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authorerorcun <erorcunerorcun@hotmail.com.tr>2021-02-16 15:11:12 +0100
committererorcun <erorcunerorcun@hotmail.com.tr>2021-02-16 15:45:29 +0100
commit49fd99119d28b488e87a273c1723c7c9d2e7a950 (patch)
tree0a9f58e27b255297e37e562554662c1a253b3ede /src/core
parentAdd PR rules to Readme (diff)
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Diffstat (limited to 'src/core')
-rw-r--r--src/core/CdStream.cpp41
1 files changed, 27 insertions, 14 deletions
diff --git a/src/core/CdStream.cpp b/src/core/CdStream.cpp
index da85a238..977f16c2 100644
--- a/src/core/CdStream.cpp
+++ b/src/core/CdStream.cpp
@@ -14,9 +14,9 @@ struct CdReadInfo
void *pBuffer;
char field_C;
bool bLocked;
- bool bInUse;
+ bool bReading;
int32 nStatus;
- HANDLE hSemaphore; // used for CdStreamSync
+ HANDLE pDoneSemaphore; // used for CdStreamSync
HANDLE hFile;
OVERLAPPED Overlapped;
};
@@ -53,9 +53,9 @@ CdStreamInitThread(void)
{
for ( int32 i = 0; i < gNumChannels; i++ )
{
- gpReadInfo[i].hSemaphore = CreateSemaphore(nil, 0, 2, nil);
+ gpReadInfo[i].pDoneSemaphore = CreateSemaphore(nil, 0, 2, nil);
- if ( gpReadInfo[i].hSemaphore == nil )
+ if ( gpReadInfo[i].pDoneSemaphore == nil )
{
printf("%s: failed to create sync semaphore\n", "cdvd_stream");
ASSERT(0);
@@ -183,7 +183,7 @@ CdStreamShutdown(void)
CloseHandle(_gCdStreamThread);
for ( int32 i = 0; i < gNumChannels; i++ )
- CloseHandle(gpReadInfo[i].hSemaphore);
+ CloseHandle(gpReadInfo[i].pDoneSemaphore);
}
LocalFree(gpReadInfo);
@@ -213,7 +213,7 @@ CdStreamRead(int32 channel, void *buffer, uint32 offset, uint32 size)
if ( _gbCdStreamAsync )
{
- if ( pChannel->nSectorsToRead != 0 || pChannel->bInUse )
+ if ( pChannel->nSectorsToRead != 0 || pChannel->bReading )
return STREAM_NONE;
pChannel->nStatus = STREAM_NONE;
@@ -271,7 +271,7 @@ CdStreamGetStatus(int32 channel)
if ( _gbCdStreamAsync )
{
- if ( pChannel->bInUse )
+ if ( pChannel->bReading )
return STREAM_READING;
if ( pChannel->nSectorsToRead != 0 )
@@ -321,12 +321,21 @@ CdStreamSync(int32 channel)
{
pChannel->bLocked = true;
- ASSERT( pChannel->hSemaphore != nil );
+ ASSERT( pChannel->pDoneSemaphore != nil );
- WaitForSingleObject(pChannel->hSemaphore, INFINITE);
+ // Deadlock fix 1
+#ifdef FIX_BUGS
+ // This is while loop on Posix streamer, for spurious wakeups
+ if (pChannel->bLocked && pChannel->nSectorsToRead != 0){
+ WaitForSingleObject(pChannel->pDoneSemaphore, INFINITE);
+ }
+ pChannel->bLocked = false;
+#else
+ WaitForSingleObject(pChannel->pDoneSemaphore, INFINITE);
+#endif
}
- pChannel->bInUse = false;
+ pChannel->bReading = false;
return pChannel->nStatus;
}
@@ -398,7 +407,7 @@ WINAPI CdStreamThread(LPVOID lpThreadParameter)
CdReadInfo *pChannel = &gpReadInfo[channel];
ASSERT( pChannel != nil );
- pChannel->bInUse = true;
+ pChannel->bReading = true;
if ( pChannel->nStatus == STREAM_NONE )
{
@@ -455,11 +464,15 @@ WINAPI CdStreamThread(LPVOID lpThreadParameter)
if ( pChannel->bLocked )
{
- ASSERT( pChannel->hSemaphore != nil );
- ReleaseSemaphore(pChannel->hSemaphore, 1, NULL);
+ ASSERT( pChannel->pDoneSemaphore != nil );
+ // Deadlock fix 2
+#ifdef FIX_BUGS
+ pChannel->bLocked = 0;
+#endif
+ ReleaseSemaphore(pChannel->pDoneSemaphore, 1, NULL);
}
- pChannel->bInUse = false;
+ pChannel->bReading = false;
}
}