def rewrite_assembler(self, cpu, operations, gcrefs_output_list):
rewriter = GcRewriterAssembler(self, cpu)
newops = rewriter.rewrite(operations)
# record all GCREFs, because the GC (or Boehm) cannot see them and
# keep them alive if they end up as constants in the assembler
for op in newops:
self._record_constptrs(op, gcrefs_output_list)
return newops
def rewrite_assembler(self, cpu, operations, gcrefs_output_list):
rewriter = GcRewriterAssembler(self, cpu)
newops = rewriter.rewrite(operations)
# the key is an operation that contains a ConstPtr as an argument and
# this ConstPtrs pointer might change as it points to an object that
# can't be made non-moving (e.g. the object is pinned).
ops_with_movable_const_ptr = {}
#
# a list of such not really constant ConstPtrs.
changeable_const_pointers = []
for op in newops:
# record all GCREFs, because the GC (or Boehm) cannot see them and
# keep them alive if they end up as constants in the assembler.
# If such a GCREF can change and we can't make the object it points
# to non-movable, we have to handle it seperatly. Such GCREF's are
# returned as ConstPtrs in 'changeable_const_pointers' and the
# affected operation is returned in 'op_with_movable_const_ptr'.
# For this special case see 'rewrite_changeable_constptrs'.
self._record_constptrs(op, gcrefs_output_list,
ops_with_movable_const_ptr,
changeable_const_pointers)
#
# handle pointers that are not guaranteed to stay the same
if len(ops_with_movable_const_ptr) > 0:
moving_obj_tracker = MovableObjectTracker(
cpu, changeable_const_pointers)
#
if not we_are_translated():
# used for testing
self.last_moving_obj_tracker = moving_obj_tracker
# make sure the array containing the pointers is not collected by
# the GC (or Boehm)
gcrefs_output_list.append(moving_obj_tracker.ptr_array_gcref)
rgc._make_sure_does_not_move(moving_obj_tracker.ptr_array_gcref)
ops = newops
newops = []
for op in ops:
if op in ops_with_movable_const_ptr:
rewritten_ops = self._rewrite_changeable_constptrs(
op, ops_with_movable_const_ptr, moving_obj_tracker)
newops.extend(rewritten_ops)
else:
newops.append(op)
#
return newops
def rewrite_assembler(self, cpu, operations, gcrefs_output_list):
rewriter = GcRewriterAssembler(self, cpu)
newops = rewriter.rewrite(operations)
# the key is an operation that contains a ConstPtr as an argument and
# this ConstPtrs pointer might change as it points to an object that
# can't be made non-moving (e.g. the object is pinned).
ops_with_movable_const_ptr = {}
#
# a list of such not really constant ConstPtrs.
changeable_const_pointers = []
for op in newops:
# record all GCREFs, because the GC (or Boehm) cannot see them and
# keep them alive if they end up as constants in the assembler.
# If such a GCREF can change and we can't make the object it points
# to non-movable, we have to handle it seperatly. Such GCREF's are
# returned as ConstPtrs in 'changeable_const_pointers' and the
# affected operation is returned in 'op_with_movable_const_ptr'.
# For this special case see 'rewrite_changeable_constptrs'.
self._record_constptrs(op, gcrefs_output_list,
ops_with_movable_const_ptr, changeable_const_pointers)
#
# handle pointers that are not guaranteed to stay the same
if len(ops_with_movable_const_ptr) > 0:
moving_obj_tracker = MovableObjectTracker(cpu, changeable_const_pointers)
#
if not we_are_translated():
# used for testing
self.last_moving_obj_tracker = moving_obj_tracker
# make sure the array containing the pointers is not collected by
# the GC (or Boehm)
gcrefs_output_list.append(moving_obj_tracker.ptr_array_gcref)
rgc._make_sure_does_not_move(moving_obj_tracker.ptr_array_gcref)
ops = newops
newops = []
for op in ops:
if op in ops_with_movable_const_ptr:
rewritten_ops = self._rewrite_changeable_constptrs(op,
ops_with_movable_const_ptr, moving_obj_tracker)
newops.extend(rewritten_ops)
else:
newops.append(op)
#
return newops
def rewrite_assembler(self, cpu, operations, gcrefs_output_list):
rewriter = GcRewriterAssembler(self, cpu)
newops = rewriter.rewrite(operations, gcrefs_output_list)
return newops
def rewrite_assembler(self, cpu, operations, gcrefs_output_list):
rewriter = GcRewriterAssembler(self, cpu)
newops = rewriter.rewrite(operations, gcrefs_output_list)
return newops