73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
// Copyright 2015 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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#include "core/hle/kernel/errors.h"
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#include "core/hle/kernel/resource_limit.h"
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#include "core/hle/result.h"
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namespace Kernel {
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namespace {
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constexpr std::size_t ResourceTypeToIndex(ResourceType type) {
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return static_cast<std::size_t>(type);
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}
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} // Anonymous namespace
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ResourceLimit::ResourceLimit(KernelCore& kernel) : Object{kernel} {}
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ResourceLimit::~ResourceLimit() = default;
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bool ResourceLimit::Reserve(ResourceType resource, s64 amount) {
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return Reserve(resource, amount, 10000000000);
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}
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bool ResourceLimit::Reserve(ResourceType resource, s64 amount, u64 timeout) {
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const std::size_t index{ResourceTypeToIndex(resource)};
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s64 new_value = current[index] + amount;
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if (new_value > limit[index] && available[index] + amount <= limit[index]) {
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// TODO(bunnei): This is wrong for multicore, we should wait the calling thread for timeout
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new_value = current[index] + amount;
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}
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if (new_value <= limit[index]) {
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current[index] = new_value;
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return true;
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}
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return false;
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}
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void ResourceLimit::Release(ResourceType resource, u64 amount) {
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Release(resource, amount, amount);
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}
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void ResourceLimit::Release(ResourceType resource, u64 used_amount, u64 available_amount) {
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const std::size_t index{ResourceTypeToIndex(resource)};
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current[index] -= used_amount;
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available[index] -= available_amount;
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}
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std::shared_ptr<ResourceLimit> ResourceLimit::Create(KernelCore& kernel) {
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return std::make_shared<ResourceLimit>(kernel);
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}
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s64 ResourceLimit::GetCurrentResourceValue(ResourceType resource) const {
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return limit.at(ResourceTypeToIndex(resource)) - current.at(ResourceTypeToIndex(resource));
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}
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s64 ResourceLimit::GetMaxResourceValue(ResourceType resource) const {
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return limit.at(ResourceTypeToIndex(resource));
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}
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ResultCode ResourceLimit::SetLimitValue(ResourceType resource, s64 value) {
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const std::size_t index{ResourceTypeToIndex(resource)};
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if (current[index] <= value) {
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limit[index] = value;
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return RESULT_SUCCESS;
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} else {
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LOG_ERROR(Kernel, "Limit value is too large! resource={}, value={}, index={}",
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static_cast<u32>(resource), value, index);
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return ERR_INVALID_STATE;
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}
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}
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} // namespace Kernel
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