ProcessState.h revision c5b2c0bf8007562536b822eb060fc54a01f8e08b 
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_PROCESS_STATE_H
18#define ANDROID_PROCESS_STATE_H
19
20#include <binder/IBinder.h>
21#include <utils/KeyedVector.h>
22#include <utils/String8.h>
23#include <utils/String16.h>
24
25#include <utils/threads.h>
26
27// ---------------------------------------------------------------------------
28namespace android {
29
30// Global variables
31extern int                 mArgC;
32extern const char* const*  mArgV;
33extern int                 mArgLen;
34
35class IPCThreadState;
36
37class ProcessState : public virtual RefBase
38{
39public:
40    static  sp<ProcessState>    self();
41
42    static  void                setSingleProcess(bool singleProcess);
43
44            void                setContextObject(const sp<IBinder>& object);
45            sp<IBinder>         getContextObject(const sp<IBinder>& caller);
46
47            void                setContextObject(const sp<IBinder>& object,
48                                                 const String16& name);
49            sp<IBinder>         getContextObject(const String16& name,
50                                                 const sp<IBinder>& caller);
51
52            bool                supportsProcesses() const;
53
54            void                startThreadPool();
55
56    typedef bool (*context_check_func)(const String16& name,
57                                       const sp<IBinder>& caller,
58                                       void* userData);
59
60            bool                isContextManager(void) const;
61            bool                becomeContextManager(
62                                    context_check_func checkFunc,
63                                    void* userData);
64
65            sp<IBinder>         getStrongProxyForHandle(int32_t handle);
66            wp<IBinder>         getWeakProxyForHandle(int32_t handle);
67            void                expungeHandle(int32_t handle, IBinder* binder);
68
69            void                setArgs(int argc, const char* const argv[]);
70            int                 getArgC() const;
71            const char* const*  getArgV() const;
72
73            void                setArgV0(const char* txt);
74
75            void                spawnPooledThread(bool isMain);
76
77private:
78    friend class IPCThreadState;
79
80                                ProcessState();
81                                ~ProcessState();
82
83                                ProcessState(const ProcessState& o);
84            ProcessState&       operator=(const ProcessState& o);
85
86            struct handle_entry {
87                IBinder* binder;
88                RefBase::weakref_type* refs;
89            };
90
91            handle_entry*       lookupHandleLocked(int32_t handle);
92
93            int                 mDriverFD;
94            void*               mVMStart;
95
96    mutable Mutex               mLock;  // protects everything below.
97
98            Vector<handle_entry>mHandleToObject;
99
100            bool                mManagesContexts;
101            context_check_func  mBinderContextCheckFunc;
102            void*               mBinderContextUserData;
103
104            KeyedVector<String16, sp<IBinder> >
105                                mContexts;
106
107
108            String8             mRootDir;
109            bool                mThreadPoolStarted;
110    volatile int32_t            mThreadPoolSeq;
111};
112
113}; // namespace android
114
115// ---------------------------------------------------------------------------
116
117#endif // ANDROID_PROCESS_STATE_H
118