The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2005 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #ifndef ANDROID_IPC_THREAD_STATE_H |
| 18 | #define ANDROID_IPC_THREAD_STATE_H |
| 19 | |
| 20 | #include <utils/Errors.h> |
Mathias Agopian | c5b2c0b | 2009-05-19 19:08:10 -0700 | [diff] [blame] | 21 | #include <binder/Parcel.h> |
| 22 | #include <binder/ProcessState.h> |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 23 | #include <utils/Vector.h> |
| 24 | |
| 25 | #ifdef HAVE_WIN32_PROC |
| 26 | typedef int uid_t; |
| 27 | #endif |
| 28 | |
| 29 | // --------------------------------------------------------------------------- |
| 30 | namespace android { |
| 31 | |
| 32 | class IPCThreadState |
| 33 | { |
| 34 | public: |
| 35 | static IPCThreadState* self(); |
Brad Fitzpatrick | 1b60843 | 2010-12-13 16:52:35 -0800 | [diff] [blame] | 36 | static IPCThreadState* selfOrNull(); // self(), but won't instantiate |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 37 | |
| 38 | sp<ProcessState> process(); |
| 39 | |
| 40 | status_t clearLastError(); |
| 41 | |
Jeff Brown | ada11c5 | 2013-07-12 16:32:00 -0700 | [diff] [blame] | 42 | int getCallingPid() const; |
| 43 | int getCallingUid() const; |
Brad Fitzpatrick | 702ea9d | 2010-06-18 13:07:53 -0700 | [diff] [blame] | 44 | |
| 45 | void setStrictModePolicy(int32_t policy); |
| 46 | int32_t getStrictModePolicy() const; |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 47 | |
| 48 | void setLastTransactionBinderFlags(int32_t flags); |
| 49 | int32_t getLastTransactionBinderFlags() const; |
| 50 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 51 | int64_t clearCallingIdentity(); |
| 52 | void restoreCallingIdentity(int64_t token); |
| 53 | |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 54 | int setupPolling(int* fd); |
| 55 | status_t handlePolledCommands(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 56 | void flushCommands(); |
| 57 | |
| 58 | void joinThreadPool(bool isMain = true); |
| 59 | |
| 60 | // Stop the local process. |
| 61 | void stopProcess(bool immediate = true); |
| 62 | |
| 63 | status_t transact(int32_t handle, |
| 64 | uint32_t code, const Parcel& data, |
| 65 | Parcel* reply, uint32_t flags); |
| 66 | |
| 67 | void incStrongHandle(int32_t handle); |
| 68 | void decStrongHandle(int32_t handle); |
| 69 | void incWeakHandle(int32_t handle); |
| 70 | void decWeakHandle(int32_t handle); |
| 71 | status_t attemptIncStrongHandle(int32_t handle); |
| 72 | static void expungeHandle(int32_t handle, IBinder* binder); |
| 73 | status_t requestDeathNotification( int32_t handle, |
| 74 | BpBinder* proxy); |
| 75 | status_t clearDeathNotification( int32_t handle, |
| 76 | BpBinder* proxy); |
| 77 | |
| 78 | static void shutdown(); |
| 79 | |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 80 | // Call this to disable switching threads to background scheduling when |
| 81 | // receiving incoming IPC calls. This is specifically here for the |
| 82 | // Android system process, since it expects to have background apps calling |
| 83 | // in to it but doesn't want to acquire locks in its services while in |
| 84 | // the background. |
| 85 | static void disableBackgroundScheduling(bool disable); |
| 86 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 87 | private: |
| 88 | IPCThreadState(); |
| 89 | ~IPCThreadState(); |
| 90 | |
| 91 | status_t sendReply(const Parcel& reply, uint32_t flags); |
| 92 | status_t waitForResponse(Parcel *reply, |
| 93 | status_t *acquireResult=NULL); |
| 94 | status_t talkWithDriver(bool doReceive=true); |
| 95 | status_t writeTransactionData(int32_t cmd, |
| 96 | uint32_t binderFlags, |
| 97 | int32_t handle, |
| 98 | uint32_t code, |
| 99 | const Parcel& data, |
| 100 | status_t* statusBuffer); |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 101 | status_t getAndExecuteCommand(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 102 | status_t executeCommand(int32_t command); |
Todd Poynor | 8d96cab | 2013-06-25 19:12:18 -0700 | [diff] [blame] | 103 | void processPendingDerefs(); |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 104 | |
| 105 | void clearCaller(); |
| 106 | |
| 107 | static void threadDestructor(void *st); |
| 108 | static void freeBuffer(Parcel* parcel, |
| 109 | const uint8_t* data, size_t dataSize, |
Arve Hjønnevåg | 84e625a | 2014-01-28 20:12:59 -0800 | [diff] [blame] | 110 | const binder_size_t* objects, size_t objectsSize, |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 111 | void* cookie); |
| 112 | |
| 113 | const sp<ProcessState> mProcess; |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 114 | const pid_t mMyThreadId; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 115 | Vector<BBinder*> mPendingStrongDerefs; |
| 116 | Vector<RefBase::weakref_type*> mPendingWeakDerefs; |
Dianne Hackborn | 8c6cedc | 2009-12-07 17:59:37 -0800 | [diff] [blame] | 117 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 118 | Parcel mIn; |
| 119 | Parcel mOut; |
| 120 | status_t mLastError; |
| 121 | pid_t mCallingPid; |
| 122 | uid_t mCallingUid; |
Brad Fitzpatrick | 702ea9d | 2010-06-18 13:07:53 -0700 | [diff] [blame] | 123 | int32_t mStrictModePolicy; |
Brad Fitzpatrick | 5273603 | 2010-08-30 16:01:16 -0700 | [diff] [blame] | 124 | int32_t mLastTransactionBinderFlags; |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 125 | }; |
Brad Fitzpatrick | 702ea9d | 2010-06-18 13:07:53 -0700 | [diff] [blame] | 126 | |
The Android Open Source Project | edbf3b6 | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 127 | }; // namespace android |
| 128 | |
| 129 | // --------------------------------------------------------------------------- |
| 130 | |
| 131 | #endif // ANDROID_IPC_THREAD_STATE_H |