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5160ce5c72e5f55c2e83ca9914cd0f02e0c5ceb3
clang-p2996/lldb/source/API/SBBreakpoint.cpp
Greg Clayton 5160ce5c72 <rdar://problem/13521159> 
LLDB is crashing when logging is enabled from lldb-perf-clang. This has to do with the global destructor chain as the process and its threads are being torn down.

All logging channels now make one and only one instance that is kept in a global pointer which is never freed. This guarantees that logging can correctly continue as the process tears itself down.

llvm-svn: 178191
2013-03-27 23:08:40 +00:00

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//===-- SBBreakpoint.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/SBBreakpoint.h"
#include "lldb/API/SBBreakpointLocation.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBEvent.h"
#include "lldb/API/SBProcess.h"
#include "lldb/API/SBStream.h"
#include "lldb/API/SBThread.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Breakpoint/StoppointCallbackContext.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Target/ThreadSpec.h"
#include "lldb/lldb-enumerations.h"
using namespace lldb;
using namespace lldb_private;
struct CallbackData
{
SBBreakpoint::BreakpointHitCallback callback;
void *callback_baton;
};
class SBBreakpointCallbackBaton : public Baton
{
public:
SBBreakpointCallbackBaton (SBBreakpoint::BreakpointHitCallback callback, void *baton) :
Baton (new CallbackData)
{
CallbackData *data = (CallbackData *)m_data;
data->callback = callback;
data->callback_baton = baton;
}
virtual ~SBBreakpointCallbackBaton()
{
CallbackData *data = (CallbackData *)m_data;
if (data)
{
delete data;
m_data = NULL;
}
}
};
SBBreakpoint::SBBreakpoint () :
m_opaque_sp ()
{
}
SBBreakpoint::SBBreakpoint (const SBBreakpoint& rhs) :
m_opaque_sp (rhs.m_opaque_sp)
{
}
SBBreakpoint::SBBreakpoint (const lldb::BreakpointSP &bp_sp) :
m_opaque_sp (bp_sp)
{
}
SBBreakpoint::~SBBreakpoint()
{
}
const SBBreakpoint &
SBBreakpoint::operator = (const SBBreakpoint& rhs)
{
if (this != &rhs)
m_opaque_sp = rhs.m_opaque_sp;
return *this;
}
bool
SBBreakpoint::operator == (const lldb::SBBreakpoint& rhs)
{
if (m_opaque_sp && rhs.m_opaque_sp)
return m_opaque_sp.get() == rhs.m_opaque_sp.get();
return false;
}
break_id_t
SBBreakpoint::GetID () const
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
break_id_t break_id = LLDB_INVALID_BREAK_ID;
if (m_opaque_sp)
break_id = m_opaque_sp->GetID();
if (log)
{
if (break_id == LLDB_INVALID_BREAK_ID)
log->Printf ("SBBreakpoint(%p)::GetID () => LLDB_INVALID_BREAK_ID", m_opaque_sp.get());
else
log->Printf ("SBBreakpoint(%p)::GetID () => %u", m_opaque_sp.get(), break_id);
}
return break_id;
}
bool
SBBreakpoint::IsValid() const
{
return (bool) m_opaque_sp;
}
void
SBBreakpoint::ClearAllBreakpointSites ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->ClearAllBreakpointSites ();
}
}
SBBreakpointLocation
SBBreakpoint::FindLocationByAddress (addr_t vm_addr)
{
SBBreakpointLocation sb_bp_location;
if (m_opaque_sp)
{
if (vm_addr != LLDB_INVALID_ADDRESS)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
Address address;
Target &target = m_opaque_sp->GetTarget();
if (target.GetSectionLoadList().ResolveLoadAddress (vm_addr, address) == false)
{
address.SetRawAddress (vm_addr);
}
sb_bp_location.SetLocation (m_opaque_sp->FindLocationByAddress (address));
}
}
return sb_bp_location;
}
break_id_t
SBBreakpoint::FindLocationIDByAddress (addr_t vm_addr)
{
break_id_t break_id = LLDB_INVALID_BREAK_ID;
if (m_opaque_sp && vm_addr != LLDB_INVALID_ADDRESS)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
Address address;
Target &target = m_opaque_sp->GetTarget();
if (target.GetSectionLoadList().ResolveLoadAddress (vm_addr, address) == false)
{
address.SetRawAddress (vm_addr);
}
break_id = m_opaque_sp->FindLocationIDByAddress (address);
}
return break_id;
}
SBBreakpointLocation
SBBreakpoint::FindLocationByID (break_id_t bp_loc_id)
{
SBBreakpointLocation sb_bp_location;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
sb_bp_location.SetLocation (m_opaque_sp->FindLocationByID (bp_loc_id));
}
return sb_bp_location;
}
SBBreakpointLocation
SBBreakpoint::GetLocationAtIndex (uint32_t index)
{
SBBreakpointLocation sb_bp_location;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
sb_bp_location.SetLocation (m_opaque_sp->GetLocationAtIndex (index));
}
return sb_bp_location;
}
void
SBBreakpoint::SetEnabled (bool enable)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetEnabled (enabled=%i)", m_opaque_sp.get(), enable);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->SetEnabled (enable);
}
}
bool
SBBreakpoint::IsEnabled ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
return m_opaque_sp->IsEnabled();
}
else
return false;
}
void
SBBreakpoint::SetOneShot (bool one_shot)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetOneShot (one_shot=%i)", m_opaque_sp.get(), one_shot);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->SetOneShot (one_shot);
}
}
bool
SBBreakpoint::IsOneShot () const
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
return m_opaque_sp->IsOneShot();
}
else
return false;
}
bool
SBBreakpoint::IsInternal ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
return m_opaque_sp->IsInternal();
}
else
return false;
}
void
SBBreakpoint::SetIgnoreCount (uint32_t count)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetIgnoreCount (count=%u)", m_opaque_sp.get(), count);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->SetIgnoreCount (count);
}
}
void
SBBreakpoint::SetCondition (const char *condition)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->SetCondition (condition);
}
}
const char *
SBBreakpoint::GetCondition ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
return m_opaque_sp->GetConditionText ();
}
return NULL;
}
uint32_t
SBBreakpoint::GetHitCount () const
{
uint32_t count = 0;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
count = m_opaque_sp->GetHitCount();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetHitCount () => %u", m_opaque_sp.get(), count);
return count;
}
uint32_t
SBBreakpoint::GetIgnoreCount () const
{
uint32_t count = 0;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
count = m_opaque_sp->GetIgnoreCount();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetIgnoreCount () => %u", m_opaque_sp.get(), count);
return count;
}
void
SBBreakpoint::SetThreadID (tid_t tid)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->SetThreadID (tid);
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetThreadID (tid=0x%4.4" PRIx64 ")", m_opaque_sp.get(), tid);
}
tid_t
SBBreakpoint::GetThreadID ()
{
tid_t tid = LLDB_INVALID_THREAD_ID;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
tid = m_opaque_sp->GetThreadID();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetThreadID () => 0x%4.4" PRIx64, m_opaque_sp.get(), tid);
return tid;
}
void
SBBreakpoint::SetThreadIndex (uint32_t index)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetThreadIndex (%u)", m_opaque_sp.get(), index);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->GetOptions()->GetThreadSpec()->SetIndex (index);
}
}
uint32_t
SBBreakpoint::GetThreadIndex() const
{
uint32_t thread_idx = UINT32_MAX;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptions()->GetThreadSpecNoCreate();
if (thread_spec != NULL)
thread_idx = thread_spec->GetIndex();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetThreadIndex () => %u", m_opaque_sp.get(), thread_idx);
return thread_idx;
}
void
SBBreakpoint::SetThreadName (const char *thread_name)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetThreadName (%s)", m_opaque_sp.get(), thread_name);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->GetOptions()->GetThreadSpec()->SetName (thread_name);
}
}
const char *
SBBreakpoint::GetThreadName () const
{
const char *name = NULL;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptions()->GetThreadSpecNoCreate();
if (thread_spec != NULL)
name = thread_spec->GetName();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetThreadName () => %s", m_opaque_sp.get(), name);
return name;
}
void
SBBreakpoint::SetQueueName (const char *queue_name)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetQueueName (%s)", m_opaque_sp.get(), queue_name);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
m_opaque_sp->GetOptions()->GetThreadSpec()->SetQueueName (queue_name);
}
}
const char *
SBBreakpoint::GetQueueName () const
{
const char *name = NULL;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptions()->GetThreadSpecNoCreate();
if (thread_spec)
name = thread_spec->GetQueueName();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetQueueName () => %s", m_opaque_sp.get(), name);
return name;
}
size_t
SBBreakpoint::GetNumResolvedLocations() const
{
size_t num_resolved = 0;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
num_resolved = m_opaque_sp->GetNumResolvedLocations();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetNumResolvedLocations () => %" PRIu64, m_opaque_sp.get(), (uint64_t)num_resolved);
return num_resolved;
}
size_t
SBBreakpoint::GetNumLocations() const
{
size_t num_locs = 0;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
num_locs = m_opaque_sp->GetNumLocations();
}
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::GetNumLocations () => %" PRIu64, m_opaque_sp.get(), (uint64_t)num_locs);
return num_locs;
}
bool
SBBreakpoint::GetDescription (SBStream &s)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
s.Printf("SBBreakpoint: id = %i, ", m_opaque_sp->GetID());
m_opaque_sp->GetResolverDescription (s.get());
m_opaque_sp->GetFilterDescription (s.get());
const size_t num_locations = m_opaque_sp->GetNumLocations ();
s.Printf(", locations = %" PRIu64, (uint64_t)num_locations);
return true;
}
s.Printf ("No value");
return false;
}
bool
SBBreakpoint::PrivateBreakpointHitCallback
(
void *baton,
StoppointCallbackContext *ctx,
lldb::user_id_t break_id,
lldb::user_id_t break_loc_id
)
{
ExecutionContext exe_ctx (ctx->exe_ctx_ref);
BreakpointSP bp_sp(exe_ctx.GetTargetRef().GetBreakpointList().FindBreakpointByID(break_id));
if (baton && bp_sp)
{
CallbackData *data = (CallbackData *)baton;
lldb_private::Breakpoint *bp = bp_sp.get();
if (bp && data->callback)
{
Process *process = exe_ctx.GetProcessPtr();
if (process)
{
SBProcess sb_process (process->shared_from_this());
SBThread sb_thread;
SBBreakpointLocation sb_location;
assert (bp_sp);
sb_location.SetLocation (bp_sp->FindLocationByID (break_loc_id));
Thread *thread = exe_ctx.GetThreadPtr();
if (thread)
sb_thread.SetThread(thread->shared_from_this());
return data->callback (data->callback_baton,
sb_process,
sb_thread,
sb_location);
}
}
}
return true; // Return true if we should stop at this breakpoint
}
void
SBBreakpoint::SetCallback (BreakpointHitCallback callback, void *baton)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBreakpoint(%p)::SetCallback (callback=%p, baton=%p)", m_opaque_sp.get(), callback, baton);
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetTarget().GetAPIMutex());
BatonSP baton_sp(new SBBreakpointCallbackBaton (callback, baton));
m_opaque_sp->SetCallback (SBBreakpoint::PrivateBreakpointHitCallback, baton_sp, false);
}
}
lldb_private::Breakpoint *
SBBreakpoint::operator->() const
{
return m_opaque_sp.get();
}
lldb_private::Breakpoint *
SBBreakpoint::get() const
{
return m_opaque_sp.get();
}
lldb::BreakpointSP &
SBBreakpoint::operator *()
{
return m_opaque_sp;
}
const lldb::BreakpointSP &
SBBreakpoint::operator *() const
{
return m_opaque_sp;
}
bool
SBBreakpoint::EventIsBreakpointEvent (const lldb::SBEvent &event)
{
return Breakpoint::BreakpointEventData::GetEventDataFromEvent(event.get()) != NULL;
}
BreakpointEventType
SBBreakpoint::GetBreakpointEventTypeFromEvent (const SBEvent& event)
{
if (event.IsValid())
return Breakpoint::BreakpointEventData::GetBreakpointEventTypeFromEvent (event.GetSP());
return eBreakpointEventTypeInvalidType;
}
SBBreakpoint
SBBreakpoint::GetBreakpointFromEvent (const lldb::SBEvent& event)
{
SBBreakpoint sb_breakpoint;
if (event.IsValid())
sb_breakpoint.m_opaque_sp = Breakpoint::BreakpointEventData::GetBreakpointFromEvent (event.GetSP());
return sb_breakpoint;
}
SBBreakpointLocation
SBBreakpoint::GetBreakpointLocationAtIndexFromEvent (const lldb::SBEvent& event, uint32_t loc_idx)
{
SBBreakpointLocation sb_breakpoint_loc;
if (event.IsValid())
sb_breakpoint_loc.SetLocation (Breakpoint::BreakpointEventData::GetBreakpointLocationAtIndexFromEvent (event.GetSP(), loc_idx));
return sb_breakpoint_loc;
}
uint32_t
SBBreakpoint::GetNumBreakpointLocationsFromEvent (const lldb::SBEvent &event)
{
uint32_t num_locations = 0;
if (event.IsValid())
num_locations = (Breakpoint::BreakpointEventData::GetNumBreakpointLocationsFromEvent (event.GetSP()));
return num_locations;
}
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