64 lines · cpp
1//===-- OsLogger.cpp --------------------------------------------*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "OsLogger.h"10#include <Availability.h>11 12#if (LLDB_USE_OS_LOG) && (__MAC_OS_X_VERSION_MAX_ALLOWED >= 101200)13 14#include <os/log.h>15 16#include "DNBDefs.h"17#include "DNBLog.h"18 19#define LLDB_OS_LOG_MAX_BUFFER_LENGTH 25620 21namespace {22// Darwin os_log logging callback that can be registered with23// DNBLogSetLogCallback24void DarwinLogCallback(void *baton, uint32_t flags, const char *format,25 va_list args) {26 if (format == nullptr)27 return;28 29 static os_log_t g_logger;30 if (!g_logger) {31 g_logger = os_log_create("com.apple.dt.lldb", "debugserver");32 if (!g_logger)33 return;34 }35 36 os_log_type_t log_type;37 if (flags & DNBLOG_FLAG_FATAL)38 log_type = OS_LOG_TYPE_FAULT;39 else if (flags & DNBLOG_FLAG_ERROR)40 log_type = OS_LOG_TYPE_ERROR;41 else if (flags & DNBLOG_FLAG_WARNING)42 log_type = OS_LOG_TYPE_DEFAULT;43 else if (flags & DNBLOG_FLAG_VERBOSE)44 log_type = OS_LOG_TYPE_DEBUG;45 else46 log_type = OS_LOG_TYPE_DEFAULT;47 48 // This code is unfortunate. os_log* only takes static strings, but49 // our current log API isn't set up to make use of that style.50 char buffer[LLDB_OS_LOG_MAX_BUFFER_LENGTH];51 vsnprintf(buffer, sizeof(buffer), format, args);52 os_log_with_type(g_logger, log_type, "%{public}s", buffer);53}54}55 56DNBCallbackLog OsLogger::GetLogFunction() { return DarwinLogCallback; }57 58#else59 60DNBCallbackLog OsLogger::GetLogFunction() { return nullptr; }61 62#endif63 64