static RSHashCode __RSRenrenFriendClassHash(RSTypeRef rs)
{
return RSHash(((RSRenrenFriendRef)rs)->_account);
}
static RSHashCode __RSCoreUSBDeviceClassHash(RSTypeRef rs) {
RSCoreUSBDeviceRef device = (RSCoreUSBDeviceRef)rs;
return RSHash(device->_deviceName);
}
/*
* === FUNCTION ======================================================================
* Name: NVOpenRegion
* Description:
* =====================================================================================
*/
NVRDescr * NVOpenRegion(char * name, /* region name */
void * startingAddr, /* starting addr */
int size) /* region size. The real size is rounded up */
{
int nameLen;
// check name lenght
if ((nameLen=strlen(name))>NV_MAXPATH){
printf("NVOpenRegion name length is longer than NV_MAXPATH\n");
exit(1);
}
key_t keyNVRegion;
int shmId;
struct shmid_ds shmDsBuf,* shmDsPtr;
shmDsPtr = &shmDsBuf;
int flag = 0;
NVRDescr *nvrAddr;
char *shmPtr;
#if defined(SHM)
if ((keyNVRegion=ftok(name, 0))<0) {
DEBUG_OUTPUT("Please create this file to back the memory.");
e("NVOpenRegion ftok error");
}
// unsigned int RSHash (char* str, unsigned int len);
// get shmId, if not exist create
if ((shmId=shmget(keyNVRegion,size,SHM_MODE))<=0) {
if (errno==ENOENT){// this region is not exists, create a new one
if ((shmId=shmget(keyNVRegion,size,IPC_CREAT|SHM_MODE))<=0){
e("NVOpenRegion shmget error");
}
// successfully create this shm
flag = 1;
// get stat here
}else
e("NVOpenRegion shmget error");
}
// shmat
#ifdef FIXMEMBASE
if ((shmPtr = shmat(shmId,membase,0) )==(void *)-1)
#else /* ----- not FIXMEMBASE ----- */
if ((shmPtr = shmat(shmId,startingAddr,0) )==(void *)-1)
#endif /* ----- not FIXMEMBASE ----- */
{
e("NVOpenRegion shmat error");
}
if ((void *)shmPtr!=membase){
errno = EFAULT;
e("NVOpenRegion shmat error");
}
// get shm_ds
if ((shmctl(shmId,IPC_STAT,&shmDsBuf))<0) {
e("NVOpenRegion shmctl error");
}
#elif defined(MMAP)
#ifdef FIXMEMBASE
shmPtr = membase;
#else /* ----- not FIXMEMBASE ----- */
shmPtr = startingAddr;
#endif /* ----- not FIXMEMBASE ----- */
// open the file
int fd;
if ( (fd = open(name, O_RDWR, S_IRWXU)) < 0){
if (errno==ENOENT){// this region is not exists, create a new one
if ((fd = open(name, O_RDWR|O_CREAT|O_TRUNC, S_IRWXU)) < 0){
e("NVOpenRegion fd open error");
}
// successfully create this file
flag = 1;
// make it becomes certain size
int result = lseek(fd, SHM_SIZE-1, SEEK_SET);
if (result == -1) {
close(fd);
e("NVOpenRegion lseek error");
}
result = write(fd, "", 1);
if (result < 0) {
close(fd);
e("NVOpenRegion write at the end of file error");
}
}else
e("NVOpenRegion fd open error");
}
// get file stat
struct stat file_stat;
if ( fstat( fd, &file_stat) < 0 )
{
// printf(" fstat wrong");
// exit(1);
e("NVOpenRegion fstat error");
}
keyNVRegion = file_stat.st_ino;
// ftruncate(fd, file_stat.st_size+size);
printf("filein size = %ld\n",file_stat.st_size);
void *start_fp;
// check size here.
//
if( ( start_fp = mmap(shmPtr, file_stat.st_size, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0 )) == MAP_FAILED)
{
// printf("mmap wrong");
// exit(0);
e("NVOpenRegion mmap error");
}
// now you can close
close(fd);
shmId = RSHash(name, nameLen); // provide shmid using hash
// as long as the file exists, the shared memory exists.
#endif
nvrAddr = (NVRDescr *)shmPtr;
if (flag==1) {// initiate the meta data of this region
nvrAddr->size = size;
nvrAddr->refKey = keyNVRegion;
nvrAddr->rootMapOffset = size;
nvrAddr->dataRegionOffset = sizeof(NVRDescr);
nvrAddr->shareFlag = SHARE;
#if defined(SHM)
nvrAddr->processCnt = shmDsPtr->shm_nattch; // better processCnt
#elif defined(MMAP)
nvrAddr->processCnt = 1; // the process creates this shm, the processCnt will always be 1
#endif
nvrAddr->nvRootCnt = 0;
nvrAddr->ID = shmId;
nvrAddr->nameLen = nameLen;
memset(nvrAddr->name, '\0', sizeof(nvrAddr->name));
strcpy(nvrAddr->name,name);
/* :TODO:11/06/2013 12:53:07 PM:: initiate the rootmap */
mem_init();
if (mm_init()<0)
{
e("MVMalloc initialization error.");
}
} else {
// update NVRDescr
nvrAddr->processCnt = shmDsPtr->shm_nattch; // 1 is the initial value
nvrAddr->refKey = keyNVRegion; // it is possible that the keyNVRegion is null and needs to be update
// #ifdef DEBUG
// printf("%d\n",nvrAddr->refKey);
// #endif /* ----- not DEBUG ----- */
mem_init();
// mem_init();
// if (mm_init()<0)
// {
// e("MVMalloc initialization error.");
// }
}
return nvrAddr;
}
static RSHashCode __RSCalendarHash(RSTypeRef obj)
{
RSCalendarRef calendar = (RSCalendarRef)obj;
return RSHash(calendar->_identifier);
}
