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Atmosphere/libraries/libstratosphere/source/lm/lm_api.cpp

121 lines
4.7 KiB
C++

/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stratosphere.hpp>
#include "lm_remote_log_service.hpp"
#include "impl/lm_log_packet_header.hpp"
#include "impl/lm_log_packet_transmitter.hpp"
namespace ams::diag::impl {
void ReplaceDefaultLogObserver(LogObserver observer);
void ResetDefaultLogObserver();
void GetProcessNamePointer(const char **out, size_t *out_len);
}
namespace ams::lm {
namespace {
constinit sf::SharedPointer<ILogger> g_logger = nullptr;
constexpr inline size_t TransmissionBufferSize = 1_KB;
constexpr inline size_t TransmissionBufferAlign = alignof(impl::LogPacketHeader);
constinit os::SdkMutex g_transmission_buffer_mutex;
alignas(TransmissionBufferAlign) constinit char g_transmission_buffer[TransmissionBufferSize];
using PushTextFunction = void (impl::LogPacketTransmitter::*)(const char *, size_t);
bool LogPacketTransmitterFlushFunction(const u8 *data, size_t size) {
const Result result = g_logger->Log(sf::InAutoSelectBuffer(data, size));
R_ABORT_UNLESS(result);
return R_SUCCEEDED(result);
}
void InvokePushTextWithUtf8Sanitizing(impl::LogPacketTransmitter &transmitter, PushTextFunction push_func, const char *str) {
/* Get the string length. */
const auto len = std::strlen(str);
if (len == 0 || util::VerifyUtf8String(str, len)) {
(transmitter.*push_func)(str, len);
} else {
(transmitter.*push_func)("(Invalid UTF8 string)", sizeof("(Invalid UTF8 string)") - 1);
}
}
void LogManagerLogObserver(const diag::LogMetaData &meta, const diag::LogBody &body, void *) {
/* Check pre-conditions. */
AMS_ASSERT(!meta.use_default_locale_charset);
/* Acquire access to the transmission buffer. */
std::scoped_lock lk(g_transmission_buffer_mutex);
/* Create transmitter. */
impl::LogPacketTransmitter transmitter(g_transmission_buffer, TransmissionBufferSize, LogPacketTransmitterFlushFunction, static_cast<u8>(meta.severity), static_cast<u8>(meta.verbosity), 0, body.is_head, body.is_tail);
/* Push head-only logs. */
if (body.is_head) {
transmitter.PushUserSystemClock(os::GetSystemTick().ToTimeSpan().GetSeconds());
transmitter.PushLineNumber(meta.source_info.line_number);
InvokePushTextWithUtf8Sanitizing(transmitter, &impl::LogPacketTransmitter::PushFileName, meta.source_info.file_name);
InvokePushTextWithUtf8Sanitizing(transmitter, &impl::LogPacketTransmitter::PushFunctionName, meta.source_info.function_name);
InvokePushTextWithUtf8Sanitizing(transmitter, &impl::LogPacketTransmitter::PushModuleName, meta.module_name);
InvokePushTextWithUtf8Sanitizing(transmitter, &impl::LogPacketTransmitter::PushThreadName, os::GetThreadNamePointer(os::GetCurrentThread()));
const char *process_name;
size_t process_name_len;
diag::impl::GetProcessNamePointer(std::addressof(process_name), std::addressof(process_name_len));
transmitter.PushProcessName(process_name, process_name_len);
}
/* Push the actual log. */
transmitter.PushTextLog(body.message, body.message_size);
}
}
void Initialize() {
AMS_ABORT_UNLESS(g_logger == nullptr);
/* Create the logger. */
{
auto service = CreateLogService();
R_ABORT_UNLESS(service->OpenLogger(std::addressof(g_logger), sf::ClientProcessId{}));
}
/* Replace the default log observer. */
diag::impl::ReplaceDefaultLogObserver(LogManagerLogObserver);
}
void Finalize() {
AMS_ABORT_UNLESS(g_logger != nullptr);
/* Reset the default log observer. */
diag::impl::ResetDefaultLogObserver();
/* Destroy the logger. */
g_logger = nullptr;
}
void SetDestination(u32 destination) {
g_logger->SetDestination(destination);
}
}