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%% options
copyright owner = Dirk Krause
copyright year = 2013-xxxx
SPDX-License-Identifier: BSD-3-Clause
%% header
#include <dk3conf.h>
#include <dk3types.h>
#include <dk3const.h>
#include <wx/wxprec.h>
#ifdef __BORLANDC__
#pragma hdrstop
#endif
#ifndef WX_PRECOMP
#include <wx/wx.h>
#endif
#include <wx/thread.h>
/** Protect code from concurrent execution, mainly for timer handlers.
In contrast to a critical section which delays execution of
code to avoid concurrent access to data this class skips
the execution of concurrent code.
*/
class DkWxProcessingController
{
protected:
/** Prevent concurrent access.
*/
wxMutex mxProtectProcessing;
/** Flag: Processing is running.
*/
bool bIsRunning;
public:
/** Default constructor.
*/
DkWxProcessingController();
/** Begin processing if not already running.
If the function returns true you must invoke endProcessing()
when your processing is finished.
@return true to start processing, false if processing is running.
*/
bool canBeginProcessing(void);
/** End processing. Call this function after finishing the
critical code.
*/
void endProcessing(void);
};
%% module
#include "dk3conf.h"
#include "DkWxProcessingController.h"
$!trace-include
DkWxProcessingController::DkWxProcessingController()
{
bIsRunning = false;
}
bool
DkWxProcessingController::canBeginProcessing(void)
{
bool back = false;
{
wxMutexLocker lock(mxProtectProcessing);
if(!(bIsRunning)) {
bIsRunning = true;
back = true;
}
}
return back;
}
void
DkWxProcessingController::endProcessing(void)
{
wxMutexLocker lock(mxProtectProcessing);
bIsRunning = false;
}
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