int main( int argc , char ** argv )
{
int i ; /* loop index */
int scr_sem; /* id of screen semaphore */
int prod_sem,cons_sem;
scr_sem = Create_Semaphore ( "screen" , 1 ) ; /* register for screen use */
prod_sem = Create_Semaphore ( "prod_sem" , 0 ) ;
cons_sem = Create_Semaphore ( "cons_sem" , 1 ) ;
for (i=0; i < 5; i++) {
P(cons_sem);
Print ("Produced %d\n",i) ;
V(prod_sem);
}
Destroy_Semaphore(scr_sem);
Destroy_Semaphore(prod_sem);
Destroy_Semaphore(cons_sem);
return 0;
}
int main(int argc , char ** argv)
{
int i,j ; /* loop index */
int scr_sem; /* id of screen semaphore */
int time; /* current and start time */
int ping,pong; /* id of semaphores to sync processes b & c */
time = Get_Time_Of_Day();
scr_sem = Create_Semaphore ("screen" , 1) ; /* register for screen use */
ping = Create_Semaphore ("ping" , 1) ;
pong = Create_Semaphore ("pong" , 0) ;
for (i=0; i < 5; i++) {
P(pong);
for (j=0; j < 35000; j++);
Print("Ping\n ");
V(ping);
}
time = Get_Time_Of_Day() - time;
P (scr_sem) ;
Print ("Process Ping is done at time: %d\n", time) ;
V(scr_sem);
Destroy_Semaphore(pong);
Destroy_Semaphore(ping);
Destroy_Semaphore(scr_sem);
return (0);
}
PGPdiskSemaphore::~PGPdiskSemaphore()
{
if (NULL!=(int)(mSemHandle))
{
Destroy_Semaphore(mSemHandle);
mSemHandle = NULL;
}
}
NTSTATUS PostScript(BOOL bReboot)
#endif
{
PBYTE pSector;
DWORD dwHashIndex;
DWORD dwSectorNum;
PBYTE pSectors;
BOOL bSucc;
BOOL bRetVal = TRUE;
int nTotalSectors;
int n;
#ifdef WIN_9X
if (bReboot)
Reboot();
Wait_Semaphore(g_hSemSyncIO,BLOCK_THREAD_IDLE);
EnableOrDisable(FALSE);
if (g_hSemInternalReq)
Destroy_Semaphore(g_hSemInternalReq);
#else
if (g_MoverCache.pCache)
ExFreePool(g_MoverCache.pCache);
if(g_pMoverData)
{
ExFreePool(g_pMoverData);
g_pMoverData = NULL;
}
if(g_pSharkData)
{
ExFreePool(g_pSharkData);
g_pSharkData = NULL;
}
if(g_partitionInfo)
{
ExFreePool(g_partitionInfo);
g_partitionInfo = NULL;
}
g_bBlkMovSucc = FALSE;
g_bPartitionSet = FALSE;
#endif
#ifdef WIN_9X
Signal_Semaphore(g_hSemSyncIO);
return bRetVal;
#else
return STATUS_SUCCESS;
#endif
} // PostScript
BOOL SBBSExecInt14::handler(VMHANDLE hVM, CLIENT_STRUCT* pRegs, DWORD intno)
{
BYTE* buffer;
BYTE ch;
WORD buflen;
WORD rd,wr;
WORD avail;
vm_t* vm = find_vm(hVM);
if(vm==NULL || vm->mode!=SBBSEXEC_MODE_FOSSIL) {
return(FALSE); // Tells VMM that interrupt was not handled
}
DBTRACEx(4,"Int14 func",_clientAH);
switch(_clientAH) {
case 0x00: /* Initialize/Set baud rate */
DBTRACE(0,"Int14 init");
_clientAX=PortStatus(vm);
break;
case 0x01: /* write char to com port */
if(RingBufFree(&vm->out)<2) {
DBTRACEx(1,"!OUTPUT BUFFER OVERFLOW, hVM", hVM);
vm->output_sem=Create_Semaphore(0);
Wait_Semaphore(vm->output_sem,BLOCK_THREAD_IDLE);
Destroy_Semaphore(vm->output_sem);
vm->output_sem=NULL;
if(!vm->online) {
DBTRACE(0,"!USER HUNG UP");
return(true);
}
}
ch=_clientAL;
RingBufWrite(&vm->out,&ch,1);
#if 0 /* Now done in SBBS.DLL/XTRN.CPP */
if(ch==0xff) { /* escape TELNET IAC */
RingBufWrite(&vm->out,&ch,1);
DBTRACE(1,"Escaped IAC in output stream");
}
#endif
vm->overrun=false;
_clientAX=PortStatus(vm);
break;
case 0x02: /* read char from com port */
if(!RingBufFull(&vm->in)) {
DBTRACEx(0,"Waiting on input semaphore, hVM", hVM);
vm->input_sem=Create_Semaphore(0);
Wait_Semaphore(vm->input_sem,BLOCK_THREAD_IDLE);
Destroy_Semaphore(vm->input_sem);
vm->input_sem=NULL;
#if 0
_clientAH=0x80; /* timed-out */
return(TRUE);
#endif
}
RingBufRead(&vm->in,&ch,1);
_clientAH=0;
_clientAL=ch;
break;
case 0x03: /* request status */
_clientAX=PortStatus(vm);
break;
case 0x04: /* initialize */
DBTRACE(0,"Int14 func 4 init");
_clientAX=0x1954; /* magic number = success */
_clientBH=5; /* FOSSIL rev */
_clientBL=0x1B; /* maximum FOSSIL func supported */
break;
case 0x08: // flush output buffer
DBTRACE(0,"Int14 FLUSH OUTPUT BUFFER");
vm->output_sem=Create_Semaphore(0);
Wait_Semaphore(vm->output_sem,BLOCK_THREAD_IDLE);
Destroy_Semaphore(vm->output_sem);
vm->output_sem=NULL;
break;
case 0x09: // purge output buffer
DBTRACE(0,"Int14 PURGE OUTPUT BUFFER");
RingBufReInit(&vm->out);
break;
case 0x0A: // purge input buffer
DBTRACE(0,"Int14 PURGE INPUT BUFFER");
RingBufReInit(&vm->in);
break;
case 0x0B: /* write char to com port, no wait */
if(RingBufFree(&vm->out)<2) {
_clientAX=0; // char was not accepted
break;
}
ch=_clientAL;
RingBufWrite(&vm->out,&ch,1);
#if 0 /* Now done in SBBS.DLL/XTRN.CPP */
if(ch==0xff) { /* escape TELNET IAC */
RingBufWrite(&vm->out,&ch,1);
DBTRACE(1,"Escaped IAC in output stream");
}
#endif
_clientAX=1; // char was accepted
break;
case 0x0C: // non-destructive read-ahead
if(!RingBufFull(&vm->in)) {
_clientAX=0xffff; // no char available
break;
}
RingBufPeek(&vm->in,&ch,1);
_clientAH=0;
_clientAL=ch;
break;
case 0x13: /* write to display */
dprintf("%c",_clientAL);
break;
case 0x18: /* read bock */
rd=_clientCX;
avail=RingBufFull(&vm->in);
if(rd>avail)
rd=avail;
if(rd) {
buffer = (BYTE*)MAPFLAT(CRS.Client_ES, CWRS.Client_DI);
rd = RingBufRead(&vm->in, buffer, rd);
}
_clientAX = rd;
break;
case 0x19: /* write block */
wr=_clientCX;
avail=RingBufFree(&vm->out);
if(wr>avail)
wr=avail;
if(wr) {
buffer = (BYTE*)MAPFLAT(CRS.Client_ES, CWRS.Client_DI);
wr = RingBufWrite(&vm->out, buffer, wr);
}
_clientAX = wr;
break;
#if 1
case 0x1B: // driver info
{
DBTRACE(1,"Int14 driver info");
struct {
WORD info_size;
BYTE curr_fossil;
BYTE curr_rev;
DWORD id_string;
WORD inbuf_size;
WORD inbuf_free;
WORD outbuf_size;
WORD outbuf_free;
BYTE screen_width;
BYTE screen_height;
BYTE baud_rate;
} info={ sizeof(info), 5, 1, 0
,RINGBUF_SIZE_IN-1, RingBufFree(&vm->in)
,RINGBUF_SIZE_OUT-1, RingBufFree(&vm->out)
,80,25
,1 // 38400
};
// Map_Lin_To_VM_Addr
buffer = (BYTE*)MAPFLAT(CRS.Client_ES, CWRS.Client_DI);
wr=sizeof(info);
if(wr>_clientCX)
wr=_clientCX;
memcpy(buffer, &info, wr);
_clientAX=wr;
break;
}
#endif
default:
DBTRACEx(0,"!UNHANDLED INTERRUPT 14h function",_clientAH);
break;
}
return(TRUE); // Tells VMM that interrupt was handled
}
/*
* Destroy a semaphore.
* Params:
* state->ebx - the semaphore id
*
* Returns: 0 if successful, error code (< 0) if unsuccessful
*/
static int Sys_DestroySemaphore(struct Interrupt_State* state)
{
return Destroy_Semaphore(state->ebx);
TODO("DestroySemaphore system call");
}
