1 files changed, 105 insertions, 0 deletions
diff --git a/src/mutex.cc b/src/mutex.cc
new file mode 100644
index 0000000..4dba6b7
--- /dev/null
+++ b/src/mutex.cc
@@ -0,0 +1,105 @@
+/*
+ * Copyright (C) 2011 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "mutex.h"
+
+#include <errno.h>
+
+#include "logging.h"
+#include "utils.h"
+
+namespace art {
+
+Mutex::Mutex(const char* name) : name_(name) {
+#ifndef NDEBUG
+  pthread_mutexattr_t debug_attributes;
+  errno = pthread_mutexattr_init(&debug_attributes);
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutexattr_init failed";
+  }
+#if VERIFY_OBJECT_ENABLED
+  errno = pthread_mutexattr_settype(&debug_attributes, PTHREAD_MUTEX_RECURSIVE);
+#else
+  errno = pthread_mutexattr_settype(&debug_attributes, PTHREAD_MUTEX_ERRORCHECK);
+#endif
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutexattr_settype failed";
+  }
+  errno = pthread_mutex_init(&mutex_, &debug_attributes);
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutex_init failed";
+  }
+  errno = pthread_mutexattr_destroy(&debug_attributes);
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutexattr_destroy failed";
+  }
+#else
+  errno = pthread_mutex_init(&mutex_, NULL);
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutex_init failed";
+  }
+#endif
+}
+
+Mutex::~Mutex() {
+  errno = pthread_mutex_destroy(&mutex_);
+  if (errno != 0) {
+    PLOG(FATAL) << "pthread_mutex_destroy failed";
+  }
+}
+
+void Mutex::Lock() {
+  int result = pthread_mutex_lock(&mutex_);
+  if (result != 0) {
+    errno = result;
+    PLOG(FATAL) << "pthread_mutex_lock failed";
+  }
+}
+
+bool Mutex::TryLock() {
+  int result = pthread_mutex_trylock(&mutex_);
+  if (result == EBUSY) {
+    return false;
+  }
+  if (result != 0) {
+    errno = result;
+    PLOG(FATAL) << "pthread_mutex_trylock failed";
+  }
+  return true;
+}
+
+void Mutex::Unlock() {
+  int result = pthread_mutex_unlock(&mutex_);
+  if (result != 0) {
+    errno = result;
+    PLOG(FATAL) << "pthread_mutex_unlock failed";
+  }
+}
+
+pid_t Mutex::GetOwner() {
+#ifdef __BIONIC__
+  return static_cast<pid_t>((mutex_.value >> 16) & 0xffff);
+#else
+  UNIMPLEMENTED(FATAL);
+  return 0;
+#endif
+}
+
+pid_t Mutex::GetTid() {
+  return art::GetTid();
+}
+
+}  // namespace