summary refs log tree commit diff
path: root/linuxthreads/specific.c
diff options
context:
space:
mode:
Diffstat (limited to 'linuxthreads/specific.c')
-rw-r--r--linuxthreads/specific.c241
1 files changed, 0 insertions, 241 deletions
diff --git a/linuxthreads/specific.c b/linuxthreads/specific.c
deleted file mode 100644
index 92eec3d99a..0000000000
--- a/linuxthreads/specific.c
+++ /dev/null
@@ -1,241 +0,0 @@
-/* Linuxthreads - a simple clone()-based implementation of Posix        */
-/* threads for Linux.                                                   */
-/* Copyright (C) 1996 Xavier Leroy (Xavier.Leroy@inria.fr)              */
-/*                                                                      */
-/* This program is free software; you can redistribute it and/or        */
-/* modify it under the terms of the GNU Library General Public License  */
-/* as published by the Free Software Foundation; either version 2       */
-/* of the License, or (at your option) any later version.               */
-/*                                                                      */
-/* This program is distributed in the hope that it will be useful,      */
-/* but WITHOUT ANY WARRANTY; without even the implied warranty of       */
-/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        */
-/* GNU Library General Public License for more details.                 */
-
-/* Thread-specific data */
-
-#include <errno.h>
-#include <stddef.h>
-#include <stdlib.h>
-#include "pthread.h"
-#include "internals.h"
-#include "spinlock.h"
-#include "restart.h"
-#include <bits/libc-lock.h>
-#include <not-cancel.h>
-
-/* Table of keys. */
-
-static struct pthread_key_struct pthread_keys[PTHREAD_KEYS_MAX] =
-  { { 0, NULL } };
-
-/* For debugging purposes put the maximum number of keys in a variable.  */
-const int __linuxthreads_pthread_keys_max = PTHREAD_KEYS_MAX;
-const int __linuxthreads_pthread_key_2ndlevel_size = PTHREAD_KEY_2NDLEVEL_SIZE;
-
-/* Mutex to protect access to pthread_keys */
-
-static pthread_mutex_t pthread_keys_mutex = PTHREAD_MUTEX_INITIALIZER;
-
-/* Create a new key */
-
-int __pthread_key_create(pthread_key_t * key, destr_function destr)
-{
-  int i;
-
-  pthread_mutex_lock(&pthread_keys_mutex);
-  for (i = 0; i < PTHREAD_KEYS_MAX; i++) {
-    if (! pthread_keys[i].in_use) {
-      /* Mark key in use */
-      pthread_keys[i].in_use = 1;
-      pthread_keys[i].destr = destr;
-      pthread_mutex_unlock(&pthread_keys_mutex);
-      *key = i;
-      return 0;
-    }
-  }
-  pthread_mutex_unlock(&pthread_keys_mutex);
-  return EAGAIN;
-}
-strong_alias (__pthread_key_create, pthread_key_create)
-
-/* Reset deleted key's value to NULL in each live thread.
- * NOTE: this executes in the context of the thread manager! */
-
-struct pthread_key_delete_helper_args {
-  /* Damn, we need lexical closures in C! ;) */
-  unsigned int idx1st, idx2nd;
-  pthread_descr self;
-};
-
-static void pthread_key_delete_helper(void *arg, pthread_descr th)
-{
-  struct pthread_key_delete_helper_args *args = arg;
-  unsigned int idx1st = args->idx1st;
-  unsigned int idx2nd = args->idx2nd;
-  pthread_descr self = args->self;
-
-  if (self == 0)
-    self = args->self = thread_self();
-
-  if (!th->p_terminated) {
-    /* pthread_exit() may try to free th->p_specific[idx1st] concurrently. */
-    __pthread_lock(th->p_lock, self);
-    if (th->p_specific[idx1st] != NULL)
-      th->p_specific[idx1st][idx2nd] = NULL;
-    __pthread_unlock(th->p_lock);
-  }
-}
-
-/* Delete a key */
-int pthread_key_delete(pthread_key_t key)
-{
-  pthread_descr self = thread_self();
-
-  pthread_mutex_lock(&pthread_keys_mutex);
-  if (key >= PTHREAD_KEYS_MAX || !pthread_keys[key].in_use) {
-    pthread_mutex_unlock(&pthread_keys_mutex);
-    return EINVAL;
-  }
-  pthread_keys[key].in_use = 0;
-  pthread_keys[key].destr = NULL;
-
-  /* Set the value of the key to NULL in all running threads, so
-     that if the key is reallocated later by pthread_key_create, its
-     associated values will be NULL in all threads.
-
-     If no threads have been created yet, clear it just in the
-     current thread.  */
-
-  struct pthread_key_delete_helper_args args;
-  args.idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
-  args.idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
-  if (__pthread_manager_request != -1)
-    {
-      struct pthread_request request;
-
-      args.self = 0;
-
-      request.req_thread = self;
-      request.req_kind = REQ_FOR_EACH_THREAD;
-      request.req_args.for_each.arg = &args;
-      request.req_args.for_each.fn = pthread_key_delete_helper;
-
-      TEMP_FAILURE_RETRY(write_not_cancel(__pthread_manager_request,
-					  (char *) &request, sizeof(request)));
-      suspend(self);
-    }
-  else
-    {
-      if (self->p_specific[args.idx1st] != NULL)
-	self->p_specific[args.idx1st][args.idx2nd] = NULL;
-    }
-
-  pthread_mutex_unlock(&pthread_keys_mutex);
-  return 0;
-}
-
-/* Set the value of a key */
-
-int __pthread_setspecific(pthread_key_t key, const void * pointer)
-{
-  pthread_descr self = thread_self();
-  unsigned int idx1st, idx2nd;
-
-  if (key >= PTHREAD_KEYS_MAX || !pthread_keys[key].in_use)
-    return EINVAL;
-  idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
-  idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
-  if (THREAD_GETMEM_NC(self, p_specific[idx1st]) == NULL) {
-    void *newp = calloc(PTHREAD_KEY_2NDLEVEL_SIZE, sizeof (void *));
-    if (newp == NULL)
-      return ENOMEM;
-    THREAD_SETMEM_NC(self, p_specific[idx1st], newp);
-  }
-  THREAD_GETMEM_NC(self, p_specific[idx1st])[idx2nd] = (void *) pointer;
-  return 0;
-}
-strong_alias (__pthread_setspecific, pthread_setspecific)
-
-/* Get the value of a key */
-
-void * __pthread_getspecific(pthread_key_t key)
-{
-  pthread_descr self = thread_self();
-  unsigned int idx1st, idx2nd;
-
-  if (key >= PTHREAD_KEYS_MAX)
-    return NULL;
-  idx1st = key / PTHREAD_KEY_2NDLEVEL_SIZE;
-  idx2nd = key % PTHREAD_KEY_2NDLEVEL_SIZE;
-  if (THREAD_GETMEM_NC(self, p_specific[idx1st]) == NULL
-      || !pthread_keys[key].in_use)
-    return NULL;
-  return THREAD_GETMEM_NC(self, p_specific[idx1st])[idx2nd];
-}
-strong_alias (__pthread_getspecific, pthread_getspecific)
-
-/* Call the destruction routines on all keys */
-
-void __pthread_destroy_specifics()
-{
-  pthread_descr self = thread_self();
-  int i, j, round, found_nonzero;
-  destr_function destr;
-  void * data;
-
-  for (round = 0, found_nonzero = 1;
-       found_nonzero && round < PTHREAD_DESTRUCTOR_ITERATIONS;
-       round++) {
-    found_nonzero = 0;
-    for (i = 0; i < PTHREAD_KEY_1STLEVEL_SIZE; i++)
-      if (THREAD_GETMEM_NC(self, p_specific[i]) != NULL)
-        for (j = 0; j < PTHREAD_KEY_2NDLEVEL_SIZE; j++) {
-          destr = pthread_keys[i * PTHREAD_KEY_2NDLEVEL_SIZE + j].destr;
-          data = THREAD_GETMEM_NC(self, p_specific[i])[j];
-          if (destr != NULL && data != NULL) {
-            THREAD_GETMEM_NC(self, p_specific[i])[j] = NULL;
-            destr(data);
-            found_nonzero = 1;
-          }
-        }
-  }
-  __pthread_lock(THREAD_GETMEM(self, p_lock), self);
-  for (i = 0; i < PTHREAD_KEY_1STLEVEL_SIZE; i++) {
-    if (THREAD_GETMEM_NC(self, p_specific[i]) != NULL) {
-      free(THREAD_GETMEM_NC(self, p_specific[i]));
-      THREAD_SETMEM_NC(self, p_specific[i], NULL);
-    }
-  }
-  __pthread_unlock(THREAD_GETMEM(self, p_lock));
-}
-
-#if !(USE_TLS && HAVE___THREAD)
-
-/* Thread-specific data for libc. */
-
-int
-__pthread_internal_tsd_set (int key, const void * pointer)
-{
-  pthread_descr self = thread_self();
-
-  THREAD_SETMEM_NC(self, p_libc_specific[key], (void *) pointer);
-  return 0;
-}
-
-void *
-__pthread_internal_tsd_get (int key)
-{
-  pthread_descr self = thread_self();
-
-  return THREAD_GETMEM_NC(self, p_libc_specific[key]);
-}
-
-void ** __attribute__ ((__const__))
-__pthread_internal_tsd_address (int key)
-{
-  pthread_descr self = thread_self();
-  return &self->p_libc_specific[key];
-}
-
-#endif