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llvm-project/lldb/source/Commands/CommandObjectProcess.cpp
Jonas Devlieghere 8b3af63b89 [NFC] Remove ASCII lines from comments 
A lot of comments in LLDB are surrounded by an ASCII line to delimit the
begging and end of the comment.

Its use is not really consistent across the code base, sometimes the
lines are longer, sometimes they are shorter and sometimes they are
omitted. Furthermore, it looks kind of weird with the 80 column limit,
where the comment actually extends past the line, but not by much.
Furthermore, when /// is used for Doxygen comments, it looks
particularly odd. And when // is used, it incorrectly gives the
impression that it's actually a Doxygen comment.

I assume these lines were added to improve distinguishing between
comments and code. However, given that todays editors and IDEs do a
great job at highlighting comments, I think it's worth to drop this for
the sake of consistency. The alternative is fixing all the
inconsistencies, which would create a lot more churn.

Differential revision: https://reviews.llvm.org/D60508

llvm-svn: 358135
2019-04-10 20:48:55 +00:00

1609 lines
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//===-- CommandObjectProcess.cpp --------------------------------*- C++ -*-===//
//
// 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 "CommandObjectProcess.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Breakpoint/BreakpointSite.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/OptionParser.h"
#include "lldb/Host/StringConvert.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Interpreter/CommandReturnObject.h"
#include "lldb/Interpreter/OptionArgParser.h"
#include "lldb/Interpreter/Options.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/UnixSignals.h"
#include "lldb/Utility/Args.h"
#include "lldb/Utility/State.h"
using namespace lldb;
using namespace lldb_private;
class CommandObjectProcessLaunchOrAttach : public CommandObjectParsed {
public:
CommandObjectProcessLaunchOrAttach(CommandInterpreter &interpreter,
const char *name, const char *help,
const char *syntax, uint32_t flags,
const char *new_process_action)
: CommandObjectParsed(interpreter, name, help, syntax, flags),
m_new_process_action(new_process_action) {}
~CommandObjectProcessLaunchOrAttach() override = default;
protected:
bool StopProcessIfNecessary(Process *process, StateType &state,
CommandReturnObject &result) {
state = eStateInvalid;
if (process) {
state = process->GetState();
if (process->IsAlive() && state != eStateConnected) {
char message[1024];
if (process->GetState() == eStateAttaching)
::snprintf(message, sizeof(message),
"There is a pending attach, abort it and %s?",
m_new_process_action.c_str());
else if (process->GetShouldDetach())
::snprintf(message, sizeof(message),
"There is a running process, detach from it and %s?",
m_new_process_action.c_str());
else
::snprintf(message, sizeof(message),
"There is a running process, kill it and %s?",
m_new_process_action.c_str());
if (!m_interpreter.Confirm(message, true)) {
result.SetStatus(eReturnStatusFailed);
return false;
} else {
if (process->GetShouldDetach()) {
bool keep_stopped = false;
Status detach_error(process->Detach(keep_stopped));
if (detach_error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
process = nullptr;
} else {
result.AppendErrorWithFormat(
"Failed to detach from process: %s\n",
detach_error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
Status destroy_error(process->Destroy(false));
if (destroy_error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
process = nullptr;
} else {
result.AppendErrorWithFormat("Failed to kill process: %s\n",
destroy_error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
}
}
}
return result.Succeeded();
}
std::string m_new_process_action;
};
// CommandObjectProcessLaunch
#pragma mark CommandObjectProcessLaunch
class CommandObjectProcessLaunch : public CommandObjectProcessLaunchOrAttach {
public:
CommandObjectProcessLaunch(CommandInterpreter &interpreter)
: CommandObjectProcessLaunchOrAttach(
interpreter, "process launch",
"Launch the executable in the debugger.", nullptr,
eCommandRequiresTarget, "restart"),
m_options() {
CommandArgumentEntry arg;
CommandArgumentData run_args_arg;
// Define the first (and only) variant of this arg.
run_args_arg.arg_type = eArgTypeRunArgs;
run_args_arg.arg_repetition = eArgRepeatOptional;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(run_args_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectProcessLaunch() override = default;
int HandleArgumentCompletion(
CompletionRequest &request,
OptionElementVector &opt_element_vector) override {
CommandCompletions::InvokeCommonCompletionCallbacks(
GetCommandInterpreter(), CommandCompletions::eDiskFileCompletion,
request, nullptr);
return request.GetNumberOfMatches();
}
Options *GetOptions() override { return &m_options; }
const char *GetRepeatCommand(Args &current_command_args,
uint32_t index) override {
// No repeat for "process launch"...
return "";
}
protected:
bool DoExecute(Args &launch_args, CommandReturnObject &result) override {
Debugger &debugger = m_interpreter.GetDebugger();
Target *target = debugger.GetSelectedTarget().get();
// If our listener is nullptr, users aren't allows to launch
ModuleSP exe_module_sp = target->GetExecutableModule();
if (exe_module_sp == nullptr) {
result.AppendError("no file in target, create a debug target using the "
"'target create' command");
result.SetStatus(eReturnStatusFailed);
return false;
}
StateType state = eStateInvalid;
if (!StopProcessIfNecessary(m_exe_ctx.GetProcessPtr(), state, result))
return false;
llvm::StringRef target_settings_argv0 = target->GetArg0();
// Determine whether we will disable ASLR or leave it in the default state
// (i.e. enabled if the platform supports it). First check if the process
// launch options explicitly turn on/off
// disabling ASLR. If so, use that setting;
// otherwise, use the 'settings target.disable-aslr' setting.
bool disable_aslr = false;
if (m_options.disable_aslr != eLazyBoolCalculate) {
// The user specified an explicit setting on the process launch line.
// Use it.
disable_aslr = (m_options.disable_aslr == eLazyBoolYes);
} else {
// The user did not explicitly specify whether to disable ASLR. Fall
// back to the target.disable-aslr setting.
disable_aslr = target->GetDisableASLR();
}
if (disable_aslr)
m_options.launch_info.GetFlags().Set(eLaunchFlagDisableASLR);
else
m_options.launch_info.GetFlags().Clear(eLaunchFlagDisableASLR);
if (target->GetDetachOnError())
m_options.launch_info.GetFlags().Set(eLaunchFlagDetachOnError);
if (target->GetDisableSTDIO())
m_options.launch_info.GetFlags().Set(eLaunchFlagDisableSTDIO);
m_options.launch_info.GetEnvironment() = target->GetEnvironment();
if (!target_settings_argv0.empty()) {
m_options.launch_info.GetArguments().AppendArgument(
target_settings_argv0);
m_options.launch_info.SetExecutableFile(
exe_module_sp->GetPlatformFileSpec(), false);
} else {
m_options.launch_info.SetExecutableFile(
exe_module_sp->GetPlatformFileSpec(), true);
}
if (launch_args.GetArgumentCount() == 0) {
m_options.launch_info.GetArguments().AppendArguments(
target->GetProcessLaunchInfo().GetArguments());
} else {
m_options.launch_info.GetArguments().AppendArguments(launch_args);
// Save the arguments for subsequent runs in the current target.
target->SetRunArguments(launch_args);
}
StreamString stream;
Status error = target->Launch(m_options.launch_info, &stream);
if (error.Success()) {
ProcessSP process_sp(target->GetProcessSP());
if (process_sp) {
// There is a race condition where this thread will return up the call
// stack to the main command handler and show an (lldb) prompt before
// HandlePrivateEvent (from PrivateStateThread) has a chance to call
// PushProcessIOHandler().
process_sp->SyncIOHandler(0, std::chrono::seconds(2));
llvm::StringRef data = stream.GetString();
if (!data.empty())
result.AppendMessage(data);
const char *archname =
exe_module_sp->GetArchitecture().GetArchitectureName();
result.AppendMessageWithFormat(
"Process %" PRIu64 " launched: '%s' (%s)\n", process_sp->GetID(),
exe_module_sp->GetFileSpec().GetPath().c_str(), archname);
result.SetStatus(eReturnStatusSuccessFinishResult);
result.SetDidChangeProcessState(true);
} else {
result.AppendError(
"no error returned from Target::Launch, and target has no process");
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendError(error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
protected:
ProcessLaunchCommandOptions m_options;
};
//#define SET1 LLDB_OPT_SET_1
//#define SET2 LLDB_OPT_SET_2
//#define SET3 LLDB_OPT_SET_3
//
// OptionDefinition
// CommandObjectProcessLaunch::CommandOptions::g_option_table[] =
//{
// // clang-format off
// {SET1 | SET2 | SET3, false, "stop-at-entry", 's', OptionParser::eNoArgument,
// nullptr, 0, eArgTypeNone, "Stop at the entry point of the program
// when launching a process."},
// {SET1, false, "stdin", 'i',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stdin for the process to <path>."},
// {SET1, false, "stdout", 'o',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stdout for the process to <path>."},
// {SET1, false, "stderr", 'e',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName,
// "Redirect stderr for the process to <path>."},
// {SET1 | SET2 | SET3, false, "plugin", 'p',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypePlugin, "Name of
// the process plugin you want to use."},
// { SET2, false, "tty", 't',
// OptionParser::eOptionalArgument, nullptr, 0, eArgTypeDirectoryName, "Start
// the process in a terminal. If <path> is specified, look for a terminal whose
// name contains <path>, else start the process in a new terminal."},
// { SET3, false, "no-stdio", 'n', OptionParser::eNoArgument,
// nullptr, 0, eArgTypeNone, "Do not set up for terminal I/O to go to
// running process."},
// {SET1 | SET2 | SET3, false, "working-dir", 'w',
// OptionParser::eRequiredArgument, nullptr, 0, eArgTypeDirectoryName, "Set the
// current working directory to <path> when running the inferior."},
// {0, false, nullptr, 0, 0, nullptr, 0, eArgTypeNone, nullptr}
// // clang-format on
//};
//
//#undef SET1
//#undef SET2
//#undef SET3
// CommandObjectProcessAttach
static constexpr OptionDefinition g_process_attach_options[] = {
// clang-format off
{ LLDB_OPT_SET_ALL, false, "continue", 'c', OptionParser::eNoArgument, nullptr, {}, 0, eArgTypeNone, "Immediately continue the process once attached." },
{ LLDB_OPT_SET_ALL, false, "plugin", 'P', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePlugin, "Name of the process plugin you want to use." },
{ LLDB_OPT_SET_1, false, "pid", 'p', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePid, "The process ID of an existing process to attach to." },
{ LLDB_OPT_SET_2, false, "name", 'n', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeProcessName, "The name of the process to attach to." },
{ LLDB_OPT_SET_2, false, "include-existing", 'i', OptionParser::eNoArgument, nullptr, {}, 0, eArgTypeNone, "Include existing processes when doing attach -w." },
{ LLDB_OPT_SET_2, false, "waitfor", 'w', OptionParser::eNoArgument, nullptr, {}, 0, eArgTypeNone, "Wait for the process with <process-name> to launch." },
// clang-format on
};
#pragma mark CommandObjectProcessAttach
class CommandObjectProcessAttach : public CommandObjectProcessLaunchOrAttach {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'c':
attach_info.SetContinueOnceAttached(true);
break;
case 'p': {
lldb::pid_t pid;
if (option_arg.getAsInteger(0, pid)) {
error.SetErrorStringWithFormat("invalid process ID '%s'",
option_arg.str().c_str());
} else {
attach_info.SetProcessID(pid);
}
} break;
case 'P':
attach_info.SetProcessPluginName(option_arg);
break;
case 'n':
attach_info.GetExecutableFile().SetFile(option_arg,
FileSpec::Style::native);
break;
case 'w':
attach_info.SetWaitForLaunch(true);
break;
case 'i':
attach_info.SetIgnoreExisting(false);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
attach_info.Clear();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_attach_options);
}
bool HandleOptionArgumentCompletion(
CompletionRequest &request, OptionElementVector &opt_element_vector,
int opt_element_index, CommandInterpreter &interpreter) override {
int opt_arg_pos = opt_element_vector[opt_element_index].opt_arg_pos;
int opt_defs_index = opt_element_vector[opt_element_index].opt_defs_index;
// We are only completing the name option for now...
if (GetDefinitions()[opt_defs_index].short_option == 'n') {
// Are we in the name?
// Look to see if there is a -P argument provided, and if so use that
// plugin, otherwise use the default plugin.
const char *partial_name = nullptr;
partial_name = request.GetParsedLine().GetArgumentAtIndex(opt_arg_pos);
PlatformSP platform_sp(interpreter.GetPlatform(true));
if (platform_sp) {
ProcessInstanceInfoList process_infos;
ProcessInstanceInfoMatch match_info;
if (partial_name) {
match_info.GetProcessInfo().GetExecutableFile().SetFile(
partial_name, FileSpec::Style::native);
match_info.SetNameMatchType(NameMatch::StartsWith);
}
platform_sp->FindProcesses(match_info, process_infos);
const size_t num_matches = process_infos.GetSize();
if (num_matches > 0) {
for (size_t i = 0; i < num_matches; ++i) {
request.AddCompletion(llvm::StringRef(
process_infos.GetProcessNameAtIndex(i),
process_infos.GetProcessNameLengthAtIndex(i)));
}
}
}
}
return false;
}
// Instance variables to hold the values for command options.
ProcessAttachInfo attach_info;
};
CommandObjectProcessAttach(CommandInterpreter &interpreter)
: CommandObjectProcessLaunchOrAttach(
interpreter, "process attach", "Attach to a process.",
"process attach <cmd-options>", 0, "attach"),
m_options() {}
~CommandObjectProcessAttach() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
PlatformSP platform_sp(
m_interpreter.GetDebugger().GetPlatformList().GetSelectedPlatform());
Target *target = m_interpreter.GetDebugger().GetSelectedTarget().get();
// N.B. The attach should be synchronous. It doesn't help much to get the
// prompt back between initiating the attach and the target actually
// stopping. So even if the interpreter is set to be asynchronous, we wait
// for the stop ourselves here.
StateType state = eStateInvalid;
Process *process = m_exe_ctx.GetProcessPtr();
if (!StopProcessIfNecessary(process, state, result))
return false;
if (target == nullptr) {
// If there isn't a current target create one.
TargetSP new_target_sp;
Status error;
error = m_interpreter.GetDebugger().GetTargetList().CreateTarget(
m_interpreter.GetDebugger(), "", "", eLoadDependentsNo,
nullptr, // No platform options
new_target_sp);
target = new_target_sp.get();
if (target == nullptr || error.Fail()) {
result.AppendError(error.AsCString("Error creating target"));
return false;
}
m_interpreter.GetDebugger().GetTargetList().SetSelectedTarget(target);
}
// Record the old executable module, we want to issue a warning if the
// process of attaching changed the current executable (like somebody said
// "file foo" then attached to a PID whose executable was bar.)
ModuleSP old_exec_module_sp = target->GetExecutableModule();
ArchSpec old_arch_spec = target->GetArchitecture();
if (command.GetArgumentCount()) {
result.AppendErrorWithFormat("Invalid arguments for '%s'.\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
m_interpreter.UpdateExecutionContext(nullptr);
StreamString stream;
const auto error = target->Attach(m_options.attach_info, &stream);
if (error.Success()) {
ProcessSP process_sp(target->GetProcessSP());
if (process_sp) {
result.AppendMessage(stream.GetString());
result.SetStatus(eReturnStatusSuccessFinishNoResult);
result.SetDidChangeProcessState(true);
result.SetAbnormalStopWasExpected(true);
} else {
result.AppendError(
"no error returned from Target::Attach, and target has no process");
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("attach failed: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
if (!result.Succeeded())
return false;
// Okay, we're done. Last step is to warn if the executable module has
// changed:
char new_path[PATH_MAX];
ModuleSP new_exec_module_sp(target->GetExecutableModule());
if (!old_exec_module_sp) {
// We might not have a module if we attached to a raw pid...
if (new_exec_module_sp) {
new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX);
result.AppendMessageWithFormat("Executable module set to \"%s\".\n",
new_path);
}
} else if (old_exec_module_sp->GetFileSpec() !=
new_exec_module_sp->GetFileSpec()) {
char old_path[PATH_MAX];
old_exec_module_sp->GetFileSpec().GetPath(old_path, PATH_MAX);
new_exec_module_sp->GetFileSpec().GetPath(new_path, PATH_MAX);
result.AppendWarningWithFormat(
"Executable module changed from \"%s\" to \"%s\".\n", old_path,
new_path);
}
if (!old_arch_spec.IsValid()) {
result.AppendMessageWithFormat(
"Architecture set to: %s.\n",
target->GetArchitecture().GetTriple().getTriple().c_str());
} else if (!old_arch_spec.IsExactMatch(target->GetArchitecture())) {
result.AppendWarningWithFormat(
"Architecture changed from %s to %s.\n",
old_arch_spec.GetTriple().getTriple().c_str(),
target->GetArchitecture().GetTriple().getTriple().c_str());
}
// This supports the use-case scenario of immediately continuing the
// process once attached.
if (m_options.attach_info.GetContinueOnceAttached())
m_interpreter.HandleCommand("process continue", eLazyBoolNo, result);
return result.Succeeded();
}
CommandOptions m_options;
};
// CommandObjectProcessContinue
static constexpr OptionDefinition g_process_continue_options[] = {
// clang-format off
{ LLDB_OPT_SET_ALL, false, "ignore-count",'i', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeUnsignedInteger, "Ignore <N> crossings of the breakpoint (if it exists) for the currently selected thread." }
// clang-format on
};
#pragma mark CommandObjectProcessContinue
class CommandObjectProcessContinue : public CommandObjectParsed {
public:
CommandObjectProcessContinue(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process continue",
"Continue execution of all threads in the current process.",
"process continue",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused),
m_options() {}
~CommandObjectProcessContinue() override = default;
protected:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'i':
if (option_arg.getAsInteger(0, m_ignore))
error.SetErrorStringWithFormat(
"invalid value for ignore option: \"%s\", should be a number.",
option_arg.str().c_str());
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
m_ignore = 0;
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_continue_options);
}
uint32_t m_ignore;
};
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
bool synchronous_execution = m_interpreter.GetSynchronous();
StateType state = process->GetState();
if (state == eStateStopped) {
if (command.GetArgumentCount() != 0) {
result.AppendErrorWithFormat(
"The '%s' command does not take any arguments.\n",
m_cmd_name.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
if (m_options.m_ignore > 0) {
ThreadSP sel_thread_sp(GetDefaultThread()->shared_from_this());
if (sel_thread_sp) {
StopInfoSP stop_info_sp = sel_thread_sp->GetStopInfo();
if (stop_info_sp &&
stop_info_sp->GetStopReason() == eStopReasonBreakpoint) {
lldb::break_id_t bp_site_id =
(lldb::break_id_t)stop_info_sp->GetValue();
BreakpointSiteSP bp_site_sp(
process->GetBreakpointSiteList().FindByID(bp_site_id));
if (bp_site_sp) {
const size_t num_owners = bp_site_sp->GetNumberOfOwners();
for (size_t i = 0; i < num_owners; i++) {
Breakpoint &bp_ref =
bp_site_sp->GetOwnerAtIndex(i)->GetBreakpoint();
if (!bp_ref.IsInternal()) {
bp_ref.SetIgnoreCount(m_options.m_ignore);
}
}
}
}
}
}
{ // Scope for thread list mutex:
std::lock_guard<std::recursive_mutex> guard(
process->GetThreadList().GetMutex());
const uint32_t num_threads = process->GetThreadList().GetSize();
// Set the actions that the threads should each take when resuming
for (uint32_t idx = 0; idx < num_threads; ++idx) {
const bool override_suspend = false;
process->GetThreadList().GetThreadAtIndex(idx)->SetResumeState(
eStateRunning, override_suspend);
}
}
const uint32_t iohandler_id = process->GetIOHandlerID();
StreamString stream;
Status error;
if (synchronous_execution)
error = process->ResumeSynchronous(&stream);
else
error = process->Resume();
if (error.Success()) {
// There is a race condition where this thread will return up the call
// stack to the main command handler and show an (lldb) prompt before
// HandlePrivateEvent (from PrivateStateThread) has a chance to call
// PushProcessIOHandler().
process->SyncIOHandler(iohandler_id, std::chrono::seconds(2));
result.AppendMessageWithFormat("Process %" PRIu64 " resuming\n",
process->GetID());
if (synchronous_execution) {
// If any state changed events had anything to say, add that to the
// result
result.AppendMessage(stream.GetString());
result.SetDidChangeProcessState(true);
result.SetStatus(eReturnStatusSuccessFinishNoResult);
} else {
result.SetStatus(eReturnStatusSuccessContinuingNoResult);
}
} else {
result.AppendErrorWithFormat("Failed to resume process: %s.\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat(
"Process cannot be continued from its current state (%s).\n",
StateAsCString(state));
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
Options *GetOptions() override { return &m_options; }
CommandOptions m_options;
};
// CommandObjectProcessDetach
static constexpr OptionDefinition g_process_detach_options[] = {
// clang-format off
{ LLDB_OPT_SET_1, false, "keep-stopped", 's', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean, "Whether or not the process should be kept stopped on detach (if possible)." },
// clang-format on
};
#pragma mark CommandObjectProcessDetach
class CommandObjectProcessDetach : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 's':
bool tmp_result;
bool success;
tmp_result = OptionArgParser::ToBoolean(option_arg, false, &success);
if (!success)
error.SetErrorStringWithFormat("invalid boolean option: \"%s\"",
option_arg.str().c_str());
else {
if (tmp_result)
m_keep_stopped = eLazyBoolYes;
else
m_keep_stopped = eLazyBoolNo;
}
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
m_keep_stopped = eLazyBoolCalculate;
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_detach_options);
}
// Instance variables to hold the values for command options.
LazyBool m_keep_stopped;
};
CommandObjectProcessDetach(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process detach",
"Detach from the current target process.",
"process detach",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched),
m_options() {}
~CommandObjectProcessDetach() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
// FIXME: This will be a Command Option:
bool keep_stopped;
if (m_options.m_keep_stopped == eLazyBoolCalculate) {
// Check the process default:
keep_stopped = process->GetDetachKeepsStopped();
} else if (m_options.m_keep_stopped == eLazyBoolYes)
keep_stopped = true;
else
keep_stopped = false;
Status error(process->Detach(keep_stopped));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Detach failed: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
CommandOptions m_options;
};
// CommandObjectProcessConnect
static constexpr OptionDefinition g_process_connect_options[] = {
// clang-format off
{ LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypePlugin, "Name of the process plugin you want to use." },
// clang-format on
};
#pragma mark CommandObjectProcessConnect
class CommandObjectProcessConnect : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'p':
plugin_name.assign(option_arg);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
plugin_name.clear();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_connect_options);
}
// Instance variables to hold the values for command options.
std::string plugin_name;
};
CommandObjectProcessConnect(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process connect",
"Connect to a remote debug service.",
"process connect <remote-url>", 0),
m_options() {}
~CommandObjectProcessConnect() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
if (command.GetArgumentCount() != 1) {
result.AppendErrorWithFormat(
"'%s' takes exactly one argument:\nUsage: %s\n", m_cmd_name.c_str(),
m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
return false;
}
Process *process = m_exe_ctx.GetProcessPtr();
if (process && process->IsAlive()) {
result.AppendErrorWithFormat(
"Process %" PRIu64
" is currently being debugged, kill the process before connecting.\n",
process->GetID());
result.SetStatus(eReturnStatusFailed);
return false;
}
const char *plugin_name = nullptr;
if (!m_options.plugin_name.empty())
plugin_name = m_options.plugin_name.c_str();
Status error;
Debugger &debugger = m_interpreter.GetDebugger();
PlatformSP platform_sp = m_interpreter.GetPlatform(true);
ProcessSP process_sp = platform_sp->ConnectProcess(
command.GetArgumentAtIndex(0), plugin_name, debugger,
debugger.GetSelectedTarget().get(), error);
if (error.Fail() || process_sp == nullptr) {
result.AppendError(error.AsCString("Error connecting to the process"));
result.SetStatus(eReturnStatusFailed);
return false;
}
return true;
}
CommandOptions m_options;
};
// CommandObjectProcessPlugin
#pragma mark CommandObjectProcessPlugin
class CommandObjectProcessPlugin : public CommandObjectProxy {
public:
CommandObjectProcessPlugin(CommandInterpreter &interpreter)
: CommandObjectProxy(
interpreter, "process plugin",
"Send a custom command to the current target process plug-in.",
"process plugin <args>", 0) {}
~CommandObjectProcessPlugin() override = default;
CommandObject *GetProxyCommandObject() override {
Process *process = m_interpreter.GetExecutionContext().GetProcessPtr();
if (process)
return process->GetPluginCommandObject();
return nullptr;
}
};
// CommandObjectProcessLoad
static constexpr OptionDefinition g_process_load_options[] = {
// clang-format off
{ LLDB_OPT_SET_ALL, false, "install", 'i', OptionParser::eOptionalArgument, nullptr, {}, 0, eArgTypePath, "Install the shared library to the target. If specified without an argument then the library will installed in the current working directory." },
// clang-format on
};
#pragma mark CommandObjectProcessLoad
class CommandObjectProcessLoad : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() {
// Keep default values of all options in one place: OptionParsingStarting
// ()
OptionParsingStarting(nullptr);
}
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 'i':
do_install = true;
if (!option_arg.empty())
install_path.SetFile(option_arg, FileSpec::Style::native);
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
do_install = false;
install_path.Clear();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_load_options);
}
// Instance variables to hold the values for command options.
bool do_install;
FileSpec install_path;
};
CommandObjectProcessLoad(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process load",
"Load a shared library into the current process.",
"process load <filename> [<filename> ...]",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched |
eCommandProcessMustBePaused),
m_options() {}
~CommandObjectProcessLoad() override = default;
Options *GetOptions() override { return &m_options; }
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
for (auto &entry : command.entries()) {
Status error;
PlatformSP platform = process->GetTarget().GetPlatform();
llvm::StringRef image_path = entry.ref;
uint32_t image_token = LLDB_INVALID_IMAGE_TOKEN;
if (!m_options.do_install) {
FileSpec image_spec(image_path);
platform->ResolveRemotePath(image_spec, image_spec);
image_token =
platform->LoadImage(process, FileSpec(), image_spec, error);
} else if (m_options.install_path) {
FileSpec image_spec(image_path);
FileSystem::Instance().Resolve(image_spec);
platform->ResolveRemotePath(m_options.install_path,
m_options.install_path);
image_token = platform->LoadImage(process, image_spec,
m_options.install_path, error);
} else {
FileSpec image_spec(image_path);
FileSystem::Instance().Resolve(image_spec);
image_token =
platform->LoadImage(process, image_spec, FileSpec(), error);
}
if (image_token != LLDB_INVALID_IMAGE_TOKEN) {
result.AppendMessageWithFormat(
"Loading \"%s\"...ok\nImage %u loaded.\n", image_path.str().c_str(),
image_token);
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("failed to load '%s': %s",
image_path.str().c_str(),
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
return result.Succeeded();
}
CommandOptions m_options;
};
// CommandObjectProcessUnload
#pragma mark CommandObjectProcessUnload
class CommandObjectProcessUnload : public CommandObjectParsed {
public:
CommandObjectProcessUnload(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process unload",
"Unload a shared library from the current process using the index "
"returned by a previous call to \"process load\".",
"process unload <index>",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched | eCommandProcessMustBePaused) {}
~CommandObjectProcessUnload() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
for (auto &entry : command.entries()) {
uint32_t image_token;
if (entry.ref.getAsInteger(0, image_token)) {
result.AppendErrorWithFormat("invalid image index argument '%s'",
entry.ref.str().c_str());
result.SetStatus(eReturnStatusFailed);
break;
} else {
Status error(process->GetTarget().GetPlatform()->UnloadImage(
process, image_token));
if (error.Success()) {
result.AppendMessageWithFormat(
"Unloading shared library with index %u...ok\n", image_token);
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("failed to unload image: %s",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
break;
}
}
}
return result.Succeeded();
}
};
// CommandObjectProcessSignal
#pragma mark CommandObjectProcessSignal
class CommandObjectProcessSignal : public CommandObjectParsed {
public:
CommandObjectProcessSignal(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process signal",
"Send a UNIX signal to the current target process.",
nullptr, eCommandRequiresProcess |
eCommandTryTargetAPILock) {
CommandArgumentEntry arg;
CommandArgumentData signal_arg;
// Define the first (and only) variant of this arg.
signal_arg.arg_type = eArgTypeUnixSignal;
signal_arg.arg_repetition = eArgRepeatPlain;
// There is only one variant this argument could be; put it into the
// argument entry.
arg.push_back(signal_arg);
// Push the data for the first argument into the m_arguments vector.
m_arguments.push_back(arg);
}
~CommandObjectProcessSignal() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (command.GetArgumentCount() == 1) {
int signo = LLDB_INVALID_SIGNAL_NUMBER;
const char *signal_name = command.GetArgumentAtIndex(0);
if (::isxdigit(signal_name[0]))
signo =
StringConvert::ToSInt32(signal_name, LLDB_INVALID_SIGNAL_NUMBER, 0);
else
signo = process->GetUnixSignals()->GetSignalNumberFromName(signal_name);
if (signo == LLDB_INVALID_SIGNAL_NUMBER) {
result.AppendErrorWithFormat("Invalid signal argument '%s'.\n",
command.GetArgumentAtIndex(0));
result.SetStatus(eReturnStatusFailed);
} else {
Status error(process->Signal(signo));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to send signal %i: %s\n", signo,
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
}
} else {
result.AppendErrorWithFormat(
"'%s' takes exactly one signal number argument:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
// CommandObjectProcessInterrupt
#pragma mark CommandObjectProcessInterrupt
class CommandObjectProcessInterrupt : public CommandObjectParsed {
public:
CommandObjectProcessInterrupt(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process interrupt",
"Interrupt the current target process.",
"process interrupt",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessInterrupt() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (process == nullptr) {
result.AppendError("no process to halt");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0) {
bool clear_thread_plans = true;
Status error(process->Halt(clear_thread_plans));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to halt process: %s\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
// CommandObjectProcessKill
#pragma mark CommandObjectProcessKill
class CommandObjectProcessKill : public CommandObjectParsed {
public:
CommandObjectProcessKill(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process kill",
"Terminate the current target process.",
"process kill",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessKill() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
Process *process = m_exe_ctx.GetProcessPtr();
if (process == nullptr) {
result.AppendError("no process to kill");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (command.GetArgumentCount() == 0) {
Status error(process->Destroy(true));
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat("Failed to kill process: %s\n",
error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes no arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
return result.Succeeded();
}
};
// CommandObjectProcessSaveCore
#pragma mark CommandObjectProcessSaveCore
class CommandObjectProcessSaveCore : public CommandObjectParsed {
public:
CommandObjectProcessSaveCore(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process save-core",
"Save the current process as a core file using an "
"appropriate file type.",
"process save-core FILE",
eCommandRequiresProcess | eCommandTryTargetAPILock |
eCommandProcessMustBeLaunched) {}
~CommandObjectProcessSaveCore() override = default;
protected:
bool DoExecute(Args &command, CommandReturnObject &result) override {
ProcessSP process_sp = m_exe_ctx.GetProcessSP();
if (process_sp) {
if (command.GetArgumentCount() == 1) {
FileSpec output_file(command.GetArgumentAtIndex(0));
Status error = PluginManager::SaveCore(process_sp, output_file);
if (error.Success()) {
result.SetStatus(eReturnStatusSuccessFinishResult);
} else {
result.AppendErrorWithFormat(
"Failed to save core file for process: %s\n", error.AsCString());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendErrorWithFormat("'%s' takes one arguments:\nUsage: %s\n",
m_cmd_name.c_str(), m_cmd_syntax.c_str());
result.SetStatus(eReturnStatusFailed);
}
} else {
result.AppendError("invalid process");
result.SetStatus(eReturnStatusFailed);
return false;
}
return result.Succeeded();
}
};
// CommandObjectProcessStatus
#pragma mark CommandObjectProcessStatus
class CommandObjectProcessStatus : public CommandObjectParsed {
public:
CommandObjectProcessStatus(CommandInterpreter &interpreter)
: CommandObjectParsed(
interpreter, "process status",
"Show status and stop location for the current target process.",
"process status",
eCommandRequiresProcess | eCommandTryTargetAPILock) {}
~CommandObjectProcessStatus() override = default;
bool DoExecute(Args &command, CommandReturnObject &result) override {
Stream &strm = result.GetOutputStream();
result.SetStatus(eReturnStatusSuccessFinishNoResult);
// No need to check "process" for validity as eCommandRequiresProcess
// ensures it is valid
Process *process = m_exe_ctx.GetProcessPtr();
const bool only_threads_with_stop_reason = true;
const uint32_t start_frame = 0;
const uint32_t num_frames = 1;
const uint32_t num_frames_with_source = 1;
const bool stop_format = true;
process->GetStatus(strm);
process->GetThreadStatus(strm, only_threads_with_stop_reason, start_frame,
num_frames, num_frames_with_source, stop_format);
return result.Succeeded();
}
};
// CommandObjectProcessHandle
static constexpr OptionDefinition g_process_handle_options[] = {
// clang-format off
{ LLDB_OPT_SET_1, false, "stop", 's', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean, "Whether or not the process should be stopped if the signal is received." },
{ LLDB_OPT_SET_1, false, "notify", 'n', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean, "Whether or not the debugger should notify the user if the signal is received." },
{ LLDB_OPT_SET_1, false, "pass", 'p', OptionParser::eRequiredArgument, nullptr, {}, 0, eArgTypeBoolean, "Whether or not the signal should be passed to the process." }
// clang-format on
};
#pragma mark CommandObjectProcessHandle
class CommandObjectProcessHandle : public CommandObjectParsed {
public:
class CommandOptions : public Options {
public:
CommandOptions() : Options() { OptionParsingStarting(nullptr); }
~CommandOptions() override = default;
Status SetOptionValue(uint32_t option_idx, llvm::StringRef option_arg,
ExecutionContext *execution_context) override {
Status error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option) {
case 's':
stop = option_arg;
break;
case 'n':
notify = option_arg;
break;
case 'p':
pass = option_arg;
break;
default:
error.SetErrorStringWithFormat("invalid short option character '%c'",
short_option);
break;
}
return error;
}
void OptionParsingStarting(ExecutionContext *execution_context) override {
stop.clear();
notify.clear();
pass.clear();
}
llvm::ArrayRef<OptionDefinition> GetDefinitions() override {
return llvm::makeArrayRef(g_process_handle_options);
}
// Instance variables to hold the values for command options.
std::string stop;
std::string notify;
std::string pass;
};
CommandObjectProcessHandle(CommandInterpreter &interpreter)
: CommandObjectParsed(interpreter, "process handle",
"Manage LLDB handling of OS signals for the "
"current target process. Defaults to showing "
"current policy.",
nullptr),
m_options() {
SetHelpLong("\nIf no signals are specified, update them all. If no update "
"option is specified, list the current values.");
CommandArgumentEntry arg;
CommandArgumentData signal_arg;
signal_arg.arg_type = eArgTypeUnixSignal;
signal_arg.arg_repetition = eArgRepeatStar;
arg.push_back(signal_arg);
m_arguments.push_back(arg);
}
~CommandObjectProcessHandle() override = default;
Options *GetOptions() override { return &m_options; }
bool VerifyCommandOptionValue(const std::string &option, int &real_value) {
bool okay = true;
bool success = false;
bool tmp_value = OptionArgParser::ToBoolean(option, false, &success);
if (success && tmp_value)
real_value = 1;
else if (success && !tmp_value)
real_value = 0;
else {
// If the value isn't 'true' or 'false', it had better be 0 or 1.
real_value = StringConvert::ToUInt32(option.c_str(), 3);
if (real_value != 0 && real_value != 1)
okay = false;
}
return okay;
}
void PrintSignalHeader(Stream &str) {
str.Printf("NAME PASS STOP NOTIFY\n");
str.Printf("=========== ===== ===== ======\n");
}
void PrintSignal(Stream &str, int32_t signo, const char *sig_name,
const UnixSignalsSP &signals_sp) {
bool stop;
bool suppress;
bool notify;
str.Printf("%-11s ", sig_name);
if (signals_sp->GetSignalInfo(signo, suppress, stop, notify)) {
bool pass = !suppress;
str.Printf("%s %s %s", (pass ? "true " : "false"),
(stop ? "true " : "false"), (notify ? "true " : "false"));
}
str.Printf("\n");
}
void PrintSignalInformation(Stream &str, Args &signal_args,
int num_valid_signals,
const UnixSignalsSP &signals_sp) {
PrintSignalHeader(str);
if (num_valid_signals > 0) {
size_t num_args = signal_args.GetArgumentCount();
for (size_t i = 0; i < num_args; ++i) {
int32_t signo = signals_sp->GetSignalNumberFromName(
signal_args.GetArgumentAtIndex(i));
if (signo != LLDB_INVALID_SIGNAL_NUMBER)
PrintSignal(str, signo, signal_args.GetArgumentAtIndex(i),
signals_sp);
}
} else // Print info for ALL signals
{
int32_t signo = signals_sp->GetFirstSignalNumber();
while (signo != LLDB_INVALID_SIGNAL_NUMBER) {
PrintSignal(str, signo, signals_sp->GetSignalAsCString(signo),
signals_sp);
signo = signals_sp->GetNextSignalNumber(signo);
}
}
}
protected:
bool DoExecute(Args &signal_args, CommandReturnObject &result) override {
TargetSP target_sp = m_interpreter.GetDebugger().GetSelectedTarget();
if (!target_sp) {
result.AppendError("No current target;"
" cannot handle signals until you have a valid target "
"and process.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
ProcessSP process_sp = target_sp->GetProcessSP();
if (!process_sp) {
result.AppendError("No current process; cannot handle signals until you "
"have a valid process.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
int stop_action = -1; // -1 means leave the current setting alone
int pass_action = -1; // -1 means leave the current setting alone
int notify_action = -1; // -1 means leave the current setting alone
if (!m_options.stop.empty() &&
!VerifyCommandOptionValue(m_options.stop, stop_action)) {
result.AppendError("Invalid argument for command option --stop; must be "
"true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (!m_options.notify.empty() &&
!VerifyCommandOptionValue(m_options.notify, notify_action)) {
result.AppendError("Invalid argument for command option --notify; must "
"be true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
if (!m_options.pass.empty() &&
!VerifyCommandOptionValue(m_options.pass, pass_action)) {
result.AppendError("Invalid argument for command option --pass; must be "
"true or false.\n");
result.SetStatus(eReturnStatusFailed);
return false;
}
size_t num_args = signal_args.GetArgumentCount();
UnixSignalsSP signals_sp = process_sp->GetUnixSignals();
int num_signals_set = 0;
if (num_args > 0) {
for (const auto &arg : signal_args) {
int32_t signo = signals_sp->GetSignalNumberFromName(arg.c_str());
if (signo != LLDB_INVALID_SIGNAL_NUMBER) {
// Casting the actions as bools here should be okay, because
// VerifyCommandOptionValue guarantees the value is either 0 or 1.
if (stop_action != -1)
signals_sp->SetShouldStop(signo, stop_action);
if (pass_action != -1) {
bool suppress = !pass_action;
signals_sp->SetShouldSuppress(signo, suppress);
}
if (notify_action != -1)
signals_sp->SetShouldNotify(signo, notify_action);
++num_signals_set;
} else {
result.AppendErrorWithFormat("Invalid signal name '%s'\n",
arg.c_str());
}
}
} else {
// No signal specified, if any command options were specified, update ALL
// signals.
if ((notify_action != -1) || (stop_action != -1) || (pass_action != -1)) {
if (m_interpreter.Confirm(
"Do you really want to update all the signals?", false)) {
int32_t signo = signals_sp->GetFirstSignalNumber();
while (signo != LLDB_INVALID_SIGNAL_NUMBER) {
if (notify_action != -1)
signals_sp->SetShouldNotify(signo, notify_action);
if (stop_action != -1)
signals_sp->SetShouldStop(signo, stop_action);
if (pass_action != -1) {
bool suppress = !pass_action;
signals_sp->SetShouldSuppress(signo, suppress);
}
signo = signals_sp->GetNextSignalNumber(signo);
}
}
}
}
PrintSignalInformation(result.GetOutputStream(), signal_args,
num_signals_set, signals_sp);
if (num_signals_set > 0)
result.SetStatus(eReturnStatusSuccessFinishNoResult);
else
result.SetStatus(eReturnStatusFailed);
return result.Succeeded();
}
CommandOptions m_options;
};
// CommandObjectMultiwordProcess
CommandObjectMultiwordProcess::CommandObjectMultiwordProcess(
CommandInterpreter &interpreter)
: CommandObjectMultiword(
interpreter, "process",
"Commands for interacting with processes on the current platform.",
"process <subcommand> [<subcommand-options>]") {
LoadSubCommand("attach",
CommandObjectSP(new CommandObjectProcessAttach(interpreter)));
LoadSubCommand("launch",
CommandObjectSP(new CommandObjectProcessLaunch(interpreter)));
LoadSubCommand("continue", CommandObjectSP(new CommandObjectProcessContinue(
interpreter)));
LoadSubCommand("connect",
CommandObjectSP(new CommandObjectProcessConnect(interpreter)));
LoadSubCommand("detach",
CommandObjectSP(new CommandObjectProcessDetach(interpreter)));
LoadSubCommand("load",
CommandObjectSP(new CommandObjectProcessLoad(interpreter)));
LoadSubCommand("unload",
CommandObjectSP(new CommandObjectProcessUnload(interpreter)));
LoadSubCommand("signal",
CommandObjectSP(new CommandObjectProcessSignal(interpreter)));
LoadSubCommand("handle",
CommandObjectSP(new CommandObjectProcessHandle(interpreter)));
LoadSubCommand("status",
CommandObjectSP(new CommandObjectProcessStatus(interpreter)));
LoadSubCommand("interrupt", CommandObjectSP(new CommandObjectProcessInterrupt(
interpreter)));
LoadSubCommand("kill",
CommandObjectSP(new CommandObjectProcessKill(interpreter)));
LoadSubCommand("plugin",
CommandObjectSP(new CommandObjectProcessPlugin(interpreter)));
LoadSubCommand("save-core", CommandObjectSP(new CommandObjectProcessSaveCore(
interpreter)));
}
CommandObjectMultiwordProcess::~CommandObjectMultiwordProcess() = default;
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