llvm-project/lldb/source/API/SBBroadcaster.cpp
Jim Ingham 583bbb1dd4 Change over the broadcaster/listener process to hold shared or weak pointers
to each other.  This should remove some infrequent teardown crashes when the
listener is not the debugger's listener.

Processes now need to take a ListenerSP, not a Listener&.

This required changing over the Process plugin class constructors to take a ListenerSP, instead
of a Listener&.   Other than that there should be no functional change.
 
<rdar://problem/24580184> CrashTracer: [USER] Xcode at …ework: lldb_private::Listener::BroadcasterWillDestruct + 39

llvm-svn: 262863
2016-03-07 21:50:25 +00:00

203 lines
5.0 KiB
C++

//===-- SBBroadcaster.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/Core/Broadcaster.h"
#include "lldb/Core/Log.h"
#include "lldb/API/SBBroadcaster.h"
#include "lldb/API/SBListener.h"
#include "lldb/API/SBEvent.h"
using namespace lldb;
using namespace lldb_private;
SBBroadcaster::SBBroadcaster () :
m_opaque_sp (),
m_opaque_ptr (NULL)
{
}
SBBroadcaster::SBBroadcaster (const char *name) :
m_opaque_sp (new Broadcaster (NULL, name)),
m_opaque_ptr (NULL)
{
m_opaque_ptr = m_opaque_sp.get();
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API | LIBLLDB_LOG_VERBOSE));
if (log)
log->Printf ("SBBroadcaster::SBBroadcaster (name=\"%s\") => SBBroadcaster(%p)",
name, static_cast<void*>(m_opaque_ptr));
}
SBBroadcaster::SBBroadcaster (lldb_private::Broadcaster *broadcaster, bool owns) :
m_opaque_sp (owns ? broadcaster : NULL),
m_opaque_ptr (broadcaster)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API | LIBLLDB_LOG_VERBOSE));
if (log)
log->Printf ("SBBroadcaster::SBBroadcaster (broadcaster=%p, bool owns=%i) => SBBroadcaster(%p)",
static_cast<void*>(broadcaster), owns,
static_cast<void*>(m_opaque_ptr));
}
SBBroadcaster::SBBroadcaster (const SBBroadcaster &rhs) :
m_opaque_sp (rhs.m_opaque_sp),
m_opaque_ptr (rhs.m_opaque_ptr)
{
}
const SBBroadcaster &
SBBroadcaster::operator = (const SBBroadcaster &rhs)
{
if (this != &rhs)
{
m_opaque_sp = rhs.m_opaque_sp;
m_opaque_ptr = rhs.m_opaque_ptr;
}
return *this;
}
SBBroadcaster::~SBBroadcaster()
{
reset (NULL, false);
}
void
SBBroadcaster::BroadcastEventByType (uint32_t event_type, bool unique)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBroadcaster(%p)::BroadcastEventByType (event_type=0x%8.8x, unique=%i)",
static_cast<void*>(m_opaque_ptr), event_type, unique);
if (m_opaque_ptr == NULL)
return;
if (unique)
m_opaque_ptr->BroadcastEventIfUnique (event_type);
else
m_opaque_ptr->BroadcastEvent (event_type);
}
void
SBBroadcaster::BroadcastEvent (const SBEvent &event, bool unique)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBroadcaster(%p)::BroadcastEventByType (SBEvent(%p), unique=%i)",
static_cast<void*>(m_opaque_ptr),
static_cast<void*>(event.get()), unique);
if (m_opaque_ptr == NULL)
return;
EventSP event_sp = event.GetSP ();
if (unique)
m_opaque_ptr->BroadcastEventIfUnique (event_sp);
else
m_opaque_ptr->BroadcastEvent (event_sp);
}
void
SBBroadcaster::AddInitialEventsToListener (const SBListener &listener, uint32_t requested_events)
{
Log *log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
log->Printf ("SBBroadcaster(%p)::AddInitialEventsToListener (SBListener(%p), event_mask=0x%8.8x)",
static_cast<void*>(m_opaque_ptr),
static_cast<void*>(listener.get()), requested_events);
if (m_opaque_ptr)
m_opaque_ptr->AddInitialEventsToListener (listener.m_opaque_sp, requested_events);
}
uint32_t
SBBroadcaster::AddListener (const SBListener &listener, uint32_t event_mask)
{
if (m_opaque_ptr)
return m_opaque_ptr->AddListener (listener.m_opaque_sp, event_mask);
return 0;
}
const char *
SBBroadcaster::GetName () const
{
if (m_opaque_ptr)
return m_opaque_ptr->GetBroadcasterName().GetCString();
return NULL;
}
bool
SBBroadcaster::EventTypeHasListeners (uint32_t event_type)
{
if (m_opaque_ptr)
return m_opaque_ptr->EventTypeHasListeners (event_type);
return false;
}
bool
SBBroadcaster::RemoveListener (const SBListener &listener, uint32_t event_mask)
{
if (m_opaque_ptr)
return m_opaque_ptr->RemoveListener (listener.m_opaque_sp, event_mask);
return false;
}
Broadcaster *
SBBroadcaster::get () const
{
return m_opaque_ptr;
}
void
SBBroadcaster::reset (Broadcaster *broadcaster, bool owns)
{
if (owns)
m_opaque_sp.reset (broadcaster);
else
m_opaque_sp.reset ();
m_opaque_ptr = broadcaster;
}
bool
SBBroadcaster::IsValid () const
{
return m_opaque_ptr != NULL;
}
void
SBBroadcaster::Clear ()
{
m_opaque_sp.reset();
m_opaque_ptr = NULL;
}
bool
SBBroadcaster::operator == (const SBBroadcaster &rhs) const
{
return m_opaque_ptr == rhs.m_opaque_ptr;
}
bool
SBBroadcaster::operator != (const SBBroadcaster &rhs) const
{
return m_opaque_ptr != rhs.m_opaque_ptr;
}
bool
SBBroadcaster::operator < (const SBBroadcaster &rhs) const
{
return m_opaque_ptr < rhs.m_opaque_ptr;
}