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thread.cpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2009
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
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33
34#include <gecode/support.hh>
35
36namespace Gecode { namespace Support {
37
38 /*
39 * Threads
40 */
41
43 static Mutex* m = new Mutex;
44 return m;
45 }
46
48
49 void
51 while (true) {
52 // Execute runnable
53 {
54 Runnable* e;
55 m.acquire();
56 GECODE_ASSUME(r != NULL);
57 e=r; r=NULL;
58 m.release();
59 assert(e != NULL);
60 e->run();
61 if (e->todelete()) {
62 Terminator* t = e->terminator();
63 delete e;
64 if (t)
65 t->terminated();
66 }
67 }
68 // Put into idle stack
69 Thread::m()->acquire();
71 Thread::m()->release();
72 // Wait for next runnable
73 e.wait();
74 }
75 }
76
77}}
78
79// STATISTICS: support-any
A mutex for mutual exclausion among several threads.
Definition thread.hpp:96
void release(void)
Release the mutex.
Definition none.hpp:48
void acquire(void)
Acquire the mutex and possibly block.
Definition none.hpp:42
An interface for objects that can be run by a thread.
Definition thread.hpp:264
An interface for objects that can be called after a thread has terminated (after running the thread's...
Definition thread.hpp:251
virtual void terminated(void)=0
The function that is called when the thread has terminated.
void exec(void)
Infinite loop for execution.
Definition thread.cpp:50
Event e
Event to wait for next runnable object to execute.
Definition thread.hpp:306
Run * n
Next idle thread.
Definition thread.hpp:302
Runnable * r
Runnable object to execute.
Definition thread.hpp:304
Mutex m
Mutex for synchronization.
Definition thread.hpp:308
static Run * idle
Idle runners.
Definition thread.hpp:323
static Mutex * m(void)
Mutex for synchronization.
Definition thread.cpp:42
Support algorithms and datastructures
Gecode toplevel namespace
#define GECODE_ASSUME(p)
Assert certain property.
Definition macros.hpp:114