From a416ab17ecf9f2cb0f1e3f7bd645a8d1ce690ca2 Mon Sep 17 00:00:00 2001
From: rpj <rpj>
Date: Mon, 18 Feb 2002 03:16:52 +0000
Subject: Major reorganisation of source code; new routine and tests added.

---
 cancel_cancel.c | 180 --------------------------------------------------------
 1 file changed, 180 deletions(-)
 delete mode 100644 cancel_cancel.c

(limited to 'cancel_cancel.c')

diff --git a/cancel_cancel.c b/cancel_cancel.c
deleted file mode 100644
index c0ab552..0000000
--- a/cancel_cancel.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * cancel_cancel.c
- *
- * Description:
- * POSIX thread functions related to thread cancellation.
- *
- * --------------------------------------------------------------------------
- *
- *      Pthreads-win32 - POSIX Threads Library for Win32
- *      Copyright(C) 1998 John E. Bossom
- *      Copyright(C) 1999,2002 Pthreads-win32 contributors
- *
- *      Contact Email: rpj@ise.canberra.edu.au
- *
- *      The current list of contributors is contained
- *      in the file CONTRIBUTORS included with the source
- *      code distribution. The list can also be seen at the
- *      following World Wide Web location:
- *      http://sources.redhat.com/pthreads-win32/contributors.html
- *
- *      This library is free software; you can redistribute it and/or
- *      modify it under the terms of the GNU Lesser General Public
- *      License as published by the Free Software Foundation; either
- *      version 2 of the License, or (at your option) any later version.
- *
- *      This library 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
- *      Lesser General Public License for more details.
- *
- *      You should have received a copy of the GNU Lesser General Public
- *      License along with this library in the file COPYING.LIB;
- *      if not, write to the Free Software Foundation, Inc.,
- *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
- */
-
-#include "pthread.h"
-#include "implement.h"
-
-
-#if defined(_M_IX86) || defined(_X86_)
-#define PTW32_PROGCTR(Context)  ((Context).Eip)
-#endif
-
-#if defined(_MIPS_)
-#define PTW32_PROGCTR(Context)  ((Context).Fir)
-#endif
-
-#if defined(_ALPHA_)
-#define PTW32_PROGCTR(Context)  ((Context).Fir)
-#endif
-
-#if defined(_PPC_)
-#define PTW32_PROGCTR(Context)  ((Context).Iar)
-#endif
-
-#if !defined(PTW32_PROGCTR)
-#error Module contains CPU-specific code; modify and recompile.
-#endif
-
-static INLINE void
-ptw32_cancel_self(void)
-{
-  ptw32_throw(PTW32_EPS_CANCEL);
-
-  /* Never reached */
-}
-
-int
-pthread_cancel (pthread_t thread)
-     /*
-      * ------------------------------------------------------
-      * DOCPUBLIC
-      *      This function requests cancellation of 'thread'.
-      *
-      * PARAMETERS
-      *      thread
-      *              reference to an instance of pthread_t
-      *
-      *
-      * DESCRIPTION
-      *      This function requests cancellation of 'thread'.
-      *      NOTE: cancellation is asynchronous; use pthread_join to
-      *                wait for termination of 'thread' if necessary.
-      *
-      * RESULTS
-      *              0               successfully requested cancellation,
-      *              ESRCH           no thread found corresponding to 'thread',
-      *              ENOMEM          implicit self thread create failed.
-      * ------------------------------------------------------
-      */
-{
-  int result;
-  int cancel_self;
-  pthread_t self;
-
-  if (thread == NULL )
-    {
-      return ESRCH;
-    }
-
-  result = 0;
-  if ((self = pthread_self()) == NULL)
-    {
-      return ENOMEM;
-    };
-
-  /*
-   * FIXME!!
-   *
-   * Can a thread cancel itself?
-   *
-   * The standard doesn't
-   * specify an error to be returned if the target
-   * thread is itself.
-   *
-   * If it may, then we need to ensure that a thread can't
-   * deadlock itself trying to cancel itself asyncronously
-   * (pthread_cancel is required to be an async-cancel
-   * safe function).
-   */
-  cancel_self = pthread_equal(thread, self);
-
-  /*
-   * Lock for async-cancel safety.
-   */
-  (void) pthread_mutex_lock(&thread->cancelLock);
-
-  if (thread->cancelType == PTHREAD_CANCEL_ASYNCHRONOUS
-      && thread->cancelState == PTHREAD_CANCEL_ENABLE
-      && thread->state < PThreadStateCanceling )
-    {
-      if (cancel_self)
-        {
-          thread->state = PThreadStateCanceling;
-          thread->cancelState = PTHREAD_CANCEL_DISABLE;
-
-          (void) pthread_mutex_unlock(&thread->cancelLock);
-          ptw32_throw(PTW32_EPS_CANCEL);
-
-          /* Never reached */
-        }
-      else
-        {
-          HANDLE threadH = thread->threadH;
-
-          SuspendThread(threadH);
-
-          if (WaitForSingleObject(threadH, 0) == WAIT_TIMEOUT )
-            {
-              CONTEXT context;
-
-              thread->state = PThreadStateCanceling;
-              thread->cancelState = PTHREAD_CANCEL_DISABLE;
-              context.ContextFlags = CONTEXT_CONTROL;
-              GetThreadContext(threadH, &context);
-              PTW32_PROGCTR(context) = (DWORD) ptw32_cancel_self;
-              SetThreadContext(threadH, &context);
-              (void) pthread_mutex_unlock(&thread->cancelLock);
-              ResumeThread(threadH);
-            }
-        }
-    }
-  else
-    {
-      /*
-       * Set for deferred cancellation.
-       */
-      if ( thread->state >= PThreadStateCanceling
-           || !SetEvent (thread->cancelEvent))
-        {
-          result = ESRCH;
-        }
-
-      (void) pthread_mutex_unlock(&thread->cancelLock);
-    }
-
-  return (result);
-}
-
-- 
cgit v1.2.3