1 //===-- PThreadMutex.cpp ----------------------------------------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Created by Greg Clayton on 12/9/08. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "PThreadMutex.h" 14 15 #include "DNBTimer.h" 16 17 #if defined(DEBUG_PTHREAD_MUTEX_DEADLOCKS) 18 19 PThreadMutex::Locker::Locker(PThreadMutex &m, const char *function, 20 const char *file, const int line) 21 : m_pMutex(m.Mutex()), m_function(function), m_file(file), m_line(line), 22 m_lock_time(0) { 23 Lock(); 24 } 25 26 PThreadMutex::Locker::Locker(PThreadMutex *m, const char *function, 27 const char *file, const int line) 28 : m_pMutex(m ? m->Mutex() : NULL), m_function(function), m_file(file), 29 m_line(line), m_lock_time(0) { 30 Lock(); 31 } 32 33 PThreadMutex::Locker::Locker(pthread_mutex_t *mutex, const char *function, 34 const char *file, const int line) 35 : m_pMutex(mutex), m_function(function), m_file(file), m_line(line), 36 m_lock_time(0) { 37 Lock(); 38 } 39 40 PThreadMutex::Locker::~Locker() { Unlock(); } 41 42 void PThreadMutex::Locker::Lock() { 43 if (m_pMutex) { 44 m_lock_time = DNBTimer::GetTimeOfDay(); 45 if (::pthread_mutex_trylock(m_pMutex) != 0) { 46 fprintf(stdout, "::pthread_mutex_trylock (%8.8p) mutex is locked " 47 "(function %s in %s:%i), waiting...\n", 48 m_pMutex, m_function, m_file, m_line); 49 ::pthread_mutex_lock(m_pMutex); 50 fprintf(stdout, "::pthread_mutex_lock (%8.8p) succeeded after %6llu " 51 "usecs (function %s in %s:%i)\n", 52 m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, 53 m_file, m_line); 54 } 55 } 56 } 57 58 void PThreadMutex::Locker::Unlock() { 59 fprintf(stdout, "::pthread_mutex_unlock (%8.8p) had lock for %6llu usecs in " 60 "%s in %s:%i\n", 61 m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, m_file, 62 m_line); 63 ::pthread_mutex_unlock(m_pMutex); 64 } 65 66 #endif 67