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135 lines
5.7 KiB
135 lines
5.7 KiB
/*
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* Copyright (C) 2005 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_IPC_THREAD_STATE_H
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#define ANDROID_IPC_THREAD_STATE_H
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#include <utils/Errors.h>
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#include <binder/Parcel.h>
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#include <binder/ProcessState.h>
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#include <utils/Vector.h>
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#if defined(_WIN32)
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typedef int uid_t;
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#endif
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// ---------------------------------------------------------------------------
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namespace android {
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class IPCThreadState
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{
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public:
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static IPCThreadState* self();
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static IPCThreadState* selfOrNull(); // self(), but won't instantiate
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sp<ProcessState> process();
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status_t clearLastError();
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pid_t getCallingPid() const;
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uid_t getCallingUid() const;
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void setStrictModePolicy(int32_t policy);
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int32_t getStrictModePolicy() const;
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void setLastTransactionBinderFlags(int32_t flags);
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int32_t getLastTransactionBinderFlags() const;
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int64_t clearCallingIdentity();
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void restoreCallingIdentity(int64_t token);
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int setupPolling(int* fd);
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status_t handlePolledCommands();
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void flushCommands();
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void joinThreadPool(bool isMain = true);
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// Stop the local process.
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void stopProcess(bool immediate = true);
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status_t transact(int32_t handle,
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uint32_t code, const Parcel& data,
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Parcel* reply, uint32_t flags);
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void incStrongHandle(int32_t handle);
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void decStrongHandle(int32_t handle);
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void incWeakHandle(int32_t handle);
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void decWeakHandle(int32_t handle);
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status_t attemptIncStrongHandle(int32_t handle);
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static void expungeHandle(int32_t handle, IBinder* binder);
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status_t requestDeathNotification( int32_t handle,
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BpBinder* proxy);
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status_t clearDeathNotification( int32_t handle,
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BpBinder* proxy);
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static void shutdown();
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// Call this to disable switching threads to background scheduling when
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// receiving incoming IPC calls. This is specifically here for the
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// Android system process, since it expects to have background apps calling
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// in to it but doesn't want to acquire locks in its services while in
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// the background.
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static void disableBackgroundScheduling(bool disable);
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// Call blocks until the number of executing binder threads is less than
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// the maximum number of binder threads threads allowed for this process.
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void blockUntilThreadAvailable();
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private:
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IPCThreadState();
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~IPCThreadState();
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status_t sendReply(const Parcel& reply, uint32_t flags);
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status_t waitForResponse(Parcel *reply,
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status_t *acquireResult=NULL);
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status_t talkWithDriver(bool doReceive=true);
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status_t writeTransactionData(int32_t cmd,
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uint32_t binderFlags,
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int32_t handle,
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uint32_t code,
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const Parcel& data,
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status_t* statusBuffer);
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status_t getAndExecuteCommand();
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status_t executeCommand(int32_t command);
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void processPendingDerefs();
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void clearCaller();
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static void threadDestructor(void *st);
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static void freeBuffer(Parcel* parcel,
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const uint8_t* data, size_t dataSize,
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const binder_size_t* objects, size_t objectsSize,
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void* cookie);
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const sp<ProcessState> mProcess;
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const pid_t mMyThreadId;
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Vector<BBinder*> mPendingStrongDerefs;
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Vector<RefBase::weakref_type*> mPendingWeakDerefs;
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Parcel mIn;
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Parcel mOut;
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status_t mLastError;
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pid_t mCallingPid;
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uid_t mCallingUid;
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int32_t mStrictModePolicy;
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int32_t mLastTransactionBinderFlags;
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};
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}; // namespace android
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// ---------------------------------------------------------------------------
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#endif // ANDROID_IPC_THREAD_STATE_H
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