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
|
// -*- C++ -*-
/**
* @file Condition_Recursive_Thread_Mutex.cpp
*
* Originally in Synch.cpp
*
* @author Douglas C. Schmidt <schmidt@cs.wustl.edu>
*/
#include "ace/Condition_Recursive_Thread_Mutex.h"
#if defined (ACE_HAS_THREADS)
#if !defined (__ACE_INLINE__)
#include "ace/Condition_Recursive_Thread_Mutex.inl"
#endif /* __ACE_INLINE__ */
#include "ace/Log_Category.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_ALLOC_HOOK_DEFINE (ACE_Condition<ACE_Recursive_Thread_Mutex>)
void
ACE_Condition<ACE_Recursive_Thread_Mutex>::dump (void) const
{
#if defined (ACE_HAS_DUMP)
// ACE_TRACE ("ACE_Condition<MUTEX>::dump");
ACELIB_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
// No dump method for ACE_cond_t even in emulated mode.
// cond_.dump ();
this->mutex_.dump ();
ACELIB_DEBUG ((LM_DEBUG, ACE_TEXT ("\n")));
ACELIB_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}
ACE_Condition<ACE_Recursive_Thread_Mutex>::ACE_Condition (ACE_Recursive_Thread_Mutex &m)
: mutex_ (m)
{
if (ACE_OS::cond_init (&this->cond_) != 0)
ACELIB_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_Condition<ACE_Recursive_Thread_Mutex>::ACE_Condition<ACE_Recursive_Thread_Mutex>")));
}
ACE_Condition<ACE_Recursive_Thread_Mutex>::ACE_Condition (ACE_Recursive_Thread_Mutex &m,
const ACE_Condition_Attributes &attributes)
: mutex_ (m)
{
if (ACE_OS::cond_init (&this->cond_,
const_cast<ACE_condattr_t &> (attributes.attributes ())) != 0)
ACELIB_ERROR ((LM_ERROR, ACE_TEXT ("%p\n"),
ACE_TEXT ("ACE_Condition<ACE_Recursive_Thread_Mutex>::ACE_Condition<ACE_Recursive_Thread_Mutex>")));
}
ACE_Condition<ACE_Recursive_Thread_Mutex>::~ACE_Condition (void)
{
this->remove ();
}
int
ACE_Condition<ACE_Recursive_Thread_Mutex>::wait (const ACE_Time_Value *abstime)
{
return this->wait (this->mutex_, abstime);
}
int
ACE_Condition<ACE_Recursive_Thread_Mutex>::wait (ACE_Recursive_Thread_Mutex &mutex,
const ACE_Time_Value *abstime)
{
ACE_recursive_mutex_state mutex_state_holder;
ACE_recursive_thread_mutex_t &recursive_mutex = mutex.lock ();
if (ACE_OS::recursive_mutex_cond_unlock (&recursive_mutex,
mutex_state_holder) == -1)
return -1;
// We wait on the condition, specifying the nesting mutex. For platforms
// with ACE_HAS_RECURSIVE_MUTEXES, this is the recursive mutex itself,
// and is the same as recursive_mutex, above. The caller should have been
// holding the lock on entry to this method, and it is still held.
// For other platforms, this is the nesting mutex that guards the
// ACE_recursive_mutex_t internals, and recursive_mutex_cond_unlock()
// returned with the lock held, but waiters primed and waiting to be
// released. At cond_wait below, the mutex will be released.
// On return, it will be reacquired.
int const result = abstime == 0
? ACE_OS::cond_wait (&this->cond_,
&mutex.get_nesting_mutex ())
: ACE_OS::cond_timedwait (&this->cond_,
&mutex.get_nesting_mutex (),
const_cast <ACE_Time_Value *> (abstime));
// We are holding the mutex, whether the wait succeeded or failed.
// Stash errno (in case it failed) and then we need to reset the
// recursive mutex state to what it was on entry to this method.
// Resetting it may require a wait for another thread to release
// the ACE_recursive_thread_mutex_t if this is a platform without
// ACE_HAS_RECURSIVE_MUTEXES, and recursive_mutex_cond_relock() takes
// care of that.
{
ACE_Errno_Guard error (errno);
ACE_OS::recursive_mutex_cond_relock (&recursive_mutex,
mutex_state_holder);
}
return result;
}
ACE_END_VERSIONED_NAMESPACE_DECL
#endif /* ACE_HAS_THREADS */
|
