Qt 4.8
qthreadpool_p.h
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41 
42 #ifndef QTHREADPOOL_P_H
43 #define QTHREADPOOL_P_H
44 
45 //
46 // W A R N I N G
47 // -------------
48 //
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
52 //
53 // We mean it.
54 //
55 //
56 
57 #include "QtCore/qmutex.h"
58 #include "QtCore/qwaitcondition.h"
59 #include "QtCore/qset.h"
60 #include "QtCore/qqueue.h"
61 #include "private/qobject_p.h"
62 
63 #ifndef QT_NO_THREAD
64 
66 
67 class QThreadPoolThread;
69 {
72 
73 public:
75 
76  bool tryStart(QRunnable *task);
77  void enqueueTask(QRunnable *task, int priority = 0);
78  int activeThreadCount() const;
79 
80  void tryToStartMoreThreads();
81  bool tooManyThreadsActive() const;
82 
83  void startThread(QRunnable *runnable = 0);
84  void reset();
85  bool waitForDone(int msecs = -1);
86  bool startFrontRunnable();
87  void stealRunnable(QRunnable *);
88 
89  mutable QMutex mutex;
90  QSet<QThreadPoolThread *> allThreads;
91  QQueue<QThreadPoolThread *> waitingThreads;
92  QQueue<QThreadPoolThread *> expiredThreads;
93  QList<QPair<QRunnable *, int> > queue;
95 
96  bool isExiting;
101 };
102 
104 
105 #endif // QT_NO_THREAD
106 #endif
bool tooManyThreadsActive() const
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
The QQueue class is a generic container that provides a queue.
Definition: qcontainerfwd.h:61
The QMutex class provides access serialization between threads.
Definition: qmutex.h:60
The QRunnable class is the base class for all runnable objects.
Definition: qrunnable.h:52
void stealRunnable(QRunnable *)
Searches for runnable in the queue, removes it from the queue and runs it if found.
The QThreadPool class manages a collection of QThreads.
Definition: qthreadpool.h:58
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
QQueue< QThreadPoolThread * > expiredThreads
Definition: qthreadpool_p.h:92
void reset()
Makes all threads exit, waits for each thread to exit and deletes it.
QSet< QThreadPoolThread * > allThreads
Definition: qthreadpool_p.h:90
#define Q_DECLARE_PUBLIC(Class)
Definition: qglobal.h:2477
void tryToStartMoreThreads()
QWaitCondition noActiveThreads
Definition: qthreadpool_p.h:94
bool startFrontRunnable()
Pulls a runnable from the front queue and runs it in the current thread.
int activeThreadCount() const
void enqueueTask(QRunnable *task, int priority=0)
#define class
void startThread(QRunnable *runnable=0)
QQueue< QThreadPoolThread * > waitingThreads
Definition: qthreadpool_p.h:91
QList< QPair< QRunnable *, int > > queue
Definition: qthreadpool_p.h:93
The QList class is a template class that provides lists.
Definition: qdatastream.h:62
bool tryStart(QRunnable *task)
bool waitForDone(int msecs=-1)