android/AndroidShm.h

   1 #ifndef ANDROIDSHM
   2 #define ANDROIDSHM
   3
   4 #include <binder/Parcel.h>
   5 #include "BnAndroidShm.h"
   6 #include <utils/Log.h>
   7 #include <binder/MemoryHeapBase.h>
   8 #include "shm.h"
   9 #include "android/Shm.h"  //android extension of shm.h
  10
  11 namespace android {
  12
  13     class AndroidShm : public BnAndroidShm
  14     {
  15 #define MAX_SHARED_MEMORY_COUNT 257
  16         private:
  17             int MemAlloc(unsigned int size);
  18
  19         public:
  20             virtual ~AndroidShm();
  21             static int instantiate();
  22             virtual int sendCommand(const char* command);
  23             virtual int allocShm(const int size); // if negative return value is error
  24             virtual int removeShm(const unsigned int index); // shared memory Á¦°Å
  25             virtual int isAllocated(const unsigned int index); // allocated ¿©ºÎ È®ÀÎ
  26             virtual int setRegistryIndex(const unsigned int index);
  27             virtual int getRegistryIndex();
  28             virtual sp<IMemoryHeap> InitSemaphore(const char* name);
  29             virtual sp<IMemoryHeap> getBuffer(int index);
  30             //virtual status_t onTransact(
  31             //        uint32_t code,
  32             //        const Parcel& data,
  33             //        Parcel* reply,
  34             //        uint32_t flags);
  35         private:
  36             int testGetBuffer();
  37             int testGetBufferByNewProcess();
  38             AndroidShm();
  39
  40             sp<MemoryHeapBase> mMemHeap[MAX_SHARED_MEMORY_COUNT];
  41             unsigned int mRegistryIndex;
  42
  43             // for named semaphore simulation
  44             #define MAX_SEMAPHORE_MEMORY_COUNT 300
  45             #define MAX_SEMAPHORE_NAME_LENGTH 300
  46             sp<MemoryHeapBase> mSemaphore[MAX_SEMAPHORE_MEMORY_COUNT];
  47             char mSemaphoreName[MAX_SEMAPHORE_MEMORY_COUNT][MAX_SEMAPHORE_NAME_LENGTH];
  48     };
  49 };
  50
  51 #endif