2.5-18.1

1 files changed, 0 insertions, 234 deletions

diff --git a/linuxthreads/cancel.c b/linuxthreads/cancel.c
deleted file mode 100644
index d8053ca..0000000
--- a/linuxthreads/cancel.c
+++ /dev/null
@@ -1,234 +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 cancellation */
-
-#include <errno.h>
-#include <libc-internal.h>
-#include "pthread.h"
-#include "internals.h"
-#include "spinlock.h"
-#include "restart.h"
-
-#ifdef _STACK_GROWS_DOWN
-# define FRAME_LEFT(frame, other) ((char *) frame >= (char *) other)
-#elif _STACK_GROWS_UP
-# define FRAME_LEFT(frame, other) ((char *) frame <= (char *) other)
-#else
-# error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
-#endif
-
-
-int __pthread_setcancelstate(int state, int * oldstate)
-{
-  pthread_descr self = thread_self();
-  if (state < PTHREAD_CANCEL_ENABLE || state > PTHREAD_CANCEL_DISABLE)
-    return EINVAL;
-  if (oldstate != NULL) *oldstate = THREAD_GETMEM(self, p_cancelstate);
-  THREAD_SETMEM(self, p_cancelstate, state);
-  if (THREAD_GETMEM(self, p_canceled) &&
-      THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE &&
-      THREAD_GETMEM(self, p_canceltype) == PTHREAD_CANCEL_ASYNCHRONOUS)
-    __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME);
-  return 0;
-}
-strong_alias (__pthread_setcancelstate, pthread_setcancelstate);
-
-int __pthread_setcanceltype(int type, int * oldtype)
-{
-  pthread_descr self = thread_self();
-  if (type < PTHREAD_CANCEL_DEFERRED || type > PTHREAD_CANCEL_ASYNCHRONOUS)
-    return EINVAL;
-  if (oldtype != NULL) *oldtype = THREAD_GETMEM(self, p_canceltype);
-  THREAD_SETMEM(self, p_canceltype, type);
-  if (THREAD_GETMEM(self, p_canceled) &&
-      THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE &&
-      THREAD_GETMEM(self, p_canceltype) == PTHREAD_CANCEL_ASYNCHRONOUS)
-    __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME);
-  return 0;
-}
-strong_alias (__pthread_setcanceltype, pthread_setcanceltype);
-
-
-/* The next two functions are similar to pthread_setcanceltype() but
-   more specialized for the use in the cancelable functions like write().
-   They do not need to check parameters etc.  */
-int
-attribute_hidden
-__pthread_enable_asynccancel (void)
-{
-  pthread_descr self = thread_self();
-  int oldtype = THREAD_GETMEM(self, p_canceltype);
-  THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_ASYNCHRONOUS);
-  if (__builtin_expect (THREAD_GETMEM(self, p_canceled), 0) &&
-      THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE)
-    __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME);
-  return oldtype;
-}
-
-void
-internal_function attribute_hidden
-__pthread_disable_asynccancel (int oldtype)
-{
-  pthread_descr self = thread_self();
-  THREAD_SETMEM(self, p_canceltype, oldtype);
-}
-
-
-int pthread_cancel(pthread_t thread)
-{
-  pthread_handle handle = thread_handle(thread);
-  int pid;
-  int dorestart = 0;
-  pthread_descr th;
-  pthread_extricate_if *pextricate;
-  int already_canceled;
-
-  __pthread_lock(&handle->h_lock, NULL);
-  if (invalid_handle(handle, thread)) {
-    __pthread_unlock(&handle->h_lock);
-    return ESRCH;
-  }
-
-  th = handle->h_descr;
-
-  already_canceled = th->p_canceled;
-  th->p_canceled = 1;
-
-  if (th->p_cancelstate == PTHREAD_CANCEL_DISABLE || already_canceled) {
-    __pthread_unlock(&handle->h_lock);
-    return 0;
-  }
-
-  pextricate = th->p_extricate;
-  pid = th->p_pid;
-
-  /* If the thread has registered an extrication interface, then
-     invoke the interface. If it returns 1, then we succeeded in
-     dequeuing the thread from whatever waiting object it was enqueued
-     with. In that case, it is our responsibility to wake it up.
-     And also to set the p_woken_by_cancel flag so the woken thread
-     can tell that it was woken by cancellation. */
-
-  if (pextricate != NULL) {
-    dorestart = pextricate->pu_extricate_func(pextricate->pu_object, th);
-    th->p_woken_by_cancel = dorestart;
-  }
-
-  __pthread_unlock(&handle->h_lock);
-
-  /* If the thread has suspended or is about to, then we unblock it by
-     issuing a restart, instead of a cancel signal. Otherwise we send
-     the cancel signal to unblock the thread from a cancellation point,
-     or to initiate asynchronous cancellation. The restart is needed so
-     we have proper accounting of restarts; suspend decrements the thread's
-     resume count, and restart() increments it.  This also means that suspend's
-     handling of the cancel signal is obsolete. */
-
-  if (dorestart)
-    restart(th);
-  else
-    kill(pid, __pthread_sig_cancel);
-
-  return 0;
-}
-
-void pthread_testcancel(void)
-{
-  pthread_descr self = thread_self();
-  if (THREAD_GETMEM(self, p_canceled)
-      && THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE)
-    __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME);
-}
-
-void _pthread_cleanup_push(struct _pthread_cleanup_buffer * buffer,
-			   void (*routine)(void *), void * arg)
-{
-  pthread_descr self = thread_self();
-  buffer->__routine = routine;
-  buffer->__arg = arg;
-  buffer->__prev = THREAD_GETMEM(self, p_cleanup);
-  if (buffer->__prev != NULL && FRAME_LEFT (buffer, buffer->__prev))
-    buffer->__prev = NULL;
-  THREAD_SETMEM(self, p_cleanup, buffer);
-}
-
-void _pthread_cleanup_pop(struct _pthread_cleanup_buffer * buffer,
-			  int execute)
-{
-  pthread_descr self = thread_self();
-  if (execute) buffer->__routine(buffer->__arg);
-  THREAD_SETMEM(self, p_cleanup, buffer->__prev);
-}
-
-void _pthread_cleanup_push_defer(struct _pthread_cleanup_buffer * buffer,
-				 void (*routine)(void *), void * arg)
-{
-  pthread_descr self = thread_self();
-  buffer->__routine = routine;
-  buffer->__arg = arg;
-  buffer->__canceltype = THREAD_GETMEM(self, p_canceltype);
-  buffer->__prev = THREAD_GETMEM(self, p_cleanup);
-  if (buffer->__prev != NULL && FRAME_LEFT (buffer, buffer->__prev))
-    buffer->__prev = NULL;
-  THREAD_SETMEM(self, p_canceltype, PTHREAD_CANCEL_DEFERRED);
-  THREAD_SETMEM(self, p_cleanup, buffer);
-}
-
-void _pthread_cleanup_pop_restore(struct _pthread_cleanup_buffer * buffer,
-				  int execute)
-{
-  pthread_descr self = thread_self();
-  if (execute) buffer->__routine(buffer->__arg);
-  THREAD_SETMEM(self, p_cleanup, buffer->__prev);
-  THREAD_SETMEM(self, p_canceltype, buffer->__canceltype);
-  if (THREAD_GETMEM(self, p_canceled) &&
-      THREAD_GETMEM(self, p_cancelstate) == PTHREAD_CANCEL_ENABLE &&
-      THREAD_GETMEM(self, p_canceltype) == PTHREAD_CANCEL_ASYNCHRONOUS)
-    __pthread_do_exit(PTHREAD_CANCELED, CURRENT_STACK_FRAME);
-}
-
-void __pthread_perform_cleanup(char *currentframe)
-{
-  pthread_descr self = thread_self();
-  struct _pthread_cleanup_buffer *c = THREAD_GETMEM(self, p_cleanup);
-  struct _pthread_cleanup_buffer *last;
-
-  if (c != NULL)
-    while (FRAME_LEFT (currentframe, c))
-      {
-	last = c;
-	c = c->__prev;
-
-	if (c == NULL || FRAME_LEFT (last, c))
-	  {
-	    c = NULL;
-	    break;
-	  }
-      }
-
-  while (c != NULL)
-    {
-      c->__routine(c->__arg);
-
-      last = c;
-      c = c->__prev;
-
-      if (FRAME_LEFT (last, c))
-	break;
-    }
-
-  /* And the TSD which needs special help.  */
-  __libc_thread_freeres ();
-}