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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 
Locker(PThreadMutex & m,const char * function,const char * file,const int line)24 PThreadMutex::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 
Locker(PThreadMutex * m,const char * function,const char * file,const int line)34 PThreadMutex::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 
Locker(pthread_mutex_t * mutex,const char * function,const char * file,const int line)44 PThreadMutex::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 
~Locker()55 PThreadMutex::Locker::~Locker()
56 {
57     Unlock();
58 }
59 
60 
61 void
Lock()62 PThreadMutex::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 
77 void
Unlock()78 PThreadMutex::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