sysdeps/mach/hurd/htl/pt-sysdep.h

   1 /* Internal definitions for pthreads library.
   2    Copyright (C) 2000-2021 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library;  if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #ifndef _PT_SYSDEP_H
  20 #define _PT_SYSDEP_H    1
  21
  22 #include <mach.h>
  23
  24 /* XXX */
  25 #define _POSIX_THREAD_THREADS_MAX       64
  26
  27 /* The default stack size.  */
  28 #define PTHREAD_STACK_DEFAULT   (8 * 1024 * 1024)
  29
  30 #define PTHREAD_SYSDEP_MEMBERS \
  31   thread_t kernel_thread;      \
  32   mach_msg_header_t wakeupmsg;
  33
  34 extern __thread struct __pthread *___pthread_self;
  35 #ifdef DEBUG
  36 #define _pthread_self()                                            \
  37         ({                                                         \
  38           struct __pthread *thread;                                \
  39                                                                    \
  40           assert (__pthread_threads);                              \
  41           thread = ___pthread_self;                                \
  42                                                                    \
  43           assert (thread);                                         \
  44           assert (({ mach_port_t ktid = __mach_thread_self ();     \
  45                      int ok = thread->kernel_thread == ktid;       \
  46                      __mach_port_deallocate (__mach_task_self (), ktid);\
  47                      ok; }));                                      \
  48           thread;                                                  \
  49          })
  50 #else
  51 #define _pthread_self() ___pthread_self
  52 #endif
  53
  54 extern inline void
  55 __attribute__ ((__always_inline__))
  56 __pthread_stack_dealloc (void *stackaddr, size_t stacksize)
  57 {
  58   __vm_deallocate (__mach_task_self (), (vm_offset_t) stackaddr, stacksize);
  59 }
  60
  61 /* Change thread THREAD's program counter to PC if SET_PC is true,
  62    its stack pointer to SP if SET_IP is true, and its thread pointer
  63    to TP if SET_TP is true.  */
  64 extern int __thread_set_pcsptp (thread_t thread,
  65                                 int set_pc, void *pc,
  66                                 int set_sp, void *sp, int set_tp, void *tp);
  67
  68
  69 #endif /* pt-sysdep.h */