i < eloop.reader_count; i++)
+ eloop.handles[count++] = eloop.readers[i].event;
+
+ if (eloop.term_event)
+ eloop.handles[count++] = eloop.term_event;
+
+ if (eloop.timeout)
+ timeout = tv.sec * 1000 + tv.usec / 1000;
+ else
+ timeout = INFINITE;
+
+ if (count > MAXIMUM_WAIT_OBJECTS) {
+ printf("WaitForMultipleObjects: Too many events: "
+ "%d > %d (ignoring extra events)\n",
+ (int) count, MAXIMUM_WAIT_OBJECTS);
+ count = MAXIMUM_WAIT_OBJECTS;
+ }
+#ifdef _WIN32_WCE
+ ret = WaitForMultipleObjects(count, eloop.handles, FALSE,
+ timeout);
+#else /* _WIN32_WCE */
+ ret = WaitForMultipleObjectsEx(count, eloop.handles, FALSE,
+ timeout, TRUE);
+#endif /* _WIN32_WCE */
+ err = GetLastError();
+
+ 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);
+ os_free(tmp);
+ }
+
+ }
+
+ if (ret == WAIT_FAILED) {
+ printf("WaitForMultipleObjects(count=%d) failed: %d\n",
+ (int) count, (int) err);
+ os_sleep(1, 0);
+ continue;
+ }
+
+#ifndef _WIN32_WCE
+ if (ret == WAIT_IO_COMPLETION)
+ continue;
+#endif /* _WIN32_WCE */
+
+ if (ret == WAIT_TIMEOUT)
+ continue;
+
+ while (ret >= WAIT_OBJECT_0 &&
+ ret < WAIT_OBJECT_0 + eloop.event_count) {
+ eloop.events[ret].handler(
+ eloop.events[ret].eloop_data,
+ eloop.events[ret].user_data);
+ ret = WaitForMultipleObjects(eloop.event_count,
+ eloop.handles, FALSE, 0);
+ }
+
+ eloop.reader_table_changed = 0;
+ for (i = 0; i < eloop.reader_count; i++) {
+ WSANETWORKEVENTS events;
+ if (WSAEnumNetworkEvents(eloop.readers[i].sock,
+ eloop.readers[i].event,
+ &events) == 0 &&
+ (events.lNetworkEvents & FD_READ)) {
+ 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;
+ SetEvent(eloop.term_event);
+}
+
+
+void eloop_destroy(void)
+{
+ struct eloop_timeout *timeout, *prev;
+
+ timeout = eloop.timeout;
+ while (timeout != NULL) {
+ prev = timeout;
+ timeout = timeout->next;
+ os_free(prev);
+ }
+ os_free(eloop.readers);
+ os_free(eloop.signals);
+ if (eloop.term_event)
+ CloseHandle(eloop.term_event);
+ os_free(eloop.handles);
+ eloop.handles = NULL;
+ os_free(eloop.events);
+ eloop.events = NULL;
+}
+
+
+int eloop_terminated(void)
+{
+ return eloop.terminate;
+}
+
+
+void eloop_wait_for_read_sock(int sock)
+{
+ WSAEVENT event;
+
+ event = WSACreateEvent();
+ if (event == WSA_INVALID_EVENT) {
+ printf("WSACreateEvent() failed: %d\n", WSAGetLastError());
+ return;
+ }
+
+ if (WSAEventSelect(sock, event, FD_READ)) {
+ printf("WSAEventSelect() failed: %d\n", WSAGetLastError());
+ WSACloseEvent(event);
+ return ;
+ }
+
+ WaitForSingleObject(event, INFINITE);
+ WSAEventSelect(sock, event, 0);
+ WSACloseEvent(event);
+}
+
+
+void * eloop_get_user_data(void)
+{
+ return eloop.user_data;
+}