1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132 | /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <tools/TimerBasedTaskExecution.hxx>
#include <tools/AsynchronousTask.hxx>
#include <tools/time.hxx>
#include <osl/diagnose.h>
#include <sal/log.hxx>
#include <memory>
namespace sd::tools {
/** Used by the shared_ptr instead of the private destructor.
*/
class TimerBasedTaskExecution::Deleter
{
public:
void operator() (TimerBasedTaskExecution* pObject)
{
delete pObject;
}
};
std::shared_ptr<TimerBasedTaskExecution> TimerBasedTaskExecution::Create (
const std::shared_ptr<AsynchronousTask>& rpTask,
sal_uInt32 nMillisecondsBetweenSteps,
sal_uInt32 nMaxTimePerStep)
{
std::shared_ptr<TimerBasedTaskExecution> pExecution(
new TimerBasedTaskExecution(rpTask,nMillisecondsBetweenSteps,nMaxTimePerStep),
Deleter());
// Let the new object have a shared_ptr to itself, so that it can
// release itself when the AsynchronousTask has been executed
// completely.
if (pExecution->mpTask != nullptr)
pExecution->mpSelf = pExecution;
return pExecution;
}
void TimerBasedTaskExecution::Release()
{
maTimer.Stop();
mpSelf.reset();
}
//static
void TimerBasedTaskExecution::ReleaseTask (
const std::weak_ptr<TimerBasedTaskExecution>& rpExecution)
{
if ( rpExecution.expired())
return;
try
{
std::shared_ptr<tools::TimerBasedTaskExecution> pExecution (rpExecution);
pExecution->Release();
}
catch (const std::bad_weak_ptr&)
{
// When a bad_weak_ptr has been thrown then the object pointed
// to by rpTask has been released right after we checked that it
// still existed. Too bad, but that means, that we have nothing
// more do.
}
}
TimerBasedTaskExecution::TimerBasedTaskExecution (
const std::shared_ptr<AsynchronousTask>& rpTask,
sal_uInt32 nMillisecondsBetweenSteps,
sal_uInt32 nMaxTimePerStep)
: mpTask(rpTask),
maTimer(),
mpSelf(),
mnMaxTimePerStep(nMaxTimePerStep)
{
maTimer.SetInvokeHandler( LINK(this,TimerBasedTaskExecution,TimerCallback) );
maTimer.SetTimeout(nMillisecondsBetweenSteps);
maTimer.Start();
}
TimerBasedTaskExecution::~TimerBasedTaskExecution()
{
maTimer.Stop();
}
IMPL_LINK_NOARG(TimerBasedTaskExecution, TimerCallback, Timer *, void)<--- syntax error
{
if (mpTask == nullptr)
return;
if (mpTask->HasNextStep())
{
// Execute as many steps as fit into the time span of length
// mnMaxTimePerStep. Note that the last step may take longer
// than allowed.
sal_uInt32 nStartTime (::tools::Time( ::tools::Time::SYSTEM ).GetMSFromTime());
SAL_INFO("sd.tools", OSL_THIS_FUNC << ": starting TimerBasedTaskExecution at " << nStartTime);
do
{
mpTask->RunNextStep();
sal_uInt32 nDuration (::tools::Time( ::tools::Time::SYSTEM ).GetMSFromTime()-nStartTime);
SAL_INFO("sd.tools", OSL_THIS_FUNC << ": executed step in " << nDuration);
if (nDuration > mnMaxTimePerStep)
break;
}
while (mpTask->HasNextStep());
SAL_INFO("sd.tools", OSL_THIS_FUNC << ": TimerBasedTaskExecution sleeping");
maTimer.Start();
}
else
mpSelf.reset();
}
} // end of namespace ::sd::tools
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|