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MobileGL/MobileGL/MG_Util/Debug/Log.cpp
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// MobileGL - MobileGL/MG_Util/Debug/Log.cpp
// Copyright (c) 2025-2026 MobileGL-Dev
// Licensed under the GNU Lesser General Public License v3.0:
// https://www.gnu.org/licenses/gpl-3.0.txt
// https://www.gnu.org/licenses/lgpl-3.0.txt
// SPDX-License-Identifier: LGPL-3.0-only
// End of Source File Header
#include "../../Includes.h"
namespace MobileGL {
namespace MG_Util::Debug {
static FILE* s_logFile = nullptr;
std::mutex& LogMutex() {
static auto* mutex = new std::mutex();
return *mutex;
}
constexpr char* GetOSName() {
#if defined(_WIN32)
return (char*)"Windows";
#elif defined(__ANDROID__)
return (char*)"Android";
#elif defined(__APPLE__)
return (char*)"macOS";
#elif defined(__linux__)
return (char*)"Linux";
#else
return (char*)"UnknownOS";
#endif
}
std::string GetThreadName() {
char buffer[64] = {0};
#if defined(_WIN32) && !defined(__MINGW32__)
PWSTR desc = nullptr;
if (SUCCEEDED(GetThreadDescription(GetCurrentThread(), &desc))) {
WideCharToMultiByte(CP_UTF8, 0, desc, -1, buffer, sizeof(buffer), nullptr, nullptr);
LocalFree(desc);
}
#elif defined(__ANDROID__) || defined(__linux__) || defined(__APPLE__) || defined(__MINGW32__)
pthread_getname_np(pthread_self(), buffer, sizeof(buffer));
#endif
return buffer[0] ? buffer : "UnknownThread";
}
std::string GetCurrentTime() {
using namespace std::chrono;
auto now = system_clock::now();
std::time_t tt = system_clock::to_time_t(now);
struct tm tm{};
#if defined(_WIN32)
localtime_s(&tm, &tt);
#else
localtime_r(&tt, &tm);
#endif
char buf[16];
std::strftime(buf, sizeof(buf), "%H:%M:%S", &tm);
return buf;
}
void InitFile() {
#if MOBILEGL_LOG_ENABLE_FILE
if (!s_logFile) {
const char* logPath = std::getenv("MOBILEGL_LOG_FILE_PATH");
if (!logPath || !*logPath) {
logPath = MOBILEGL_LOG_FILE_PATH;
}
if (logPath && *logPath) {
s_logFile = std::fopen(logPath, "w");
}
}
#endif
}
void WriteToFile(const char* msg) {
#if MOBILEGL_LOG_ENABLE_FILE
if (!s_logFile) InitFile();
if (s_logFile) {
std::fputs(msg, s_logFile);
std::fflush(s_logFile);
}
#endif
}
void Log(const char* levelTag, android_LogPriority androidLogLevel, const char* fmt, ...) {
std::lock_guard<std::mutex> lock(LogMutex());
#if MOBILEGL_LOG_ENABLE_STACKTRACE
auto trace = std::stacktrace::current();
std::string padding(4 * trace.size(), ' ');
#endif
std::string header =
"[" + GetCurrentTime() + "] [" + GetOSName() + " " + GetThreadName() + "/" + levelTag + "]: ";
static char buffer[1024000];
va_list args;
va_start(args, fmt);
int n = std::vsnprintf(buffer, sizeof(buffer), fmt, args);
const SizeT messageLength =
(n < 0) ? 0 : std::min(static_cast<SizeT>(n), sizeof(buffer) - static_cast<SizeT>(1));
std::string out = header +
#if MOBILEGL_LOG_ENABLE_STACKTRACE
padding +
#endif
std::string(buffer, messageLength) + "\n";
#if MOBILEGL_LOG_ENABLE_CONSOLE
std::fwrite(out.c_str(), 1, out.size(), stdout);
fflush(stdout);
#endif
#if MOBILEGL_LOG_ENABLE_ANDROID && defined(__ANDROID__)
__android_log_print(androidLogLevel, "MobileGL", "%s", out.c_str());
#endif
WriteToFile(out.c_str());
va_end(args);
}
void Close() {
#if MOBILEGL_LOG_ENABLE_FILE
if (s_logFile) {
std::fclose(s_logFile);
s_logFile = nullptr;
}
#endif
}
} // namespace MG_Util::Debug
} // namespace MobileGL