#include <errno.h>
#include <mutex.h>
#include <semaphore.h>
+#include <hal_proc.h>
// Configuration
#define DEBUG_TRACE_TICKETS 0 // Trace ticket counts
};
// === 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);
Log_Debug("Threads", "Offsets of tThread");
Log_Debug("Threads", ".Priority = %i", offsetof(tThread, Priority));
+ Log_Debug("Threads", ".KernelStack = %i", offsetof(tThread, KernelStack));
// Create Initial Task
#if SCHEDULER_TYPE == SCHED_RR_PRI
}
/**
- * \fn tThread *Threads_CloneTCB(Uint *Err, Uint Flags)
* \brief Clone the TCB of the current thread
- * \param Err Error pointer
* \param Flags Flags for something... (What is this for?)
*/
-tThread *Threads_CloneTCB(Uint *Err, Uint Flags)
+tThread *Threads_CloneTCB(Uint Flags)
{
tThread *cur, *new;
int i;
// Allocate and duplicate
new = malloc(sizeof(tThread));
- if(new == NULL) { *Err = -ENOMEM; return NULL; }
+ if(new == NULL) { errno = -ENOMEM; return NULL; }
memcpy(new, cur, sizeof(tThread));
new->CurCPU = -1;
}
/**
- * \fn tThread *Threads_CloneTCB(Uint *Err, Uint Flags)
- * \brief Clone the TCB of the current thread
+ * \brief Clone the TCB of the kernel thread
*/
tThread *Threads_CloneThreadZero(void)
{
SHORTREL( &Thread->IsLocked ); // TODO: We may not actually be released...
// And, reschedule
- if(isCurThread) {
+ if(isCurThread)
+ {
for( ;; )
- HALT();
+ Proc_Reschedule();
}
}
*/
void Threads_Yield(void)
{
- tThread *thread = Proc_GetCurThread();
- thread->Remaining = 0;
- //while(thread->Remaining == 0)
- HALT();
+ Proc_Reschedule();
}
/**
// Release Spinlock
SHORTREL( &glThreadListLock );
-
- while(cur->Status != THREAD_STAT_ACTIVE) HALT();
+
+ while(cur->Status != THREAD_STAT_ACTIVE) {
+ Proc_Reschedule();
+ if( cur->Status != THREAD_STAT_ACTIVE )
+ Log("%i - Huh? why am I up? zzzz...", cur->TID);
+ }
}
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 ;
/**
* \brief Removes the current thread from the active queue
- * \warning This should ONLY be called with task switches disabled
+ * \warning This should ONLY be called with the lock held
* \return Current thread pointer
*/
tThread *Threads_RemActive(void)
{
tThread *ret = Proc_GetCurThread();
-
- SHORTLOCK( &glThreadListLock );
+
+ if( !IS_LOCKED(&glThreadListLock) ) {
+ Log_KernelPanic("Threads", "Threads_RemActive called without lock held");
+ return NULL;
+ }
// Delete from active queue
#if SCHEDULER_TYPE == SCHED_RR_PRI
GetCPUNum(), ret, ret->TID, ret->ThreadName, giFreeTickets);
#endif
- SHORTREL( &glThreadListLock );
-
return ret;
}
// 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, USER_MAX);
Threads_Fault( 1 );
//Threads_Exit( 0, -1 );
}
if( gaThreads_NoTaskSwitch[CPU] )
return Last;
-
// Lock thread list
SHORTLOCK( &glThreadListLock );
}
// If we fall onto the same queue again, special handling is
// needed
- if( Last && i == Last->Priority ) {
+ if( Last && Last->Status == THREAD_STAT_ACTIVE && i == Last->Priority ) {
tThread *savedThread = thread;
// Find the next unscheduled thread in the list
SHORTREL(&glThreadListLock);
return NULL;
}
+ if( thread->Status != THREAD_STAT_ACTIVE ) {
+ LogF("Oops, Thread %i (%s) is not active\n", thread->TID, thread->ThreadName);
+ }
}
#elif SCHEDULER_TYPE == SCHED_RR_SIM
{
// Make the new thread non-schedulable
thread->CurCPU = CPU;
+ thread->Remaining = thread->Quantum;
SHORTREL( &glThreadListLock );