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// Copyright 2014 Citra Emulator Project / PPSSPP Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <string>
#include "common/common.h"
#include "core/hle/result.h"
typedef u32 Handle;
typedef s32 Result;
namespace Kernel {
// From kernel.h. Declarations duplicated here to avoid a circular header dependency.
class Thread;
Thread* GetCurrentThread();
enum KernelHandle {
CurrentThread = 0xFFFF8000,
CurrentProcess = 0xFFFF8001,
};
enum class HandleType : u32 {
Unknown = 0,
Port = 1,
Session = 2,
Event = 3,
Mutex = 4,
SharedMemory = 5,
Redirection = 6,
Thread = 7,
Process = 8,
AddressArbiter = 9,
Semaphore = 10,
};
enum {
DEFAULT_STACK_SIZE = 0x4000,
};
class ObjectPool;
class Object : NonCopyable {
friend class ObjectPool;
u32 handle;
public:
virtual ~Object() {}
Handle GetHandle() const { return handle; }
virtual std::string GetTypeName() const { return "[BAD KERNEL OBJECT TYPE]"; }
virtual std::string GetName() const { return "[UNKNOWN KERNEL OBJECT]"; }
virtual Kernel::HandleType GetHandleType() const = 0;
/**
* Wait for kernel object to synchronize.
* @return True if the current thread should wait as a result of the wait
*/
virtual ResultVal<bool> WaitSynchronization() {
LOG_ERROR(Kernel, "(UNIMPLEMENTED)");
return UnimplementedFunction(ErrorModule::Kernel);
}
};
class ObjectPool : NonCopyable {
public:
ObjectPool();
~ObjectPool() {}
// Allocates a handle within the range and inserts the object into the map.
Handle Create(Object* obj, int range_bottom=INITIAL_NEXT_ID, int range_top=0x7FFFFFFF);
static Object* CreateByIDType(int type);
template <class T>
void Destroy(Handle handle) {
if (Get<T>(handle)) {
occupied[handle - HANDLE_OFFSET] = false;
delete pool[handle - HANDLE_OFFSET];
}
}
bool IsValid(Handle handle) const;
template <class T>
T* Get(Handle handle) {
if (handle == CurrentThread) {
return reinterpret_cast<T*>(GetCurrentThread());
}
if (handle < HANDLE_OFFSET || handle >= HANDLE_OFFSET + MAX_COUNT || !occupied[handle - HANDLE_OFFSET]) {
if (handle != 0) {
LOG_ERROR(Kernel, "Bad object handle %08x", handle);
}
return nullptr;
} else {
Object* t = pool[handle - HANDLE_OFFSET];
if (t->GetHandleType() != T::GetStaticHandleType()) {
LOG_ERROR(Kernel, "Wrong object type for %08x", handle);
return nullptr;
}
return static_cast<T*>(t);
}
}
// ONLY use this when you know the handle is valid.
template <class T>
T *GetFast(Handle handle) {
if (handle == CurrentThread) {
return reinterpret_cast<T*>(GetCurrentThread());
}
const Handle realHandle = handle - HANDLE_OFFSET;
_dbg_assert_(Kernel, realHandle >= 0 && realHandle < MAX_COUNT && occupied[realHandle]);
return static_cast<T*>(pool[realHandle]);
}
template <class T, typename ArgT>
void Iterate(bool func(T*, ArgT), ArgT arg) {
int type = T::GetStaticIDType();
for (int i = 0; i < MAX_COUNT; i++)
{
if (!occupied[i])
continue;
T* t = static_cast<T*>(pool[i]);
if (t->GetIDType() == type) {
if (!func(t, arg))
break;
}
}
}
bool GetIDType(Handle handle, HandleType* type) const {
if ((handle < HANDLE_OFFSET) || (handle >= HANDLE_OFFSET + MAX_COUNT) ||
!occupied[handle - HANDLE_OFFSET]) {
LOG_ERROR(Kernel, "Bad object handle %08X", handle);
return false;
}
Object* t = pool[handle - HANDLE_OFFSET];
*type = t->GetHandleType();
return true;
}
Object* &operator [](Handle handle);
void List();
void Clear();
int GetCount() const;
private:
enum {
MAX_COUNT = 0x1000,
HANDLE_OFFSET = 0x100,
INITIAL_NEXT_ID = 0x10,
};
std::array<Object*, MAX_COUNT> pool;
std::array<bool, MAX_COUNT> occupied;
int next_id;
};
extern ObjectPool g_object_pool;
extern Handle g_main_thread;
/// The ID code of the currently running game
/// TODO(Subv): This variable should not be here,
/// we need a way to store information about the currently loaded application
/// for later query during runtime, maybe using the LDR service?
extern u64 g_program_id;
/// Initialize the kernel
void Init();
/// Shutdown the kernel
void Shutdown();
/**
* Loads executable stored at specified address
* @entry_point Entry point in memory of loaded executable
* @return True on success, otherwise false
*/
bool LoadExec(u32 entry_point);
} // namespace
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