2d704f4bf2
Partly, there's just a lot of unnecessary boiler plate. It's also possible to define combinations of arguments that make no sense (e.g. eArgRepeatPlus followed by eArgRepeatPlain...) but these are never checked since we just push_back directly into the argument definitions. This commit is step 1 of this cleanup - do the obvious stuff. In it, all the simple homogenous argument lists and the breakpoint/watchpoint ID/Range types, are set with common functions. This is an NFC change, it just centralizes boiler plate. There's no checking yet because you can't get a single argument wrong. The end goal is that all argument definition goes through functions and m_arguments is hidden so that you can't define inconsistent argument sets.
602 lines
20 KiB
C++
602 lines
20 KiB
C++
//===-- CommandObjectLog.cpp ----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "CommandObjectLog.h"
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#include "lldb/Core/Debugger.h"
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#include "lldb/Host/OptionParser.h"
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#include "lldb/Interpreter/CommandOptionArgumentTable.h"
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#include "lldb/Interpreter/CommandReturnObject.h"
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#include "lldb/Interpreter/OptionArgParser.h"
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#include "lldb/Interpreter/OptionValueEnumeration.h"
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#include "lldb/Interpreter/OptionValueUInt64.h"
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#include "lldb/Interpreter/Options.h"
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#include "lldb/Utility/Args.h"
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#include "lldb/Utility/FileSpec.h"
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#include "lldb/Utility/Log.h"
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#include "lldb/Utility/Stream.h"
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#include "lldb/Utility/Timer.h"
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using namespace lldb;
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using namespace lldb_private;
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#define LLDB_OPTIONS_log_enable
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#include "CommandOptions.inc"
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#define LLDB_OPTIONS_log_dump
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#include "CommandOptions.inc"
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/// Common completion logic for log enable/disable.
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static void CompleteEnableDisable(CompletionRequest &request) {
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size_t arg_index = request.GetCursorIndex();
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if (arg_index == 0) { // We got: log enable/disable x[tab]
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for (llvm::StringRef channel : Log::ListChannels())
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request.TryCompleteCurrentArg(channel);
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} else if (arg_index >= 1) { // We got: log enable/disable channel x[tab]
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llvm::StringRef channel = request.GetParsedLine().GetArgumentAtIndex(0);
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Log::ForEachChannelCategory(
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channel, [&request](llvm::StringRef name, llvm::StringRef desc) {
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request.TryCompleteCurrentArg(name, desc);
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});
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}
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}
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class CommandObjectLogEnable : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogEnable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log enable",
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"Enable logging for a single log channel.",
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nullptr) {
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CommandArgumentEntry arg1;
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CommandArgumentEntry arg2;
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CommandArgumentData channel_arg;
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CommandArgumentData category_arg;
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// Define the first (and only) variant of this arg.
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channel_arg.arg_type = eArgTypeLogChannel;
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channel_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the
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// argument entry.
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arg1.push_back(channel_arg);
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category_arg.arg_type = eArgTypeLogCategory;
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category_arg.arg_repetition = eArgRepeatPlus;
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arg2.push_back(category_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back(arg1);
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m_arguments.push_back(arg2);
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}
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~CommandObjectLogEnable() override = default;
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Options *GetOptions() override { return &m_options; }
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class CommandOptions : public Options {
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public:
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CommandOptions() = default;
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~CommandOptions() override = default;
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override {
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Status error;
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const int short_option = m_getopt_table[option_idx].val;
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switch (short_option) {
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case 'f':
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log_file.SetFile(option_arg, FileSpec::Style::native);
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FileSystem::Instance().Resolve(log_file);
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break;
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case 'h':
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handler = (LogHandlerKind)OptionArgParser::ToOptionEnum(
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option_arg, GetDefinitions()[option_idx].enum_values, 0, error);
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if (!error.Success())
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error.SetErrorStringWithFormat(
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"unrecognized value for log handler '%s'",
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option_arg.str().c_str());
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break;
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case 'b':
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error =
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buffer_size.SetValueFromString(option_arg, eVarSetOperationAssign);
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break;
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case 'v':
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log_options |= LLDB_LOG_OPTION_VERBOSE;
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break;
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case 's':
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log_options |= LLDB_LOG_OPTION_PREPEND_SEQUENCE;
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break;
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case 'T':
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log_options |= LLDB_LOG_OPTION_PREPEND_TIMESTAMP;
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break;
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case 'p':
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log_options |= LLDB_LOG_OPTION_PREPEND_PROC_AND_THREAD;
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break;
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case 'n':
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log_options |= LLDB_LOG_OPTION_PREPEND_THREAD_NAME;
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break;
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case 'S':
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log_options |= LLDB_LOG_OPTION_BACKTRACE;
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break;
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case 'a':
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log_options |= LLDB_LOG_OPTION_APPEND;
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break;
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case 'F':
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log_options |= LLDB_LOG_OPTION_PREPEND_FILE_FUNCTION;
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break;
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default:
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llvm_unreachable("Unimplemented option");
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}
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return error;
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}
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void OptionParsingStarting(ExecutionContext *execution_context) override {
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log_file.Clear();
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buffer_size.Clear();
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handler = eLogHandlerStream;
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log_options = 0;
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}
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
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return llvm::ArrayRef(g_log_enable_options);
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}
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FileSpec log_file;
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OptionValueUInt64 buffer_size;
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LogHandlerKind handler = eLogHandlerStream;
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uint32_t log_options = 0;
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};
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void
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HandleArgumentCompletion(CompletionRequest &request,
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OptionElementVector &opt_element_vector) override {
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CompleteEnableDisable(request);
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}
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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if (args.GetArgumentCount() < 2) {
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result.AppendErrorWithFormat(
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"%s takes a log channel and one or more log types.\n",
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m_cmd_name.c_str());
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return;
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}
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if (m_options.handler == eLogHandlerCircular &&
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m_options.buffer_size.GetCurrentValue() == 0) {
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result.AppendError(
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"the circular buffer handler requires a non-zero buffer size.\n");
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return;
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}
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if ((m_options.handler != eLogHandlerCircular &&
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m_options.handler != eLogHandlerStream) &&
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m_options.buffer_size.GetCurrentValue() != 0) {
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result.AppendError("a buffer size can only be specified for the circular "
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"and stream buffer handler.\n");
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return;
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}
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if (m_options.handler != eLogHandlerStream && m_options.log_file) {
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result.AppendError(
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"a file name can only be specified for the stream handler.\n");
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return;
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}
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// Store into a std::string since we're about to shift the channel off.
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const std::string channel = std::string(args[0].ref());
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args.Shift(); // Shift off the channel
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char log_file[PATH_MAX];
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if (m_options.log_file)
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m_options.log_file.GetPath(log_file, sizeof(log_file));
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else
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log_file[0] = '\0';
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std::string error;
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llvm::raw_string_ostream error_stream(error);
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bool success = GetDebugger().EnableLog(
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channel, args.GetArgumentArrayRef(), log_file, m_options.log_options,
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m_options.buffer_size.GetCurrentValue(), m_options.handler,
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error_stream);
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result.GetErrorStream() << error_stream.str();
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if (success)
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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else
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result.SetStatus(eReturnStatusFailed);
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}
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CommandOptions m_options;
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};
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class CommandObjectLogDisable : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogDisable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log disable",
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"Disable one or more log channel categories.",
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nullptr) {
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CommandArgumentEntry arg1;
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CommandArgumentEntry arg2;
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CommandArgumentData channel_arg;
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CommandArgumentData category_arg;
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// Define the first (and only) variant of this arg.
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channel_arg.arg_type = eArgTypeLogChannel;
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channel_arg.arg_repetition = eArgRepeatPlain;
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// There is only one variant this argument could be; put it into the
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// argument entry.
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arg1.push_back(channel_arg);
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category_arg.arg_type = eArgTypeLogCategory;
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category_arg.arg_repetition = eArgRepeatPlus;
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arg2.push_back(category_arg);
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// Push the data for the first argument into the m_arguments vector.
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m_arguments.push_back(arg1);
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m_arguments.push_back(arg2);
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}
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~CommandObjectLogDisable() override = default;
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void
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HandleArgumentCompletion(CompletionRequest &request,
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OptionElementVector &opt_element_vector) override {
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CompleteEnableDisable(request);
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}
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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if (args.empty()) {
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result.AppendErrorWithFormat(
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"%s takes a log channel and one or more log types.\n",
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m_cmd_name.c_str());
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return;
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}
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const std::string channel = std::string(args[0].ref());
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args.Shift(); // Shift off the channel
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if (channel == "all") {
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Log::DisableAllLogChannels();
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else {
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std::string error;
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llvm::raw_string_ostream error_stream(error);
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if (Log::DisableLogChannel(channel, args.GetArgumentArrayRef(),
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error_stream))
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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result.GetErrorStream() << error_stream.str();
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}
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}
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};
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class CommandObjectLogList : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogList(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log list",
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"List the log categories for one or more log "
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"channels. If none specified, lists them all.",
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nullptr) {
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AddSimpleArgumentList(eArgTypeLogChannel, eArgRepeatStar);
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}
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~CommandObjectLogList() override = default;
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void
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HandleArgumentCompletion(CompletionRequest &request,
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OptionElementVector &opt_element_vector) override {
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for (llvm::StringRef channel : Log::ListChannels())
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request.TryCompleteCurrentArg(channel);
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}
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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std::string output;
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llvm::raw_string_ostream output_stream(output);
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if (args.empty()) {
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Log::ListAllLogChannels(output_stream);
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result.SetStatus(eReturnStatusSuccessFinishResult);
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} else {
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bool success = true;
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for (const auto &entry : args.entries())
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success =
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success && Log::ListChannelCategories(entry.ref(), output_stream);
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if (success)
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result.SetStatus(eReturnStatusSuccessFinishResult);
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}
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result.GetOutputStream() << output_stream.str();
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}
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};
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class CommandObjectLogDump : public CommandObjectParsed {
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public:
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CommandObjectLogDump(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log dump",
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"dump circular buffer logs", nullptr) {
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AddSimpleArgumentList(eArgTypeLogChannel);
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}
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~CommandObjectLogDump() override = default;
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Options *GetOptions() override { return &m_options; }
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class CommandOptions : public Options {
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public:
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CommandOptions() = default;
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~CommandOptions() override = default;
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Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
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ExecutionContext *execution_context) override {
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Status error;
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const int short_option = m_getopt_table[option_idx].val;
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switch (short_option) {
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case 'f':
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log_file.SetFile(option_arg, FileSpec::Style::native);
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FileSystem::Instance().Resolve(log_file);
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break;
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default:
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llvm_unreachable("Unimplemented option");
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}
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return error;
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}
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void OptionParsingStarting(ExecutionContext *execution_context) override {
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log_file.Clear();
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}
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llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
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return llvm::ArrayRef(g_log_dump_options);
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}
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FileSpec log_file;
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};
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void
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HandleArgumentCompletion(CompletionRequest &request,
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OptionElementVector &opt_element_vector) override {
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CompleteEnableDisable(request);
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}
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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if (args.empty()) {
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result.AppendErrorWithFormat(
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"%s takes a log channel and one or more log types.\n",
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m_cmd_name.c_str());
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return;
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}
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std::unique_ptr<llvm::raw_ostream> stream_up;
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if (m_options.log_file) {
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const File::OpenOptions flags = File::eOpenOptionWriteOnly |
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File::eOpenOptionCanCreate |
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File::eOpenOptionTruncate;
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llvm::Expected<FileUP> file = FileSystem::Instance().Open(
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m_options.log_file, flags, lldb::eFilePermissionsFileDefault, false);
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if (!file) {
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result.AppendErrorWithFormat("Unable to open log file '%s': %s",
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m_options.log_file.GetPath().c_str(),
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llvm::toString(file.takeError()).c_str());
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return;
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}
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stream_up = std::make_unique<llvm::raw_fd_ostream>(
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(*file)->GetDescriptor(), /*shouldClose=*/true);
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} else {
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stream_up = std::make_unique<llvm::raw_fd_ostream>(
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GetDebugger().GetOutputFile().GetDescriptor(), /*shouldClose=*/false);
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}
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const std::string channel = std::string(args[0].ref());
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std::string error;
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llvm::raw_string_ostream error_stream(error);
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if (Log::DumpLogChannel(channel, *stream_up, error_stream)) {
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else {
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result.SetStatus(eReturnStatusFailed);
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result.GetErrorStream() << error_stream.str();
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}
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}
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CommandOptions m_options;
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};
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class CommandObjectLogTimerEnable : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogTimerEnable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log timers enable",
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"enable LLDB internal performance timers",
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"log timers enable <depth>") {
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AddSimpleArgumentList(eArgTypeCount, eArgRepeatOptional);
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}
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~CommandObjectLogTimerEnable() override = default;
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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result.SetStatus(eReturnStatusFailed);
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if (args.GetArgumentCount() == 0) {
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Timer::SetDisplayDepth(UINT32_MAX);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else if (args.GetArgumentCount() == 1) {
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uint32_t depth;
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if (args[0].ref().consumeInteger(0, depth)) {
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result.AppendError(
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"Could not convert enable depth to an unsigned integer.");
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} else {
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Timer::SetDisplayDepth(depth);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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}
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}
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if (!result.Succeeded()) {
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result.AppendError("Missing subcommand");
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result.AppendErrorWithFormat("Usage: %s\n", m_cmd_syntax.c_str());
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}
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}
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};
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class CommandObjectLogTimerDisable : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogTimerDisable(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log timers disable",
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"disable LLDB internal performance timers",
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nullptr) {}
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~CommandObjectLogTimerDisable() override = default;
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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Timer::DumpCategoryTimes(result.GetOutputStream());
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Timer::SetDisplayDepth(0);
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result.SetStatus(eReturnStatusSuccessFinishResult);
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if (!result.Succeeded()) {
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result.AppendError("Missing subcommand");
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result.AppendErrorWithFormat("Usage: %s\n", m_cmd_syntax.c_str());
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}
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}
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};
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class CommandObjectLogTimerDump : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogTimerDump(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log timers dump",
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"dump LLDB internal performance timers", nullptr) {}
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~CommandObjectLogTimerDump() override = default;
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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Timer::DumpCategoryTimes(result.GetOutputStream());
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result.SetStatus(eReturnStatusSuccessFinishResult);
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if (!result.Succeeded()) {
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result.AppendError("Missing subcommand");
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result.AppendErrorWithFormat("Usage: %s\n", m_cmd_syntax.c_str());
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}
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}
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};
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class CommandObjectLogTimerReset : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogTimerReset(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log timers reset",
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"reset LLDB internal performance timers", nullptr) {
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}
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~CommandObjectLogTimerReset() override = default;
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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Timer::ResetCategoryTimes();
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result.SetStatus(eReturnStatusSuccessFinishResult);
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if (!result.Succeeded()) {
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result.AppendError("Missing subcommand");
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result.AppendErrorWithFormat("Usage: %s\n", m_cmd_syntax.c_str());
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}
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}
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};
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class CommandObjectLogTimerIncrement : public CommandObjectParsed {
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public:
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// Constructors and Destructors
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CommandObjectLogTimerIncrement(CommandInterpreter &interpreter)
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: CommandObjectParsed(interpreter, "log timers increment",
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"increment LLDB internal performance timers",
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"log timers increment <bool>") {
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AddSimpleArgumentList(eArgTypeBoolean);
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}
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~CommandObjectLogTimerIncrement() override = default;
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void
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HandleArgumentCompletion(CompletionRequest &request,
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OptionElementVector &opt_element_vector) override {
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request.TryCompleteCurrentArg("true");
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request.TryCompleteCurrentArg("false");
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}
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protected:
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void DoExecute(Args &args, CommandReturnObject &result) override {
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result.SetStatus(eReturnStatusFailed);
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if (args.GetArgumentCount() == 1) {
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bool success;
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bool increment =
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OptionArgParser::ToBoolean(args[0].ref(), false, &success);
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if (success) {
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Timer::SetQuiet(!increment);
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result.SetStatus(eReturnStatusSuccessFinishNoResult);
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} else
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result.AppendError("Could not convert increment value to boolean.");
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}
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if (!result.Succeeded()) {
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result.AppendError("Missing subcommand");
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result.AppendErrorWithFormat("Usage: %s\n", m_cmd_syntax.c_str());
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}
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}
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};
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class CommandObjectLogTimer : public CommandObjectMultiword {
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public:
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CommandObjectLogTimer(CommandInterpreter &interpreter)
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: CommandObjectMultiword(interpreter, "log timers",
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"Enable, disable, dump, and reset LLDB internal "
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"performance timers.",
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"log timers < enable <depth> | disable | dump | "
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"increment <bool> | reset >") {
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LoadSubCommand("enable", CommandObjectSP(
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new CommandObjectLogTimerEnable(interpreter)));
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LoadSubCommand("disable", CommandObjectSP(new CommandObjectLogTimerDisable(
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interpreter)));
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LoadSubCommand("dump",
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CommandObjectSP(new CommandObjectLogTimerDump(interpreter)));
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LoadSubCommand(
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"reset", CommandObjectSP(new CommandObjectLogTimerReset(interpreter)));
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LoadSubCommand(
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"increment",
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CommandObjectSP(new CommandObjectLogTimerIncrement(interpreter)));
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}
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~CommandObjectLogTimer() override = default;
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};
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CommandObjectLog::CommandObjectLog(CommandInterpreter &interpreter)
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: CommandObjectMultiword(interpreter, "log",
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"Commands controlling LLDB internal logging.",
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"log <subcommand> [<command-options>]") {
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LoadSubCommand("enable",
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CommandObjectSP(new CommandObjectLogEnable(interpreter)));
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LoadSubCommand("disable",
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CommandObjectSP(new CommandObjectLogDisable(interpreter)));
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LoadSubCommand("list",
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CommandObjectSP(new CommandObjectLogList(interpreter)));
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LoadSubCommand("dump",
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CommandObjectSP(new CommandObjectLogDump(interpreter)));
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LoadSubCommand("timers",
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CommandObjectSP(new CommandObjectLogTimer(interpreter)));
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}
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CommandObjectLog::~CommandObjectLog() = default;
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