def acquire_maybe_in_new_thread():
if not we_are_translated():
return acquire()
from rpython.rlib import rthread
rthread.get_or_make_ident(
) #make sure that the threadlocals are initialized
_gil_acquire()
rthread.gc_thread_run()
_after_thread_switch()
def thread_run():
"""Called whenever the current thread (re-)acquired the GIL.
This should ensure that the shadow stack installed in
gcdata.root_stack_top/root_stack_base is the one corresponding
to the current thread.
No GC operation here, e.g. no mallocs or storing in a dict!
Note that here specifically we don't call rthread.get_ident(),
but rthread.get_or_make_ident(). We are possibly in a fresh
new thread, so we need to be careful.
"""
tid = rthread.get_or_make_ident()
if gcdata.active_tid != tid:
switch_shadow_stacks(tid)
def thread_run():
"""Called whenever the current thread (re-)acquired the GIL.
This should ensure that the shadow stack installed in
gcdata.root_stack_top/root_stack_base is the one corresponding
to the current thread.
No GC operation here, e.g. no mallocs or storing in a dict!
Note that here specifically we don't call rthread.get_ident(),
but rthread.get_or_make_ident(). We are possibly in a fresh
new thread, so we need to be careful.
"""
tid = rthread.get_or_make_ident()
if gcdata.active_tid != tid:
switch_shadow_stacks(tid)
def am_I_holding_the_GIL():
from rpython.rlib import rthread
my_tid = rthread.get_or_make_ident()
return gil_get_holder() == my_tid
