yuzu/src/core/hle/kernel/thread.h
Yuri Kunde Schlesner c2588403c0 HLE: Revamp error handling throrough the HLE code
All service calls in the CTR OS return result codes indicating the
success or failure of the call. Previous to this commit, Citra's HLE
emulation of services and the kernel universally either ignored errors
or returned dummy -1 error codes.

This commit makes an initial effort to provide an infrastructure for
error reporting and propagation which can be use going forward to make
HLE calls accurately return errors as the original system. A few parts
of the code have been updated to use the new system where applicable.

One part of this effort is the definition of the `ResultCode` type,
which provides facilities for constructing and parsing error codes in
the structured format used by the CTR.

The `ResultVal` type builds on `ResultCode` by providing a container for
values returned by function that can report errors. It enforces that
correct error checking will be done on function returns by preventing
the use of the return value if the function returned an error code.

Currently this change is mostly internal since errors are still
suppressed on the ARM<->HLE border, as a temporary compatibility hack.
As functionality is implemented and tested this hack can be eventually
removed.
2014-11-24 17:08:36 -02:00

95 lines
3 KiB
C++

// Copyright 2014 Citra Emulator Project / PPSSPP Project
// Licensed under GPLv2
// Refer to the license.txt file included.
#pragma once
#include "common/common_types.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
enum ThreadPriority {
THREADPRIO_HIGHEST = 0, ///< Highest thread priority
THREADPRIO_DEFAULT = 16, ///< Default thread priority for userland apps
THREADPRIO_LOW = 31, ///< Low range of thread priority for userland apps
THREADPRIO_LOWEST = 63, ///< Thread priority max checked by svcCreateThread
};
enum ThreadProcessorId {
THREADPROCESSORID_0 = 0xFFFFFFFE, ///< Enables core appcode
THREADPROCESSORID_1 = 0xFFFFFFFD, ///< Enables core syscore
THREADPROCESSORID_ALL = 0xFFFFFFFC, ///< Enables both cores
};
enum ThreadStatus {
THREADSTATUS_RUNNING = 1,
THREADSTATUS_READY = 2,
THREADSTATUS_WAIT = 4,
THREADSTATUS_SUSPEND = 8,
THREADSTATUS_DORMANT = 16,
THREADSTATUS_DEAD = 32,
THREADSTATUS_WAITSUSPEND = THREADSTATUS_WAIT | THREADSTATUS_SUSPEND
};
enum WaitType {
WAITTYPE_NONE,
WAITTYPE_SLEEP,
WAITTYPE_SEMA,
WAITTYPE_EVENT,
WAITTYPE_THREADEND,
WAITTYPE_VBLANK,
WAITTYPE_MUTEX,
WAITTYPE_SYNCH,
WAITTYPE_ARB,
};
namespace Kernel {
/// Creates a new thread - wrapper for external user
Handle CreateThread(const char* name, u32 entry_point, s32 priority, u32 arg, s32 processor_id,
u32 stack_top, int stack_size=Kernel::DEFAULT_STACK_SIZE);
/// Sets up the primary application thread
Handle SetupMainThread(s32 priority, int stack_size=Kernel::DEFAULT_STACK_SIZE);
/// Reschedules to the next available thread (call after current thread is suspended)
void Reschedule();
/// Stops the current thread
ResultCode StopThread(Handle thread, const char* reason);
/// Resumes a thread from waiting by marking it as "ready"
void ResumeThreadFromWait(Handle handle);
/// Arbitrate the highest priority thread that is waiting
Handle ArbitrateHighestPriorityThread(u32 arbiter, u32 address);
/// Arbitrate all threads currently waiting...
void ArbitrateAllThreads(u32 arbiter, u32 address);
/// Gets the current thread handle
Handle GetCurrentThreadHandle();
/**
* Puts the current thread in the wait state for the given type
* @param wait_type Type of wait
* @param wait_handle Handle of Kernel object that we are waiting on, defaults to current thread
*/
void WaitCurrentThread(WaitType wait_type, Handle wait_handle=GetCurrentThreadHandle());
/// Put current thread in a wait state - on WaitSynchronization
void WaitThread_Synchronization();
/// Get the priority of the thread specified by handle
ResultVal<u32> GetThreadPriority(const Handle handle);
/// Set the priority of the thread specified by handle
ResultCode SetThreadPriority(Handle handle, s32 priority);
/// Initialize threading
void ThreadingInit();
/// Shutdown threading
void ThreadingShutdown();
} // namespace