core/CdStreamPosix: switch to named semaphores to support macOS
macOS does not support unnamed semaphores. The functions return ENOSYS.
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@ -4,7 +4,6 @@
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#include <pthread.h>
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#include <signal.h>
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#include <semaphore.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/time.h>
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@ -22,30 +21,6 @@
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#define CDDEBUG(f, ...) debug ("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
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#define CDTRACE(f, ...) printf("%s: " f "\n", "cdvd_stream", ## __VA_ARGS__)
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#ifdef __APPLE__
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#define COMPAT_SEM_T sem_t *
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int compat_sem_init(sem_t **ptr, __attribute__((unused)) int x, __attribute__((unused)) int y) {
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*ptr = sem_open("/semaphore", O_CREAT, 0644, 1);
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return *ptr == SEM_FAILED ? -1 : 0;
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}
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int compat_sem_post(sem_t **sem) {
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return sem_post(*sem);
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}
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int compat_sem_wait(sem_t **sem) {
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return sem_wait(*sem);
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}
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int compat_sem_destroy(sem_t **sem, const char * name) {
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sem_close(*sem);
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sem_unlink(name);
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}
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#else
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#define COMPAT_SEM_T sem_t
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#define compat_sem_post sem_post
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#define compat_sem_destroy(x, y) sem_destroy(x)
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#define compat_sem_init sem_init
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#define compat_sem_wait sem_wait
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#endif
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// #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)
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bool flushStream[MAX_CDCHANNELS];
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@ -60,11 +35,11 @@ struct CdReadInfo
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int32 nStatus;
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#ifdef ONE_THREAD_PER_CHANNEL
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int8 nThreadStatus; // 0: created 1:initalized 2:abort now
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pthread_t pChannelThread;
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COMPAT_SEM_T pStartSemaphore;
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pthread_t pChannelThread;
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sem_t *pStartSemaphore;
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#endif
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COMPAT_SEM_T pDoneSemaphore; // used for CdStreamSync
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int32 hFile;
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sem_t *pDoneSemaphore; // used for CdStreamSync
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int32 hFile;
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};
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char gCdImageNames[MAX_CDIMAGES+1][64];
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@ -76,7 +51,7 @@ char *gImgNames[MAX_CDIMAGES];
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#ifndef ONE_THREAD_PER_CHANNEL
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pthread_t _gCdStreamThread;
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COMPAT_SEM_T gCdStreamSema; // released when we have new thing to read(so channel is set)
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sem_t *gCdStreamSema; // released when we have new thing to read(so channel is set)
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int8 gCdStreamThreadStatus; // 0: created 1:initalized 2:abort now
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Queue gChannelRequestQ;
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bool _gbCdStreamOverlapped;
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@ -101,11 +76,11 @@ CdStreamInitThread(void)
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gChannelRequestQ.tail = 0;
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gChannelRequestQ.size = gNumChannels + 1;
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ASSERT(gChannelRequestQ.items != nil );
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status = compat_sem_init(&gCdStreamSema, 0, 0);
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gCdStreamSema = sem_open("/semaphore_cd_stream", O_CREAT, 0644, 1);
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#endif
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if (status == -1) {
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if (gCdStreamSema == SEM_FAILED) {
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CDTRACE("failed to create stream semaphore");
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ASSERT(0);
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return;
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@ -116,18 +91,18 @@ CdStreamInitThread(void)
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{
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for ( int32 i = 0; i < gNumChannels; i++ )
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{
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status = compat_sem_init(&gpReadInfo[i].pDoneSemaphore, 0, 0);
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gpReadInfo[i].pDoneSemaphore = sem_open("/semaphore_done", O_CREAT, 0644, 1);
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if (status == -1)
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if (gpReadInfo[i].pDoneSemaphore == SEM_FAILED)
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{
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CDTRACE("failed to create sync semaphore");
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ASSERT(0);
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return;
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}
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#ifdef ONE_THREAD_PER_CHANNEL
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status = compat_sem_init(&gpReadInfo[i].pStartSemaphore, 0, 0);
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gpReadInfo[i].pStartSemaphore = sem_open("/semaphore_start", O_CREAT, 0644, 1);
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if (status == -1)
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if (gpReadInfo[i].pStartSemaphore == SEM_FAILED)
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{
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CDTRACE("failed to create start semaphore");
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ASSERT(0);
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@ -160,7 +135,7 @@ CdStreamInitThread(void)
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return;
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}
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#else
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debug("Using seperate streaming threads for each channel\n");
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debug("Using separate streaming threads for each channel\n");
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#endif
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}
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@ -239,13 +214,13 @@ CdStreamShutdown(void)
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// Destroying semaphores and free(gpReadInfo) will be done at threads
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#ifndef ONE_THREAD_PER_CHANNEL
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gCdStreamThreadStatus = 2;
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compat_sem_post(&gCdStreamSema);
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sem_post(gCdStreamSema);
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#endif
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#ifdef ONE_THREAD_PER_CHANNEL
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for ( int32 i = 0; i < gNumChannels; i++ ) {
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gpReadInfo[i].nThreadStatus = 2;
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compat_sem_post(&gpReadInfo[i].pStartSemaphore);
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sem_post(&gpReadInfo[i].pStartSemaphore);
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}
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#endif
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}
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@ -279,10 +254,10 @@ CdStreamRead(int32 channel, void *buffer, uint32 offset, uint32 size)
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#ifndef ONE_THREAD_PER_CHANNEL
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AddToQueue(&gChannelRequestQ, channel);
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if ( compat_sem_post(&gCdStreamSema) != 0 )
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if ( sem_post(gCdStreamSema) != 0 )
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printf("Signal Sema Error\n");
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#else
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if ( compat_sem_post(&gpReadInfo[channel].pStartSemaphore) != 0 )
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if ( sem_post(&gpReadInfo[channel].pStartSemaphore) != 0 )
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printf("Signal Sema Error\n");
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#endif
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@ -357,7 +332,7 @@ CdStreamSync(int32 channel)
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{
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pChannel->bLocked = true;
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compat_sem_wait(&pChannel->pDoneSemaphore);
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sem_wait(pChannel->pDoneSemaphore);
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}
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pChannel->bReading = false;
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@ -408,12 +383,12 @@ void *CdStreamThread(void *param)
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#ifndef ONE_THREAD_PER_CHANNEL
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while (gCdStreamThreadStatus != 2) {
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compat_sem_wait(&gCdStreamSema);
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sem_wait(gCdStreamSema);
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int32 channel = GetFirstInQueue(&gChannelRequestQ);
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#else
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int channel = *((int*)param);
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while (gpReadInfo[channel].nThreadStatus != 2){
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compat_sem_wait(&gpReadInfo[channel].pStartSemaphore);
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sem_wait(&gpReadInfo[channel].pStartSemaphore);
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#endif
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ASSERT( channel < gNumChannels );
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@ -462,22 +437,26 @@ void *CdStreamThread(void *param)
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if ( pChannel->bLocked )
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{
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compat_sem_post(&pChannel->pDoneSemaphore);
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sem_post(pChannel->pDoneSemaphore);
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}
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pChannel->bReading = false;
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}
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#ifndef ONE_THREAD_PER_CHANNEL
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for ( int32 i = 0; i < gNumChannels; i++ )
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{
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compat_sem_destroy(&gpReadInfo[i].pDoneSemaphore, "/semaphoredone");
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}
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compat_sem_destroy(&gCdStreamSema, "/semaphore");
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free(gChannelRequestQ.items);
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for ( int32 i = 0; i < gNumChannels; i++ )
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{
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sem_close(gpReadInfo[i].pDoneSemaphore);
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sem_unlink("/semaphore_done");
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}
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sem_close(gCdStreamSema);
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sem_unlink("/semaphore_cd_stream");
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free(gChannelRequestQ.items);
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#else
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compat_sem_destroy(&gpReadInfo[channel].pStartSemaphore, "/semaphorestart");
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compat_sem_destroy(&gpReadInfo[channel].pDoneSemaphore, "/semaphoredone");
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sem_close(gpReadInfo[channel].pStartSemaphore);
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sem_unlink("/semaphore_start");
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sem_close(gpReadInfo[channel].pDoneSemaphore);
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sem_unlink("/semaphore_done");
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#endif
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free(gpReadInfo);
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free(gpReadInfo);
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pthread_exit(nil);
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}
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