Initial import of lldb

Change-Id: Ib244e837bee349effa12b2ff6ffffbe3d730e929

external/bsd/llvm/dist/lldb/tools/debugserver/source/PThreadMutex.cpp

@@ -0,0 +1,84 @@
+//===-- PThreadMutex.cpp ----------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Created by Greg Clayton on 12/9/08.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PThreadMutex.h"
+
+// C Includes
+// C++ Includes
+// Other libraries and framework includes
+// Project includes
+#include "DNBTimer.h"
+
+#if defined (DEBUG_PTHREAD_MUTEX_DEADLOCKS)
+
+PThreadMutex::Locker::Locker(PThreadMutex& m, const char *function, const char *file, const int line) :
+    m_pMutex(m.Mutex()),
+    m_function(function),
+    m_file(file),
+    m_line(line),
+    m_lock_time(0)
+{
+    Lock();
+}
+
+PThreadMutex::Locker::Locker(PThreadMutex* m, const char *function, const char *file, const int line) :
+    m_pMutex(m ? m->Mutex() : NULL),
+    m_function(function),
+    m_file(file),
+    m_line(line),
+    m_lock_time(0)
+{
+    Lock();
+}
+
+PThreadMutex::Locker::Locker(pthread_mutex_t *mutex, const char *function, const char *file, const int line) :
+    m_pMutex(mutex),
+    m_function(function),
+    m_file(file),
+    m_line(line),
+    m_lock_time(0)
+{
+    Lock();
+}
+
+
+PThreadMutex::Locker::~Locker()
+{
+    Unlock();
+}
+
+
+void
+PThreadMutex::Locker::Lock()
+{
+    if (m_pMutex)
+    {
+        m_lock_time = DNBTimer::GetTimeOfDay();
+        if (::pthread_mutex_trylock (m_pMutex) != 0)
+        {
+            fprintf(stdout, "::pthread_mutex_trylock (%8.8p) mutex is locked (function %s in %s:%i), waiting...\n", m_pMutex, m_function, m_file, m_line);
+            ::pthread_mutex_lock (m_pMutex);
+            fprintf(stdout, "::pthread_mutex_lock (%8.8p) succeeded after %6llu usecs (function %s in %s:%i)\n", m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, m_file, m_line);
+        }
+    }
+}
+
+
+void
+PThreadMutex::Locker::Unlock()
+{
+    fprintf(stdout, "::pthread_mutex_unlock (%8.8p) had lock for %6llu usecs in %s in %s:%i\n", m_pMutex, DNBTimer::GetTimeOfDay() - m_lock_time, m_function, m_file, m_line);
+    ::pthread_mutex_unlock (m_pMutex);
+}
+
+#endif