#include <threads.h>
#include <threads_int.h>
#include <errno.h>
+#include <mutex.h>
#include <semaphore.h>
+#include <hal_proc.h>
// Configuration
#define DEBUG_TRACE_TICKETS 0 // Trace ticket counts
#define SCHED_RR_SIM 2 // Single Queue Round Robin
#define SCHED_RR_PRI 3 // Multi Queue Round Robin
// Set scheduler type
-#define SCHEDULER_TYPE SCHED_LOTTERY
+#define SCHEDULER_TYPE SCHED_RR_PRI
// === CONSTANTS ===
-#define DEFAULT_QUANTUM 10
+#define DEFAULT_QUANTUM 5
#define DEFAULT_PRIORITY 5
#define MIN_PRIORITY 10
const enum eConfigTypes cCONFIG_TYPES[] = {
};
// === IMPORTS ===
-extern void ArchThreads_Init(void);
-extern void Proc_CallFaultHandler(tThread *Thread);
-extern void Proc_DumpThreadCPUState(tThread *Thread);
-extern int GetCPUNum(void);
// === PROTOTYPES ===
void Threads_Init(void);
SHORTREL( &glThreadListLock );
return -EOK;
+ case THREAD_STAT_SEMAPHORESLEEP: {
+ tSemaphore *sem;
+ tThread *th, *prev=NULL;
+
+ sem = Thread->WaitPointer;
+
+ SHORTLOCK( &sem->Protector );
+
+ // Remove from sleeping queue
+ for( th = sem->Waiting; th; prev = th, th = th->Next )
+ if( th == Thread ) break;
+ if( th )
+ {
+ if(prev)
+ prev->Next = Thread->Next;
+ else
+ sem->Waiting = Thread->Next;
+ if(sem->LastWaiting == Thread)
+ sem->LastWaiting = prev;
+ }
+ else
+ {
+ prev = NULL;
+ for( th = sem->Signaling; th; prev = th, th = th->Next )
+ if( th == Thread ) break;
+ if( !th ) {
+ Log_Warning("Threads", "Thread %p(%i %s) is not on semaphore %p(%s:%s)",
+ Thread, Thread->TID, Thread->ThreadName,
+ sem, sem->ModName, sem->Name);
+ return -EINTERNAL;
+ }
+
+ if(prev)
+ prev->Next = Thread->Next;
+ else
+ sem->Signaling = Thread->Next;
+ if(sem->LastSignaling == Thread)
+ sem->LastSignaling = prev;
+ }
+
+ SHORTLOCK( &glThreadListLock );
+ Threads_AddActive( Thread );
+ SHORTREL( &glThreadListLock );
+
+ #if DEBUG_TRACE_STATE
+ Log("Threads_Sleep: %p(%i %s) woken from semaphore", Thread, Thread->TID, Thread->ThreadName);
+ #endif
+ SHORTREL( &sem->Protector );
+ } return -EOK;
+
case THREAD_STAT_WAITING:
Warning("Threads_Wake - Waiting threads are not currently supported");
return -ENOTIMPL;
if( Thread->Status == THREAD_STAT_ACTIVE ) {
tThread *cur = Proc_GetCurThread();
- Warning("WTF, CPU%i %p (%i %s) is adding %p (%i %s) when it is active",
+ Log_Warning("Threads", "WTF, %p CPU%i %p (%i %s) is adding %p (%i %s) when it is active",
+ __builtin_return_address(0),
GetCPUNum(), cur, cur->TID, cur->ThreadName, Thread, Thread->TID, Thread->ThreadName);
SHORTREL( &glThreadListLock );
return ;
Thread->Status = THREAD_STAT_ACTIVE;
// Thread->CurCPU = -1;
// Add to active list
- #if SCHEDULER_TYPE == SCHED_RR_PRI
- Thread->Next = gaActiveThreads[Thread->Priority];
- gaActiveThreads[Thread->Priority] = Thread;
- #else
- Thread->Next = gActiveThreads;
- gActiveThreads = Thread;
- #endif
+ {
+ tThread *tmp, *prev = NULL;
+ #if SCHEDULER_TYPE == SCHED_RR_PRI
+ for( tmp = gaActiveThreads[Thread->Priority]; tmp; prev = tmp, tmp = tmp->Next );
+ if(prev)
+ prev->Next = Thread;
+ else
+ gaActiveThreads[Thread->Priority] = Thread;
+ #else
+ for( tmp = gActiveThreads; tmp; prev = tmp, tmp = tmp->Next );
+ if(prev)
+ prev->Next = Thread;
+ else
+ gActiveThreads = Thread;
+ #endif
+ Thread->Next = NULL;
+ }
// Update bookkeeping
giNumActiveThreads ++;
#endif
{
SHORTREL( &glThreadListLock );
+ Log_Warning("Threads", "Current thread %p(%i %s) is not on active queue",
+ ret, ret->TID, ret->ThreadName
+ );
return NULL;
}
{
tThread *thread = Proc_GetCurThread();
- Log_Log("Threads", "Threads_Fault: thread = %p", thread);
-
if(!thread) return ;
Log_Log("Threads", "Threads_Fault: thread->FaultHandler = %p", thread->FaultHandler);
// Double Fault? Oh, F**k
if(thread->CurFaultNum != 0) {
+ Log_Warning("Threads", "Threads_Fault: Double fault on %i", thread->TID);
Threads_Kill(thread, -1); // For now, just kill
HALT();
}
*/
void Threads_SegFault(tVAddr Addr)
{
- Warning("Thread #%i committed a segfault at address %p", Proc_GetCurThread()->TID, Addr);
+ tThread *cur = Proc_GetCurThread();
+ cur->bInstrTrace = 0;
+ Log_Warning("Threads", "Thread #%i committed a segfault at address %p", cur->TID, Addr);
+ MM_DumpTables(0, KERNEL_BASE);
Threads_Fault( 1 );
//Threads_Exit( 0, -1 );
}
}
// If we fall onto the same queue again, special handling is
// needed
- if( i == Last->Priority ) {
+ if( Last && i == Last->Priority ) {
tThread *savedThread = thread;
// Find the next unscheduled thread in the list
else
taken = Sem->Value;
Sem->Value -= taken;
- SHORTREL( &Sem->Protector );
}
else
{
SHORTREL( &Sem->Protector ); // Release first to make sure it is released
SHORTREL( &glThreadListLock );
while(us->Status == THREAD_STAT_SEMAPHORESLEEP) Threads_Yield();
- // We're only woken when there's something avaliable
+ // We're only woken when there's something avaliable (or a signal arrives)
us->WaitPointer = NULL;
taken = us->RetStatus;