def belongs_to_current_thread(framedata):
# xxx obscure: the answer is Yes if, as a pointer, framedata
# lies between the start of the current stack and the top of it.
stack_start = gcdata.aid2stack.get(get_aid(), llmemory.NULL)
ll_assert(stack_start != llmemory.NULL,
"current thread not found in gcdata.aid2stack!")
stack_stop = llop.stack_current(llmemory.Address)
return (stack_start <= framedata <= stack_stop or
stack_start >= framedata >= stack_stop)
def belongs_to_current_thread(framedata):
# xxx obscure: the answer is Yes if, as a pointer, framedata
# lies between the start of the current stack and the top of it.
stack_start = gcdata.aid2stack.get(get_aid(), llmemory.NULL)
ll_assert(stack_start != llmemory.NULL,
"current thread not found in gcdata.aid2stack!")
stack_stop = llmemory.cast_int_to_adr(
llop.stack_current(lltype.Signed))
return (stack_start <= framedata <= stack_stop
or stack_start >= framedata >= stack_stop)
def stack_almost_full():
"""Return True if the stack is more than 15/16th full."""
if not we_are_translated():
return False
# see stack_check()
current = llop.stack_current(lltype.Signed)
end = _stack_get_end()
length = 15 * (r_uint(_stack_get_length()) >> 4)
ofs = r_uint(end - current)
if ofs <= length:
return False # fine
else:
_stack_too_big_slowpath(current) # this might update the stack end
end = _stack_get_end()
ofs = r_uint(end - current)
return ofs > length
def stack_check():
if not we_are_translated():
return
#
# Load the "current" stack position, or at least some address that
# points close to the current stack head
current = llop.stack_current(lltype.Signed)
#
# Load these variables from C code
end = _stack_get_end()
length = _stack_get_length()
#
# Common case: if 'current' is within [end-length:end], everything
# is fine
ofs = r_uint(end - current)
if ofs <= r_uint(length):
return
#
# Else call the slow path
stack_check_slowpath(current)
def stack_check():
if not we_are_translated():
return
#
# Load the "current" stack position, or at least some address that
# points close to the current stack head
current = llop.stack_current(lltype.Signed)
#
# Load these variables from C code
end = _stack_get_end()
length = _stack_get_length()
#
# Common case: if 'current' is within [end-length:end], everything
# is fine
ofs = r_uint(end - current)
if ofs <= r_uint(length):
return
#
# Else call the slow path
stack_check_slowpath(current)
def thread_start():
value = llmemory.cast_int_to_adr(llop.stack_current(lltype.Signed))
gcdata.aid2stack.setitem(get_aid(), value)
def thread_start():
value = llop.stack_current(llmemory.Address)
gcdata.aid2stack.setitem(get_aid(), value)
def thread_start():
value = llmemory.cast_int_to_adr(llop.stack_current(lltype.Signed))
gcdata.aid2stack.setitem(get_aid(), value)