1 /* TCB deallocation for NPTL.
2    Copyright (C) 2002-2022 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 <nptl-stack.h>
20 #include <pthreadP.h>
21 #include <stdlib.h>
22 
23 void
__nptl_free_tcb(struct pthread * pd)24 __nptl_free_tcb (struct pthread *pd)
25 {
26   /* The thread is exiting now.  */
27   if (atomic_bit_test_set (&pd->cancelhandling, TERMINATED_BIT) == 0)
28     {
29       /* Free TPP data.  */
30       if (pd->tpp != NULL)
31         {
32           struct priority_protection_data *tpp = pd->tpp;
33 
34           pd->tpp = NULL;
35           free (tpp);
36         }
37 
38       /* Queue the stack memory block for reuse and exit the process.  The
39          kernel will signal via writing to the address returned by
40          QUEUE-STACK when the stack is available.  */
41       __nptl_deallocate_stack (pd);
42     }
43 }
44 libc_hidden_def (__nptl_free_tcb)
45