mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-09-21 16:28:58 -04:00
252 lines
8.1 KiB
C++
252 lines
8.1 KiB
C++
/*
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* Copyright (c) 2018-2020 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 <stratosphere.hpp>
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#include "socket_api.hpp"
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#include "socket_allocator.hpp"
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extern "C" {
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#include <switch/services/bsd.h>
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}
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namespace ams::socket::impl {
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namespace {
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constinit bool g_initialized = false;
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constinit os::SdkMutex g_heap_mutex;
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constinit lmem::HeapHandle g_heap_handle = nullptr;
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constinit int g_heap_generation = -1;
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ALWAYS_INLINE bool IsInitialized() {
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return g_initialized;
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}
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}
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void *Alloc(size_t size) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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void *ptr = nullptr;
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if ((ptr = lmem::AllocateFromExpHeap(g_heap_handle, size)) == nullptr) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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}
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return ptr;
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}
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void *Calloc(size_t num, size_t size) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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void *ptr = nullptr;
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if ((ptr = lmem::AllocateFromExpHeap(g_heap_handle, size * num)) == nullptr) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else {
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std::memset(ptr, 0, size * num);
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}
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return ptr;
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}
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void Free(void *ptr) {
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std::scoped_lock lk(g_heap_mutex);
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AMS_ASSERT(g_heap_generation > 0);
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if (!g_heap_handle) {
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socket::impl::SetLastError(Errno::EOpNotSupp);
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} else if (ptr != nullptr) {
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lmem::FreeToExpHeap(g_heap_handle, ptr);
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}
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}
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bool HeapIsAvailable(int generation) {
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std::scoped_lock lk(g_heap_mutex);
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return g_heap_handle && g_heap_generation == generation;
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}
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int GetHeapGeneration() {
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std::scoped_lock lk(g_heap_mutex);
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return g_heap_generation;
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}
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Errno GetLastError() {
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if (AMS_LIKELY(IsInitialized())) {
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return static_cast<Errno>(errno);
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} else {
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return Errno::EInval;
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}
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}
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void SetLastError(Errno err) {
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if (AMS_LIKELY(IsInitialized())) {
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errno = static_cast<int>(err);
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}
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}
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u32 InetHtonl(u32 host) {
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if constexpr (util::IsBigEndian()) {
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return host;
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} else {
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return util::SwapBytes(host);
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}
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}
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u16 InetHtons(u16 host) {
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if constexpr (util::IsBigEndian()) {
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return host;
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} else {
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return util::SwapBytes(host);
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}
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}
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u32 InetNtohl(u32 net) {
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if constexpr (util::IsBigEndian()) {
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return net;
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} else {
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return util::SwapBytes(net);
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}
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}
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u16 InetNtohs(u16 net) {
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if constexpr (util::IsBigEndian()) {
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return net;
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} else {
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return util::SwapBytes(net);
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}
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}
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namespace {
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void InitializeHeapImpl(void *buffer, size_t size) {
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/* NOTE: Nintendo uses both CreateOption_ThreadSafe *and* a global heap mutex. */
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/* This is unnecessary, and using a single SdkMutex is more performant, since we're not recursive. */
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std::scoped_lock lk(g_heap_mutex);
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g_heap_handle = lmem::CreateExpHeap(buffer, size, lmem::CreateOption_None);
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}
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Result InitializeCommon(const Config &config) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(!IsInitialized());
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AMS_ABORT_UNLESS(config.GetMemoryPool() != nullptr);
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AMS_ABORT_UNLESS(1 <= config.GetConcurrencyCountMax() && config.GetConcurrencyCountMax() <= ConcurrencyLimitMax);
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if (!config.IsSmbpClient()) { AMS_ABORT_UNLESS(config.GetAllocatorPoolSize() < config.GetMemoryPoolSize()); }
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AMS_ABORT_UNLESS(util::IsAligned(config.GetMemoryPoolSize(), os::MemoryPageSize));
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AMS_ABORT_UNLESS(util::IsAligned(config.GetAllocatorPoolSize(), os::MemoryPageSize));
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AMS_ABORT_UNLESS(config.GetAllocatorPoolSize() >= 4_KB);
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if (!config.IsSystemClient()) {
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R_UNLESS(config.GetMemoryPoolSize() >= socket::MinSocketMemoryPoolSize, socket::ResultInsufficientProvidedMemory());
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}
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const size_t transfer_memory_size = config.GetMemoryPoolSize() - config.GetAllocatorPoolSize();
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if (!config.IsSmbpClient()) {
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R_UNLESS(transfer_memory_size >= socket::MinMemHeapAllocatorSize, socket::ResultInsufficientProvidedMemory());
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} else {
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R_UNLESS(config.GetMemoryPoolSize() >= socket::MinimumSharedMbufPoolReservation, socket::ResultInsufficientProvidedMemory());
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}
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/* Initialize the allocator heap. */
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InitializeHeapImpl(static_cast<u8 *>(config.GetMemoryPool()) + transfer_memory_size, config.GetAllocatorPoolSize());
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/* Initialize libnx. */
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{
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const ::BsdInitConfig libnx_config = {
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.version = config.GetVersion(),
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.tmem_buffer = config.GetMemoryPool(),
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.tmem_buffer_size = transfer_memory_size,
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.tcp_tx_buf_size = static_cast<u32>(config.GetTcpInitialSendBufferSize()),
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.tcp_rx_buf_size = static_cast<u32>(config.GetTcpInitialReceiveBufferSize()),
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.tcp_tx_buf_max_size = static_cast<u32>(config.GetTcpAutoSendBufferSizeMax()),
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.tcp_rx_buf_max_size = static_cast<u32>(config.GetTcpAutoReceiveBufferSizeMax()),
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.udp_tx_buf_size = static_cast<u32>(config.GetUdpSendBufferSize()),
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.udp_rx_buf_size = static_cast<u32>(config.GetUdpReceiveBufferSize()),
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.sb_efficiency = static_cast<u32>(config.GetSocketBufferEfficiency()),
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};
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const auto service_type = config.IsSystemClient() ? (1 << 1) : (1 << 0);
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sm::DoWithSession([&] {
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R_ABORT_UNLESS(::bsdInitialize(std::addressof(libnx_config), static_cast<u32>(config.GetConcurrencyCountMax()), service_type));
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});
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}
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/* Set the heap generation. */
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g_heap_generation = (g_heap_generation + 1) % MinimumHeapAlignment;
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/* TODO: socket::resolver::EnableResolverCalls()? Not necessary in our case (htc), but consider calling it. */
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return ResultSuccess();
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}
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}
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Result Initialize(const Config &config) {
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return InitializeCommon(config);
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}
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Result Finalize() {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(IsInitialized());
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/* TODO: If we support statistics, kill the statistics thread. */
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/* TODO: socket::resolver::DisableResolverCalls()? */
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/* Finalize libnx. */
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::bsdExit();
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/* Finalize the heap. */
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lmem::HeapHandle heap_handle;
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{
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std::scoped_lock lk(g_heap_mutex);
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heap_handle = g_heap_handle;
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g_heap_handle = nullptr;
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}
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lmem::DestroyExpHeap(heap_handle);
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return ResultSuccess();
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}
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Result InitializeAllocatorForInternal(void *buffer, size_t size) {
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/* Check pre-conditions. */
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AMS_ABORT_UNLESS(util::IsAligned(size, os::MemoryPageSize));
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AMS_ABORT_UNLESS(size >= 4_KB);
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InitializeHeapImpl(buffer, size);
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return ResultSuccess();
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}
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}
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