bf110d40ef
Seem UBSAN doesn't like my forced reinterpret_cast to set the Idles
Link in the Timer class. Now there are two possible solution:
1. convert all (DECL|IMPL).*_LINK call sites to use a Timer* or
2. split the inheritance of Idle from Timer again to maintain
different Link<>s and move all common code into a TimerBase.
While the 1st is more correct, the 2nd has a better indicator for
Idles. This implements the first solution.
And while at it, this also converts all call sites of SetTimeoutHdl
and SetIdleHdl to SetInvokeHandler and gets rid of some local Link
objects, which are just passed to the SetInvokeHandler call.
It also introduces ClearInvokeHandler() and replaces the respective
call sites of SetInvokeHandler( Link<Timer *, void>() ).
Change-Id: I40c4167b1493997b7f136add4dad2f4ff5504b69
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <sal/config.h>
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#include <svtools/filechangedchecker.hxx>
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FileChangedChecker::FileChangedChecker(const OUString& rFilename,
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const ::std::function<void ()>& rCallback)
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: mIdle("SVTools FileChangedChecker Idle")
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, mFileName(rFilename)
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, mLastModTime()
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, mpCallback(rCallback)
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{
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// Get the curren last file modified Status
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getCurrentModTime(mLastModTime);
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// associate the callback function for the Idle
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mIdle.SetInvokeHandler(LINK(this, FileChangedChecker, TimerHandler));
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//start the timer
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resetTimer();
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}
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void FileChangedChecker::resetTimer()
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{
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//Start the Idle if it's not active
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if(!mIdle.IsActive())
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mIdle.Start();
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// Set lowest Priority
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mIdle.SetPriority(TaskPriority::LOWEST);
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}
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bool FileChangedChecker::getCurrentModTime(TimeValue& o_rValue) const
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{
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// Need a Directory item to fetch file status
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osl::DirectoryItem aItem;
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osl::DirectoryItem::get(mFileName, aItem);
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// Retrieve the status - we are only interested in last File
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// Modified time
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osl::FileStatus aStatus( osl_FileStatus_Mask_ModifyTime );
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if( osl::FileBase::E_None != aItem.getFileStatus(aStatus) )
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return false;
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o_rValue = aStatus.getModifyTime();
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return true;
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}
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bool FileChangedChecker::hasFileChanged()
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{
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// Get the current file Status
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TimeValue newTime={0,0};
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if( !getCurrentModTime(newTime) )
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return true; // well. hard to answer correctly here ...
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// Check if the seconds time stamp has any difference
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// If so, then our file has changed meanwhile
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if( newTime.Seconds != mLastModTime.Seconds ||
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newTime.Nanosec != mLastModTime.Nanosec )
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{
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// Since the file has changed, set the new status as the file status and
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// return True
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mLastModTime = newTime ;
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return true;
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}
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else
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return false;
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}
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IMPL_LINK_NOARG(FileChangedChecker, TimerHandler, Timer *, void)
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{
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// If the file has changed, then update the graphic in the doc
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SAL_INFO("svtools", "Timeout Called");
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if(hasFileChanged())
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{
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SAL_INFO("svtools", "File modified");
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mpCallback();
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}
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// Reset the Idle in any case
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resetTimer();
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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