citra/src/core/hle/service/service.h
Yuri Kunde Schlesner 7e2903cb74 Kernel: New handle manager
This handle manager more closely mirrors the behaviour of the CTR-OS
one. In addition object ref-counts and support for DuplicateHandle have
been added.

Note that support for DuplicateHandle is still experimental, since parts
of the kernel still use Handles internally, which will likely cause
troubles if two different handles to the same object are used to e.g.
wait on a synchronization primitive.
2014-12-28 11:52:55 -02:00

152 lines
4.1 KiB
C++

// Copyright 2014 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <vector>
#include <map>
#include <string>
#include "common/common.h"
#include "common/string_util.h"
#include "core/mem_map.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/session.h"
#include "core/hle/svc.h"
////////////////////////////////////////////////////////////////////////////////////////////////////
// Namespace Service
namespace Service {
static const int kMaxPortSize = 8; ///< Maximum size of a port name (8 characters)
class Manager;
/// Interface to a CTROS service
class Interface : public Kernel::Session {
// TODO(yuriks): An "Interface" being a Kernel::Object is mostly non-sense. Interface should be
// just something that encapsulates a session and acts as a helper to implement service
// processes.
friend class Manager;
public:
std::string GetName() const override { return GetPortName(); }
typedef void (*Function)(Interface*);
struct FunctionInfo {
u32 id;
Function func;
std::string name;
};
/**
* Gets the string name used by CTROS for a service
* @return Port name of service
*/
virtual std::string GetPortName() const {
return "[UNKNOWN SERVICE PORT]";
}
/// Allocates a new handle for the service
Handle CreateHandle(Kernel::Object *obj) {
// TODO(yuriks): Fix error reporting
Handle handle = Kernel::g_handle_table.Create(obj).ValueOr(INVALID_HANDLE);
m_handles.push_back(handle);
return handle;
}
/// Frees a handle from the service
template <class T>
void DeleteHandle(const Handle handle) {
Kernel::g_handle_table.Close(handle);
m_handles.erase(std::remove(m_handles.begin(), m_handles.end(), handle), m_handles.end());
}
ResultVal<bool> SyncRequest() override {
u32* cmd_buff = Kernel::GetCommandBuffer();
auto itr = m_functions.find(cmd_buff[0]);
if (itr == m_functions.end() || itr->second.func == nullptr) {
// Number of params == bits 0-5 + bits 6-11
int num_params = (cmd_buff[0] & 0x3F) + ((cmd_buff[0] >> 6) & 0x3F);
std::string error = "unknown/unimplemented function '%s': port=%s";
for (int i = 1; i <= num_params; ++i) {
error += Common::StringFromFormat(", cmd_buff[%i]=%u", i, cmd_buff[i]);
}
std::string name = (itr == m_functions.end()) ? Common::StringFromFormat("0x%08X", cmd_buff[0]) : itr->second.name;
LOG_ERROR(Service, error.c_str(), name.c_str(), GetPortName().c_str());
// TODO(bunnei): Hack - ignore error
cmd_buff[1] = 0;
return MakeResult<bool>(false);
}
itr->second.func(this);
return MakeResult<bool>(false); // TODO: Implement return from actual function
}
protected:
/**
* Registers the functions in the service
*/
void Register(const FunctionInfo* functions, int len) {
for (int i = 0; i < len; i++) {
m_functions[functions[i].id] = functions[i];
}
}
private:
std::vector<Handle> m_handles;
std::map<u32, FunctionInfo> m_functions;
};
/// Simple class to manage accessing services from ports and UID handles
class Manager {
public:
Manager();
~Manager();
/// Add a service to the manager (does not create it though)
void AddService(Interface* service);
/// Removes a service from the manager (does not delete it though)
void DeleteService(const std::string& port_name);
/// Get a Service Interface from its UID
Interface* FetchFromHandle(u32 uid);
/// Get a Service Interface from its port
Interface* FetchFromPortName(const std::string& port_name);
private:
std::vector<Interface*> m_services;
std::map<std::string, u32> m_port_map;
};
/// Initialize ServiceManager
void Init();
/// Shutdown ServiceManager
void Shutdown();
extern Manager* g_manager; ///< Service manager
} // namespace