For PR540:

This patch completes the changes for making lli thread-safe. Here's the list
of changes:
* The Support/ThreadSupport* files were removed and replaced with the
  MutexGuard.h file since all ThreadSupport* declared was a Mutex Guard.
  The implementation of MutexGuard.h is now based on sys::Mutex which hides
  its implementation and makes it unnecessary to have the -NoSupport.h and
  -PThreads.h versions of ThreadSupport.

* All places in ExecutionEngine that previously referred to "Mutex" now
  refer to sys::Mutex

* All places in ExecutionEngine that previously referred to "MutexLocker"
  now refer to MutexGuard (this is frivolous but I believe the technically
  correct name for such a class is "Guard" not a "Locker").

These changes passed all of llvm-test. All we need now are some test cases
that actually use multiple threads.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@22404 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 0 insertions, 65 deletions

diff --git a/include/llvm/Support/ThreadSupport-PThreads.h b/include/llvm/Support/ThreadSupport-PThreads.h
deleted file mode 100644
index 84c6fac588..0000000000
--- a/include/llvm/Support/ThreadSupport-PThreads.h
+++ /dev/null
@@ -1,65 +0,0 @@
-//===-- llvm/Support/ThreadSupport-PThreads.h - PThreads 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 pthreads implementations of the generic threading
-// mechanisms.  Users should never #include this file directly!
-//
-//===----------------------------------------------------------------------===//
-
-// Users should never #include this file directly!  As such, no include guards
-// are needed.
-
-#ifndef LLVM_SUPPORT_THREADSUPPORT_H
-#error "Code should not #include Support/ThreadSupport/PThreads.h directly!"
-#endif
-
-#include <pthread.h>
-
-namespace llvm {
-
-  /// Mutex - This class allows user code to protect variables shared between
-  /// threads.  It implements a "recursive" mutex, to simplify user code.
-  ///
-  class Mutex {
-    pthread_mutex_t mutex;
-    Mutex(const Mutex &);           // DO NOT IMPLEMENT
-    void operator=(const Mutex &);  // DO NOT IMPLEMENT
-  public:
-    Mutex() {
-      // Initialize the mutex as a recursive mutex
-      pthread_mutexattr_t Attr;
-      int errorcode = pthread_mutexattr_init(&Attr);
-      assert(errorcode == 0);
-
-      errorcode = pthread_mutexattr_settype(&Attr, PTHREAD_MUTEX_RECURSIVE);
-      assert(errorcode == 0);
-
-      errorcode = pthread_mutex_init(&mutex, &Attr);
-      assert(errorcode == 0);
-
-      errorcode = pthread_mutexattr_destroy(&Attr);
-      assert(errorcode == 0);
-    }
-
-    ~Mutex() {
-      int errorcode = pthread_mutex_destroy(&mutex);
-      assert(errorcode == 0);
-    }
-
-    void acquire () {
-      int errorcode = pthread_mutex_lock(&mutex);
-      assert(errorcode == 0);
-    }
-
-    void release () {
-      int errorcode = pthread_mutex_unlock(&mutex);
-      assert(errorcode == 0);
-    }
-  };
-} // end namespace llvm