Jim Ingham b842f2ecf0 Make breakpoint names real entities.
When introduced, breakpoint names were just tags that you could
apply to breakpoints that would allow you to refer to a breakpoint
when you couldn't capture the ID, or to refer to a collection of
breakpoints.  

This change makes the names independent holders of breakpoint options
that you can then apply to breakpoints when you add the name to the
breakpoint.  It adds the "breakpoint name configure" command to set
up or reconfigure breakpoint names.  There is also full support for
then in the SB API, including a new SBBreakpointName class.

The connection between the name and the breakpoints
sharing the name remains live, so if you reconfigure the name, all the
breakpoint options all change as well.  This allows a quick way
to share complex breakpoint behavior among a bunch of breakpoints, and
a convenient way to iterate on the set.

You can also create a name from a breakpoint, allowing a quick way
to copy options from one breakpoint to another.

I also added the ability to make hidden and delete/disable protected
names.  When applied to a breakpoint, you will only be able to list,
delete or disable that breakpoint if you refer to it explicitly by ID.

This feature will allow GUI's that need to use breakpoints for their
own purposes to keep their breakpoints from getting accidentally 
disabled or deleted.

<rdar://problem/22094452>

llvm-svn: 313292
2017-09-14 20:22:49 +00:00

333 lines
11 KiB
C++

//===-- SWIG Interface for SBBreakpoint -------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
namespace lldb {
%feature("docstring",
"Represents a logical breakpoint and its associated settings.
For example (from test/functionalities/breakpoint/breakpoint_ignore_count/
TestBreakpointIgnoreCount.py),
def breakpoint_ignore_count_python(self):
'''Use Python APIs to set breakpoint ignore count.'''
exe = os.path.join(os.getcwd(), 'a.out')
# Create a target by the debugger.
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
# Now create a breakpoint on main.c by name 'c'.
breakpoint = target.BreakpointCreateByName('c', 'a.out')
self.assertTrue(breakpoint and
breakpoint.GetNumLocations() == 1,
VALID_BREAKPOINT)
# Get the breakpoint location from breakpoint after we verified that,
# indeed, it has one location.
location = breakpoint.GetLocationAtIndex(0)
self.assertTrue(location and
location.IsEnabled(),
VALID_BREAKPOINT_LOCATION)
# Set the ignore count on the breakpoint location.
location.SetIgnoreCount(2)
self.assertTrue(location.GetIgnoreCount() == 2,
'SetIgnoreCount() works correctly')
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(None, None, os.getcwd())
self.assertTrue(process, PROCESS_IS_VALID)
# Frame#0 should be on main.c:37, frame#1 should be on main.c:25, and
# frame#2 should be on main.c:48.
#lldbutil.print_stacktraces(process)
from lldbutil import get_stopped_thread
thread = get_stopped_thread(process, lldb.eStopReasonBreakpoint)
self.assertTrue(thread != None, 'There should be a thread stopped due to breakpoint')
frame0 = thread.GetFrameAtIndex(0)
frame1 = thread.GetFrameAtIndex(1)
frame2 = thread.GetFrameAtIndex(2)
self.assertTrue(frame0.GetLineEntry().GetLine() == self.line1 and
frame1.GetLineEntry().GetLine() == self.line3 and
frame2.GetLineEntry().GetLine() == self.line4,
STOPPED_DUE_TO_BREAKPOINT_IGNORE_COUNT)
# The hit count for the breakpoint should be 3.
self.assertTrue(breakpoint.GetHitCount() == 3)
process.Continue()
SBBreakpoint supports breakpoint location iteration, for example,
for bl in breakpoint:
print('breakpoint location load addr: %s' % hex(bl.GetLoadAddress()))
print('breakpoint location condition: %s' % hex(bl.GetCondition()))
and rich comparison methods which allow the API program to use,
if aBreakpoint == bBreakpoint:
...
to compare two breakpoints for equality."
) SBBreakpoint;
class SBBreakpoint
{
public:
SBBreakpoint ();
SBBreakpoint (const lldb::SBBreakpoint& rhs);
~SBBreakpoint();
break_id_t
GetID () const;
bool
IsValid() const;
void
ClearAllBreakpointSites ();
lldb::SBBreakpointLocation
FindLocationByAddress (lldb::addr_t vm_addr);
lldb::break_id_t
FindLocationIDByAddress (lldb::addr_t vm_addr);
lldb::SBBreakpointLocation
FindLocationByID (lldb::break_id_t bp_loc_id);
lldb::SBBreakpointLocation
GetLocationAtIndex (uint32_t index);
void
SetEnabled (bool enable);
bool
IsEnabled ();
void
SetOneShot (bool one_shot);
bool
IsOneShot ();
bool
IsInternal ();
uint32_t
GetHitCount () const;
void
SetIgnoreCount (uint32_t count);
uint32_t
GetIgnoreCount () const;
%feature("docstring", "
//--------------------------------------------------------------------------
/// The breakpoint stops only if the condition expression evaluates to true.
//--------------------------------------------------------------------------
") SetCondition;
void
SetCondition (const char *condition);
%feature("docstring", "
//------------------------------------------------------------------
/// Get the condition expression for the breakpoint.
//------------------------------------------------------------------
") GetCondition;
const char *
GetCondition ();
void SetAutoContinue(bool auto_continue);
bool GetAutoContinue();
void
SetThreadID (lldb::tid_t sb_thread_id);
lldb::tid_t
GetThreadID ();
void
SetThreadIndex (uint32_t index);
uint32_t
GetThreadIndex() const;
void
SetThreadName (const char *thread_name);
const char *
GetThreadName () const;
void
SetQueueName (const char *queue_name);
const char *
GetQueueName () const;
%feature("docstring", "
//------------------------------------------------------------------
/// Set the name of the script function to be called when the breakpoint is hit.
//------------------------------------------------------------------
") SetScriptCallbackFunction;
void
SetScriptCallbackFunction (const char *callback_function_name);
%feature("docstring", "
//------------------------------------------------------------------
/// Provide the body for the script function to be called when the breakpoint is hit.
/// The body will be wrapped in a function, which be passed two arguments:
/// 'frame' - which holds the bottom-most SBFrame of the thread that hit the breakpoint
/// 'bpno' - which is the SBBreakpointLocation to which the callback was attached.
///
/// The error parameter is currently ignored, but will at some point hold the Python
/// compilation diagnostics.
/// Returns true if the body compiles successfully, false if not.
//------------------------------------------------------------------
") SetScriptCallbackBody;
SBError
SetScriptCallbackBody (const char *script_body_text);
void SetCommandLineCommands(SBStringList &commands);
bool GetCommandLineCommands(SBStringList &commands);
bool
AddName (const char *new_name);
void
RemoveName (const char *name_to_remove);
bool
MatchesName (const char *name);
void
GetNames (SBStringList &names);
size_t
GetNumResolvedLocations() const;
size_t
GetNumLocations() const;
bool
GetDescription (lldb::SBStream &description);
bool
GetDescription(lldb::SBStream &description, bool include_locations);
bool
operator == (const lldb::SBBreakpoint& rhs);
bool
operator != (const lldb::SBBreakpoint& rhs);
static bool
EventIsBreakpointEvent (const lldb::SBEvent &event);
static lldb::BreakpointEventType
GetBreakpointEventTypeFromEvent (const lldb::SBEvent& event);
static lldb::SBBreakpoint
GetBreakpointFromEvent (const lldb::SBEvent& event);
static lldb::SBBreakpointLocation
GetBreakpointLocationAtIndexFromEvent (const lldb::SBEvent& event, uint32_t loc_idx);
static uint32_t
GetNumBreakpointLocationsFromEvent (const lldb::SBEvent &event_sp);
%pythoncode %{
class locations_access(object):
'''A helper object that will lazily hand out locations for a breakpoint when supplied an index.'''
def __init__(self, sbbreakpoint):
self.sbbreakpoint = sbbreakpoint
def __len__(self):
if self.sbbreakpoint:
return int(self.sbbreakpoint.GetNumLocations())
return 0
def __getitem__(self, key):
if type(key) is int and key < len(self):
return self.sbbreakpoint.GetLocationAtIndex(key)
return None
def get_locations_access_object(self):
'''An accessor function that returns a locations_access() object which allows lazy location access from a lldb.SBBreakpoint object.'''
return self.locations_access (self)
def get_breakpoint_location_list(self):
'''An accessor function that returns a list() that contains all locations in a lldb.SBBreakpoint object.'''
locations = []
accessor = self.get_locations_access_object()
for idx in range(len(accessor)):
locations.append(accessor[idx])
return locations
__swig_getmethods__["locations"] = get_breakpoint_location_list
if _newclass: locations = property(get_breakpoint_location_list, None, doc='''A read only property that returns a list() of lldb.SBBreakpointLocation objects for this breakpoint.''')
__swig_getmethods__["location"] = get_locations_access_object
if _newclass: location = property(get_locations_access_object, None, doc='''A read only property that returns an object that can access locations by index (not location ID) (location = bkpt.location[12]).''')
__swig_getmethods__["id"] = GetID
if _newclass: id = property(GetID, None, doc='''A read only property that returns the ID of this breakpoint.''')
__swig_getmethods__["enabled"] = IsEnabled
__swig_setmethods__["enabled"] = SetEnabled
if _newclass: enabled = property(IsEnabled, SetEnabled, doc='''A read/write property that configures whether this breakpoint is enabled or not.''')
__swig_getmethods__["one_shot"] = IsOneShot
__swig_setmethods__["one_shot"] = SetOneShot
if _newclass: one_shot = property(IsOneShot, SetOneShot, doc='''A read/write property that configures whether this breakpoint is one-shot (deleted when hit) or not.''')
__swig_getmethods__["num_locations"] = GetNumLocations
if _newclass: num_locations = property(GetNumLocations, None, doc='''A read only property that returns the count of locations of this breakpoint.''')
%}
};
class SBBreakpointListImpl;
class LLDB_API SBBreakpointList
{
public:
SBBreakpointList(SBTarget &target);
~SBBreakpointList();
size_t GetSize() const;
SBBreakpoint
GetBreakpointAtIndex(size_t idx);
SBBreakpoint
FindBreakpointByID(lldb::break_id_t);
void Append(const SBBreakpoint &sb_bkpt);
bool AppendIfUnique(const SBBreakpoint &sb_bkpt);
void AppendByID (lldb::break_id_t id);
void Clear();
private:
std::shared_ptr<SBBreakpointListImpl> m_opaque_sp;
};
} // namespace lldb