blob: ae103f1164f188428cd30960007b00c7782b3de8 (
plain)
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
|
/* -*- 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/.
*/
#ifndef INCLUDED_COMPHELPER_THREADPOOL_HXX
#define INCLUDED_COMPHELPER_THREADPOOL_HXX
#include <sal/config.h>
#include <salhelper/thread.hxx>
#include <osl/mutex.hxx>
#include <osl/conditn.hxx>
#include <rtl/ref.hxx>
#include <vector>
#include <comphelper/comphelperdllapi.h>
namespace comphelper
{
class COMPHELPER_DLLPUBLIC ThreadTask
{
public:
virtual ~ThreadTask() {}
virtual void doWork() = 0;
};
/// A very basic thread pool implementation
class COMPHELPER_DLLPUBLIC ThreadPool
{
public:
/// returns a pointer to a shared pool with optimal thread
/// count for the CPU
static ThreadPool& getSharedOptimalPool();
ThreadPool( sal_Int32 nWorkers );
virtual ~ThreadPool();
void pushTask( ThreadTask *pTask /* takes ownership */ );
void waitUntilEmpty();
void waitUntilWorkersDone();
private:
class ThreadWorker;
friend class ThreadWorker;
ThreadTask *waitForWork( osl::Condition &rNewWork );
ThreadTask *popWork();
osl::Mutex maGuard;
osl::Condition maTasksEmpty;
bool mbTerminate;
std::vector< rtl::Reference< ThreadWorker > > maWorkers;
std::vector< ThreadTask * > maTasks;
};
} // namespace comphelper
#endif // INCLUDED_COMPHELPER_THREADPOOL_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|