More threads work.
Adds stubs (and sometimes implementations) for dalvik.system.VMStack and
java.lang.Thread native methods. There was a bug in the dalvik
thread priority setting code, where the current thread and the passed-in
thread were confused.
I've also pulled Mutex and ThreadList out into their own files, and
moved some functionality around (with the aim of having more stuff
private, especially locks).
Change-Id: Ieb0f22669cac3df44ca34f7868f8e7d4dfa09ab6
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