/src/FreeRDP/winpr/libwinpr/synch/event.c

Source
/**
 * WinPR: Windows Portable Runtime
 * Synchronization Functions
 *
 * Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
 * Copyright 2017 Armin Novak <armin.novak@thincast.com>
 * Copyright 2017 Thincast Technologies GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <winpr/config.h>

#include <stdio.h>
#include <string.h>
#include <stdlib.h>

#include <winpr/synch.h>

#ifndef _WIN32

#include "synch.h"

#ifdef WINPR_HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef WINPR_HAVE_SYS_EVENTFD_H
#include <sys/eventfd.h>
#endif

#include <fcntl.h>
#include <errno.h>

#include "../handle/handle.h"
#include "../pipe/pipe.h"

#include "../log.h"
#include "event.h"
#define TAG WINPR_TAG("synch.event")

#if defined(WITH_DEBUG_EVENTS)
static wArrayList* global_event_list = NULL;

static void dump_event(WINPR_EVENT* event, size_t index)
{
  char** msg = NULL;
  size_t used = 0;

  WLog_DBG(TAG, "Event handle created still not closed! [%" PRIuz ", %p]", index, event);
  msg = winpr_backtrace_symbols(event->create_stack, &used);

  for (size_t i = 2; i < used; i++)
    WLog_DBG(TAG, "[%" PRIdz "]: %s", i, msg[i]);

  free(msg);
}
#endif /* WITH_DEBUG_EVENTS */

#ifdef WINPR_HAVE_SYS_EVENTFD_H
#if !defined(WITH_EVENTFD_READ_WRITE)
static int eventfd_read(int fd, eventfd_t* value)
{
  return (read(fd, value, sizeof(*value)) == sizeof(*value)) ? 0 : -1;
}

static int eventfd_write(int fd, eventfd_t value)
{
  return (write(fd, &value, sizeof(value)) == sizeof(value)) ? 0 : -1;
}
#endif
#endif

#ifndef WINPR_HAVE_SYS_EVENTFD_H
static BOOL set_non_blocking_fd(int fd)
{
  int flags;
  flags = fcntl(fd, F_GETFL);
  if (flags < 0)
    return FALSE;

  return fcntl(fd, F_SETFL, flags | O_NONBLOCK) >= 0;
}
#endif /* !WINPR_HAVE_SYS_EVENTFD_H */

BOOL winpr_event_init(WINPR_EVENT_IMPL* event)
{
#ifdef WINPR_HAVE_SYS_EVENTFD_H
  event->fds[1] = -1;
  event->fds[0] = eventfd(0, EFD_NONBLOCK);

  return event->fds[0] >= 0;
#else
  if (pipe(event->fds) < 0)
    return FALSE;

  if (!set_non_blocking_fd(event->fds[0]) || !set_non_blocking_fd(event->fds[1]))
    goto out_error;

  return TRUE;

out_error:
  winpr_event_uninit(event);
  return FALSE;
#endif
}

void winpr_event_init_from_fd(WINPR_EVENT_IMPL* event, int fd)
{
  event->fds[0] = fd;
#ifndef WINPR_HAVE_SYS_EVENTFD_H
  event->fds[1] = fd;
#endif
}

BOOL winpr_event_set(WINPR_EVENT_IMPL* event)
{
  int ret = 0;
  do
  {
#ifdef WINPR_HAVE_SYS_EVENTFD_H
    eventfd_t value = 1;
    ret = eventfd_write(event->fds[0], value);
#else
    ret = write(event->fds[1], "-", 1);
#endif
  } while (ret < 0 && errno == EINTR);

  return ret >= 0;
}

BOOL winpr_event_reset(WINPR_EVENT_IMPL* event)
{
  int ret = 0;
  do
  {
    do
    {
#ifdef WINPR_HAVE_SYS_EVENTFD_H
      eventfd_t value = 1;
      ret = eventfd_read(event->fds[0], &value);
#else
      char value;
      ret = read(event->fds[0], &value, 1);
#endif
    } while (ret < 0 && errno == EINTR);
  } while (ret >= 0);

  return (errno == EAGAIN);
}

void winpr_event_uninit(WINPR_EVENT_IMPL* event)
{
  if (event->fds[0] >= 0)
  {
    close(event->fds[0]);
    event->fds[0] = -1;
  }

  if (event->fds[1] >= 0)
  {
    close(event->fds[1]);
    event->fds[1] = -1;
  }
}

static BOOL EventCloseHandle(HANDLE handle);

static BOOL EventIsHandled(HANDLE handle)
{
  return WINPR_HANDLE_IS_HANDLED(handle, HANDLE_TYPE_EVENT, FALSE);
}

static int EventGetFd(HANDLE handle)
{
  WINPR_EVENT* event = (WINPR_EVENT*)handle;

  if (!EventIsHandled(handle))
    return -1;

  return event->impl.fds[0];
}

static BOOL EventCloseHandle_(WINPR_EVENT* event)
{
  if (!event)
    return FALSE;

  if (event->bAttached)
  {
    // don't close attached file descriptor
    event->impl.fds[0] = -1; // mark as invalid
  }

  winpr_event_uninit(&event->impl);

#if defined(WITH_DEBUG_EVENTS)
  if (global_event_list)
  {
    ArrayList_Remove(global_event_list, event);
    if (ArrayList_Count(global_event_list) < 1)
    {
      ArrayList_Free(global_event_list);
      global_event_list = NULL;
    }
  }

  winpr_backtrace_free(event->create_stack);
#endif
  free(event->name);
  free(event);
  return TRUE;
}

static BOOL EventCloseHandle(HANDLE handle)
{
  WINPR_EVENT* event = (WINPR_EVENT*)handle;

  if (!EventIsHandled(handle))
    return FALSE;

  return EventCloseHandle_(event);
}

static HANDLE_OPS ops = { EventIsHandled,
                        EventCloseHandle,
                        EventGetFd,
                        NULL, /* CleanupHandle */
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL,
                        NULL };

HANDLE CreateEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
                    LPCWSTR lpName)
{
  HANDLE handle = NULL;
  char* name = NULL;

  if (lpName)
  {
    name = ConvertWCharToUtf8Alloc(lpName, NULL);
    if (!name)
      return NULL;
  }

  handle = CreateEventA(lpEventAttributes, bManualReset, bInitialState, name);
  free(name);
  return handle;
}

HANDLE CreateEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
                    LPCSTR lpName)
{
  WINPR_EVENT* event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));

  if (lpEventAttributes)
    WLog_WARN(TAG, "[%s] does not support lpEventAttributes", lpName);

  if (!event)
    return NULL;

  if (lpName)
    event->name = strdup(lpName);

  event->impl.fds[0] = -1;
  event->impl.fds[1] = -1;
  event->bAttached = FALSE;
  event->bManualReset = bManualReset;
  event->common.ops = &ops;
  WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, FD_READ);

  if (!event->bManualReset)
    WLog_ERR(TAG, "auto-reset events not yet implemented");

  if (!winpr_event_init(&event->impl))
    goto fail;

  if (bInitialState)
  {
    if (!SetEvent(event))
      goto fail;
  }

#if defined(WITH_DEBUG_EVENTS)
  event->create_stack = winpr_backtrace(20);
  if (!global_event_list)
    global_event_list = ArrayList_New(TRUE);

  if (global_event_list)
    ArrayList_Append(global_event_list, event);
#endif
  return (HANDLE)event;
fail:
  EventCloseHandle_(event);
  return NULL;
}

HANDLE CreateEventExW(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCWSTR lpName, DWORD dwFlags,
                      DWORD dwDesiredAccess)
{
  BOOL initial = FALSE;
  BOOL manual = FALSE;

  if (dwFlags & CREATE_EVENT_INITIAL_SET)
    initial = TRUE;

  if (dwFlags & CREATE_EVENT_MANUAL_RESET)
    manual = TRUE;

  if (dwDesiredAccess != 0)
  {
    char name[MAX_PATH] = WINPR_C_ARRAY_INIT;
    ConvertWCharToUtf8(lpName, name, sizeof(name) - 1);
    WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, name, dwDesiredAccess);
  }

  return CreateEventW(lpEventAttributes, manual, initial, lpName);
}

HANDLE CreateEventExA(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCSTR lpName, DWORD dwFlags,
                      DWORD dwDesiredAccess)
{
  BOOL initial = FALSE;
  BOOL manual = FALSE;

  if (dwFlags & CREATE_EVENT_INITIAL_SET)
    initial = TRUE;

  if (dwFlags & CREATE_EVENT_MANUAL_RESET)
    manual = TRUE;

  if (dwDesiredAccess != 0)
    WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, lpName,
              dwDesiredAccess);

  return CreateEventA(lpEventAttributes, manual, initial, lpName);
}

HANDLE OpenEventW(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName)
{
  /* TODO: Implement */
  WINPR_UNUSED(dwDesiredAccess);
  WINPR_UNUSED(bInheritHandle);
  WINPR_UNUSED(lpName);
  WLog_ERR(TAG, "not implemented");
  return NULL;
}

HANDLE OpenEventA(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName)
{
  /* TODO: Implement */
  WINPR_UNUSED(dwDesiredAccess);
  WINPR_UNUSED(bInheritHandle);
  WINPR_UNUSED(lpName);
  WLog_ERR(TAG, "not implemented");
  return NULL;
}

BOOL SetEvent(HANDLE hEvent)
{
  ULONG Type = 0;
  WINPR_HANDLE* Object = NULL;
  WINPR_EVENT* event = NULL;

  if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) || Type != HANDLE_TYPE_EVENT)
  {
    WLog_ERR(TAG, "SetEvent: hEvent is not an event");
    SetLastError(ERROR_INVALID_PARAMETER);
    return FALSE;
  }

  event = (WINPR_EVENT*)Object;
  return winpr_event_set(&event->impl);
}

BOOL ResetEvent(HANDLE hEvent)
{
  ULONG Type = 0;
  WINPR_HANDLE* Object = NULL;
  WINPR_EVENT* event = NULL;

  if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) || Type != HANDLE_TYPE_EVENT)
  {
    WLog_ERR(TAG, "ResetEvent: hEvent is not an event");
    SetLastError(ERROR_INVALID_PARAMETER);
    return FALSE;
  }

  event = (WINPR_EVENT*)Object;
  return winpr_event_reset(&event->impl);
}

#endif

HANDLE CreateFileDescriptorEventW(WINPR_ATTR_UNUSED LPSECURITY_ATTRIBUTES lpEventAttributes,
                                  BOOL bManualReset, WINPR_ATTR_UNUSED BOOL bInitialState,
                                  int FileDescriptor, ULONG mode)
{
#ifndef _WIN32
  WINPR_EVENT* event = NULL;
  HANDLE handle = NULL;
  event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));

  if (event)
  {
    event->impl.fds[0] = -1;
    event->impl.fds[1] = -1;
    event->bAttached = TRUE;
    event->bManualReset = bManualReset;
    winpr_event_init_from_fd(&event->impl, FileDescriptor);
    event->common.ops = &ops;
    WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, mode);
    handle = (HANDLE)event;
  }

  return handle;
#else
  return NULL;
#endif
}

HANDLE CreateFileDescriptorEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
                                  BOOL bInitialState, int FileDescriptor, ULONG mode)
{
  return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
                                    FileDescriptor, mode);
}

/**
 * Returns an event based on the handle returned by GetEventWaitObject()
 */
HANDLE CreateWaitObjectEvent(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
                             BOOL bInitialState, void* pObject)
{
#ifndef _WIN32
  return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
                                    (int)(ULONG_PTR)pObject, WINPR_FD_READ);
#else
  HANDLE hEvent = NULL;
  DuplicateHandle(GetCurrentProcess(), pObject, GetCurrentProcess(), &hEvent, 0, FALSE,
                  DUPLICATE_SAME_ACCESS);
  return hEvent;
#endif
}

/*
 * Returns inner file descriptor for usage with select()
 * This file descriptor is not usable on Windows
 */

int GetEventFileDescriptor(HANDLE hEvent)
{
#ifndef _WIN32
  return winpr_Handle_getFd(hEvent);
#else
  return -1;
#endif
}

/*
 * Set inner file descriptor for usage with select()
 * This file descriptor is not usable on Windows
 */

int SetEventFileDescriptor(HANDLE hEvent, int FileDescriptor, ULONG mode)
{
#ifndef _WIN32
  ULONG Type = 0;
  WINPR_HANDLE* Object = NULL;
  WINPR_EVENT* event = NULL;

  if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) || Type != HANDLE_TYPE_EVENT)
  {
    WLog_ERR(TAG, "SetEventFileDescriptor: hEvent is not an event");
    SetLastError(ERROR_INVALID_PARAMETER);
    return -1;
  }

  event = (WINPR_EVENT*)Object;

  if (!event->bAttached && event->impl.fds[0] >= 0 && event->impl.fds[0] != FileDescriptor)
    close(event->impl.fds[0]);

  event->bAttached = TRUE;
  event->common.Mode = mode;
  event->impl.fds[0] = FileDescriptor;
  return 0;
#else
  return -1;
#endif
}

/**
 * Returns platform-specific wait object as a void pointer
 *
 * On Windows, the returned object is the same as the hEvent
 * argument and is an event HANDLE usable in WaitForMultipleObjects
 *
 * On other platforms, the returned object can be cast to an int
 * to obtain a file descriptor usable in select()
 */

void* GetEventWaitObject(HANDLE hEvent)
{
#ifndef _WIN32
  int fd = 0;
  void* obj = NULL;
  fd = GetEventFileDescriptor(hEvent);
  obj = ((void*)(long)fd);
  return obj;
#else
  return hEvent;
#endif
}
#if defined(WITH_DEBUG_EVENTS)
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <sys/resource.h>

static BOOL dump_handle_list(void* data, size_t index, va_list ap)
{
  WINPR_EVENT* event = data;
  dump_event(event, index);
  return TRUE;
}

void DumpEventHandles_(const char* fkt, const char* file, size_t line)
{
  struct rlimit r = WINPR_C_ARRAY_INIT;
  int rc = getrlimit(RLIMIT_NOFILE, &r);
  if (rc >= 0)
  {
    size_t count = 0;
    for (rlim_t x = 0; x < r.rlim_cur; x++)
    {
      int flags = fcntl(x, F_GETFD);
      if (flags >= 0)
        count++;
    }
    WLog_INFO(TAG, "------- limits [%d/%d] open files %" PRIuz, r.rlim_cur, r.rlim_max, count);
  }
  WLog_DBG(TAG, "--------- Start dump [%s %s:%" PRIuz "]", fkt, file, line);
  if (global_event_list)
  {
    ArrayList_Lock(global_event_list);
    ArrayList_ForEach(global_event_list, dump_handle_list);
    ArrayList_Unlock(global_event_list);
  }
  WLog_DBG(TAG, "--------- End dump   [%s %s:%" PRIuz "]", fkt, file, line);
}
#endif

Coverage Report

Created: 2026-02-26 06:50

Line	Count	Source
1		/**
2		* WinPR: Windows Portable Runtime
3		* Synchronization Functions
4		*
5		* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
6		* Copyright 2017 Armin Novak <armin.novak@thincast.com>
7		* Copyright 2017 Thincast Technologies GmbH
8		*
9		* Licensed under the Apache License, Version 2.0 (the "License");
10		* you may not use this file except in compliance with the License.
11		* You may obtain a copy of the License at
12		*
13		* http://www.apache.org/licenses/LICENSE-2.0
14		*
15		* Unless required by applicable law or agreed to in writing, software
16		* distributed under the License is distributed on an "AS IS" BASIS,
17		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18		* See the License for the specific language governing permissions and
19		* limitations under the License.
20		*/
21
22		#include <winpr/config.h>
23
24		#include <stdio.h>
25		#include <string.h>
26		#include <stdlib.h>
27
28		#include <winpr/synch.h>
29
30		#ifndef _WIN32
31
32		#include "synch.h"
33
34		#ifdef WINPR_HAVE_UNISTD_H
35		#include <unistd.h>
36		#endif
37
38		#ifdef WINPR_HAVE_SYS_EVENTFD_H
39		#include <sys/eventfd.h>
40		#endif
41
42		#include <fcntl.h>
43		#include <errno.h>
44
45		#include "../handle/handle.h"
46		#include "../pipe/pipe.h"
47
48		#include "../log.h"
49		#include "event.h"
50		#define TAG WINPR_TAG("synch.event")
51
52		#if defined(WITH_DEBUG_EVENTS)
53		static wArrayList* global_event_list = NULL;
54
55		static void dump_event(WINPR_EVENT* event, size_t index)
56		{
57		char** msg = NULL;
58		size_t used = 0;
59
60		WLog_DBG(TAG, "Event handle created still not closed! [%" PRIuz ", %p]", index, event);
61		msg = winpr_backtrace_symbols(event->create_stack, &used);
62
63		for (size_t i = 2; i < used; i++)
64		WLog_DBG(TAG, "[%" PRIdz "]: %s", i, msg[i]);
65
66		free(msg);
67		}
68		#endif /* WITH_DEBUG_EVENTS */
69
70		#ifdef WINPR_HAVE_SYS_EVENTFD_H
71		#if !defined(WITH_EVENTFD_READ_WRITE)
72		static int eventfd_read(int fd, eventfd_t* value)
73		{
74		return (read(fd, value, sizeof(value)) == sizeof(value)) ? 0 : -1;
75		}
76
77		static int eventfd_write(int fd, eventfd_t value)
78		{
79		return (write(fd, &value, sizeof(value)) == sizeof(value)) ? 0 : -1;
80		}
81		#endif
82		#endif
83
84		#ifndef WINPR_HAVE_SYS_EVENTFD_H
85		static BOOL set_non_blocking_fd(int fd)
86		{
87		int flags;
88		flags = fcntl(fd, F_GETFL);
89		if (flags < 0)
90		return FALSE;
91
92		return fcntl(fd, F_SETFL, flags \| O_NONBLOCK) >= 0;
93		}
94		#endif /* !WINPR_HAVE_SYS_EVENTFD_H */
95
96		BOOL winpr_event_init(WINPR_EVENT_IMPL* event)
97	0	{
98	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
99	0	event->fds[1] = -1;
100	0	event->fds[0] = eventfd(0, EFD_NONBLOCK);
101
102	0	return event->fds[0] >= 0;
103		#else
104		if (pipe(event->fds) < 0)
105		return FALSE;
106
107		if (!set_non_blocking_fd(event->fds[0]) \|\| !set_non_blocking_fd(event->fds[1]))
108		goto out_error;
109
110		return TRUE;
111
112		out_error:
113		winpr_event_uninit(event);
114		return FALSE;
115		#endif
116	0	}
117
118		void winpr_event_init_from_fd(WINPR_EVENT_IMPL* event, int fd)
119	0	{
120	0	event->fds[0] = fd;
121		#ifndef WINPR_HAVE_SYS_EVENTFD_H
122		event->fds[1] = fd;
123		#endif
124	0	}
125
126		BOOL winpr_event_set(WINPR_EVENT_IMPL* event)
127	0	{
128	0	int ret = 0;
129	0	do
130	0	{
131	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
132	0	eventfd_t value = 1;
133	0	ret = eventfd_write(event->fds[0], value);
134		#else
135		ret = write(event->fds[1], "-", 1);
136		#endif
137	0	} while (ret < 0 && errno == EINTR);
138
139	0	return ret >= 0;
140	0	}
141
142		BOOL winpr_event_reset(WINPR_EVENT_IMPL* event)
143	0	{
144	0	int ret = 0;
145	0	do
146	0	{
147	0	do
148	0	{
149	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
150	0	eventfd_t value = 1;
151	0	ret = eventfd_read(event->fds[0], &value);
152		#else
153		char value;
154		ret = read(event->fds[0], &value, 1);
155		#endif
156	0	} while (ret < 0 && errno == EINTR);
157	0	} while (ret >= 0);
158
159	0	return (errno == EAGAIN);
160	0	}
161
162		void winpr_event_uninit(WINPR_EVENT_IMPL* event)
163	0	{
164	0	if (event->fds[0] >= 0)
165	0	{
166	0	close(event->fds[0]);
167	0	event->fds[0] = -1;
168	0	}
169
170	0	if (event->fds[1] >= 0)
171	0	{
172	0	close(event->fds[1]);
173	0	event->fds[1] = -1;
174	0	}
175	0	}
176
177		static BOOL EventCloseHandle(HANDLE handle);
178
179		static BOOL EventIsHandled(HANDLE handle)
180	0	{
181	0	return WINPR_HANDLE_IS_HANDLED(handle, HANDLE_TYPE_EVENT, FALSE);
182	0	}
183
184		static int EventGetFd(HANDLE handle)
185	0	{
186	0	WINPR_EVENT* event = (WINPR_EVENT*)handle;
187
188	0	if (!EventIsHandled(handle))
189	0	return -1;
190
191	0	return event->impl.fds[0];
192	0	}
193
194		static BOOL EventCloseHandle_(WINPR_EVENT* event)
195	0	{
196	0	if (!event)
197	0	return FALSE;
198
199	0	if (event->bAttached)
200	0	{
201		// don't close attached file descriptor
202	0	event->impl.fds[0] = -1; // mark as invalid
203	0	}
204
205	0	winpr_event_uninit(&event->impl);
206
207		#if defined(WITH_DEBUG_EVENTS)
208		if (global_event_list)
209		{
210		ArrayList_Remove(global_event_list, event);
211		if (ArrayList_Count(global_event_list) < 1)
212		{
213		ArrayList_Free(global_event_list);
214		global_event_list = NULL;
215		}
216		}
217
218		winpr_backtrace_free(event->create_stack);
219		#endif
220	0	free(event->name);
221	0	free(event);
222	0	return TRUE;
223	0	}
224
225		static BOOL EventCloseHandle(HANDLE handle)
226	0	{
227	0	WINPR_EVENT* event = (WINPR_EVENT*)handle;
228
229	0	if (!EventIsHandled(handle))
230	0	return FALSE;
231
232	0	return EventCloseHandle_(event);
233	0	}
234
235		static HANDLE_OPS ops = { EventIsHandled,
236		EventCloseHandle,
237		EventGetFd,
238		NULL, /* CleanupHandle */
239		NULL,
240		NULL,
241		NULL,
242		NULL,
243		NULL,
244		NULL,
245		NULL,
246		NULL,
247		NULL,
248		NULL,
249		NULL,
250		NULL,
251		NULL,
252		NULL,
253		NULL,
254		NULL,
255		NULL };
256
257		HANDLE CreateEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
258		LPCWSTR lpName)
259	0	{
260	0	HANDLE handle = NULL;
261	0	char* name = NULL;
262
263	0	if (lpName)
264	0	{
265	0	name = ConvertWCharToUtf8Alloc(lpName, NULL);
266	0	if (!name)
267	0	return NULL;
268	0	}
269
270	0	handle = CreateEventA(lpEventAttributes, bManualReset, bInitialState, name);
271	0	free(name);
272	0	return handle;
273	0	}
274
275		HANDLE CreateEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
276		LPCSTR lpName)
277	0	{
278	0	WINPR_EVENT* event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));
279
280	0	if (lpEventAttributes)
281	0	WLog_WARN(TAG, "[%s] does not support lpEventAttributes", lpName);
282
283	0	if (!event)
284	0	return NULL;
285
286	0	if (lpName)
287	0	event->name = strdup(lpName);
288
289	0	event->impl.fds[0] = -1;
290	0	event->impl.fds[1] = -1;
291	0	event->bAttached = FALSE;
292	0	event->bManualReset = bManualReset;
293	0	event->common.ops = &ops;
294	0	WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, FD_READ);
295
296	0	if (!event->bManualReset)
297	0	WLog_ERR(TAG, "auto-reset events not yet implemented");
298
299	0	if (!winpr_event_init(&event->impl))
300	0	goto fail;
301
302	0	if (bInitialState)
303	0	{
304	0	if (!SetEvent(event))
305	0	goto fail;
306	0	}
307
308		#if defined(WITH_DEBUG_EVENTS)
309		event->create_stack = winpr_backtrace(20);
310		if (!global_event_list)
311		global_event_list = ArrayList_New(TRUE);
312
313		if (global_event_list)
314		ArrayList_Append(global_event_list, event);
315		#endif
316	0	return (HANDLE)event;
317	0	fail:
318	0	EventCloseHandle_(event);
319	0	return NULL;
320	0	}
321
322		HANDLE CreateEventExW(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCWSTR lpName, DWORD dwFlags,
323		DWORD dwDesiredAccess)
324	0	{
325	0	BOOL initial = FALSE;
326	0	BOOL manual = FALSE;
327
328	0	if (dwFlags & CREATE_EVENT_INITIAL_SET)
329	0	initial = TRUE;
330
331	0	if (dwFlags & CREATE_EVENT_MANUAL_RESET)
332	0	manual = TRUE;
333
334	0	if (dwDesiredAccess != 0)
335	0	{
336	0	char name[MAX_PATH] = WINPR_C_ARRAY_INIT;
337	0	ConvertWCharToUtf8(lpName, name, sizeof(name) - 1);
338	0	WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, name, dwDesiredAccess);
339	0	}
340
341	0	return CreateEventW(lpEventAttributes, manual, initial, lpName);
342	0	}
343
344		HANDLE CreateEventExA(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCSTR lpName, DWORD dwFlags,
345		DWORD dwDesiredAccess)
346	0	{
347	0	BOOL initial = FALSE;
348	0	BOOL manual = FALSE;
349
350	0	if (dwFlags & CREATE_EVENT_INITIAL_SET)
351	0	initial = TRUE;
352
353	0	if (dwFlags & CREATE_EVENT_MANUAL_RESET)
354	0	manual = TRUE;
355
356	0	if (dwDesiredAccess != 0)
357	0	WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, lpName,
358	0	dwDesiredAccess);
359
360	0	return CreateEventA(lpEventAttributes, manual, initial, lpName);
361	0	}
362
363		HANDLE OpenEventW(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName)
364	0	{
365		/* TODO: Implement */
366	0	WINPR_UNUSED(dwDesiredAccess);
367	0	WINPR_UNUSED(bInheritHandle);
368	0	WINPR_UNUSED(lpName);
369	0	WLog_ERR(TAG, "not implemented");
370	0	return NULL;
371	0	}
372
373		HANDLE OpenEventA(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName)
374	0	{
375		/* TODO: Implement */
376	0	WINPR_UNUSED(dwDesiredAccess);
377	0	WINPR_UNUSED(bInheritHandle);
378	0	WINPR_UNUSED(lpName);
379	0	WLog_ERR(TAG, "not implemented");
380	0	return NULL;
381	0	}
382
383		BOOL SetEvent(HANDLE hEvent)
384	0	{
385	0	ULONG Type = 0;
386	0	WINPR_HANDLE* Object = NULL;
387	0	WINPR_EVENT* event = NULL;
388
389	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
390	0	{
391	0	WLog_ERR(TAG, "SetEvent: hEvent is not an event");
392	0	SetLastError(ERROR_INVALID_PARAMETER);
393	0	return FALSE;
394	0	}
395
396	0	event = (WINPR_EVENT*)Object;
397	0	return winpr_event_set(&event->impl);
398	0	}
399
400		BOOL ResetEvent(HANDLE hEvent)
401	0	{
402	0	ULONG Type = 0;
403	0	WINPR_HANDLE* Object = NULL;
404	0	WINPR_EVENT* event = NULL;
405
406	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
407	0	{
408	0	WLog_ERR(TAG, "ResetEvent: hEvent is not an event");
409	0	SetLastError(ERROR_INVALID_PARAMETER);
410	0	return FALSE;
411	0	}
412
413	0	event = (WINPR_EVENT*)Object;
414	0	return winpr_event_reset(&event->impl);
415	0	}
416
417		#endif
418
419		HANDLE CreateFileDescriptorEventW(WINPR_ATTR_UNUSED LPSECURITY_ATTRIBUTES lpEventAttributes,
420		BOOL bManualReset, WINPR_ATTR_UNUSED BOOL bInitialState,
421		int FileDescriptor, ULONG mode)
422	0	{
423	0	#ifndef _WIN32
424	0	WINPR_EVENT* event = NULL;
425	0	HANDLE handle = NULL;
426	0	event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));
427
428	0	if (event)
429	0	{
430	0	event->impl.fds[0] = -1;
431	0	event->impl.fds[1] = -1;
432	0	event->bAttached = TRUE;
433	0	event->bManualReset = bManualReset;
434	0	winpr_event_init_from_fd(&event->impl, FileDescriptor);
435	0	event->common.ops = &ops;
436	0	WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, mode);
437	0	handle = (HANDLE)event;
438	0	}
439
440	0	return handle;
441		#else
442		return NULL;
443		#endif
444	0	}
445
446		HANDLE CreateFileDescriptorEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
447		BOOL bInitialState, int FileDescriptor, ULONG mode)
448	0	{
449	0	return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
450	0	FileDescriptor, mode);
451	0	}
452
453		/**
454		* Returns an event based on the handle returned by GetEventWaitObject()
455		*/
456		HANDLE CreateWaitObjectEvent(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
457		BOOL bInitialState, void* pObject)
458	0	{
459	0	#ifndef _WIN32
460	0	return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
461	0	(int)(ULONG_PTR)pObject, WINPR_FD_READ);
462		#else
463		HANDLE hEvent = NULL;
464		DuplicateHandle(GetCurrentProcess(), pObject, GetCurrentProcess(), &hEvent, 0, FALSE,
465		DUPLICATE_SAME_ACCESS);
466		return hEvent;
467		#endif
468	0	}
469
470		/*
471		* Returns inner file descriptor for usage with select()
472		* This file descriptor is not usable on Windows
473		*/
474
475		int GetEventFileDescriptor(HANDLE hEvent)
476	0	{
477	0	#ifndef _WIN32
478	0	return winpr_Handle_getFd(hEvent);
479		#else
480		return -1;
481		#endif
482	0	}
483
484		/*
485		* Set inner file descriptor for usage with select()
486		* This file descriptor is not usable on Windows
487		*/
488
489		int SetEventFileDescriptor(HANDLE hEvent, int FileDescriptor, ULONG mode)
490	0	{
491	0	#ifndef _WIN32
492	0	ULONG Type = 0;
493	0	WINPR_HANDLE* Object = NULL;
494	0	WINPR_EVENT* event = NULL;
495
496	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
497	0	{
498	0	WLog_ERR(TAG, "SetEventFileDescriptor: hEvent is not an event");
499	0	SetLastError(ERROR_INVALID_PARAMETER);
500	0	return -1;
501	0	}
502
503	0	event = (WINPR_EVENT*)Object;
504
505	0	if (!event->bAttached && event->impl.fds[0] >= 0 && event->impl.fds[0] != FileDescriptor)
506	0	close(event->impl.fds[0]);
507
508	0	event->bAttached = TRUE;
509	0	event->common.Mode = mode;
510	0	event->impl.fds[0] = FileDescriptor;
511	0	return 0;
512		#else
513		return -1;
514		#endif
515	0	}
516
517		/**
518		* Returns platform-specific wait object as a void pointer
519		*
520		* On Windows, the returned object is the same as the hEvent
521		* argument and is an event HANDLE usable in WaitForMultipleObjects
522		*
523		* On other platforms, the returned object can be cast to an int
524		* to obtain a file descriptor usable in select()
525		*/
526
527		void* GetEventWaitObject(HANDLE hEvent)
528	0	{
529	0	#ifndef _WIN32
530	0	int fd = 0;
531	0	void* obj = NULL;
532	0	fd = GetEventFileDescriptor(hEvent);
533	0	obj = ((void*)(long)fd);
534	0	return obj;
535		#else
536		return hEvent;
537		#endif
538	0	}
539		#if defined(WITH_DEBUG_EVENTS)
540		#include <unistd.h>
541		#include <fcntl.h>
542		#include <sys/time.h>
543		#include <sys/resource.h>
544
545		static BOOL dump_handle_list(void* data, size_t index, va_list ap)
546		{
547		WINPR_EVENT* event = data;
548		dump_event(event, index);
549		return TRUE;
550		}
551
552		void DumpEventHandles_(const char* fkt, const char* file, size_t line)
553		{
554		struct rlimit r = WINPR_C_ARRAY_INIT;
555		int rc = getrlimit(RLIMIT_NOFILE, &r);
556		if (rc >= 0)
557		{
558		size_t count = 0;
559		for (rlim_t x = 0; x < r.rlim_cur; x++)
560		{
561		int flags = fcntl(x, F_GETFD);
562		if (flags >= 0)
563		count++;
564		}
565		WLog_INFO(TAG, "------- limits [%d/%d] open files %" PRIuz, r.rlim_cur, r.rlim_max, count);
566		}
567		WLog_DBG(TAG, "--------- Start dump [%s %s:%" PRIuz "]", fkt, file, line);
568		if (global_event_list)
569		{
570		ArrayList_Lock(global_event_list);
571		ArrayList_ForEach(global_event_list, dump_handle_list);
572		ArrayList_Unlock(global_event_list);
573		}
574		WLog_DBG(TAG, "--------- End dump [%s %s:%" PRIuz "]", fkt, file, line);
575		}
576		#endif