PThreadMutex.cpp revision 24943d2ee8bfaa7cf5893e4709143924157a5c1e 
1//===-- PThreadMutex.cpp ----------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10//  Created by Greg Clayton on 12/9/08.
11//
12//===----------------------------------------------------------------------===//
13
14#include "PThreadMutex.h"
15
16// C Includes
17// C++ Includes
18// Other libraries and framework includes
19// Project includes
20#include "DNBTimer.h"
21
22#if defined (DEBUG_PTHREAD_MUTEX_DEADLOCKS)
23
24PThreadMutex::Locker::Locker(PThreadMutex& m, const char *function, const char *file, const int line) :
25    m_pMutex(m.Mutex()),
26    m_function(function),
27    m_file(file),
28    m_line(line),
29    m_lock_time(0)
30{
31    Lock();
32}
33
34PThreadMutex::Locker::Locker(PThreadMutex* m, const char *function, const char *file, const int line) :
35    m_pMutex(m ? m->Mutex() : NULL),
36    m_function(function),
37    m_file(file),
38    m_line(line),
39    m_lock_time(0)
40{
41    Lock();
42}
43
44PThreadMutex::Locker::Locker(pthread_mutex_t *mutex, const char *function, const char *file, const int line) :
45    m_pMutex(mutex),
46    m_function(function),
47    m_file(file),
48    m_line(line),
49    m_lock_time(0)
50{
51    Lock();
52}
53
54
55PThreadMutex::Locker::~Locker()
56{
57    Unlock();
58}
59
60
61void
62PThreadMutex::Locker::Lock()
63{
64    if (m_pMutex)
65    {
66        m_lock_time = DNBTimer::GetTimeOfDay();
67        if (::pthread_mutex_trylock (m_pMutex) != 0)
68        {
69            fprintf(stdout, "::pthread_mutex_trylock (%8.8p) mutex is locked (function %s in %s:%i), waiting...\n", m_pMutex, m_function, m_file, m_line);
70            ::pthread_mutex_lock (m_pMutex);
71            fprintf(stdout, "::pthread_mutex_lock (%8.8p) succeeded after %6llu usecs (function %s in %s:%i)\n", m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, m_file, m_line);
72        }
73    }
74}
75
76
77void
78PThreadMutex::Locker::Unlock()
79{
80    fprintf(stdout, "::pthread_mutex_unlock (%8.8p) had lock for %6llu usecs in %s in %s:%i\n", m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, m_file, m_line);
81    ::pthread_mutex_unlock (m_pMutex);
82}
83
84#endif
85