149 lines
3.1 KiB
C
149 lines
3.1 KiB
C
/**
|
|
* WinPR: Windows Portable Runtime
|
|
* Synchronization Functions
|
|
*
|
|
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|
*
|
|
* 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 <winpr/platform.h>
|
|
#include <winpr/windows.h>
|
|
|
|
#include <winpr/synch.h>
|
|
|
|
#include "../log.h"
|
|
#include "../thread/apc.h"
|
|
#include "../thread/thread.h"
|
|
#include "../synch/pollset.h"
|
|
|
|
#define TAG WINPR_TAG("synch.sleep")
|
|
|
|
#ifndef _WIN32
|
|
|
|
#include <time.h>
|
|
|
|
WINPR_PRAGMA_DIAG_PUSH
|
|
WINPR_PRAGMA_DIAG_IGNORED_RESERVED_ID_MACRO
|
|
|
|
#ifdef WINPR_HAVE_UNISTD_H
|
|
#ifndef _XOPEN_SOURCE
|
|
#define _XOPEN_SOURCE 500
|
|
#endif
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
WINPR_PRAGMA_DIAG_POP
|
|
|
|
VOID Sleep(DWORD dwMilliseconds)
|
|
{
|
|
usleep(dwMilliseconds * 1000);
|
|
}
|
|
|
|
DWORD SleepEx(DWORD dwMilliseconds, BOOL bAlertable)
|
|
{
|
|
WINPR_THREAD* thread = winpr_GetCurrentThread();
|
|
WINPR_POLL_SET pollset;
|
|
int status = 0;
|
|
DWORD ret = WAIT_FAILED;
|
|
BOOL autoSignalled = 0;
|
|
|
|
if (thread)
|
|
{
|
|
/* treat re-entrancy if a completion is calling us */
|
|
if (thread->apc.treatingCompletions)
|
|
bAlertable = FALSE;
|
|
}
|
|
else
|
|
{
|
|
/* called from a non WinPR thread */
|
|
bAlertable = FALSE;
|
|
}
|
|
|
|
if (!bAlertable || !thread->apc.length)
|
|
{
|
|
usleep(dwMilliseconds * 1000);
|
|
return 0;
|
|
}
|
|
|
|
if (!pollset_init(&pollset, thread->apc.length))
|
|
{
|
|
WLog_ERR(TAG, "unable to initialize pollset");
|
|
return WAIT_FAILED;
|
|
}
|
|
|
|
if (!apc_collectFds(thread, &pollset, &autoSignalled))
|
|
{
|
|
WLog_ERR(TAG, "unable to APC file descriptors");
|
|
goto out;
|
|
}
|
|
|
|
if (!autoSignalled)
|
|
{
|
|
/* we poll and wait only if no APC member is ready */
|
|
status = pollset_poll(&pollset, dwMilliseconds);
|
|
if (status < 0)
|
|
{
|
|
WLog_ERR(TAG, "polling of apc fds failed");
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
if (apc_executeCompletions(thread, &pollset, 0))
|
|
{
|
|
ret = WAIT_IO_COMPLETION;
|
|
}
|
|
else
|
|
{
|
|
/* according to the spec return value is 0 see
|
|
* https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-sleepex*/
|
|
ret = 0;
|
|
}
|
|
out:
|
|
pollset_uninit(&pollset);
|
|
return ret;
|
|
}
|
|
|
|
#endif
|
|
|
|
VOID USleep(DWORD dwMicroseconds)
|
|
{
|
|
#ifndef _WIN32
|
|
usleep(dwMicroseconds);
|
|
#else
|
|
static LARGE_INTEGER freq = { 0 };
|
|
LARGE_INTEGER t1 = { 0 };
|
|
LARGE_INTEGER t2 = { 0 };
|
|
|
|
QueryPerformanceCounter(&t1);
|
|
|
|
if (freq.QuadPart == 0)
|
|
{
|
|
QueryPerformanceFrequency(&freq);
|
|
}
|
|
|
|
// in order to save cpu cyles we use Sleep() for the large share ...
|
|
if (dwMicroseconds >= 1000)
|
|
{
|
|
Sleep(dwMicroseconds / 1000);
|
|
}
|
|
// ... and busy loop until all the requested micro seconds have passed
|
|
do
|
|
{
|
|
QueryPerformanceCounter(&t2);
|
|
} while (((t2.QuadPart - t1.QuadPart) * 1000000) / freq.QuadPart < dwMicroseconds);
|
|
#endif
|
|
}
|