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

Source (jump to first uncovered line)
/**
 * 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;
#if 0
  void* stack = winpr_backtrace(20);
  WLog_DBG(TAG, "Called from:");
  msg = winpr_backtrace_symbols(stack, &used);

  for (size_t i = 0; i < used; i++)
    WLog_DBG(TAG, "[%" PRIdz "]: %s", i, msg[i]);

  free(msg);
  winpr_backtrace_free(stack);
#endif
  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
  int flags;

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

  if (event->fds[1] != -1)
  {
    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)
    WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, lpName,
              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(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
                                  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 = { 0 };
  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: 2024-09-08 06:16

Line	Count	Source (jump to first uncovered line)
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		#if 0
60		void* stack = winpr_backtrace(20);
61		WLog_DBG(TAG, "Called from:");
62		msg = winpr_backtrace_symbols(stack, &used);
63
64		for (size_t i = 0; i < used; i++)
65		WLog_DBG(TAG, "[%" PRIdz "]: %s", i, msg[i]);
66
67		free(msg);
68		winpr_backtrace_free(stack);
69		#endif
70		WLog_DBG(TAG, "Event handle created still not closed! [%" PRIuz ", %p]", index, event);
71		msg = winpr_backtrace_symbols(event->create_stack, &used);
72
73		for (size_t i = 2; i < used; i++)
74		WLog_DBG(TAG, "[%" PRIdz "]: %s", i, msg[i]);
75
76		free(msg);
77		}
78		#endif /* WITH_DEBUG_EVENTS */
79
80		#ifdef WINPR_HAVE_SYS_EVENTFD_H
81		#if !defined(WITH_EVENTFD_READ_WRITE)
82		static int eventfd_read(int fd, eventfd_t* value)
83		{
84		return (read(fd, value, sizeof(value)) == sizeof(value)) ? 0 : -1;
85		}
86
87		static int eventfd_write(int fd, eventfd_t value)
88		{
89		return (write(fd, &value, sizeof(value)) == sizeof(value)) ? 0 : -1;
90		}
91		#endif
92		#endif
93
94		#ifndef WINPR_HAVE_SYS_EVENTFD_H
95		static BOOL set_non_blocking_fd(int fd)
96		{
97		int flags;
98		flags = fcntl(fd, F_GETFL);
99		if (flags < 0)
100		return FALSE;
101
102		return fcntl(fd, F_SETFL, flags \| O_NONBLOCK) >= 0;
103		}
104		#endif /* !WINPR_HAVE_SYS_EVENTFD_H */
105
106		BOOL winpr_event_init(WINPR_EVENT_IMPL* event)
107	0	{
108	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
109	0	event->fds[1] = -1;
110	0	event->fds[0] = eventfd(0, EFD_NONBLOCK);
111
112	0	return event->fds[0] >= 0;
113		#else
114		int flags;
115
116		if (pipe(event->fds) < 0)
117		return FALSE;
118
119		if (!set_non_blocking_fd(event->fds[0]) \|\| !set_non_blocking_fd(event->fds[1]))
120		goto out_error;
121
122		return TRUE;
123
124		out_error:
125		winpr_event_uninit(event);
126		return FALSE;
127		#endif
128	0	}
129
130		void winpr_event_init_from_fd(WINPR_EVENT_IMPL* event, int fd)
131	0	{
132	0	event->fds[0] = fd;
133		#ifndef WINPR_HAVE_SYS_EVENTFD_H
134		event->fds[1] = fd;
135		#endif
136	0	}
137
138		BOOL winpr_event_set(WINPR_EVENT_IMPL* event)
139	0	{
140	0	int ret = 0;
141	0	do
142	0	{
143	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
144	0	eventfd_t value = 1;
145	0	ret = eventfd_write(event->fds[0], value);
146		#else
147		ret = write(event->fds[1], "-", 1);
148		#endif
149	0	} while (ret < 0 && errno == EINTR);
150
151	0	return ret >= 0;
152	0	}
153
154		BOOL winpr_event_reset(WINPR_EVENT_IMPL* event)
155	0	{
156	0	int ret = 0;
157	0	do
158	0	{
159	0	do
160	0	{
161	0	#ifdef WINPR_HAVE_SYS_EVENTFD_H
162	0	eventfd_t value = 1;
163	0	ret = eventfd_read(event->fds[0], &value);
164		#else
165		char value;
166		ret = read(event->fds[0], &value, 1);
167		#endif
168	0	} while (ret < 0 && errno == EINTR);
169	0	} while (ret >= 0);
170
171	0	return (errno == EAGAIN);
172	0	}
173
174		void winpr_event_uninit(WINPR_EVENT_IMPL* event)
175	0	{
176	0	if (event->fds[0] != -1)
177	0	{
178	0	close(event->fds[0]);
179	0	event->fds[0] = -1;
180	0	}
181
182	0	if (event->fds[1] != -1)
183	0	{
184	0	close(event->fds[1]);
185	0	event->fds[1] = -1;
186	0	}
187	0	}
188
189		static BOOL EventCloseHandle(HANDLE handle);
190
191		static BOOL EventIsHandled(HANDLE handle)
192	0	{
193	0	return WINPR_HANDLE_IS_HANDLED(handle, HANDLE_TYPE_EVENT, FALSE);
194	0	}
195
196		static int EventGetFd(HANDLE handle)
197	0	{
198	0	WINPR_EVENT* event = (WINPR_EVENT*)handle;
199
200	0	if (!EventIsHandled(handle))
201	0	return -1;
202
203	0	return event->impl.fds[0];
204	0	}
205
206		static BOOL EventCloseHandle_(WINPR_EVENT* event)
207	0	{
208	0	if (!event)
209	0	return FALSE;
210
211	0	if (event->bAttached)
212	0	{
213		// don't close attached file descriptor
214	0	event->impl.fds[0] = -1; // mark as invalid
215	0	}
216
217	0	winpr_event_uninit(&event->impl);
218
219		#if defined(WITH_DEBUG_EVENTS)
220		if (global_event_list)
221		{
222		ArrayList_Remove(global_event_list, event);
223		if (ArrayList_Count(global_event_list) < 1)
224		{
225		ArrayList_Free(global_event_list);
226		global_event_list = NULL;
227		}
228		}
229
230		winpr_backtrace_free(event->create_stack);
231		#endif
232	0	free(event->name);
233	0	free(event);
234	0	return TRUE;
235	0	}
236
237		static BOOL EventCloseHandle(HANDLE handle)
238	0	{
239	0	WINPR_EVENT* event = (WINPR_EVENT*)handle;
240
241	0	if (!EventIsHandled(handle))
242	0	return FALSE;
243
244	0	return EventCloseHandle_(event);
245	0	}
246
247		static HANDLE_OPS ops = { EventIsHandled,
248		EventCloseHandle,
249		EventGetFd,
250		NULL, /* CleanupHandle */
251		NULL,
252		NULL,
253		NULL,
254		NULL,
255		NULL,
256		NULL,
257		NULL,
258		NULL,
259		NULL,
260		NULL,
261		NULL,
262		NULL,
263		NULL,
264		NULL,
265		NULL,
266		NULL,
267		NULL };
268
269		HANDLE CreateEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
270		LPCWSTR lpName)
271	0	{
272	0	HANDLE handle = NULL;
273	0	char* name = NULL;
274
275	0	if (lpName)
276	0	{
277	0	name = ConvertWCharToUtf8Alloc(lpName, NULL);
278	0	if (!name)
279	0	return NULL;
280	0	}
281
282	0	handle = CreateEventA(lpEventAttributes, bManualReset, bInitialState, name);
283	0	free(name);
284	0	return handle;
285	0	}
286
287		HANDLE CreateEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset, BOOL bInitialState,
288		LPCSTR lpName)
289	0	{
290	0	WINPR_EVENT* event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));
291
292	0	if (lpEventAttributes)
293	0	WLog_WARN(TAG, "[%s] does not support lpEventAttributes", lpName);
294
295	0	if (!event)
296	0	return NULL;
297
298	0	if (lpName)
299	0	event->name = strdup(lpName);
300
301	0	event->impl.fds[0] = -1;
302	0	event->impl.fds[1] = -1;
303	0	event->bAttached = FALSE;
304	0	event->bManualReset = bManualReset;
305	0	event->common.ops = &ops;
306	0	WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, FD_READ);
307
308	0	if (!event->bManualReset)
309	0	WLog_ERR(TAG, "auto-reset events not yet implemented");
310
311	0	if (!winpr_event_init(&event->impl))
312	0	goto fail;
313
314	0	if (bInitialState)
315	0	{
316	0	if (!SetEvent(event))
317	0	goto fail;
318	0	}
319
320		#if defined(WITH_DEBUG_EVENTS)
321		event->create_stack = winpr_backtrace(20);
322		if (!global_event_list)
323		global_event_list = ArrayList_New(TRUE);
324
325		if (global_event_list)
326		ArrayList_Append(global_event_list, event);
327		#endif
328	0	return (HANDLE)event;
329	0	fail:
330	0	EventCloseHandle_(event);
331	0	return NULL;
332	0	}
333
334		HANDLE CreateEventExW(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCWSTR lpName, DWORD dwFlags,
335		DWORD dwDesiredAccess)
336	0	{
337	0	BOOL initial = FALSE;
338	0	BOOL manual = FALSE;
339
340	0	if (dwFlags & CREATE_EVENT_INITIAL_SET)
341	0	initial = TRUE;
342
343	0	if (dwFlags & CREATE_EVENT_MANUAL_RESET)
344	0	manual = TRUE;
345
346	0	if (dwDesiredAccess != 0)
347	0	WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, lpName,
348	0	dwDesiredAccess);
349
350	0	return CreateEventW(lpEventAttributes, manual, initial, lpName);
351	0	}
352
353		HANDLE CreateEventExA(LPSECURITY_ATTRIBUTES lpEventAttributes, LPCSTR lpName, DWORD dwFlags,
354		DWORD dwDesiredAccess)
355	0	{
356	0	BOOL initial = FALSE;
357	0	BOOL manual = FALSE;
358
359	0	if (dwFlags & CREATE_EVENT_INITIAL_SET)
360	0	initial = TRUE;
361
362	0	if (dwFlags & CREATE_EVENT_MANUAL_RESET)
363	0	manual = TRUE;
364
365	0	if (dwDesiredAccess != 0)
366	0	WLog_WARN(TAG, "[%s] does not support dwDesiredAccess 0x%08" PRIx32, lpName,
367	0	dwDesiredAccess);
368
369	0	return CreateEventA(lpEventAttributes, manual, initial, lpName);
370	0	}
371
372		HANDLE OpenEventW(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCWSTR lpName)
373	0	{
374		/* TODO: Implement */
375	0	WINPR_UNUSED(dwDesiredAccess);
376	0	WINPR_UNUSED(bInheritHandle);
377	0	WINPR_UNUSED(lpName);
378	0	WLog_ERR(TAG, "not implemented");
379	0	return NULL;
380	0	}
381
382		HANDLE OpenEventA(DWORD dwDesiredAccess, BOOL bInheritHandle, LPCSTR lpName)
383	0	{
384		/* TODO: Implement */
385	0	WINPR_UNUSED(dwDesiredAccess);
386	0	WINPR_UNUSED(bInheritHandle);
387	0	WINPR_UNUSED(lpName);
388	0	WLog_ERR(TAG, "not implemented");
389	0	return NULL;
390	0	}
391
392		BOOL SetEvent(HANDLE hEvent)
393	0	{
394	0	ULONG Type = 0;
395	0	WINPR_HANDLE* Object = NULL;
396	0	WINPR_EVENT* event = NULL;
397
398	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
399	0	{
400	0	WLog_ERR(TAG, "SetEvent: hEvent is not an event");
401	0	SetLastError(ERROR_INVALID_PARAMETER);
402	0	return FALSE;
403	0	}
404
405	0	event = (WINPR_EVENT*)Object;
406	0	return winpr_event_set(&event->impl);
407	0	}
408
409		BOOL ResetEvent(HANDLE hEvent)
410	0	{
411	0	ULONG Type = 0;
412	0	WINPR_HANDLE* Object = NULL;
413	0	WINPR_EVENT* event = NULL;
414
415	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
416	0	{
417	0	WLog_ERR(TAG, "ResetEvent: hEvent is not an event");
418	0	SetLastError(ERROR_INVALID_PARAMETER);
419	0	return FALSE;
420	0	}
421
422	0	event = (WINPR_EVENT*)Object;
423	0	return winpr_event_reset(&event->impl);
424	0	}
425
426		#endif
427
428		HANDLE CreateFileDescriptorEventW(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
429		BOOL bInitialState, int FileDescriptor, ULONG mode)
430	0	{
431	0	#ifndef _WIN32
432	0	WINPR_EVENT* event = NULL;
433	0	HANDLE handle = NULL;
434	0	event = (WINPR_EVENT*)calloc(1, sizeof(WINPR_EVENT));
435
436	0	if (event)
437	0	{
438	0	event->impl.fds[0] = -1;
439	0	event->impl.fds[1] = -1;
440	0	event->bAttached = TRUE;
441	0	event->bManualReset = bManualReset;
442	0	winpr_event_init_from_fd(&event->impl, FileDescriptor);
443	0	event->common.ops = &ops;
444	0	WINPR_HANDLE_SET_TYPE_AND_MODE(event, HANDLE_TYPE_EVENT, mode);
445	0	handle = (HANDLE)event;
446	0	}
447
448	0	return handle;
449		#else
450		return NULL;
451		#endif
452	0	}
453
454		HANDLE CreateFileDescriptorEventA(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
455		BOOL bInitialState, int FileDescriptor, ULONG mode)
456	0	{
457	0	return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
458	0	FileDescriptor, mode);
459	0	}
460
461		/**
462		* Returns an event based on the handle returned by GetEventWaitObject()
463		*/
464		HANDLE CreateWaitObjectEvent(LPSECURITY_ATTRIBUTES lpEventAttributes, BOOL bManualReset,
465		BOOL bInitialState, void* pObject)
466	0	{
467	0	#ifndef _WIN32
468	0	return CreateFileDescriptorEventW(lpEventAttributes, bManualReset, bInitialState,
469	0	(int)(ULONG_PTR)pObject, WINPR_FD_READ);
470		#else
471		HANDLE hEvent = NULL;
472		DuplicateHandle(GetCurrentProcess(), pObject, GetCurrentProcess(), &hEvent, 0, FALSE,
473		DUPLICATE_SAME_ACCESS);
474		return hEvent;
475		#endif
476	0	}
477
478		/*
479		* Returns inner file descriptor for usage with select()
480		* This file descriptor is not usable on Windows
481		*/
482
483		int GetEventFileDescriptor(HANDLE hEvent)
484	0	{
485	0	#ifndef _WIN32
486	0	return winpr_Handle_getFd(hEvent);
487		#else
488		return -1;
489		#endif
490	0	}
491
492		/*
493		* Set inner file descriptor for usage with select()
494		* This file descriptor is not usable on Windows
495		*/
496
497		int SetEventFileDescriptor(HANDLE hEvent, int FileDescriptor, ULONG mode)
498	0	{
499	0	#ifndef _WIN32
500	0	ULONG Type = 0;
501	0	WINPR_HANDLE* Object = NULL;
502	0	WINPR_EVENT* event = NULL;
503
504	0	if (!winpr_Handle_GetInfo(hEvent, &Type, &Object) \|\| Type != HANDLE_TYPE_EVENT)
505	0	{
506	0	WLog_ERR(TAG, "SetEventFileDescriptor: hEvent is not an event");
507	0	SetLastError(ERROR_INVALID_PARAMETER);
508	0	return -1;
509	0	}
510
511	0	event = (WINPR_EVENT*)Object;
512
513	0	if (!event->bAttached && event->impl.fds[0] >= 0 && event->impl.fds[0] != FileDescriptor)
514	0	close(event->impl.fds[0]);
515
516	0	event->bAttached = TRUE;
517	0	event->common.Mode = mode;
518	0	event->impl.fds[0] = FileDescriptor;
519	0	return 0;
520		#else
521		return -1;
522		#endif
523	0	}
524
525		/**
526		* Returns platform-specific wait object as a void pointer
527		*
528		* On Windows, the returned object is the same as the hEvent
529		* argument and is an event HANDLE usable in WaitForMultipleObjects
530		*
531		* On other platforms, the returned object can be cast to an int
532		* to obtain a file descriptor usable in select()
533		*/
534
535		void* GetEventWaitObject(HANDLE hEvent)
536	0	{
537	0	#ifndef _WIN32
538	0	int fd = 0;
539	0	void* obj = NULL;
540	0	fd = GetEventFileDescriptor(hEvent);
541	0	obj = ((void*)(long)fd);
542	0	return obj;
543		#else
544		return hEvent;
545		#endif
546	0	}
547		#if defined(WITH_DEBUG_EVENTS)
548		#include <unistd.h>
549		#include <fcntl.h>
550		#include <sys/time.h>
551		#include <sys/resource.h>
552
553		static BOOL dump_handle_list(void* data, size_t index, va_list ap)
554		{
555		WINPR_EVENT* event = data;
556		dump_event(event, index);
557		return TRUE;
558		}
559
560		void DumpEventHandles_(const char* fkt, const char* file, size_t line)
561		{
562		struct rlimit r = { 0 };
563		int rc = getrlimit(RLIMIT_NOFILE, &r);
564		if (rc >= 0)
565		{
566		size_t count = 0;
567		for (rlim_t x = 0; x < r.rlim_cur; x++)
568		{
569		int flags = fcntl(x, F_GETFD);
570		if (flags >= 0)
571		count++;
572		}
573		WLog_INFO(TAG, "------- limits [%d/%d] open files %" PRIuz, r.rlim_cur, r.rlim_max, count);
574		}
575		WLog_DBG(TAG, "--------- Start dump [%s %s:%" PRIuz "]", fkt, file, line);
576		if (global_event_list)
577		{
578		ArrayList_Lock(global_event_list);
579		ArrayList_ForEach(global_event_list, dump_handle_list);
580		ArrayList_Unlock(global_event_list);
581		}
582		WLog_DBG(TAG, "--------- End dump [%s %s:%" PRIuz "]", fkt, file, line);
583		}
584		#endif