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
|
// $Id: thread_specific.h 80826 2008-03-04 14:51:23Z wotte $
#ifndef ACE_THREAD_SPECIFIC_H
#include "ace/Guard_T.h"
#include "ace/Thread_Mutex.h"
// Define a class that will be stored in thread-specific data. Note
// that as far as this class is concerned it's just a regular C++
// class. The ACE_TSS wrapper transparently ensures that objects of
// this class will be placed in thread-specific storage. All calls on
// ACE_TSS::operator->() are delegated to the appropriate method in
// the Errno class.
class Errno
{
public:
int error (void) { return this->errno_; }
void error (int i) { this->errno_ = i; }
int line (void) { return this->lineno_; }
void line (int l) { this->lineno_ = l; }
// Errno::flags_ is a static variable, so we've got to protect it
// with a mutex since it isn't kept in thread-specific storage.
int flags (void)
{
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, Errno::lock_, -1);
return Errno::flags_;
}
void flags (int f)
{
ACE_GUARD (ACE_Thread_Mutex, ace_mon, Errno::lock_);
Errno::flags_ = f;
}
private:
// = errno_ and lineno_ will be thread-specific data so they don't
// need a lock.
int errno_;
int lineno_;
static int flags_;
#if defined (ACE_HAS_THREADS)
// flags_ needs a lock.
static ACE_Thread_Mutex lock_;
#endif /* ACE_HAS_THREADS */
};
#endif /* ACE_THREAD_SPECIFIC_H */
|
