mirror of https://github.com/yuzu-emu/yuzu.git
103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "core/hle/kernel/k_object_name.h"
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namespace Kernel {
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KObjectNameGlobalData::KObjectNameGlobalData(KernelCore& kernel) : m_object_list_lock{kernel} {}
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KObjectNameGlobalData::~KObjectNameGlobalData() = default;
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void KObjectName::Initialize(KAutoObject* obj, const char* name) {
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// Set member variables.
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m_object = obj;
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std::strncpy(m_name.data(), name, sizeof(m_name) - 1);
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m_name[sizeof(m_name) - 1] = '\x00';
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// Open a reference to the object we hold.
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m_object->Open();
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}
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bool KObjectName::MatchesName(const char* name) const {
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return std::strncmp(m_name.data(), name, sizeof(m_name)) == 0;
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}
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Result KObjectName::NewFromName(KernelCore& kernel, KAutoObject* obj, const char* name) {
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// Create a new object name.
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KObjectName* new_name = KObjectName::Allocate(kernel);
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R_UNLESS(new_name != nullptr, ResultOutOfResource);
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// Initialize the new name.
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new_name->Initialize(obj, name);
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// Check if there's an existing name.
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{
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// Get the global data.
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KObjectNameGlobalData& gd{kernel.ObjectNameGlobalData()};
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// Ensure we have exclusive access to the global list.
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KScopedLightLock lk{gd.GetObjectListLock()};
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// If the object doesn't exist, put it into the list.
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KScopedAutoObject existing_object = FindImpl(kernel, name);
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if (existing_object.IsNull()) {
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gd.GetObjectList().push_back(*new_name);
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R_SUCCEED();
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}
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}
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// The object already exists, which is an error condition. Perform cleanup.
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obj->Close();
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KObjectName::Free(kernel, new_name);
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R_THROW(ResultInvalidState);
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}
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Result KObjectName::Delete(KernelCore& kernel, KAutoObject* obj, const char* compare_name) {
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// Get the global data.
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KObjectNameGlobalData& gd{kernel.ObjectNameGlobalData()};
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// Ensure we have exclusive access to the global list.
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KScopedLightLock lk{gd.GetObjectListLock()};
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// Find a matching entry in the list, and delete it.
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for (auto& name : gd.GetObjectList()) {
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if (name.MatchesName(compare_name) && obj == name.GetObject()) {
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// We found a match, clean up its resources.
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obj->Close();
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gd.GetObjectList().erase(gd.GetObjectList().iterator_to(name));
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KObjectName::Free(kernel, std::addressof(name));
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R_SUCCEED();
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}
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}
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// We didn't find the object in the list.
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R_THROW(ResultNotFound);
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}
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KScopedAutoObject<KAutoObject> KObjectName::Find(KernelCore& kernel, const char* name) {
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// Get the global data.
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KObjectNameGlobalData& gd{kernel.ObjectNameGlobalData()};
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// Ensure we have exclusive access to the global list.
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KScopedLightLock lk{gd.GetObjectListLock()};
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return FindImpl(kernel, name);
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}
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KScopedAutoObject<KAutoObject> KObjectName::FindImpl(KernelCore& kernel, const char* compare_name) {
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// Get the global data.
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KObjectNameGlobalData& gd{kernel.ObjectNameGlobalData()};
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// Try to find a matching object in the global list.
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for (const auto& name : gd.GetObjectList()) {
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if (name.MatchesName(compare_name)) {
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return name.GetObject();
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}
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}
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// There's no matching entry in the list.
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return nullptr;
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}
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} // namespace Kernel
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