1 files changed, 66 insertions, 0 deletions
diff --git a/gnu/llvm/lldb/tools/debugserver/source/PThreadMutex.cpp b/gnu/llvm/lldb/tools/debugserver/source/PThreadMutex.cpp
new file mode 100644
index 00000000000..118921aee5a
--- /dev/null
+++ b/gnu/llvm/lldb/tools/debugserver/source/PThreadMutex.cpp
@@ -0,0 +1,66 @@
+//===-- PThreadMutex.cpp ----------------------------------------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  Created by Greg Clayton on 12/9/08.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PThreadMutex.h"
+
+#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