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https://github.com/Atmosphere-NX/Atmosphere-libs.git
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67 lines
2.6 KiB
C++
67 lines
2.6 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <mesosphere.hpp>
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namespace ams::kern {
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Result KSessionRequest::SessionMappings::PushMap(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state, size_t index) {
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/* At most 15 buffers of each type (4-bit descriptor counts). */
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MESOSPHERE_ASSERT(index < NumMappings);
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/* Get the mapping. */
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Mapping *mapping;
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if (index < NumStaticMappings) {
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mapping = std::addressof(m_static_mappings[index]);
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} else {
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/* Allocate dynamic mappings as necessary. */
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if (m_dynamic_mappings == nullptr) {
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m_dynamic_mappings = DynamicMappings::Allocate();
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R_UNLESS(m_dynamic_mappings != nullptr, svc::ResultOutOfMemory());
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}
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mapping = std::addressof(m_dynamic_mappings->Get(index - NumStaticMappings));
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}
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/* Set the mapping. */
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mapping->Set(client, server, size, state);
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R_SUCCEED();
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}
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Result KSessionRequest::SessionMappings::PushSend(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
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MESOSPHERE_ASSERT(m_num_recv == 0);
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MESOSPHERE_ASSERT(m_num_exch == 0);
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R_RETURN(this->PushMap(client, server, size, state, m_num_send++));
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}
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Result KSessionRequest::SessionMappings::PushReceive(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
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MESOSPHERE_ASSERT(m_num_exch == 0);
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R_RETURN(this->PushMap(client, server, size, state, m_num_send + m_num_recv++));
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}
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Result KSessionRequest::SessionMappings::PushExchange(KProcessAddress client, KProcessAddress server, size_t size, KMemoryState state) {
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R_RETURN(this->PushMap(client, server, size, state, m_num_send + m_num_recv + m_num_exch++));
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}
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void KSessionRequest::SessionMappings::Finalize() {
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if (m_dynamic_mappings) {
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DynamicMappings::Free(m_dynamic_mappings);
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m_dynamic_mappings = nullptr;
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}
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}
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}
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