llvm-6502/include/llvm/Support/MutexGuard.h
John Criswell 4046846d2c Updated the last two header files so that they are configured with
AC_CONFIG_HEADERS.  This should prevent LLVM from needlessly re-compiling
on a re-configure.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@16510 91177308-0d34-0410-b5e6-96231b3b80d8
2004-09-24 21:19:06 +00:00

43 lines
1.4 KiB
C++

//===-- Support/ThreadSupport.h - Generic threading support -----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines platform-agnostic interfaces that can be used to write
// multi-threaded programs. Autoconf is used to chose the correct
// implementation of these interfaces, or default to a non-thread-capable system
// if no matching system support is available.
//
//===----------------------------------------------------------------------===//
#ifndef SUPPORT_THREADSUPPORT_H
#define SUPPORT_THREADSUPPORT_H
#undef HAVE_PTHREAD_MUTEX_LOCK
#ifdef HAVE_PTHREAD_MUTEX_LOCK
#include "llvm/Support/ThreadSupport-PThreads.h"
#else
#include "llvm/Support/ThreadSupport-NoSupport.h"
#endif // If no system support is available
namespace llvm {
/// MutexLocker - Instances of this class acquire a given Lock when
/// constructed and hold that lock until destruction.
///
class MutexLocker {
Mutex &M;
MutexLocker(const MutexLocker &); // DO NOT IMPLEMENT
void operator=(const MutexLocker &); // DO NOT IMPLEMENT
public:
MutexLocker(Mutex &m) : M(m) { M.acquire(); }
~MutexLocker() { M.release(); }
};
}
#endif // SUPPORT_THREADSUPPORT_H