- added enum ThreadProcessorId

- reorganized some kernel thread functions
- added placeholder __KernelWaitThread_Synchronization function
This commit is contained in:
bunnei 2014-05-17 00:56:00 -04:00
parent 43bc2ac724
commit 14ae026386
2 changed files with 107 additions and 53 deletions

View file

@ -21,20 +21,14 @@
// Enums // Enums
enum ThreadPriority {
THREADPRIO_HIGHEST = 0,
THREADPRIO_DEFAULT = 16,
THREADPRIO_LOWEST = 31,
};
enum ThreadStatus { enum ThreadStatus {
THREADSTATUS_RUNNING = 1, THREADSTATUS_RUNNING = 1,
THREADSTATUS_READY = 2, THREADSTATUS_READY = 2,
THREADSTATUS_WAIT = 4, THREADSTATUS_WAIT = 4,
THREADSTATUS_SUSPEND = 8, THREADSTATUS_SUSPEND = 8,
THREADSTATUS_DORMANT = 16, THREADSTATUS_DORMANT = 16,
THREADSTATUS_DEAD = 32, THREADSTATUS_DEAD = 32,
THREADSTATUS_WAITSUSPEND = THREADSTATUS_WAIT | THREADSTATUS_SUSPEND THREADSTATUS_WAITSUSPEND = THREADSTATUS_WAIT | THREADSTATUS_SUSPEND
}; };
enum WaitType { enum WaitType {
@ -46,8 +40,6 @@ enum WaitType {
WAITTYPE_VBLANK, WAITTYPE_VBLANK,
WAITTYPE_MUTEX, WAITTYPE_MUTEX,
WAITTYPE_SYNCH, WAITTYPE_SYNCH,
NUM_WAITTYPES
}; };
typedef s32 Handle; typedef s32 Handle;
@ -164,32 +156,6 @@ void __KernelResetThread(Thread *t, s32 lowest_priority) {
t->wait_type = WAITTYPE_NONE; t->wait_type = WAITTYPE_NONE;
} }
/// Creates a new thread
Thread *__KernelCreateThread(Handle &handle, const char *name, u32 entry_point, s32 priority,
s32 processor_id, u32 stack_top, int stack_size) {
static u32 _handle_count = 1;
Thread *t = new Thread;
handle = (_handle_count++);
g_thread_queue.push_back(handle);
g_thread_ready_queue.prepare(priority);
t->status = THREADSTATUS_DORMANT;
t->entry_point = entry_point;
t->stack_top = stack_top;
t->stack_size = stack_size;
t->initial_priority = t->current_priority = priority;
t->processor_id = processor_id;
t->wait_type = WAITTYPE_NONE;
strncpy(t->name, name, KERNEL_MAX_NAME_LENGTH);
t->name[KERNEL_MAX_NAME_LENGTH] = '\0';
return t;
}
/// Change a thread to "ready" state /// Change a thread to "ready" state
void __KernelChangeReadyState(Thread *t, bool ready) { void __KernelChangeReadyState(Thread *t, bool ready) {
Handle handle = t->GetHandle(); Handle handle = t->GetHandle();
@ -222,6 +188,79 @@ void __KernelChangeThreadState(Thread *t, ThreadStatus new_status) {
} }
} }
/// Calls a thread by marking it as "ready" (note: will not actually execute until current thread yields)
void __KernelCallThread(Thread *t) {
// Stop waiting
if (t->wait_type != WAITTYPE_NONE) {
t->wait_type = WAITTYPE_NONE;
}
__KernelChangeThreadState(t, THREADSTATUS_READY);
}
/// Creates a new thread
Thread *__KernelCreateThread(Handle &handle, const char *name, u32 entry_point, s32 priority,
s32 processor_id, u32 stack_top, int stack_size) {
Thread *t = new Thread;
handle = g_kernel_objects.Create(t);
g_thread_queue.push_back(handle);
g_thread_ready_queue.prepare(priority);
t->status = THREADSTATUS_DORMANT;
t->entry_point = entry_point;
t->stack_top = stack_top;
t->stack_size = stack_size;
t->initial_priority = t->current_priority = priority;
t->processor_id = processor_id;
t->wait_type = WAITTYPE_NONE;
strncpy(t->name, name, KERNEL_MAX_NAME_LENGTH);
t->name[KERNEL_MAX_NAME_LENGTH] = '\0';
return t;
}
/// Creates a new thread - wrapper for external user
Handle __KernelCreateThread(const char *name, u32 entry_point, s32 priority, s32 processor_id,
u32 stack_top, int stack_size) {
if (name == NULL) {
ERROR_LOG(KERNEL, "__KernelCreateThread(): NULL name");
return -1;
}
if ((u32)stack_size < 0x200) {
ERROR_LOG(KERNEL, "__KernelCreateThread(name=%s): invalid stack_size=0x%08X", name,
stack_size);
return -1;
}
if (priority < THREADPRIO_HIGHEST || priority > THREADPRIO_LOWEST) {
s32 new_priority = CLAMP(priority, THREADPRIO_HIGHEST, THREADPRIO_LOWEST);
WARN_LOG(KERNEL, "__KernelCreateThread(name=%s): invalid priority=0x%08X, clamping to %08X",
name, priority, new_priority);
// TODO(bunnei): Clamping to a valid priority is not necessarily correct behavior... Confirm
// validity of this
priority = new_priority;
}
if (!Memory::GetPointer(entry_point)) {
ERROR_LOG(KERNEL, "__KernelCreateThread(name=%s): invalid entry %08x", name, entry_point);
return -1;
}
Handle handle;
Thread *t = __KernelCreateThread(handle, name, entry_point, priority, processor_id, stack_top,
stack_size);
HLE::EatCycles(32000);
// This won't schedule to the new thread, but it may to one woken from eating cycles.
// Technically, this should not eat all at once, and reschedule in the middle, but that's hard.
HLE::ReSchedule("thread created");
__KernelCallThread(t);
return handle;
}
/// Switches CPU context to that of the specified thread /// Switches CPU context to that of the specified thread
void __KernelSwitchContext(Thread* t, const char *reason) { void __KernelSwitchContext(Thread* t, const char *reason) {
Thread *cur = __GetCurrentThread(); Thread *cur = __GetCurrentThread();
@ -262,22 +301,13 @@ Thread *__KernelNextThread() {
return g_kernel_objects.GetFast<Thread>(next); return g_kernel_objects.GetFast<Thread>(next);
} }
/// Calls a thread by marking it as "ready" (note: will not actually execute until current thread yields)
void __KernelCallThread(Thread *t) {
// Stop waiting
if (t->wait_type != WAITTYPE_NONE) {
t->wait_type = WAITTYPE_NONE;
}
__KernelChangeThreadState(t, THREADSTATUS_READY);
}
/// Sets up the primary application thread /// Sets up the primary application thread
Handle __KernelSetupMainThread(s32 priority, int stack_size) { Handle __KernelSetupMainThread(s32 priority, int stack_size) {
Handle handle; Handle handle;
// Initialize new "main" thread // Initialize new "main" thread
Thread *t = __KernelCreateThread(handle, "main", Core::g_app_core->GetPC(), priority, Thread *t = __KernelCreateThread(handle, "main", Core::g_app_core->GetPC(), priority,
0xFFFFFFFE, Memory::SCRATCHPAD_VADDR_END, stack_size); THREADPROCESSORID_0, Memory::SCRATCHPAD_VADDR_END, stack_size);
__KernelResetThread(t, 0); __KernelResetThread(t, 0);
@ -322,6 +352,15 @@ void __KernelReschedule(const char *reason) {
} }
} }
////////////////////////////////////////////////////////////////////////////////////////////////////
/// Wait thread - on WaitSynchronization
void __KernelWaitThread_Synchronization() {
// TODO(bunnei): Just a placeholder function for now... FixMe
__KernelWaitCurThread(WAITTYPE_SYNCH, "waitSynchronization called");
}
////////////////////////////////////////////////////////////////////////////////////////////////////
void __KernelThreadingInit() { void __KernelThreadingInit() {
} }

View file

@ -9,8 +9,20 @@
class Thread; class Thread;
/// Creates a new thread enum ThreadPriority {
Thread *__KernelCreateThread(Handle &handle, const char *name, u32 entry_point, s32 priority, THREADPRIO_HIGHEST = 0,
THREADPRIO_DEFAULT = 16,
THREADPRIO_LOWEST = 31,
};
enum ThreadProcessorId {
THREADPROCESSORID_0 = 0xFFFFFFFE,
THREADPROCESSORID_1 = 0xFFFFFFFD,
THREADPROCESSORID_ALL = 0xFFFFFFFC,
};
/// Creates a new thread - wrapper for external user
Handle __KernelCreateThread(const char *name, u32 entry_point, s32 priority,
s32 processor_id, u32 stack_top, int stack_size=KERNEL_DEFAULT_STACK_SIZE); s32 processor_id, u32 stack_top, int stack_size=KERNEL_DEFAULT_STACK_SIZE);
/// Sets up the primary application thread /// Sets up the primary application thread
@ -18,3 +30,6 @@ Handle __KernelSetupMainThread(s32 priority, int stack_size=KERNEL_DEFAULT_STACK
void __KernelThreadingInit(); void __KernelThreadingInit();
void __KernelThreadingShutdown(); void __KernelThreadingShutdown();
/// Wait thread - on WaitSynchronization
void __KernelWaitThread_Synchronization();