Support: make LLVM Mutexes STL-compatible

Use lock/unlock() convention instead of acquire/release().

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@216336 91177308-0d34-0410-b5e6-96231b3b80d8

include/llvm/Support/Mutex.h

@@ -86,16 +86,17 @@ namespace llvm
     /// indicates whether this mutex should become a no-op when we're not
     /// running in multithreaded mode.
     template<bool mt_only>
-    class SmartMutex : public MutexImpl {
+    class SmartMutex {
+      MutexImpl impl;
       unsigned acquired;
       bool recursive;
     public:
       explicit SmartMutex(bool rec = true) :
-        MutexImpl(rec), acquired(0), recursive(rec) { }
+        impl(rec), acquired(0), recursive(rec) { }
 
-      bool acquire() {
+      bool lock() {
         if (!mt_only || llvm_is_multithreaded()) {
-          return MutexImpl::acquire();
+          return impl.acquire();
         } else {
           // Single-threaded debugging code.  This would be racy in
           // multithreaded mode, but provides not sanity checks in single
@@ -106,9 +107,9 @@ namespace llvm
         }
       }
 
-      bool release() {
+      bool unlock() {
         if (!mt_only || llvm_is_multithreaded()) {
-          return MutexImpl::release();
+          return impl.release();
         } else {
           // Single-threaded debugging code.  This would be racy in
           // multithreaded mode, but provides not sanity checks in single
@@ -120,9 +121,9 @@ namespace llvm
         }
       }
 
-      bool tryacquire() {
+      bool try_lock() {
         if (!mt_only || llvm_is_multithreaded())
-          return MutexImpl::tryacquire();
+          return impl.tryacquire();
         else return true;
       }
 
@@ -140,11 +141,11 @@ namespace llvm
 
     public:
       SmartScopedLock(SmartMutex<mt_only>& m) : mtx(m) {
-        mtx.acquire();
+        mtx.lock();
       }
 
       ~SmartScopedLock() {
-        mtx.release();
+        mtx.unlock();
       }
     };
 

include/llvm/Support/MutexGuard.h

@@ -29,8 +29,8 @@ namespace llvm {
     MutexGuard(const MutexGuard &) LLVM_DELETED_FUNCTION;
     void operator=(const MutexGuard &) LLVM_DELETED_FUNCTION;
   public:
-    MutexGuard(sys::Mutex &m) : M(m) { M.acquire(); }
-    ~MutexGuard() { M.release(); }
+    MutexGuard(sys::Mutex &m) : M(m) { M.lock(); }
+    ~MutexGuard() { M.unlock(); }
     /// holds - Returns true if this locker instance holds the specified lock.
     /// This is mostly used in assertions to validate that the correct mutex
     /// is held.

include/llvm/Support/RWMutex.h

@@ -85,14 +85,15 @@ namespace llvm
     /// indicates whether this mutex should become a no-op when we're not
     /// running in multithreaded mode.
     template<bool mt_only>
-    class SmartRWMutex : public RWMutexImpl {
+    class SmartRWMutex {
+      RWMutexImpl impl;
       unsigned readers, writers;
     public:
-      explicit SmartRWMutex() : RWMutexImpl(), readers(0), writers(0) { }
+      explicit SmartRWMutex() : impl(), readers(0), writers(0) { }
 
-      bool reader_acquire() {
+      bool lock_shared() {
         if (!mt_only || llvm_is_multithreaded())
-          return RWMutexImpl::reader_acquire();
+          return impl.reader_acquire();
 
         // Single-threaded debugging code.  This would be racy in multithreaded
         // mode, but provides not sanity checks in single threaded mode.
@@ -100,9 +101,9 @@ namespace llvm
         return true;
       }
 
-      bool reader_release() {
+      bool unlock_shared() {
         if (!mt_only || llvm_is_multithreaded())
-          return RWMutexImpl::reader_release();
+          return impl.reader_release();
 
         // Single-threaded debugging code.  This would be racy in multithreaded
         // mode, but provides not sanity checks in single threaded mode.
@@ -111,9 +112,9 @@ namespace llvm
         return true;
       }
 
-      bool writer_acquire() {
+      bool lock() {
         if (!mt_only || llvm_is_multithreaded())
-          return RWMutexImpl::writer_acquire();
+          return impl.writer_acquire();
 
         // Single-threaded debugging code.  This would be racy in multithreaded
         // mode, but provides not sanity checks in single threaded mode.
@@ -122,9 +123,9 @@ namespace llvm
         return true;
       }
 
-      bool writer_release() {
+      bool unlock() {
         if (!mt_only || llvm_is_multithreaded())
-          return RWMutexImpl::writer_release();
+          return impl.writer_release();
 
         // Single-threaded debugging code.  This would be racy in multithreaded
         // mode, but provides not sanity checks in single threaded mode.
@@ -145,11 +146,11 @@ namespace llvm
       SmartRWMutex<mt_only>& mutex;
 
       explicit SmartScopedReader(SmartRWMutex<mt_only>& m) : mutex(m) {
-        mutex.reader_acquire();
+        mutex.lock_shared();
       }
 
       ~SmartScopedReader() {
-        mutex.reader_release();
+        mutex.unlock_shared();
       }
     };
     typedef SmartScopedReader<false> ScopedReader;
@@ -160,11 +161,11 @@ namespace llvm
       SmartRWMutex<mt_only>& mutex;
 
       explicit SmartScopedWriter(SmartRWMutex<mt_only>& m) : mutex(m) {
-        mutex.writer_acquire();
+        mutex.lock();
       }
 
       ~SmartScopedWriter() {
-        mutex.writer_release();
+        mutex.unlock();
       }
     };
     typedef SmartScopedWriter<false> ScopedWriter;