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Process.cpp
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Process.cpp
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//===-- Process.cpp ---------------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "lldb/lldb-python.h"
#include "lldb/Target/Process.h"
#include "lldb/lldb-private-log.h"
#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Core/Event.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Module.h"
#include "lldb/Core/PluginManager.h"
#include "lldb/Core/State.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Expression/ClangUserExpression.h"
#include "lldb/Host/ConnectionFileDescriptor.h"
#include "lldb/Host/Host.h"
#include "lldb/Host/HostInfo.h"
#include "lldb/Host/Pipe.h"
#include "lldb/Host/Terminal.h"
#include "lldb/Host/ThreadLauncher.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Symbol/Symbol.h"
#include "lldb/Target/ABI.h"
#include "lldb/Target/DynamicLoader.h"
#include "lldb/Target/JITLoader.h"
#include "lldb/Target/MemoryHistory.h"
#include "lldb/Target/OperatingSystem.h"
#include "lldb/Target/LanguageRuntime.h"
#include "lldb/Target/CPPLanguageRuntime.h"
#include "lldb/Target/ObjCLanguageRuntime.h"
#include "lldb/Target/Platform.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/StopInfo.h"
#include "lldb/Target/SystemRuntime.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/TargetList.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadPlan.h"
#include "lldb/Target/ThreadPlanBase.h"
#include "lldb/Target/InstrumentationRuntime.h"
#include "Plugins/Process/Utility/InferiorCallPOSIX.h"
using namespace lldb;
using namespace lldb_private;
// Comment out line below to disable memory caching, overriding the process setting
// target.process.disable-memory-cache
#define ENABLE_MEMORY_CACHING
#ifdef ENABLE_MEMORY_CACHING
#define DISABLE_MEM_CACHE_DEFAULT false
#else
#define DISABLE_MEM_CACHE_DEFAULT true
#endif
class ProcessOptionValueProperties : public OptionValueProperties
{
public:
ProcessOptionValueProperties (const ConstString &name) :
OptionValueProperties (name)
{
}
// This constructor is used when creating ProcessOptionValueProperties when it
// is part of a new lldb_private::Process instance. It will copy all current
// global property values as needed
ProcessOptionValueProperties (ProcessProperties *global_properties) :
OptionValueProperties(*global_properties->GetValueProperties())
{
}
virtual const Property *
GetPropertyAtIndex (const ExecutionContext *exe_ctx, bool will_modify, uint32_t idx) const
{
// When getting the value for a key from the process options, we will always
// try and grab the setting from the current process if there is one. Else we just
// use the one from this instance.
if (exe_ctx)
{
Process *process = exe_ctx->GetProcessPtr();
if (process)
{
ProcessOptionValueProperties *instance_properties = static_cast<ProcessOptionValueProperties *>(process->GetValueProperties().get());
if (this != instance_properties)
return instance_properties->ProtectedGetPropertyAtIndex (idx);
}
}
return ProtectedGetPropertyAtIndex (idx);
}
};
static PropertyDefinition
g_properties[] =
{
{ "disable-memory-cache" , OptionValue::eTypeBoolean, false, DISABLE_MEM_CACHE_DEFAULT, NULL, NULL, "Disable reading and caching of memory in fixed-size units." },
{ "extra-startup-command", OptionValue::eTypeArray , false, OptionValue::eTypeString, NULL, NULL, "A list containing extra commands understood by the particular process plugin used. "
"For instance, to turn on debugserver logging set this to \"QSetLogging:bitmask=LOG_DEFAULT;\"" },
{ "ignore-breakpoints-in-expressions", OptionValue::eTypeBoolean, true, true, NULL, NULL, "If true, breakpoints will be ignored during expression evaluation." },
{ "unwind-on-error-in-expressions", OptionValue::eTypeBoolean, true, true, NULL, NULL, "If true, errors in expression evaluation will unwind the stack back to the state before the call." },
{ "python-os-plugin-path", OptionValue::eTypeFileSpec, false, true, NULL, NULL, "A path to a python OS plug-in module file that contains a OperatingSystemPlugIn class." },
{ "stop-on-sharedlibrary-events" , OptionValue::eTypeBoolean, true, false, NULL, NULL, "If true, stop when a shared library is loaded or unloaded." },
{ "detach-keeps-stopped" , OptionValue::eTypeBoolean, true, false, NULL, NULL, "If true, detach will attempt to keep the process stopped." },
{ "memory-cache-line-size" , OptionValue::eTypeUInt64, false, 512, NULL, NULL, "The memory cache line size" },
{ NULL , OptionValue::eTypeInvalid, false, 0, NULL, NULL, NULL }
};
enum {
ePropertyDisableMemCache,
ePropertyExtraStartCommand,
ePropertyIgnoreBreakpointsInExpressions,
ePropertyUnwindOnErrorInExpressions,
ePropertyPythonOSPluginPath,
ePropertyStopOnSharedLibraryEvents,
ePropertyDetachKeepsStopped,
ePropertyMemCacheLineSize
};
ProcessProperties::ProcessProperties (lldb_private::Process *process) :
Properties (),
m_process (process) // Can be NULL for global ProcessProperties
{
if (process == NULL)
{
// Global process properties, set them up one time
m_collection_sp.reset (new ProcessOptionValueProperties(ConstString("process")));
m_collection_sp->Initialize(g_properties);
m_collection_sp->AppendProperty(ConstString("thread"),
ConstString("Settings specific to threads."),
true,
Thread::GetGlobalProperties()->GetValueProperties());
}
else
{
m_collection_sp.reset (new ProcessOptionValueProperties(Process::GetGlobalProperties().get()));
m_collection_sp->SetValueChangedCallback(ePropertyPythonOSPluginPath, ProcessProperties::OptionValueChangedCallback, this);
}
}
ProcessProperties::~ProcessProperties()
{
}
void
ProcessProperties::OptionValueChangedCallback (void *baton, OptionValue *option_value)
{
ProcessProperties *properties = (ProcessProperties *)baton;
if (properties->m_process)
properties->m_process->LoadOperatingSystemPlugin(true);
}
bool
ProcessProperties::GetDisableMemoryCache() const
{
const uint32_t idx = ePropertyDisableMemCache;
return m_collection_sp->GetPropertyAtIndexAsBoolean (NULL, idx, g_properties[idx].default_uint_value != 0);
}
uint64_t
ProcessProperties::GetMemoryCacheLineSize() const
{
const uint32_t idx = ePropertyMemCacheLineSize;
return m_collection_sp->GetPropertyAtIndexAsUInt64 (NULL, idx, g_properties[idx].default_uint_value);
}
Args
ProcessProperties::GetExtraStartupCommands () const
{
Args args;
const uint32_t idx = ePropertyExtraStartCommand;
m_collection_sp->GetPropertyAtIndexAsArgs(NULL, idx, args);
return args;
}
void
ProcessProperties::SetExtraStartupCommands (const Args &args)
{
const uint32_t idx = ePropertyExtraStartCommand;
m_collection_sp->SetPropertyAtIndexFromArgs(NULL, idx, args);
}
FileSpec
ProcessProperties::GetPythonOSPluginPath () const
{
const uint32_t idx = ePropertyPythonOSPluginPath;
return m_collection_sp->GetPropertyAtIndexAsFileSpec(NULL, idx);
}
void
ProcessProperties::SetPythonOSPluginPath (const FileSpec &file)
{
const uint32_t idx = ePropertyPythonOSPluginPath;
m_collection_sp->SetPropertyAtIndexAsFileSpec(NULL, idx, file);
}
bool
ProcessProperties::GetIgnoreBreakpointsInExpressions () const
{
const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions;
return m_collection_sp->GetPropertyAtIndexAsBoolean(NULL, idx, g_properties[idx].default_uint_value != 0);
}
void
ProcessProperties::SetIgnoreBreakpointsInExpressions (bool ignore)
{
const uint32_t idx = ePropertyIgnoreBreakpointsInExpressions;
m_collection_sp->SetPropertyAtIndexAsBoolean(NULL, idx, ignore);
}
bool
ProcessProperties::GetUnwindOnErrorInExpressions () const
{
const uint32_t idx = ePropertyUnwindOnErrorInExpressions;
return m_collection_sp->GetPropertyAtIndexAsBoolean(NULL, idx, g_properties[idx].default_uint_value != 0);
}
void
ProcessProperties::SetUnwindOnErrorInExpressions (bool ignore)
{
const uint32_t idx = ePropertyUnwindOnErrorInExpressions;
m_collection_sp->SetPropertyAtIndexAsBoolean(NULL, idx, ignore);
}
bool
ProcessProperties::GetStopOnSharedLibraryEvents () const
{
const uint32_t idx = ePropertyStopOnSharedLibraryEvents;
return m_collection_sp->GetPropertyAtIndexAsBoolean(NULL, idx, g_properties[idx].default_uint_value != 0);
}
void
ProcessProperties::SetStopOnSharedLibraryEvents (bool stop)
{
const uint32_t idx = ePropertyStopOnSharedLibraryEvents;
m_collection_sp->SetPropertyAtIndexAsBoolean(NULL, idx, stop);
}
bool
ProcessProperties::GetDetachKeepsStopped () const
{
const uint32_t idx = ePropertyDetachKeepsStopped;
return m_collection_sp->GetPropertyAtIndexAsBoolean(NULL, idx, g_properties[idx].default_uint_value != 0);
}
void
ProcessProperties::SetDetachKeepsStopped (bool stop)
{
const uint32_t idx = ePropertyDetachKeepsStopped;
m_collection_sp->SetPropertyAtIndexAsBoolean(NULL, idx, stop);
}
void
ProcessInstanceInfo::Dump (Stream &s, Platform *platform) const
{
const char *cstr;
if (m_pid != LLDB_INVALID_PROCESS_ID)
s.Printf (" pid = %" PRIu64 "\n", m_pid);
if (m_parent_pid != LLDB_INVALID_PROCESS_ID)
s.Printf (" parent = %" PRIu64 "\n", m_parent_pid);
if (m_executable)
{
s.Printf (" name = %s\n", m_executable.GetFilename().GetCString());
s.PutCString (" file = ");
m_executable.Dump(&s);
s.EOL();
}
const uint32_t argc = m_arguments.GetArgumentCount();
if (argc > 0)
{
for (uint32_t i=0; i<argc; i++)
{
const char *arg = m_arguments.GetArgumentAtIndex(i);
if (i < 10)
s.Printf (" arg[%u] = %s\n", i, arg);
else
s.Printf ("arg[%u] = %s\n", i, arg);
}
}
const uint32_t envc = m_environment.GetArgumentCount();
if (envc > 0)
{
for (uint32_t i=0; i<envc; i++)
{
const char *env = m_environment.GetArgumentAtIndex(i);
if (i < 10)
s.Printf (" env[%u] = %s\n", i, env);
else
s.Printf ("env[%u] = %s\n", i, env);
}
}
if (m_arch.IsValid())
s.Printf (" arch = %s\n", m_arch.GetTriple().str().c_str());
if (m_uid != UINT32_MAX)
{
cstr = platform->GetUserName (m_uid);
s.Printf (" uid = %-5u (%s)\n", m_uid, cstr ? cstr : "");
}
if (m_gid != UINT32_MAX)
{
cstr = platform->GetGroupName (m_gid);
s.Printf (" gid = %-5u (%s)\n", m_gid, cstr ? cstr : "");
}
if (m_euid != UINT32_MAX)
{
cstr = platform->GetUserName (m_euid);
s.Printf (" euid = %-5u (%s)\n", m_euid, cstr ? cstr : "");
}
if (m_egid != UINT32_MAX)
{
cstr = platform->GetGroupName (m_egid);
s.Printf (" egid = %-5u (%s)\n", m_egid, cstr ? cstr : "");
}
}
void
ProcessInstanceInfo::DumpTableHeader (Stream &s, Platform *platform, bool show_args, bool verbose)
{
const char *label;
if (show_args || verbose)
label = "ARGUMENTS";
else
label = "NAME";
if (verbose)
{
s.Printf ("PID PARENT USER GROUP EFF USER EFF GROUP TRIPLE %s\n", label);
s.PutCString ("====== ====== ========== ========== ========== ========== ======================== ============================\n");
}
else
{
s.Printf ("PID PARENT USER TRIPLE %s\n", label);
s.PutCString ("====== ====== ========== ======================== ============================\n");
}
}
void
ProcessInstanceInfo::DumpAsTableRow (Stream &s, Platform *platform, bool show_args, bool verbose) const
{
if (m_pid != LLDB_INVALID_PROCESS_ID)
{
const char *cstr;
s.Printf ("%-6" PRIu64 " %-6" PRIu64 " ", m_pid, m_parent_pid);
if (verbose)
{
cstr = platform->GetUserName (m_uid);
if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed
s.Printf ("%-10s ", cstr);
else
s.Printf ("%-10u ", m_uid);
cstr = platform->GetGroupName (m_gid);
if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed
s.Printf ("%-10s ", cstr);
else
s.Printf ("%-10u ", m_gid);
cstr = platform->GetUserName (m_euid);
if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed
s.Printf ("%-10s ", cstr);
else
s.Printf ("%-10u ", m_euid);
cstr = platform->GetGroupName (m_egid);
if (cstr && cstr[0]) // Watch for empty string that indicates lookup failed
s.Printf ("%-10s ", cstr);
else
s.Printf ("%-10u ", m_egid);
s.Printf ("%-24s ", m_arch.IsValid() ? m_arch.GetTriple().str().c_str() : "");
}
else
{
s.Printf ("%-10s %-24s ",
platform->GetUserName (m_euid),
m_arch.IsValid() ? m_arch.GetTriple().str().c_str() : "");
}
if (verbose || show_args)
{
const uint32_t argc = m_arguments.GetArgumentCount();
if (argc > 0)
{
for (uint32_t i=0; i<argc; i++)
{
if (i > 0)
s.PutChar (' ');
s.PutCString (m_arguments.GetArgumentAtIndex(i));
}
}
}
else
{
s.PutCString (GetName());
}
s.EOL();
}
}
Error
ProcessLaunchCommandOptions::SetOptionValue (uint32_t option_idx, const char *option_arg)
{
Error error;
const int short_option = m_getopt_table[option_idx].val;
switch (short_option)
{
case 's': // Stop at program entry point
launch_info.GetFlags().Set (eLaunchFlagStopAtEntry);
break;
case 'i': // STDIN for read only
{
FileAction action;
if (action.Open (STDIN_FILENO, option_arg, true, false))
launch_info.AppendFileAction (action);
break;
}
case 'o': // Open STDOUT for write only
{
FileAction action;
if (action.Open (STDOUT_FILENO, option_arg, false, true))
launch_info.AppendFileAction (action);
break;
}
case 'e': // STDERR for write only
{
FileAction action;
if (action.Open (STDERR_FILENO, option_arg, false, true))
launch_info.AppendFileAction (action);
break;
}
case 'p': // Process plug-in name
launch_info.SetProcessPluginName (option_arg);
break;
case 'n': // Disable STDIO
{
FileAction action;
if (action.Open (STDIN_FILENO, "/dev/null", true, false))
launch_info.AppendFileAction (action);
if (action.Open (STDOUT_FILENO, "/dev/null", false, true))
launch_info.AppendFileAction (action);
if (action.Open (STDERR_FILENO, "/dev/null", false, true))
launch_info.AppendFileAction (action);
break;
}
case 'w':
launch_info.SetWorkingDirectory (option_arg);
break;
case 't': // Open process in new terminal window
launch_info.GetFlags().Set (eLaunchFlagLaunchInTTY);
break;
case 'a':
if (!launch_info.GetArchitecture().SetTriple (option_arg, m_interpreter.GetPlatform(true).get()))
launch_info.GetArchitecture().SetTriple (option_arg);
break;
case 'A': // Disable ASLR.
{
bool success;
const bool disable_aslr_arg = Args::StringToBoolean (option_arg, true, &success);
if (success)
disable_aslr = disable_aslr_arg ? eLazyBoolYes : eLazyBoolNo;
else
error.SetErrorStringWithFormat ("Invalid boolean value for disable-aslr option: '%s'", option_arg ? option_arg : "<null>");
break;
}
case 'G': // Glob args.
{
bool success;
const bool glob_args = Args::StringToBoolean (option_arg, true, &success);
if (success)
launch_info.SetGlobArguments(glob_args);
else
error.SetErrorStringWithFormat ("Invalid boolean value for glob-args option: '%s'", option_arg ? option_arg : "<null>");
break;
}
case 'c':
if (option_arg && option_arg[0])
launch_info.SetShell (FileSpec(option_arg, false));
else
launch_info.SetShell (HostInfo::GetDefaultShell());
break;
case 'v':
launch_info.GetEnvironmentEntries().AppendArgument(option_arg);
break;
default:
error.SetErrorStringWithFormat("unrecognized short option character '%c'", short_option);
break;
}
return error;
}
OptionDefinition
ProcessLaunchCommandOptions::g_option_table[] =
{
{ LLDB_OPT_SET_ALL, false, "stop-at-entry", 's', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Stop at the entry point of the program when launching a process."},
{ LLDB_OPT_SET_ALL, false, "disable-aslr", 'A', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeBoolean, "Set whether to disable address space layout randomization when launching a process."},
{ LLDB_OPT_SET_ALL, false, "plugin", 'p', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypePlugin, "Name of the process plugin you want to use."},
{ LLDB_OPT_SET_ALL, false, "working-dir", 'w', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeDirectoryName, "Set the current working directory to <path> when running the inferior."},
{ LLDB_OPT_SET_ALL, false, "arch", 'a', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeArchitecture, "Set the architecture for the process to launch when ambiguous."},
{ LLDB_OPT_SET_ALL, false, "environment", 'v', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeNone, "Specify an environment variable name/value string (--environment NAME=VALUE). Can be specified multiple times for subsequent environment entries."},
{ LLDB_OPT_SET_1|LLDB_OPT_SET_2|LLDB_OPT_SET_3, false, "shell", 'c', OptionParser::eOptionalArgument, NULL, NULL, 0, eArgTypeFilename, "Run the process in a shell (not supported on all platforms)."},
{ LLDB_OPT_SET_1 , false, "stdin", 'i', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeFilename, "Redirect stdin for the process to <filename>."},
{ LLDB_OPT_SET_1 , false, "stdout", 'o', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeFilename, "Redirect stdout for the process to <filename>."},
{ LLDB_OPT_SET_1 , false, "stderr", 'e', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeFilename, "Redirect stderr for the process to <filename>."},
{ LLDB_OPT_SET_2 , false, "tty", 't', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Start the process in a terminal (not supported on all platforms)."},
{ LLDB_OPT_SET_3 , false, "no-stdio", 'n', OptionParser::eNoArgument, NULL, NULL, 0, eArgTypeNone, "Do not set up for terminal I/O to go to running process."},
{ LLDB_OPT_SET_4, false, "glob-args", 'G', OptionParser::eRequiredArgument, NULL, NULL, 0, eArgTypeBoolean, "Set whether to glob arguments to the process when launching."},
{ 0 , false, NULL, 0, 0, NULL, NULL, 0, eArgTypeNone, NULL }
};
bool
ProcessInstanceInfoMatch::NameMatches (const char *process_name) const
{
if (m_name_match_type == eNameMatchIgnore || process_name == NULL)
return true;
const char *match_name = m_match_info.GetName();
if (!match_name)
return true;
return lldb_private::NameMatches (process_name, m_name_match_type, match_name);
}
bool
ProcessInstanceInfoMatch::Matches (const ProcessInstanceInfo &proc_info) const
{
if (!NameMatches (proc_info.GetName()))
return false;
if (m_match_info.ProcessIDIsValid() &&
m_match_info.GetProcessID() != proc_info.GetProcessID())
return false;
if (m_match_info.ParentProcessIDIsValid() &&
m_match_info.GetParentProcessID() != proc_info.GetParentProcessID())
return false;
if (m_match_info.UserIDIsValid () &&
m_match_info.GetUserID() != proc_info.GetUserID())
return false;
if (m_match_info.GroupIDIsValid () &&
m_match_info.GetGroupID() != proc_info.GetGroupID())
return false;
if (m_match_info.EffectiveUserIDIsValid () &&
m_match_info.GetEffectiveUserID() != proc_info.GetEffectiveUserID())
return false;
if (m_match_info.EffectiveGroupIDIsValid () &&
m_match_info.GetEffectiveGroupID() != proc_info.GetEffectiveGroupID())
return false;
if (m_match_info.GetArchitecture().IsValid() &&
!m_match_info.GetArchitecture().IsCompatibleMatch(proc_info.GetArchitecture()))
return false;
return true;
}
bool
ProcessInstanceInfoMatch::MatchAllProcesses () const
{
if (m_name_match_type != eNameMatchIgnore)
return false;
if (m_match_info.ProcessIDIsValid())
return false;
if (m_match_info.ParentProcessIDIsValid())
return false;
if (m_match_info.UserIDIsValid ())
return false;
if (m_match_info.GroupIDIsValid ())
return false;
if (m_match_info.EffectiveUserIDIsValid ())
return false;
if (m_match_info.EffectiveGroupIDIsValid ())
return false;
if (m_match_info.GetArchitecture().IsValid())
return false;
if (m_match_all_users)
return false;
return true;
}
void
ProcessInstanceInfoMatch::Clear()
{
m_match_info.Clear();
m_name_match_type = eNameMatchIgnore;
m_match_all_users = false;
}
ProcessSP
Process::FindPlugin (Target &target, const char *plugin_name, Listener &listener, const FileSpec *crash_file_path)
{
static uint32_t g_process_unique_id = 0;
ProcessSP process_sp;
ProcessCreateInstance create_callback = NULL;
if (plugin_name)
{
ConstString const_plugin_name(plugin_name);
create_callback = PluginManager::GetProcessCreateCallbackForPluginName (const_plugin_name);
if (create_callback)
{
process_sp = create_callback(target, listener, crash_file_path);
if (process_sp)
{
if (process_sp->CanDebug(target, true))
{
process_sp->m_process_unique_id = ++g_process_unique_id;
}
else
process_sp.reset();
}
}
}
else
{
for (uint32_t idx = 0; (create_callback = PluginManager::GetProcessCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
process_sp = create_callback(target, listener, crash_file_path);
if (process_sp)
{
if (process_sp->CanDebug(target, false))
{
process_sp->m_process_unique_id = ++g_process_unique_id;
break;
}
else
process_sp.reset();
}
}
}
return process_sp;
}
ConstString &
Process::GetStaticBroadcasterClass ()
{
static ConstString class_name ("lldb.process");
return class_name;
}
//----------------------------------------------------------------------
// Process constructor
//----------------------------------------------------------------------
Process::Process(Target &target, Listener &listener) :
Process(target, listener, Host::GetUnixSignals ())
{
// This constructor just delegates to the full Process constructor,
// defaulting to using the Host's UnixSignals.
}
Process::Process(Target &target, Listener &listener, const UnixSignalsSP &unix_signals_sp) :
ProcessProperties (this),
UserID (LLDB_INVALID_PROCESS_ID),
Broadcaster (&(target.GetDebugger()), "lldb.process"),
m_target (target),
m_public_state (eStateUnloaded),
m_private_state (eStateUnloaded),
m_private_state_broadcaster (NULL, "lldb.process.internal_state_broadcaster"),
m_private_state_control_broadcaster (NULL, "lldb.process.internal_state_control_broadcaster"),
m_private_state_listener ("lldb.process.internal_state_listener"),
m_private_state_control_wait(),
m_mod_id (),
m_process_unique_id(0),
m_thread_index_id (0),
m_thread_id_to_index_id_map (),
m_exit_status (-1),
m_exit_string (),
m_exit_status_mutex(),
m_thread_mutex (Mutex::eMutexTypeRecursive),
m_thread_list_real (this),
m_thread_list (this),
m_extended_thread_list (this),
m_extended_thread_stop_id (0),
m_queue_list (this),
m_queue_list_stop_id (0),
m_notifications (),
m_image_tokens (),
m_listener (listener),
m_breakpoint_site_list (),
m_dynamic_checkers_ap (),
m_unix_signals_sp (unix_signals_sp),
m_abi_sp (),
m_process_input_reader (),
m_stdio_communication ("process.stdio"),
m_stdio_communication_mutex (Mutex::eMutexTypeRecursive),
m_stdin_forward (false),
m_stdout_data (),
m_stderr_data (),
m_profile_data_comm_mutex (Mutex::eMutexTypeRecursive),
m_profile_data (),
m_iohandler_sync (false),
m_memory_cache (*this),
m_allocated_memory_cache (*this),
m_should_detach (false),
m_next_event_action_ap(),
m_public_run_lock (),
m_private_run_lock (),
m_currently_handling_event(false),
m_stop_info_override_callback (NULL),
m_finalize_called(false),
m_clear_thread_plans_on_stop (false),
m_force_next_event_delivery(false),
m_last_broadcast_state (eStateInvalid),
m_destroy_in_process (false),
m_can_jit(eCanJITDontKnow)
{
CheckInWithManager ();
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
if (log)
log->Printf ("%p Process::Process()", static_cast<void*>(this));
if (!m_unix_signals_sp)
m_unix_signals_sp.reset (new UnixSignals ());
SetEventName (eBroadcastBitStateChanged, "state-changed");
SetEventName (eBroadcastBitInterrupt, "interrupt");
SetEventName (eBroadcastBitSTDOUT, "stdout-available");
SetEventName (eBroadcastBitSTDERR, "stderr-available");
SetEventName (eBroadcastBitProfileData, "profile-data-available");
m_private_state_control_broadcaster.SetEventName (eBroadcastInternalStateControlStop , "control-stop" );
m_private_state_control_broadcaster.SetEventName (eBroadcastInternalStateControlPause , "control-pause" );
m_private_state_control_broadcaster.SetEventName (eBroadcastInternalStateControlResume, "control-resume");
listener.StartListeningForEvents (this,
eBroadcastBitStateChanged |
eBroadcastBitInterrupt |
eBroadcastBitSTDOUT |
eBroadcastBitSTDERR |
eBroadcastBitProfileData);
m_private_state_listener.StartListeningForEvents(&m_private_state_broadcaster,
eBroadcastBitStateChanged |
eBroadcastBitInterrupt);
m_private_state_listener.StartListeningForEvents(&m_private_state_control_broadcaster,
eBroadcastInternalStateControlStop |
eBroadcastInternalStateControlPause |
eBroadcastInternalStateControlResume);
// We need something valid here, even if just the default UnixSignalsSP.
assert (m_unix_signals_sp && "null m_unix_signals_sp after initialization");
}
//----------------------------------------------------------------------
// Destructor
//----------------------------------------------------------------------
Process::~Process()
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_OBJECT));
if (log)
log->Printf ("%p Process::~Process()", static_cast<void*>(this));
StopPrivateStateThread();
// ThreadList::Clear() will try to acquire this process's mutex, so
// explicitly clear the thread list here to ensure that the mutex
// is not destroyed before the thread list.
m_thread_list.Clear();
}
const ProcessPropertiesSP &
Process::GetGlobalProperties()
{
static ProcessPropertiesSP g_settings_sp;
if (!g_settings_sp)
g_settings_sp.reset (new ProcessProperties (NULL));
return g_settings_sp;
}
void
Process::Finalize()
{
switch (GetPrivateState())
{
case eStateConnected:
case eStateAttaching:
case eStateLaunching:
case eStateStopped:
case eStateRunning:
case eStateStepping:
case eStateCrashed:
case eStateSuspended:
if (GetShouldDetach())
{
// FIXME: This will have to be a process setting:
bool keep_stopped = false;
Detach(keep_stopped);
}
else
Destroy();
break;
case eStateInvalid:
case eStateUnloaded:
case eStateDetached:
case eStateExited:
break;
}
// Clear our broadcaster before we proceed with destroying
Broadcaster::Clear();
// Do any cleanup needed prior to being destructed... Subclasses
// that override this method should call this superclass method as well.
// We need to destroy the loader before the derived Process class gets destroyed
// since it is very likely that undoing the loader will require access to the real process.
m_dynamic_checkers_ap.reset();
m_abi_sp.reset();
m_os_ap.reset();
m_system_runtime_ap.reset();
m_dyld_ap.reset();
m_jit_loaders_ap.reset();
m_thread_list_real.Destroy();
m_thread_list.Destroy();
m_extended_thread_list.Destroy();
m_queue_list.Clear();
m_queue_list_stop_id = 0;
std::vector<Notifications> empty_notifications;
m_notifications.swap(empty_notifications);
m_image_tokens.clear();
m_memory_cache.Clear();
m_allocated_memory_cache.Clear();
m_language_runtimes.clear();
m_instrumentation_runtimes.clear();
m_next_event_action_ap.reset();
m_stop_info_override_callback = NULL;
//#ifdef LLDB_CONFIGURATION_DEBUG
// StreamFile s(stdout, false);
// EventSP event_sp;
// while (m_private_state_listener.GetNextEvent(event_sp))
// {
// event_sp->Dump (&s);
// s.EOL();
// }
//#endif
// We have to be very careful here as the m_private_state_listener might
// contain events that have ProcessSP values in them which can keep this
// process around forever. These events need to be cleared out.
m_private_state_listener.Clear();
m_public_run_lock.TrySetRunning(); // This will do nothing if already locked
m_public_run_lock.SetStopped();
m_private_run_lock.TrySetRunning(); // This will do nothing if already locked
m_private_run_lock.SetStopped();
m_finalize_called = true;
}
void
Process::RegisterNotificationCallbacks (const Notifications& callbacks)
{
m_notifications.push_back(callbacks);
if (callbacks.initialize != NULL)
callbacks.initialize (callbacks.baton, this);
}
bool
Process::UnregisterNotificationCallbacks(const Notifications& callbacks)
{
std::vector<Notifications>::iterator pos, end = m_notifications.end();
for (pos = m_notifications.begin(); pos != end; ++pos)
{
if (pos->baton == callbacks.baton &&
pos->initialize == callbacks.initialize &&
pos->process_state_changed == callbacks.process_state_changed)
{
m_notifications.erase(pos);
return true;
}
}
return false;
}
void
Process::SynchronouslyNotifyStateChanged (StateType state)
{
std::vector<Notifications>::iterator notification_pos, notification_end = m_notifications.end();
for (notification_pos = m_notifications.begin(); notification_pos != notification_end; ++notification_pos)
{
if (notification_pos->process_state_changed)
notification_pos->process_state_changed (notification_pos->baton, this, state);
}
}
// FIXME: We need to do some work on events before the general Listener sees them.
// For instance if we are continuing from a breakpoint, we need to ensure that we do
// the little "insert real insn, step & stop" trick. But we can't do that when the
// event is delivered by the broadcaster - since that is done on the thread that is
// waiting for new events, so if we needed more than one event for our handling, we would
// stall. So instead we do it when we fetch the event off of the queue.
//
StateType
Process::GetNextEvent (EventSP &event_sp)
{
StateType state = eStateInvalid;
if (m_listener.GetNextEventForBroadcaster (this, event_sp) && event_sp)
state = Process::ProcessEventData::GetStateFromEvent (event_sp.get());
return state;
}
bool
Process::SyncIOHandler (uint64_t timeout_msec)
{
bool timed_out = false;
// don't sync (potentially context switch) in case where there is no process IO
if (m_process_input_reader)
{
TimeValue timeout = TimeValue::Now();
timeout.OffsetWithMicroSeconds(timeout_msec*1000);
m_iohandler_sync.WaitForValueEqualTo(true, &timeout, &timed_out);
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS));
if(log)
{
if(timed_out)
log->Printf ("Process::%s pid %" PRIu64 " (timeout=%" PRIu64 "ms): FAIL", __FUNCTION__, GetID (), timeout_msec);
else
log->Printf ("Process::%s pid %" PRIu64 ": SUCCESS", __FUNCTION__, GetID ());
}
// reset sync one-shot so it will be ready for next launch
m_iohandler_sync.SetValue(false, eBroadcastNever);
}
return !timed_out;
}
StateType
Process::WaitForProcessToStop (const TimeValue *timeout,
EventSP *event_sp_ptr,
bool wait_always,
Listener *hijack_listener,
Stream *stream)
{
// We can't just wait for a "stopped" event, because the stopped event may have restarted the target.
// We have to actually check each event, and in the case of a stopped event check the restarted flag
// on the event.
if (event_sp_ptr)
event_sp_ptr->reset();
StateType state = GetState();
// If we are exited or detached, we won't ever get back to any
// other valid state...
if (state == eStateDetached || state == eStateExited)
return state;
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_PROCESS));
if (log)
log->Printf ("Process::%s (timeout = %p)", __FUNCTION__,