nsz Git - musl/blob - src/thread/cancellation.c

   1 #include "pthread_impl.h"
   2
   3 #ifdef __pthread_register_cancel
   4 #undef __pthread_register_cancel
   5 #undef __pthread_unregister_cancel
   6 #undef __pthread_unwind_next
   7 #define __pthread_register_cancel __pthread_register_cancel_3
   8 #define __pthread_unregister_cancel __pthread_unregister_cancel_3
   9 #define __pthread_unwind_next __pthread_unwind_next_3
  10 #endif
  11
  12 static void dummy(struct __ptcb *cb)
  13 {
  14 }
  15 weak_alias(dummy, __pthread_do_unwind);
  16
  17 void __pthread_unwind_next(struct __ptcb *cb)
  18 {
  19         __pthread_do_unwind(cb);
  20 }
  21
  22 void __pthread_register_cancel(struct __ptcb *cb)
  23 {
  24         struct pthread *self = pthread_self();
  25         cb->__next = self->cancelbuf;
  26         self->cancelbuf = cb;
  27 }
  28
  29 void __pthread_unregister_cancel(struct __ptcb *cb)
  30 {
  31         struct pthread *self = __pthread_self();
  32         self->cancelbuf = self->cancelbuf->__next;
  33 }