ProcessState.h revision 1b80f793d2328dd94a151411a1cc3a676121ffc7 
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            void                setContextObject(const sp<IBinder>& object);
43            sp<IBinder>         getContextObject(const sp<IBinder>& caller);
44
45            void                setContextObject(const sp<IBinder>& object,
46                                                 const String16& name);
47            sp<IBinder>         getContextObject(const String16& name,
48                                                 const sp<IBinder>& caller);
49
50            void                startThreadPool();
51
52    typedef bool (*context_check_func)(const String16& name,
53                                       const sp<IBinder>& caller,
54                                       void* userData);
55
56            bool                isContextManager(void) const;
57            bool                becomeContextManager(
58                                    context_check_func checkFunc,
59                                    void* userData);
60
61            sp<IBinder>         getStrongProxyForHandle(int32_t handle);
62            wp<IBinder>         getWeakProxyForHandle(int32_t handle);
63            void                expungeHandle(int32_t handle, IBinder* binder);
64
65            void                setArgs(int argc, const char* const argv[]);
66            int                 getArgC() const;
67            const char* const*  getArgV() const;
68
69            void                setArgV0(const char* txt);
70
71            void                spawnPooledThread(bool isMain);
72
73            status_t            setThreadPoolMaxThreadCount(size_t maxThreads);
74
75private:
76    friend class IPCThreadState;
77
78                                ProcessState();
79                                ~ProcessState();
80
81                                ProcessState(const ProcessState& o);
82            ProcessState&       operator=(const ProcessState& o);
83
84            struct handle_entry {
85                IBinder* binder;
86                RefBase::weakref_type* refs;
87            };
88
89            handle_entry*       lookupHandleLocked(int32_t handle);
90
91            int                 mDriverFD;
92            void*               mVMStart;
93
94    mutable Mutex               mLock;  // protects everything below.
95
96            Vector<handle_entry>mHandleToObject;
97
98            bool                mManagesContexts;
99            context_check_func  mBinderContextCheckFunc;
100            void*               mBinderContextUserData;
101
102            KeyedVector<String16, sp<IBinder> >
103                                mContexts;
104
105
106            String8             mRootDir;
107            bool                mThreadPoolStarted;
108    volatile int32_t            mThreadPoolSeq;
109};
110
111}; // namespace android
112
113// ---------------------------------------------------------------------------
114
115#endif // ANDROID_PROCESS_STATE_H
116