1*062c5bc4SJason Schmidlapp /*
2*062c5bc4SJason Schmidlapp * pte_tkAssocDestroy.c
3*062c5bc4SJason Schmidlapp *
4*062c5bc4SJason Schmidlapp * Description:
5*062c5bc4SJason Schmidlapp * This translation unit implements routines which are private to
6*062c5bc4SJason Schmidlapp * the implementation and may be used throughout it.
7*062c5bc4SJason Schmidlapp *
8*062c5bc4SJason Schmidlapp * --------------------------------------------------------------------------
9*062c5bc4SJason Schmidlapp *
10*062c5bc4SJason Schmidlapp * Pthreads-embedded (PTE) - POSIX Threads Library for embedded systems
11*062c5bc4SJason Schmidlapp * Copyright(C) 2008 Jason Schmidlapp
12*062c5bc4SJason Schmidlapp *
13*062c5bc4SJason Schmidlapp * Contact Email: jschmidlapp@users.sourceforge.net
14*062c5bc4SJason Schmidlapp *
15*062c5bc4SJason Schmidlapp *
16*062c5bc4SJason Schmidlapp * Based upon Pthreads-win32 - POSIX Threads Library for Win32
17*062c5bc4SJason Schmidlapp * Copyright(C) 1998 John E. Bossom
18*062c5bc4SJason Schmidlapp * Copyright(C) 1999,2005 Pthreads-win32 contributors
19*062c5bc4SJason Schmidlapp *
20*062c5bc4SJason Schmidlapp * Contact Email: rpj@callisto.canberra.edu.au
21*062c5bc4SJason Schmidlapp *
22*062c5bc4SJason Schmidlapp * The original list of contributors to the Pthreads-win32 project
23*062c5bc4SJason Schmidlapp * is contained in the file CONTRIBUTORS.ptw32 included with the
24*062c5bc4SJason Schmidlapp * source code distribution. The list can also be seen at the
25*062c5bc4SJason Schmidlapp * following World Wide Web location:
26*062c5bc4SJason Schmidlapp * http://sources.redhat.com/pthreads-win32/contributors.html
27*062c5bc4SJason Schmidlapp *
28*062c5bc4SJason Schmidlapp * This library is free software; you can redistribute it and/or
29*062c5bc4SJason Schmidlapp * modify it under the terms of the GNU Lesser General Public
30*062c5bc4SJason Schmidlapp * License as published by the Free Software Foundation; either
31*062c5bc4SJason Schmidlapp * version 2 of the License, or (at your option) any later version.
32*062c5bc4SJason Schmidlapp *
33*062c5bc4SJason Schmidlapp * This library is distributed in the hope that it will be useful,
34*062c5bc4SJason Schmidlapp * but WITHOUT ANY WARRANTY; without even the implied warranty of
35*062c5bc4SJason Schmidlapp * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
36*062c5bc4SJason Schmidlapp * Lesser General Public License for more details.
37*062c5bc4SJason Schmidlapp *
38*062c5bc4SJason Schmidlapp * You should have received a copy of the GNU Lesser General Public
39*062c5bc4SJason Schmidlapp * License along with this library in the file COPYING.LIB;
40*062c5bc4SJason Schmidlapp * if not, write to the Free Software Foundation, Inc.,
41*062c5bc4SJason Schmidlapp * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
42*062c5bc4SJason Schmidlapp */
43*062c5bc4SJason Schmidlapp
44*062c5bc4SJason Schmidlapp #include <stdlib.h>
45*062c5bc4SJason Schmidlapp
46*062c5bc4SJason Schmidlapp #include "pthread.h"
47*062c5bc4SJason Schmidlapp #include "implement.h"
48*062c5bc4SJason Schmidlapp
49*062c5bc4SJason Schmidlapp
50*062c5bc4SJason Schmidlapp void
pte_tkAssocDestroy(ThreadKeyAssoc * assoc)51*062c5bc4SJason Schmidlapp pte_tkAssocDestroy (ThreadKeyAssoc * assoc)
52*062c5bc4SJason Schmidlapp /*
53*062c5bc4SJason Schmidlapp * -------------------------------------------------------------------
54*062c5bc4SJason Schmidlapp * This routine releases all resources for the given ThreadKeyAssoc
55*062c5bc4SJason Schmidlapp * once it is no longer being referenced
56*062c5bc4SJason Schmidlapp * ie) either the key or thread has stopped referencing it.
57*062c5bc4SJason Schmidlapp *
58*062c5bc4SJason Schmidlapp * Parameters:
59*062c5bc4SJason Schmidlapp * assoc
60*062c5bc4SJason Schmidlapp * an instance of ThreadKeyAssoc.
61*062c5bc4SJason Schmidlapp * Returns:
62*062c5bc4SJason Schmidlapp * N/A
63*062c5bc4SJason Schmidlapp * -------------------------------------------------------------------
64*062c5bc4SJason Schmidlapp */
65*062c5bc4SJason Schmidlapp {
66*062c5bc4SJason Schmidlapp
67*062c5bc4SJason Schmidlapp /*
68*062c5bc4SJason Schmidlapp * Both key->keyLock and thread->threadLock are locked on
69*062c5bc4SJason Schmidlapp * entry to this routine.
70*062c5bc4SJason Schmidlapp */
71*062c5bc4SJason Schmidlapp if (assoc != NULL)
72*062c5bc4SJason Schmidlapp {
73*062c5bc4SJason Schmidlapp ThreadKeyAssoc * prev, * next;
74*062c5bc4SJason Schmidlapp
75*062c5bc4SJason Schmidlapp /* Remove assoc from thread's keys chain */
76*062c5bc4SJason Schmidlapp prev = assoc->prevKey;
77*062c5bc4SJason Schmidlapp next = assoc->nextKey;
78*062c5bc4SJason Schmidlapp if (prev != NULL)
79*062c5bc4SJason Schmidlapp {
80*062c5bc4SJason Schmidlapp prev->nextKey = next;
81*062c5bc4SJason Schmidlapp }
82*062c5bc4SJason Schmidlapp if (next != NULL)
83*062c5bc4SJason Schmidlapp {
84*062c5bc4SJason Schmidlapp next->prevKey = prev;
85*062c5bc4SJason Schmidlapp }
86*062c5bc4SJason Schmidlapp
87*062c5bc4SJason Schmidlapp if (assoc->thread->keys == assoc)
88*062c5bc4SJason Schmidlapp {
89*062c5bc4SJason Schmidlapp /* We're at the head of the thread's keys chain */
90*062c5bc4SJason Schmidlapp assoc->thread->keys = next;
91*062c5bc4SJason Schmidlapp }
92*062c5bc4SJason Schmidlapp if (assoc->thread->nextAssoc == assoc)
93*062c5bc4SJason Schmidlapp {
94*062c5bc4SJason Schmidlapp /*
95*062c5bc4SJason Schmidlapp * Thread is exiting and we're deleting the assoc to be processed next.
96*062c5bc4SJason Schmidlapp * Hand thread the assoc after this one.
97*062c5bc4SJason Schmidlapp */
98*062c5bc4SJason Schmidlapp assoc->thread->nextAssoc = next;
99*062c5bc4SJason Schmidlapp }
100*062c5bc4SJason Schmidlapp
101*062c5bc4SJason Schmidlapp /* Remove assoc from key's threads chain */
102*062c5bc4SJason Schmidlapp prev = assoc->prevThread;
103*062c5bc4SJason Schmidlapp next = assoc->nextThread;
104*062c5bc4SJason Schmidlapp if (prev != NULL)
105*062c5bc4SJason Schmidlapp {
106*062c5bc4SJason Schmidlapp prev->nextThread = next;
107*062c5bc4SJason Schmidlapp }
108*062c5bc4SJason Schmidlapp if (next != NULL)
109*062c5bc4SJason Schmidlapp {
110*062c5bc4SJason Schmidlapp next->prevThread = prev;
111*062c5bc4SJason Schmidlapp }
112*062c5bc4SJason Schmidlapp
113*062c5bc4SJason Schmidlapp if (assoc->key->threads == assoc)
114*062c5bc4SJason Schmidlapp {
115*062c5bc4SJason Schmidlapp /* We're at the head of the key's threads chain */
116*062c5bc4SJason Schmidlapp assoc->key->threads = next;
117*062c5bc4SJason Schmidlapp }
118*062c5bc4SJason Schmidlapp
119*062c5bc4SJason Schmidlapp free (assoc);
120*062c5bc4SJason Schmidlapp }
121*062c5bc4SJason Schmidlapp
122*062c5bc4SJason Schmidlapp } /* pte_tkAssocDestroy */
123