def new(self, thrd, callback, arg):
self.newthrd = thrd._thrd
self.runfn = callback
self.arg = arg
# make a fresh new clean SUSPSTACK
newsuspstack = lltype.malloc(SUSPSTACK)
newsuspstack.handle = _c.null_handle
self.suspstack = newsuspstack
# Invoke '_new_callback' by closing the stack
#
callback_pieces = llop.gc_detach_callback_pieces(llmemory.Address)
newsuspstack.callback_pieces = callback_pieces
#
h = pypy_asm_stackwalk2(llhelper(FUNCNOARG_P, _new_callback),
alternateanchor)
#
llop.gc_reattach_callback_pieces(lltype.Void, callback_pieces)
return self.get_result_suspstack(h)
def new(self, thrd, callback, arg):
self.newthrd = thrd._thrd
self.runfn = callback
self.arg = arg
# make a fresh new clean SUSPSTACK
rgc.register_custom_trace_hook(SUSPSTACK, lambda_customtrace)
newsuspstack = lltype.malloc(SUSPSTACK)
newsuspstack.handle = _c.null_handle
self.suspstack = newsuspstack
# Invoke '_new_callback' by closing the stack
#
callback_pieces = llop.gc_detach_callback_pieces(llmemory.Address)
newsuspstack.callback_pieces = callback_pieces
#
h = pypy_asm_stackwalk2(llhelper(FUNCNOARG_P, _new_callback),
alternateanchor)
h = rffi.cast(_c.handle, h)
#
llop.gc_reattach_callback_pieces(lltype.Void, callback_pieces)
return self.get_result_suspstack(h)
def switch(self, suspstack):
# Immediately before the switch, 'suspstack' describes the suspended
# state of the *target* of the switch. Then it is theoretically
# freed. In fact what occurs is that we reuse the same 'suspstack'
# object in the target, just after the switch, to store the
# description of where we came from. Then that "other" 'suspstack'
# object is returned.
self.suspstack = suspstack
#
callback_pieces = llop.gc_detach_callback_pieces(llmemory.Address)
old_callback_pieces = suspstack.callback_pieces
suspstack.callback_pieces = callback_pieces
#
h = pypy_asm_stackwalk2(llhelper(FUNCNOARG_P, _switch_callback),
alternateanchor)
#
llop.gc_reattach_callback_pieces(lltype.Void, callback_pieces)
if not h:
self.suspstack.callback_pieces = old_callback_pieces
#
return self.get_result_suspstack(h)
def switch(self, suspstack):
# Immediately before the switch, 'suspstack' describes the suspended
# state of the *target* of the switch. Then it is theoretically
# freed. In fact what occurs is that we reuse the same 'suspstack'
# object in the target, just after the switch, to store the
# description of where we came from. Then that "other" 'suspstack'
# object is returned.
self.suspstack = suspstack
#
callback_pieces = llop.gc_detach_callback_pieces(llmemory.Address)
old_callback_pieces = suspstack.callback_pieces
suspstack.callback_pieces = callback_pieces
#
h = pypy_asm_stackwalk2(llhelper(FUNCNOARG_P, _switch_callback),
alternateanchor)
h = rffi.cast(_c.handle, h)
#
llop.gc_reattach_callback_pieces(lltype.Void, callback_pieces)
if not h:
self.suspstack.callback_pieces = old_callback_pieces
#
return self.get_result_suspstack(h)
