Files
llvm/lldb/source/API/SBBreakpointLocation.cpp
Greg Clayton e1cd1be6d6 Switching back to using std::tr1::shared_ptr. We originally switched away
due to RTTI worries since llvm and clang don't use RTTI, but I was able to 
switch back with no issues as far as I can tell. Once the RTTI issue wasn't
an issue, we were looking for a way to properly track weak pointers to objects
to solve some of the threading issues we have been running into which naturally
led us back to std::tr1::weak_ptr. We also wanted the ability to make a shared 
pointer from just a pointer, which is also easily solved using the 
std::tr1::enable_shared_from_this class. 

The main reason for this move back is so we can start properly having weak
references to objects. Currently a lldb_private::Thread class has a refrence
to its parent lldb_private::Process. This doesn't work well when we now hand
out a SBThread object that contains a shared pointer to a lldb_private::Thread
as this SBThread can be held onto by external clients and if they end up
using one of these objects we can easily crash.

So the next task is to start adopting std::tr1::weak_ptr where ever it makes
sense which we can do with lldb_private::Debugger, lldb_private::Target,
lldb_private::Process, lldb_private::Thread, lldb_private::StackFrame, and
many more objects now that they are no longer using intrusive ref counted
pointer objects (you can't do std::tr1::weak_ptr functionality with intrusive
pointers).

llvm-svn: 149207
2012-01-29 20:56:30 +00:00

317 lines
7.8 KiB
C++

//===-- SBBreakpointLocation.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/SBBreakpointLocation.h"
#include "lldb/API/SBDefines.h"
#include "lldb/API/SBAddress.h"
#include "lldb/API/SBDebugger.h"
#include "lldb/API/SBStream.h"
#include "lldb/lldb-types.h"
#include "lldb/lldb-defines.h"
#include "lldb/Breakpoint/Breakpoint.h"
#include "lldb/Breakpoint/BreakpointLocation.h"
#include "lldb/Target/ThreadSpec.h"
#include "lldb/Core/Log.h"
#include "lldb/Core/Stream.h"
#include "lldb/Core/StreamFile.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/ThreadSpec.h"
using namespace lldb;
using namespace lldb_private;
SBBreakpointLocation::SBBreakpointLocation () :
m_opaque_sp ()
{
}
SBBreakpointLocation::SBBreakpointLocation (const lldb::BreakpointLocationSP &break_loc_sp) :
m_opaque_sp (break_loc_sp)
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
if (log)
{
SBStream sstr;
GetDescription (sstr, lldb::eDescriptionLevelBrief);
log->Printf ("SBBreakpointLocation::SBBreakpointLocaiton (const lldb::BreakpointLocationsSP &break_loc_sp"
"=%p) => this.sp = %p (%s)", break_loc_sp.get(), m_opaque_sp.get(), sstr.GetData());
}
}
SBBreakpointLocation::SBBreakpointLocation(const SBBreakpointLocation &rhs) :
m_opaque_sp (rhs.m_opaque_sp)
{
}
const SBBreakpointLocation &
SBBreakpointLocation::operator = (const SBBreakpointLocation &rhs)
{
if (this != &rhs)
m_opaque_sp = rhs.m_opaque_sp;
return *this;
}
SBBreakpointLocation::~SBBreakpointLocation ()
{
}
bool
SBBreakpointLocation::IsValid() const
{
return m_opaque_sp.get() != NULL;
}
SBAddress
SBBreakpointLocation::GetAddress ()
{
if (m_opaque_sp)
return SBAddress(&m_opaque_sp->GetAddress());
else
return SBAddress();
}
addr_t
SBBreakpointLocation::GetLoadAddress ()
{
addr_t ret_addr = LLDB_INVALID_ADDRESS;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
ret_addr = m_opaque_sp->GetLoadAddress();
}
return ret_addr;
}
void
SBBreakpointLocation::SetEnabled (bool enabled)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->SetEnabled (enabled);
}
}
bool
SBBreakpointLocation::IsEnabled ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
return m_opaque_sp->IsEnabled();
}
else
return false;
}
uint32_t
SBBreakpointLocation::GetIgnoreCount ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
return m_opaque_sp->GetIgnoreCount();
}
else
return 0;
}
void
SBBreakpointLocation::SetIgnoreCount (uint32_t n)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->SetIgnoreCount (n);
}
}
void
SBBreakpointLocation::SetCondition (const char *condition)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->SetCondition (condition);
}
}
const char *
SBBreakpointLocation::GetCondition ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
return m_opaque_sp->GetConditionText ();
}
return NULL;
}
void
SBBreakpointLocation::SetThreadID (tid_t thread_id)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->SetThreadID (thread_id);
}
}
tid_t
SBBreakpointLocation::GetThreadID ()
{
tid_t tid = LLDB_INVALID_THREAD_ID;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetLocationOptions()->GetThreadSpecNoCreate();
if (thread_spec)
tid = thread_spec->GetTID();
}
return tid;
}
void
SBBreakpointLocation::SetThreadIndex (uint32_t index)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->GetLocationOptions()->GetThreadSpec()->SetIndex (index);
}
}
uint32_t
SBBreakpointLocation::GetThreadIndex() const
{
uint32_t thread_idx = UINT32_MAX;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptionsNoCreate()->GetThreadSpecNoCreate();
if (thread_spec)
thread_idx = thread_spec->GetIndex();
}
return thread_idx;
}
void
SBBreakpointLocation::SetThreadName (const char *thread_name)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->GetLocationOptions()->GetThreadSpec()->SetName (thread_name);
}
}
const char *
SBBreakpointLocation::GetThreadName () const
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptionsNoCreate()->GetThreadSpecNoCreate();
if (thread_spec)
return thread_spec->GetName();
}
return NULL;
}
void
SBBreakpointLocation::SetQueueName (const char *queue_name)
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->GetLocationOptions()->GetThreadSpec()->SetQueueName (queue_name);
}
}
const char *
SBBreakpointLocation::GetQueueName () const
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
const ThreadSpec *thread_spec = m_opaque_sp->GetOptionsNoCreate()->GetThreadSpecNoCreate();
if (thread_spec)
return thread_spec->GetQueueName();
}
return NULL;
}
bool
SBBreakpointLocation::IsResolved ()
{
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
return m_opaque_sp->IsResolved();
}
return false;
}
void
SBBreakpointLocation::SetLocation (const lldb::BreakpointLocationSP &break_loc_sp)
{
// Uninstall the callbacks?
m_opaque_sp = break_loc_sp;
}
bool
SBBreakpointLocation::GetDescription (SBStream &description, DescriptionLevel level)
{
Stream &strm = description.ref();
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
m_opaque_sp->GetDescription (&strm, level);
strm.EOL();
}
else
strm.PutCString ("No value");
return true;
}
SBBreakpoint
SBBreakpointLocation::GetBreakpoint ()
{
LogSP log(lldb_private::GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
//if (log)
// log->Printf ("SBBreakpointLocation::GetBreakpoint ()");
SBBreakpoint sb_bp;
if (m_opaque_sp)
{
Mutex::Locker api_locker (m_opaque_sp->GetBreakpoint().GetTarget().GetAPIMutex());
*sb_bp = m_opaque_sp->GetBreakpoint ().shared_from_this();
}
if (log)
{
SBStream sstr;
sb_bp.GetDescription (sstr);
log->Printf ("SBBreakpointLocation(%p)::GetBreakpoint () => SBBreakpoint(%p) %s",
m_opaque_sp.get(), sb_bp.get(), sstr.GetData());
}
return sb_bp;
}