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//===-- LogChannelSwift.cpp -----------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "LogChannelSwift.h"
#include "lldb/Host/Host.h"
#include "lldb/Utility/Log.h"
#include "lldb/Version/Version.h"
using namespace lldb_private;
static constexpr Log::Category g_categories[] = {
{{"health"},
{"log all messages related to lldb Swift operational health"},
SwiftLog::Health},
};
static Log::Channel g_channel(g_categories, SwiftLog::Health);
static std::string g_swift_log_buffer;
template <> Log::Channel &lldb_private::LogChannelFor<SwiftLog>() {
return g_channel;
}
class StringLogHandler : public LogHandler {
public:
StringLogHandler(std::string& str) : m_string(str) {}
void Emit(llvm::StringRef message) override {
std::lock_guard<std::mutex> guard(m_mutex);
m_string += std::string(message);
}
bool isA(const void *ClassID) const override { return ClassID == &ID; }
static bool classof(const LogHandler *obj) { return obj->isA(&ID); }
private:
std::mutex m_mutex;
std::string& m_string;
static char ID;
};
char StringLogHandler::ID;
void LogChannelSwift::Initialize() {
Log::Register("swift", g_channel);
auto string_log_handler_sp =
std::make_shared<StringLogHandler>(g_swift_log_buffer);
auto system_log_handler_sp = std::make_shared<SystemLogHandler>();
auto log_handler_sp = std::make_shared<TeeLogHandler>(string_log_handler_sp,
system_log_handler_sp);
Log::EnableLogChannel(log_handler_sp, 0, "swift", {"health"}, llvm::nulls());
if (Log *log = GetSwiftHealthLog())
log->Printf(
"==== LLDB swift-healthcheck log. ===\n"
"This file contains the configuration of LLDB's embedded Swift "
"compiler to help diagnosing module import and search path issues. "
"The swift-healthcheck command is meant to be run *after* an error "
"has occurred.\n%s",
lldb_private::GetVersion());
}
void LogChannelSwift::Terminate() { Log::Unregister("swift"); }
Log *lldb_private::GetSwiftHealthLog() { return GetLog(SwiftLog::Health); }
llvm::StringRef lldb_private::GetSwiftHealthLogData() {
return g_swift_log_buffer;
}
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