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Clean up POSIX streaming code

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This commit is contained in:
erorcun 2021-01-27 18:26:08 +03:00
parent f27e1ec818
commit 843dd9b5e1
6 changed files with 94 additions and 45 deletions
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29
src/core/CdStreamPosix.cpp
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@ -21,9 +21,9 @@
#define CDDEBUG(f, ...) debug ("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
#define CDTRACE(f, ...) printf("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
// #define ONE_THREAD_PER_CHANNEL // Don't use if you're not on SSD/Flash. (Also you may want to benefit from this via using all channels in Streaming.cpp)
#ifdef FLUSHABLE_STREAMING
bool flushStream[MAX_CDCHANNELS];
#endif
struct CdReadInfo
{
@ -99,6 +99,7 @@ CdStreamInitThread(void)
ASSERT(0);
return;
}
#ifdef ONE_THREAD_PER_CHANNEL
sprintf(semName,"/semaphore_start%d",i);
gpReadInfo[i].pStartSemaphore = sem_open(semName, O_CREAT, 0644, 1);
@ -245,10 +246,12 @@ CdStreamRead(int32 channel, void *buffer, uint32 offset, uint32 size)
if ( pChannel->nSectorsToRead != 0 || pChannel->bReading ) {
if (pChannel->hFile == hImage - 1 && pChannel->nSectorOffset == _GET_OFFSET(offset) && pChannel->nSectorsToRead >= size)
return STREAM_SUCCESS;
#ifdef FLUSHABLE_STREAMING
flushStream[channel] = 1;
CdStreamSync(channel);
//return STREAM_NONE;
#else
return STREAM_NONE;
#endif
}
pChannel->hFile = hImage - 1;
@ -316,34 +319,34 @@ CdStreamSync(int32 channel)
CdReadInfo *pChannel = &gpReadInfo[channel];
ASSERT( pChannel != nil );
#ifdef FLUSHABLE_STREAMING
if (flushStream[channel]) {
#ifdef ONE_THREAD_PER_CHANNEL
pChannel->nSectorsToRead = 0;
#ifdef ONE_THREAD_PER_CHANNEL
pthread_kill(pChannel->pChannelThread, SIGUSR1);
if (pChannel->bReading) {
pChannel->bLocked = true;
while (pChannel->bLocked)
sem_wait(pChannel->pDoneSemaphore);
}
#else
pChannel->nSectorsToRead = 0;
if (pChannel->bReading) {
pChannel->bLocked = true;
pthread_kill(_gCdStreamThread, SIGUSR1);
#endif
while (pChannel->bLocked)
sem_wait(pChannel->pDoneSemaphore);
}
#endif
pChannel->bReading = false;
flushStream[channel] = false;
return STREAM_NONE;
}
#endif
if ( pChannel->nSectorsToRead != 0 )
{
pChannel->bLocked = true;
while (pChannel->bLocked)
while (pChannel->bLocked && pChannel->nSectorsToRead != 0){
sem_wait(pChannel->pDoneSemaphore);
}
pChannel->bLocked = false;
}
pChannel->bReading = false;
@ -447,7 +450,7 @@ void *CdStreamThread(void *param)
if ( pChannel->bLocked )
{
pChannel->bLocked = 0;
sem_post(pChannel->pDoneSemaphore);
sem_post(pChannel->pDoneSemaphore);
}
pChannel->bReading = false;
}
@ -524,7 +527,9 @@ void
CdStreamRemoveImages(void)
{
for ( int32 i = 0; i < gNumChannels; i++ ) {
#ifdef FLUSHABLE_STREAMING
flushStream[i] = 1;
#endif
CdStreamSync(i);
}