1  /* Allocate a new stack.  Mach version.
       2     Copyright (C) 2000-2023 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  }