PThreadMutex.cpp
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//===-- PThreadMutex.cpp ----------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Created by Greg Clayton on 12/9/08.
//
//===----------------------------------------------------------------------===//
#include "PThreadMutex.h"
#include "DNBTimer.h"
#if defined(DEBUG_PTHREAD_MUTEX_DEADLOCKS)
PThreadMutex::Locker::Locker(PThreadMutex &m, const char *function,
const char *file, const int line)
: m_pMutex(m.Mutex()), m_function(function), m_file(file), m_line(line),
m_lock_time(0) {
Lock();
}
PThreadMutex::Locker::Locker(PThreadMutex *m, const char *function,
const char *file, const int line)
: m_pMutex(m ? m->Mutex() : NULL), m_function(function), m_file(file),
m_line(line), m_lock_time(0) {
Lock();
}
PThreadMutex::Locker::Locker(pthread_mutex_t *mutex, const char *function,
const char *file, const int line)
: m_pMutex(mutex), m_function(function), m_file(file), m_line(line),
m_lock_time(0) {
Lock();
}
PThreadMutex::Locker::~Locker() { Unlock(); }
void PThreadMutex::Locker::Lock() {
if (m_pMutex) {
m_lock_time = DNBTimer::GetTimeOfDay();
if (::pthread_mutex_trylock(m_pMutex) != 0) {
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);
::pthread_mutex_lock(m_pMutex);
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);
}
}
}
void PThreadMutex::Locker::Unlock() {
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);
::pthread_mutex_unlock(m_pMutex);
}
#endif