b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
121 lines
2.9 KiB
C++
121 lines
2.9 KiB
C++
//===-- PThreadMutex.h ------------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// Created by Greg Clayton on 6/16/07.
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//
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//===----------------------------------------------------------------------===//
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#ifndef __PThreadMutex_h__
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#define __PThreadMutex_h__
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#include <assert.h>
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#include <pthread.h>
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#include <stdint.h>
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//#define DEBUG_PTHREAD_MUTEX_DEADLOCKS 1
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#if defined(DEBUG_PTHREAD_MUTEX_DEADLOCKS)
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#define PTHREAD_MUTEX_LOCKER(var, mutex) \
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PThreadMutex::Locker var(mutex, __FUNCTION__, __FILE__, __LINE__)
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#else
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#define PTHREAD_MUTEX_LOCKER(var, mutex) PThreadMutex::Locker var(mutex)
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#endif
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class PThreadMutex {
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public:
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class Locker {
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public:
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#if defined(DEBUG_PTHREAD_MUTEX_DEADLOCKS)
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Locker(PThreadMutex &m, const char *function, const char *file, int line);
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Locker(PThreadMutex *m, const char *function, const char *file, int line);
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Locker(pthread_mutex_t *mutex, const char *function, const char *file,
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int line);
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~Locker();
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void Lock();
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void Unlock();
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#else
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Locker(PThreadMutex &m) : m_pMutex(m.Mutex()) { Lock(); }
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Locker(PThreadMutex *m) : m_pMutex(m ? m->Mutex() : NULL) { Lock(); }
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Locker(pthread_mutex_t *mutex) : m_pMutex(mutex) { Lock(); }
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void Lock() {
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if (m_pMutex)
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::pthread_mutex_lock(m_pMutex);
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}
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void Unlock() {
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if (m_pMutex)
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::pthread_mutex_unlock(m_pMutex);
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}
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~Locker() { Unlock(); }
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#endif
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// unlock any the current mutex and lock the new one if it is valid
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void Reset(pthread_mutex_t *pMutex = NULL) {
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Unlock();
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m_pMutex = pMutex;
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Lock();
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}
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pthread_mutex_t *m_pMutex;
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#if defined(DEBUG_PTHREAD_MUTEX_DEADLOCKS)
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const char *m_function;
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const char *m_file;
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int m_line;
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uint64_t m_lock_time;
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#endif
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};
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PThreadMutex() {
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int err;
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err = ::pthread_mutex_init(&m_mutex, NULL);
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assert(err == 0);
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}
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PThreadMutex(int type) {
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int err;
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::pthread_mutexattr_t attr;
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err = ::pthread_mutexattr_init(&attr);
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assert(err == 0);
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err = ::pthread_mutexattr_settype(&attr, type);
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assert(err == 0);
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err = ::pthread_mutex_init(&m_mutex, &attr);
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assert(err == 0);
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err = ::pthread_mutexattr_destroy(&attr);
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assert(err == 0);
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}
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~PThreadMutex() {
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int err;
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err = ::pthread_mutex_destroy(&m_mutex);
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if (err != 0) {
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err = Unlock();
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if (err == 0)
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::pthread_mutex_destroy(&m_mutex);
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}
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}
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pthread_mutex_t *Mutex() { return &m_mutex; }
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int Lock() { return ::pthread_mutex_lock(&m_mutex); }
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int Unlock() { return ::pthread_mutex_unlock(&m_mutex); }
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protected:
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pthread_mutex_t m_mutex;
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};
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#endif
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