Initial Contribution
diff --git a/libs/utils/Binder.cpp b/libs/utils/Binder.cpp
new file mode 100644
index 0000000..37e4685
--- /dev/null
+++ b/libs/utils/Binder.cpp
@@ -0,0 +1,242 @@
+/*
+ * Copyright (C) 2005 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 <utils/Binder.h>
+
+#include <utils/Atomic.h>
+#include <utils/BpBinder.h>
+#include <utils/IInterface.h>
+#include <utils/Parcel.h>
+
+#include <stdio.h>
+
+namespace android {
+
+// ---------------------------------------------------------------------------
+
+sp<IInterface> IBinder::queryLocalInterface(const String16& descriptor)
+{
+ return NULL;
+}
+
+BBinder* IBinder::localBinder()
+{
+ return NULL;
+}
+
+BpBinder* IBinder::remoteBinder()
+{
+ return NULL;
+}
+
+bool IBinder::checkSubclass(const void* /*subclassID*/) const
+{
+ return false;
+}
+
+// ---------------------------------------------------------------------------
+
+class BBinder::Extras
+{
+public:
+ Mutex mLock;
+ BpBinder::ObjectManager mObjects;
+};
+
+// ---------------------------------------------------------------------------
+
+BBinder::BBinder()
+ : mExtras(NULL)
+{
+}
+
+bool BBinder::isBinderAlive() const
+{
+ return true;
+}
+
+status_t BBinder::pingBinder()
+{
+ return NO_ERROR;
+}
+
+String16 BBinder::getInterfaceDescriptor() const
+{
+ LOGW("reached BBinder::getInterfaceDescriptor (this=%p)", this);
+ return String16();
+}
+
+status_t BBinder::transact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ data.setDataPosition(0);
+
+ status_t err = NO_ERROR;
+ switch (code) {
+ case PING_TRANSACTION:
+ reply->writeInt32(pingBinder());
+ break;
+ default:
+ err = onTransact(code, data, reply, flags);
+ break;
+ }
+
+ if (reply != NULL) {
+ reply->setDataPosition(0);
+ }
+
+ return err;
+}
+
+status_t BBinder::linkToDeath(
+ const sp<DeathRecipient>& recipient, void* cookie, uint32_t flags)
+{
+ return INVALID_OPERATION;
+}
+
+status_t BBinder::unlinkToDeath(
+ const wp<DeathRecipient>& recipient, void* cookie, uint32_t flags,
+ wp<DeathRecipient>* outRecipient)
+{
+ return INVALID_OPERATION;
+}
+
+status_t BBinder::dump(int fd, const Vector<String16>& args)
+{
+ return NO_ERROR;
+}
+
+void BBinder::attachObject(
+ const void* objectID, void* object, void* cleanupCookie,
+ object_cleanup_func func)
+{
+ Extras* e = mExtras;
+
+ if (!e) {
+ e = new Extras;
+ if (android_atomic_cmpxchg(0, reinterpret_cast<int32_t>(e),
+ reinterpret_cast<volatile int32_t*>(&mExtras)) != 0) {
+ delete e;
+ e = mExtras;
+ }
+ if (e == 0) return; // out of memory
+ }
+
+ AutoMutex _l(e->mLock);
+ e->mObjects.attach(objectID, object, cleanupCookie, func);
+}
+
+void* BBinder::findObject(const void* objectID) const
+{
+ Extras* e = mExtras;
+ if (!e) return NULL;
+
+ AutoMutex _l(e->mLock);
+ return e->mObjects.find(objectID);
+}
+
+void BBinder::detachObject(const void* objectID)
+{
+ Extras* e = mExtras;
+ if (!e) return;
+
+ AutoMutex _l(e->mLock);
+ e->mObjects.detach(objectID);
+}
+
+BBinder* BBinder::localBinder()
+{
+ return this;
+}
+
+BBinder::~BBinder()
+{
+ if (mExtras) delete mExtras;
+}
+
+
+status_t BBinder::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ switch (code) {
+ case INTERFACE_TRANSACTION:
+ reply->writeString16(getInterfaceDescriptor());
+ return NO_ERROR;
+
+ case DUMP_TRANSACTION: {
+ int fd = data.readFileDescriptor();
+ int argc = data.readInt32();
+ Vector<String16> args;
+ for (int i = 0; i < argc && data.dataAvail() > 0; i++) {
+ args.add(data.readString16());
+ }
+ return dump(fd, args);
+ }
+ default:
+ return UNKNOWN_TRANSACTION;
+ }
+}
+
+// ---------------------------------------------------------------------------
+
+enum {
+ // This is used to transfer ownership of the remote binder from
+ // the BpRefBase object holding it (when it is constructed), to the
+ // owner of the BpRefBase object when it first acquires that BpRefBase.
+ kRemoteAcquired = 0x00000001
+};
+
+BpRefBase::BpRefBase(const sp<IBinder>& o)
+ : mRemote(o.get()), mRefs(NULL), mState(0)
+{
+ extendObjectLifetime(OBJECT_LIFETIME_WEAK);
+
+ if (mRemote) {
+ mRemote->incStrong(this); // Removed on first IncStrong().
+ mRefs = mRemote->createWeak(this); // Held for our entire lifetime.
+ }
+}
+
+BpRefBase::~BpRefBase()
+{
+ if (mRemote) {
+ if (!(mState&kRemoteAcquired)) {
+ mRemote->decStrong(this);
+ }
+ mRefs->decWeak(this);
+ }
+}
+
+void BpRefBase::onFirstRef()
+{
+ android_atomic_or(kRemoteAcquired, &mState);
+}
+
+void BpRefBase::onLastStrongRef(const void* id)
+{
+ if (mRemote) {
+ mRemote->decStrong(this);
+ }
+}
+
+bool BpRefBase::onIncStrongAttempted(uint32_t flags, const void* id)
+{
+ return mRemote ? mRefs->attemptIncStrong(this) : false;
+}
+
+// ---------------------------------------------------------------------------
+
+}; // namespace android