mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-24 09:29:42 +00:00
c700c4d161
Tested this by #if 0'ing out the pthreads implementation, which indicated that this fallback was not currently compiling successfully and applying this patch resolves that. Patch by Andy Chien. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@220969 91177308-0d34-0410-b5e6-96231b3b80d8
52 lines
1.5 KiB
PHP
52 lines
1.5 KiB
PHP
//= llvm/Support/Unix/RWMutex.inc - Unix Reader/Writer Mutual Exclusion Lock =//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file implements the Unix specific (non-pthread) RWMutex class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
//=== WARNING: Implementation here must contain only generic UNIX code that
|
|
//=== is guaranteed to work on *all* UNIX variants.
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/Support/Mutex.h"
|
|
|
|
namespace llvm {
|
|
|
|
using namespace sys;
|
|
|
|
// This naive implementation treats readers the same as writers. This
|
|
// will therefore deadlock if a thread tries to acquire a read lock
|
|
// multiple times.
|
|
|
|
RWMutexImpl::RWMutexImpl() : data_(new MutexImpl(false)) { }
|
|
|
|
RWMutexImpl::~RWMutexImpl() {
|
|
delete static_cast<MutexImpl *>(data_);
|
|
}
|
|
|
|
bool RWMutexImpl::reader_acquire() {
|
|
return static_cast<MutexImpl *>(data_)->acquire();
|
|
}
|
|
|
|
bool RWMutexImpl::reader_release() {
|
|
return static_cast<MutexImpl *>(data_)->release();
|
|
}
|
|
|
|
bool RWMutexImpl::writer_acquire() {
|
|
return static_cast<MutexImpl *>(data_)->acquire();
|
|
}
|
|
|
|
bool RWMutexImpl::writer_release() {
|
|
return static_cast<MutexImpl *>(data_)->release();
|
|
}
|
|
|
|
}
|