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
30class IPCThreadState;
31
32class ProcessState : public virtual RefBase
33{
34public:
35    static  sp<ProcessState>    self();
36
37            void                setContextObject(const sp<IBinder>& object);
38            sp<IBinder>         getContextObject(const sp<IBinder>& caller);
39
40            void                setContextObject(const sp<IBinder>& object,
41                                                 const String16& name);
42            sp<IBinder>         getContextObject(const String16& name,
43                                                 const sp<IBinder>& caller);
44
45            void                startThreadPool();
46
47    typedef bool (*context_check_func)(const String16& name,
48                                       const sp<IBinder>& caller,
49                                       void* userData);
50
51            bool                isContextManager(void) const;
52            bool                becomeContextManager(
53                                    context_check_func checkFunc,
54                                    void* userData);
55
56            sp<IBinder>         getStrongProxyForHandle(int32_t handle);
57            wp<IBinder>         getWeakProxyForHandle(int32_t handle);
58            void                expungeHandle(int32_t handle, IBinder* binder);
59
60            void                spawnPooledThread(bool isMain);
61
62            status_t            setThreadPoolMaxThreadCount(size_t maxThreads);
63            void                giveThreadPoolName();
64
65private:
66    friend class IPCThreadState;
67
68                                ProcessState();
69                                ~ProcessState();
70
71                                ProcessState(const ProcessState& o);
72            ProcessState&       operator=(const ProcessState& o);
73            String8             makeBinderThreadName();
74
75            struct handle_entry {
76                IBinder* binder;
77                RefBase::weakref_type* refs;
78            };
79
80            handle_entry*       lookupHandleLocked(int32_t handle);
81
82            int                 mDriverFD;
83            void*               mVMStart;
84
85    mutable Mutex               mLock;  // protects everything below.
86
87            Vector<handle_entry>mHandleToObject;
88
89            bool                mManagesContexts;
90            context_check_func  mBinderContextCheckFunc;
91            void*               mBinderContextUserData;
92
93            KeyedVector<String16, sp<IBinder> >
94                                mContexts;
95
96
97            String8             mRootDir;
98            bool                mThreadPoolStarted;
99    volatile int32_t            mThreadPoolSeq;
100};
101
102}; // namespace android
103
104// ---------------------------------------------------------------------------
105
106#endif // ANDROID_PROCESS_STATE_H
107