mirror of
https://github.com/PabloMK7/citra.git
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6e11570862
Uses less memory (strings and function table is stored in constant data) and speeds up start up (no need to allocate and copy strings).
123 lines
3.9 KiB
C++
123 lines
3.9 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <algorithm>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include <boost/container/flat_map.hpp>
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#include "common/common.h"
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#include "common/string_util.h"
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#include "core/mem_map.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/session.h"
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#include "core/hle/svc.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// Namespace Service
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namespace Service {
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static const int kMaxPortSize = 8; ///< Maximum size of a port name (8 characters)
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class Manager;
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/// Interface to a CTROS service
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class Interface : public Kernel::Session {
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// TODO(yuriks): An "Interface" being a Kernel::Object is mostly non-sense. Interface should be
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// just something that encapsulates a session and acts as a helper to implement service
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// processes.
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friend class Manager;
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/**
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* Creates a function string for logging, complete with the name (or header code, depending
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* on what's passed in) the port name, and all the cmd_buff arguments.
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*/
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std::string MakeFunctionString(const char* name, const char* port_name, const u32* cmd_buff) {
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// Number of params == bits 0-5 + bits 6-11
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int num_params = (cmd_buff[0] & 0x3F) + ((cmd_buff[0] >> 6) & 0x3F);
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std::string function_string = Common::StringFromFormat("function '%s': port=%s", name, port_name);
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for (int i = 1; i <= num_params; ++i) {
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function_string += Common::StringFromFormat(", cmd_buff[%i]=%u", i, cmd_buff[i]);
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}
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return function_string;
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}
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public:
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std::string GetName() const override { return GetPortName(); }
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typedef void (*Function)(Interface*);
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struct FunctionInfo {
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u32 id;
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Function func;
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const char* name;
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};
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/**
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* Gets the string name used by CTROS for a service
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* @return Port name of service
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*/
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virtual std::string GetPortName() const {
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return "[UNKNOWN SERVICE PORT]";
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}
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ResultVal<bool> SyncRequest() override {
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u32* cmd_buff = Kernel::GetCommandBuffer();
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auto itr = m_functions.find(cmd_buff[0]);
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if (itr == m_functions.end() || itr->second.func == nullptr) {
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std::string function_name = (itr == m_functions.end()) ? Common::StringFromFormat("0x%08X", cmd_buff[0]) : itr->second.name;
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LOG_ERROR(Service, "unknown / unimplemented %s", MakeFunctionString(function_name.c_str(), GetPortName().c_str(), cmd_buff).c_str());
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// TODO(bunnei): Hack - ignore error
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cmd_buff[1] = 0;
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return MakeResult<bool>(false);
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} else {
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LOG_TRACE(Service, "%s", MakeFunctionString(itr->second.name, GetPortName().c_str(), cmd_buff).c_str());
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}
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itr->second.func(this);
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return MakeResult<bool>(false); // TODO: Implement return from actual function
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}
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protected:
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/**
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* Registers the functions in the service
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*/
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template <size_t N>
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void Register(const FunctionInfo (&functions)[N]) {
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m_functions.reserve(N);
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for (auto& fn : functions) {
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// Usually this array is sorted by id already, so hint to instead at the end
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m_functions.emplace_hint(m_functions.cend(), fn.id, fn);
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}
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}
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private:
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boost::container::flat_map<u32, FunctionInfo> m_functions;
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};
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/// Initialize ServiceManager
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void Init();
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/// Shutdown ServiceManager
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void Shutdown();
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/// Map of named ports managed by the kernel, which can be retrieved using the ConnectToPort SVC.
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extern std::unordered_map<std::string, Kernel::SharedPtr<Interface>> g_kernel_named_ports;
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/// Map of services registered with the "srv:" service, retrieved using GetServiceHandle.
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extern std::unordered_map<std::string, Kernel::SharedPtr<Interface>> g_srv_services;
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} // namespace
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