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llvm/lldb/source/API/SBDebugger.cpp
Greg Clayton 2d4edfbc6a Modified all logging calls to hand out shared pointers to make sure we 
don't crash if we disable logging when some code already has a copy of the
logger. Prior to this fix, logs were handed out as pointers and if they were
held onto while a log got disabled, then it could cause a crash. Now all logs
are handed out as shared pointers so this problem shouldn't happen anymore.
We are also using our new shared pointers that put the shared pointer count
and the object into the same allocation for a tad better performance.

llvm-svn: 118319
2010-11-06 01:53:30 +00:00

840 lines
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//===-- SBDebugger.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/API/SBDebugger.h"
#include "lldb/lldb-include.h"
#include "lldb/API/SBListener.h"
#include "lldb/API/SBBroadcaster.h"
#include "lldb/API/SBCommandInterpreter.h"
#include "lldb/API/SBCommandReturnObject.h"
#include "lldb/API/SBEvent.h"
#include "lldb/API/SBFrame.h"
#include "lldb/API/SBInputReader.h"
#include "lldb/API/SBProcess.h"
#include "lldb/API/SBSourceManager.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBStringList.h"
#include "lldb/API/SBTarget.h"
#include "lldb/API/SBThread.h"
#include "lldb/Core/Debugger.h"
#include "lldb/Core/State.h"
#include "lldb/Interpreter/Args.h"
#include "lldb/Interpreter/CommandInterpreter.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/TargetList.h"
using namespace lldb;
using namespace lldb_private;
void
SBDebugger::Initialize ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger::Initialize ()");
Debugger::Initialize();
}
void
SBDebugger::Terminate ()
{
Debugger::Terminate();
}
void
SBDebugger::Clear ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::Clear ()", m_opaque_sp.get());
m_opaque_sp.reset();
}
SBDebugger
SBDebugger::Create()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
SBDebugger debugger;
debugger.reset(Debugger::CreateInstance());
if (log)
{
SBStream sstr;
debugger.GetDescription (sstr);
log->Printf ("SBDebugger::Create () => SBDebugger(%p): %s", debugger.m_opaque_sp.get(), sstr.GetData());
}
return debugger;
}
SBDebugger::SBDebugger () :
m_opaque_sp ()
{
}
SBDebugger::SBDebugger(const SBDebugger &rhs) :
m_opaque_sp (rhs.m_opaque_sp)
{
}
SBDebugger &
SBDebugger::operator = (const SBDebugger &rhs)
{
if (this != &rhs)
{
m_opaque_sp = rhs.m_opaque_sp;
}
return *this;
}
SBDebugger::~SBDebugger ()
{
}
bool
SBDebugger::IsValid() const
{
return m_opaque_sp.get() != NULL;
}
void
SBDebugger::SetAsync (bool b)
{
if (m_opaque_sp)
m_opaque_sp->SetAsyncExecution(b);
}
void
SBDebugger::SkipLLDBInitFiles (bool b)
{
if (m_opaque_sp)
m_opaque_sp->GetCommandInterpreter().SkipLLDBInitFiles (b);
}
// Shouldn't really be settable after initialization as this could cause lots of problems; don't want users
// trying to switch modes in the middle of a debugging session.
void
SBDebugger::SetInputFileHandle (FILE *fh, bool transfer_ownership)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::SetInputFileHandle (fh=%p, transfer_ownership=%i)", m_opaque_sp.get(),
fh, transfer_ownership);
if (m_opaque_sp)
m_opaque_sp->SetInputFileHandle (fh, transfer_ownership);
}
void
SBDebugger::SetOutputFileHandle (FILE *fh, bool transfer_ownership)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::SetOutputFileHandle (fh=%p, transfer_ownership=%i)", m_opaque_sp.get(),
fh, transfer_ownership);
if (m_opaque_sp)
m_opaque_sp->SetOutputFileHandle (fh, transfer_ownership);
}
void
SBDebugger::SetErrorFileHandle (FILE *fh, bool transfer_ownership)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::SetErrorFileHandle (fh=%p, transfer_ownership=%i)", m_opaque_sp.get(),
fh, transfer_ownership);
if (m_opaque_sp)
m_opaque_sp->SetErrorFileHandle (fh, transfer_ownership);
}
FILE *
SBDebugger::GetInputFileHandle ()
{
if (m_opaque_sp)
return m_opaque_sp->GetInputFileHandle();
return NULL;
}
FILE *
SBDebugger::GetOutputFileHandle ()
{
if (m_opaque_sp)
return m_opaque_sp->GetOutputFileHandle();
return NULL;
}
FILE *
SBDebugger::GetErrorFileHandle ()
{
if (m_opaque_sp)
return m_opaque_sp->GetErrorFileHandle();
return NULL;
}
SBCommandInterpreter
SBDebugger::GetCommandInterpreter ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
SBCommandInterpreter sb_interpreter;
if (m_opaque_sp)
sb_interpreter.reset (&m_opaque_sp->GetCommandInterpreter());
if (log)
log->Printf ("SBDebugger(%p)::GetCommandInterpreter () => SBCommandInterpreter(%p)",
m_opaque_sp.get(), sb_interpreter.get());
return sb_interpreter;
}
void
SBDebugger::HandleCommand (const char *command)
{
if (m_opaque_sp)
{
SBCommandInterpreter sb_interpreter(GetCommandInterpreter ());
SBCommandReturnObject result;
sb_interpreter.HandleCommand (command, result, false);
if (GetErrorFileHandle() != NULL)
result.PutError (GetErrorFileHandle());
if (GetOutputFileHandle() != NULL)
result.PutOutput (GetOutputFileHandle());
if (m_opaque_sp->GetAsyncExecution() == false)
{
SBProcess process(GetCommandInterpreter().GetProcess ());
if (process.IsValid())
{
EventSP event_sp;
Listener &lldb_listener = m_opaque_sp->GetListener();
while (lldb_listener.GetNextEventForBroadcaster (process.get(), event_sp))
{
SBEvent event(event_sp);
HandleProcessEvent (process, event, GetOutputFileHandle(), GetErrorFileHandle());
}
}
}
}
}
SBListener
SBDebugger::GetListener ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
SBListener sb_listener;
if (m_opaque_sp)
sb_listener.reset(&m_opaque_sp->GetListener(), false);
if (log)
log->Printf ("SBDebugger(%p)::GetListener () => SBListener(%p)", m_opaque_sp.get(),
sb_listener.get());
return sb_listener;
}
void
SBDebugger::HandleProcessEvent (const SBProcess &process, const SBEvent &event, FILE *out, FILE *err)
{
const uint32_t event_type = event.GetType();
char stdio_buffer[1024];
size_t len;
if (event_type & Process::eBroadcastBitSTDOUT)
{
while ((len = process.GetSTDOUT (stdio_buffer, sizeof (stdio_buffer))) > 0)
if (out != NULL)
::fwrite (stdio_buffer, 1, len, out);
}
else if (event_type & Process::eBroadcastBitSTDERR)
{
while ((len = process.GetSTDERR (stdio_buffer, sizeof (stdio_buffer))) > 0)
if (out != NULL)
::fwrite (stdio_buffer, 1, len, out);
}
else if (event_type & Process::eBroadcastBitStateChanged)
{
// Drain any stdout messages.
while ((len = process.GetSTDOUT (stdio_buffer, sizeof (stdio_buffer))) > 0)
if (out != NULL)
::fwrite (stdio_buffer, 1, len, out);
// Drain any stderr messages.
while ((len = process.GetSTDERR (stdio_buffer, sizeof (stdio_buffer))) > 0)
if (out != NULL)
::fwrite (stdio_buffer, 1, len, out);
StateType event_state = SBProcess::GetStateFromEvent (event);
if (event_state == eStateInvalid)
return;
bool is_stopped = StateIsStoppedState (event_state);
if (!is_stopped)
process.ReportEventState (event, out);
}
}
void
SBDebugger::UpdateSelectedThread (SBProcess &process)
{
if (process.IsValid())
{
SBThread curr_thread = process.GetSelectedThread ();
SBThread thread;
StopReason curr_thread_stop_reason = eStopReasonInvalid;
if (curr_thread.IsValid())
{
if (curr_thread.GetStopReason() != eStopReasonInvalid)
curr_thread_stop_reason = curr_thread.GetStopReason ();
}
if (! curr_thread.IsValid()
|| curr_thread_stop_reason == eStopReasonInvalid
|| curr_thread_stop_reason == eStopReasonNone)
{
// Prefer a thread that has just completed its plan over another thread as current thread.
SBThread plan_thread;
SBThread other_thread;
const size_t num_threads = process.GetNumThreads ();
size_t i;
for (i = 0; i < num_threads; ++i)
{
thread = process.GetThreadAtIndex(i);
if (thread.GetStopReason () != eStopReasonInvalid)
{
switch (thread.GetStopReason ())
{
default:
case eStopReasonInvalid:
case eStopReasonNone:
break;
case eStopReasonTrace:
case eStopReasonBreakpoint:
case eStopReasonWatchpoint:
case eStopReasonSignal:
case eStopReasonException:
if (! other_thread.IsValid())
other_thread = thread;
break;
case eStopReasonPlanComplete:
if (! plan_thread.IsValid())
plan_thread = thread;
break;
}
}
}
if (plan_thread.IsValid())
process.SetSelectedThreadByID (plan_thread.GetThreadID());
else if (other_thread.IsValid())
process.SetSelectedThreadByID (other_thread.GetThreadID());
else
{
if (curr_thread.IsValid())
thread = curr_thread;
else
thread = process.GetThreadAtIndex(0);
if (thread.IsValid())
process.SetSelectedThreadByID (thread.GetThreadID());
}
}
}
}
SBSourceManager &
SBDebugger::GetSourceManager ()
{
static SourceManager g_lldb_source_manager;
static SBSourceManager g_sb_source_manager (&g_lldb_source_manager);
return g_sb_source_manager;
}
bool
SBDebugger::GetDefaultArchitecture (char *arch_name, size_t arch_name_len)
{
if (arch_name && arch_name_len)
{
ArchSpec default_arch = lldb_private::Target::GetDefaultArchitecture ();
if (default_arch.IsValid())
{
::snprintf (arch_name, arch_name_len, "%s", default_arch.AsCString());
return true;
}
}
if (arch_name && arch_name_len)
arch_name[0] = '\0';
return false;
}
bool
SBDebugger::SetDefaultArchitecture (const char *arch_name)
{
if (arch_name)
{
ArchSpec arch (arch_name);
if (arch.IsValid())
{
lldb_private::Target::SetDefaultArchitecture (arch);
return true;
}
}
return false;
}
ScriptLanguage
SBDebugger::GetScriptingLanguage (const char *script_language_name)
{
return Args::StringToScriptLanguage (script_language_name,
eScriptLanguageDefault,
NULL);
}
const char *
SBDebugger::GetVersionString ()
{
return lldb_private::GetVersion();
}
const char *
SBDebugger::StateAsCString (lldb::StateType state)
{
return lldb_private::StateAsCString (state);
}
bool
SBDebugger::StateIsRunningState (lldb::StateType state)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
const bool result = lldb_private::StateIsRunningState (state);
if (log)
log->Printf ("SBDebugger::StateIsRunningState (state=%s) => %i",
lldb_private::StateAsCString (state), result);
return result;
}
bool
SBDebugger::StateIsStoppedState (lldb::StateType state)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
const bool result = lldb_private::StateIsStoppedState (state);
if (log)
log->Printf ("SBDebugger::StateIsStoppedState (state=%s) => %i",
lldb_private::StateAsCString (state), result);
return result;
}
SBTarget
SBDebugger::CreateTargetWithFileAndTargetTriple (const char *filename,
const char *target_triple)
{
SBTarget target;
if (m_opaque_sp)
{
ArchSpec arch;
FileSpec file_spec (filename, true);
arch.SetArchFromTargetTriple(target_triple);
TargetSP target_sp;
Error error (m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file_spec, arch, NULL, true, target_sp));
target.reset (target_sp);
}
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
{
log->Printf ("SBDebugger(%p)::CreateTargetWithFileAndTargetTriple (filename=\"%s\", triple=%s) => SBTarget(%p)",
m_opaque_sp.get(), filename, target_triple, target.get());
}
return target;
}
SBTarget
SBDebugger::CreateTargetWithFileAndArch (const char *filename, const char *archname)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
SBTarget target;
if (m_opaque_sp)
{
FileSpec file (filename, true);
ArchSpec arch = lldb_private::Target::GetDefaultArchitecture ();
TargetSP target_sp;
Error error;
if (archname != NULL)
{
ArchSpec arch2 (archname);
error = m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file, arch2, NULL, true, target_sp);
}
else
{
if (!arch.IsValid())
arch = LLDB_ARCH_DEFAULT;
error = m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file, arch, NULL, true, target_sp);
if (error.Fail())
{
if (arch == LLDB_ARCH_DEFAULT_32BIT)
arch = LLDB_ARCH_DEFAULT_64BIT;
else
arch = LLDB_ARCH_DEFAULT_32BIT;
error = m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file, arch, NULL, true, target_sp);
}
}
if (error.Success())
{
m_opaque_sp->GetTargetList().SetSelectedTarget (target_sp.get());
target.reset(target_sp);
}
}
if (log)
{
log->Printf ("SBDebugger(%p)::CreateTargetWithFileAndArch (filename=\"%s\", arch=%s) => SBTarget(%p)",
m_opaque_sp.get(), filename, archname, target.get());
}
return target;
}
SBTarget
SBDebugger::CreateTarget (const char *filename)
{
SBTarget target;
if (m_opaque_sp)
{
FileSpec file (filename, true);
ArchSpec arch = lldb_private::Target::GetDefaultArchitecture ();
TargetSP target_sp;
Error error;
if (!arch.IsValid())
arch = LLDB_ARCH_DEFAULT;
error = m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file, arch, NULL, true, target_sp);
if (error.Fail())
{
if (arch == LLDB_ARCH_DEFAULT_32BIT)
arch = LLDB_ARCH_DEFAULT_64BIT;
else
arch = LLDB_ARCH_DEFAULT_32BIT;
error = m_opaque_sp->GetTargetList().CreateTarget (*m_opaque_sp, file, arch, NULL, true, target_sp);
}
if (error.Success())
{
m_opaque_sp->GetTargetList().SetSelectedTarget (target_sp.get());
target.reset (target_sp);
}
}
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
{
log->Printf ("SBDebugger(%p)::CreateTarget (filename=\"%s\") => SBTarget(%p)",
m_opaque_sp.get(), filename, target.get());
}
return target;
}
SBTarget
SBDebugger::GetTargetAtIndex (uint32_t idx)
{
SBTarget sb_target;
if (m_opaque_sp)
sb_target.reset(m_opaque_sp->GetTargetList().GetTargetAtIndex (idx));
return sb_target;
}
SBTarget
SBDebugger::FindTargetWithProcessID (pid_t pid)
{
SBTarget sb_target;
if (m_opaque_sp)
sb_target.reset(m_opaque_sp->GetTargetList().FindTargetWithProcessID (pid));
return sb_target;
}
SBTarget
SBDebugger::FindTargetWithFileAndArch (const char *filename, const char *arch_name)
{
SBTarget sb_target;
if (m_opaque_sp && filename && filename[0])
{
ArchSpec arch;
if (arch_name)
arch.SetArch(arch_name);
TargetSP target_sp (m_opaque_sp->GetTargetList().FindTargetWithExecutableAndArchitecture (FileSpec(filename, false), arch_name ? &arch : NULL));
sb_target.reset(target_sp);
}
return sb_target;
}
SBTarget
SBDebugger::FindTargetWithLLDBProcess (const lldb::ProcessSP &process_sp)
{
SBTarget sb_target;
if (m_opaque_sp)
sb_target.reset(m_opaque_sp->GetTargetList().FindTargetWithProcess (process_sp.get()));
return sb_target;
}
uint32_t
SBDebugger::GetNumTargets ()
{
if (m_opaque_sp)
return m_opaque_sp->GetTargetList().GetNumTargets ();
return 0;
}
SBTarget
SBDebugger::GetSelectedTarget ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
SBTarget sb_target;
if (m_opaque_sp)
sb_target.reset(m_opaque_sp->GetTargetList().GetSelectedTarget ());
if (log)
{
SBStream sstr;
sb_target.GetDescription (sstr, lldb::eDescriptionLevelBrief);
log->Printf ("SBDebugger(%p)::GetSelectedTarget () => SBTarget(%p): %s", m_opaque_sp.get(),
sb_target.get(), sstr.GetData());
}
return sb_target;
}
void
SBDebugger::DispatchInput (void *baton, const void *data, size_t data_len)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::DispatchInput (baton=%p, data=\"%.*s\", size_t=%zu)", m_opaque_sp.get(),
baton, (int) data_len, (const char *) data, data_len);
if (m_opaque_sp)
m_opaque_sp->DispatchInput ((const char *) data, data_len);
}
void
SBDebugger::PushInputReader (SBInputReader &reader)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::PushInputReader (SBInputReader(%p))", m_opaque_sp.get(), &reader);
if (m_opaque_sp && reader.IsValid())
{
InputReaderSP reader_sp(*reader);
m_opaque_sp->PushInputReader (reader_sp);
}
}
void
SBDebugger::reset (const lldb::DebuggerSP &debugger_sp)
{
m_opaque_sp = debugger_sp;
}
Debugger *
SBDebugger::get () const
{
return m_opaque_sp.get();
}
Debugger &
SBDebugger::ref () const
{
assert (m_opaque_sp.get());
return *m_opaque_sp;
}
SBDebugger
SBDebugger::FindDebuggerWithID (int id)
{
SBDebugger sb_debugger;
lldb::DebuggerSP debugger_sp = Debugger::FindDebuggerWithID (id);
if (debugger_sp)
sb_debugger.reset (debugger_sp);
return sb_debugger;
}
const char *
SBDebugger::GetInstanceName()
{
if (m_opaque_sp)
return m_opaque_sp->GetInstanceName().AsCString();
else
return NULL;
}
SBError
SBDebugger::SetInternalVariable (const char *var_name, const char *value, const char *debugger_instance_name)
{
lldb::UserSettingsControllerSP root_settings_controller = lldb_private::Debugger::GetSettingsController();
Error err = root_settings_controller->SetVariable (var_name, value, lldb::eVarSetOperationAssign, true,
debugger_instance_name);
SBError sb_error;
sb_error.SetError (err);
return sb_error;
}
lldb::SBStringList
SBDebugger::GetInternalVariableValue (const char *var_name, const char *debugger_instance_name)
{
SBStringList ret_value;
lldb::SettableVariableType var_type;
lldb_private:Error err;
lldb::UserSettingsControllerSP root_settings_controller = lldb_private::Debugger::GetSettingsController();
StringList value = root_settings_controller->GetVariable (var_name, var_type, debugger_instance_name, err);
if (err.Success())
{
for (unsigned i = 0; i != value.GetSize(); ++i)
ret_value.AppendString (value.GetStringAtIndex(i));
}
else
{
ret_value.AppendString (err.AsCString());
}
return ret_value;
}
uint32_t
SBDebugger::GetTerminalWidth () const
{
if (m_opaque_sp)
return m_opaque_sp->GetTerminalWidth ();
return 0;
}
void
SBDebugger::SetTerminalWidth (uint32_t term_width)
{
if (m_opaque_sp)
m_opaque_sp->SetTerminalWidth (term_width);
}
const char *
SBDebugger::GetPrompt() const
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBDebugger(%p)::GetPrompt () => \"%s\"", m_opaque_sp.get(),
(m_opaque_sp ? m_opaque_sp->GetPrompt() : ""));
if (m_opaque_sp)
return m_opaque_sp->GetPrompt ();
return 0;
}
void
SBDebugger::SetPrompt (const char *prompt)
{
if (m_opaque_sp)
m_opaque_sp->SetPrompt (prompt);
}
lldb::ScriptLanguage
SBDebugger::GetScriptLanguage() const
{
if (m_opaque_sp)
return m_opaque_sp->GetScriptLanguage ();
return eScriptLanguageNone;
}
void
SBDebugger::SetScriptLanguage (lldb::ScriptLanguage script_lang)
{
if (m_opaque_sp)
m_opaque_sp->SetScriptLanguage (script_lang);
}
bool
SBDebugger::SetUseExternalEditor (bool value)
{
if (m_opaque_sp)
return m_opaque_sp->SetUseExternalEditor (value);
else
return false;
}
bool
SBDebugger::GetUseExternalEditor ()
{
if (m_opaque_sp)
return m_opaque_sp->GetUseExternalEditor ();
else
return false;
}
bool
SBDebugger::GetDescription (SBStream &description)
{
if (m_opaque_sp)
{
const char *name = m_opaque_sp->GetInstanceName().AsCString();
lldb::user_id_t id = m_opaque_sp->GetID();
description.Printf ("Debugger (instance: \"%s\", id: %d)", name, id);
}
else
description.Printf ("No value");
return true;
}
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