sysdeps/mach/htl/pt-stack-alloc.c

   1 /* Allocate a new stack.  Mach version.
   2    Copyright (C) 2000-2024 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 #include <errno.h>
  20
  21 #include <mach.h>
  22
  23 #include <pt-internal.h>
  24
  25 /* Allocate a new stack of size STACKSIZE.  If successful, store the
  26    address of the newly allocated stack in *STACKADDR and return 0.
  27    Otherwise return an error code (EINVAL for an invalid stack size,
  28    EAGAIN if the system lacked the necessary resources to allocate a
  29    new stack).  */
  30 int
  31 __pthread_stack_alloc (void **stackaddr, size_t stacksize)
  32 {
  33   error_t err;
  34
  35   err = __vm_allocate (__mach_task_self (), (vm_offset_t *) stackaddr,
  36                        stacksize, TRUE);
  37
  38   if (err == KERN_NO_SPACE)
  39     err = EAGAIN;
  40   return err;
  41 }