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/*****************************************************************************
* *
* PrimeSense PSCommon Library *
* Copyright (C) 2012 PrimeSense Ltd. *
* *
* This file is part of PSCommon. *
* *
* 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 "XnLib.h"
XN_C_API XnStatus xnOSCreateThread(XN_THREAD_PROC_PROTO pThreadProc, const XN_THREAD_PARAM pThreadParam, XN_THREAD_HANDLE* pThreadHandle)
{
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pThreadProc);
XN_VALIDATE_OUTPUT_PTR(pThreadHandle);
// Create a thread via the OS
*pThreadHandle = CreateThread(NULL, 0, pThreadProc, pThreadParam, 0, NULL);
// Make sure it succeeded (return value is not null)
XN_VALIDATE_PTR(*pThreadHandle, XN_STATUS_ERROR);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSTerminateThread(XN_THREAD_HANDLE* pThreadHandle)
{
// Local function variables
XnBool bRetVal = FALSE;
XnStatus nRetVal = XN_STATUS_OK;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pThreadHandle);
// Make sure the actual thread handle isn't NULL
XN_RET_IF_NULL(*pThreadHandle, XN_STATUS_OS_INVALID_THREAD);
// Close the thread via the OS
bRetVal = TerminateThread(*pThreadHandle, 0);
// Make sure it succeeded (return value is true)
if (bRetVal != TRUE)
{
return (XN_STATUS_OS_THREAD_TERMINATION_FAILED);
}
// Close the handle
nRetVal = xnOSCloseThread(pThreadHandle);
XN_IS_STATUS_OK(nRetVal);
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSCloseThread(XN_THREAD_HANDLE* pThreadHandle)
{
// Local function variables
XnBool bRetVal = FALSE;
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_INPUT_PTR(pThreadHandle);
// Make sure the actual thread handle isn't NULL
XN_RET_IF_NULL(*pThreadHandle, XN_STATUS_OS_INVALID_THREAD);
// Close the thread via the OS
bRetVal = CloseHandle(*pThreadHandle);
// Make sure it succeeded (return value is true)
if (bRetVal != TRUE)
{
return (XN_STATUS_OS_THREAD_CLOSE_FAILED);
}
// Null the output thread
*pThreadHandle = NULL;
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSWaitForThreadExit(XN_THREAD_HANDLE ThreadHandle, XnUInt32 nMilliseconds)
{
// Local function variables
XnInt32 nRetVal = 0;
// Make sure the actual thread handle isn't NULL
XN_RET_IF_NULL(ThreadHandle, XN_STATUS_OS_INVALID_THREAD);
// Lock the mutex for a period if time (can be infinite)
nRetVal = WaitForSingleObject(ThreadHandle, nMilliseconds);
// Check the return value (WAIT_OBJECT_0 is OK)
if (nRetVal != WAIT_OBJECT_0)
{
// Handle the timeout failure
if (nRetVal == WAIT_TIMEOUT)
{
return (XN_STATUS_OS_THREAD_TIMEOUT);
}
else
{
return (XN_STATUS_OS_THREAD_WAIT_FAILED);
}
}
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnStatus xnOSSetThreadPriority(XN_THREAD_HANDLE ThreadHandle, XnThreadPriority nPriority)
{
int nWinPriority = 0;
switch (nPriority)
{
case XN_PRIORITY_CRITICAL:
nWinPriority = THREAD_PRIORITY_TIME_CRITICAL;
break;
case XN_PRIORITY_HIGH:
nWinPriority = THREAD_PRIORITY_HIGHEST;
break;
case XN_PRIORITY_LOW:
nWinPriority = THREAD_PRIORITY_LOWEST;
break;
case XN_PRIORITY_NORMAL:
nWinPriority = THREAD_PRIORITY_NORMAL;
break;
default:
XN_ASSERT(FALSE);
return XN_STATUS_OS_THREAD_UNSUPPORTED_PRIORITY;
}
if (!SetThreadPriority(ThreadHandle, nWinPriority))
{
return XN_STATUS_OS_THREAD_SET_PRIORITY_FAILED;
}
return XN_STATUS_OK;
}
XN_C_API XnStatus xnOSGetCurrentThreadID(XN_THREAD_ID* pThreadID)
{
// Validate the input/output pointers (to make sure none of them is NULL)
XN_VALIDATE_OUTPUT_PTR(pThreadID);
// Get the current thread id
*pThreadID = GetCurrentThreadId();
// All is good...
return (XN_STATUS_OK);
}
XN_C_API XnBool xnOSDoesThreadExistByID(XN_THREAD_ID threadId)
{
HANDLE h = OpenThread(READ_CONTROL, FALSE, threadId);
if (h == NULL)
{
return FALSE;
}
CloseHandle(h);
return TRUE;
}
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