Qore Programming Language  1.12.2
QoreCondition.h
1 /* -*- mode: c++; indent-tabs-mode: nil -*- */
2 /*
3  QoreCondition.h
4 
5  Qore Programming Language
6 
7  Copyright (C) 2005 - 2022 Qore Technologies, s.r.o.
8 
9  Permission is hereby granted, free of charge, to any person obtaining a
10  copy of this software and associated documentation files (the "Software"),
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14  Software is furnished to do so, subject to the following conditions:
15 
16  The above copyright notice and this permission notice shall be included in
17  all copies or substantial portions of the Software.
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19  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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26 
27  Note that the Qore library is released under a choice of three open-source
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29  information.
30 */
31 
32 #ifndef _QORE_QORECONDITION_H
33 
34 #define _QORE_QORECONDITION_H
35 
36 #include <pthread.h>
37 #include <sys/time.h>
38 
39 #include <qore/QoreThreadLock.h>
40 
42 
46 public:
48  DLLEXPORT QoreCondition();
49 
51  DLLEXPORT ~QoreCondition();
52 
54  DLLEXPORT int signal();
55 
57  DLLEXPORT int broadcast();
58 
60 
65  DLLEXPORT int wait(pthread_mutex_t* m);
66 
68 
76  DLLEXPORT int wait(pthread_mutex_t* m, int timeout_ms);
77 
79 
85  DLLEXPORT int wait2(pthread_mutex_t* m, int64 timeout_ms);
86 
88 
93  DLLLOCAL int wait(QoreThreadLock* l) {
94  return wait(&l->ptm_lock);
95  }
96 
98 
106  DLLLOCAL int wait(QoreThreadLock* l, int timeout_ms) {
107  return wait(&l->ptm_lock, timeout_ms);
108  }
109 
111 
117  DLLLOCAL int wait2(QoreThreadLock* l, int64 timeout_ms) {
118  return wait2(&l->ptm_lock, timeout_ms);
119  }
120 
122 
127  DLLLOCAL int wait(QoreThreadLock& l) {
128  return wait(&l);
129  }
130 
132 
140  DLLLOCAL int wait(QoreThreadLock& l, int timeout_ms) {
141  return wait(&l, timeout_ms);
142  }
143 
145 
151  DLLLOCAL int wait2(QoreThreadLock& l, int64 timeout_ms) {
152  return wait2(&l, timeout_ms);
153  }
154 
155 private:
157  pthread_cond_t c;
158 
160  DLLLOCAL QoreCondition(const QoreCondition&);
161 
163  DLLLOCAL QoreCondition& operator=(const QoreCondition&);
164 };
165 
166 #endif // QORE_CONDITION
a thread condition class implementing a wrapper for pthread_cond_t
Definition: QoreCondition.h:45
DLLEXPORT ~QoreCondition()
destroys the condition object
DLLEXPORT int wait(pthread_mutex_t *m)
blocks a thread on a mutex until the condition is signaled
DLLEXPORT int wait2(pthread_mutex_t *m, int64 timeout_ms)
blocks a thread on a mutex for a certain number of milliseconds until the condition is signaled
DLLEXPORT int signal()
signals a single waiting thread to wake up
DLLEXPORT int broadcast()
singles all threads blocked on this condition to wake up
DLLEXPORT QoreCondition()
creates the condition object
provides a mutually-exclusive thread lock
Definition: QoreThreadLock.h:49
long long int64
64bit integer type, cannot use int64_t here since it breaks the API on some 64-bit systems due to equ...
Definition: common.h:260