add libbthread to main directory for Android from Andrew

[goodguy/cinelerra.git] / cinelerra-5.1 / libbthread-master / pt-cancel.c

diff --git a/cinelerra-5.1/libbthread-master/pt-cancel.c b/cinelerra-5.1/libbthread-master/pt-cancel.c
new file mode 100644 (file)
index 0000000..7683662
--- /dev/null
+++ b/cinelerra-5.1/libbthread-master/pt-cancel.c
@@ -0,0 +1,58 @@
+/* Cancel a thread.
+   Copyright (C) 2002 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library 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.
+
+   The GNU C 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see 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 <pt-internal.h>
+
+#include <errno.h>
+
+int
+pthread_cancel (pthread_t t)
+{
+  int err = 0;
+  struct pthread_internal_t *p = (struct pthread_internal_t*) t;
+       
+       pthread_init();
+       
+  pthread_mutex_lock (&p->cancel_lock);
+  if (p->attr.flags & PTHREAD_ATTR_FLAG_CANCEL_PENDING)
+    {
+      pthread_mutex_unlock (&p->cancel_lock);
+      return 0;
+    }
+    
+  p->attr.flags |= PTHREAD_ATTR_FLAG_CANCEL_PENDING;
+
+  if (!(p->attr.flags & PTHREAD_ATTR_FLAG_CANCEL_ENABLE))
+    {
+      pthread_mutex_unlock (&p->cancel_lock);
+      return 0;
+    }
+
+  if (p->attr.flags & PTHREAD_ATTR_FLAG_CANCEL_ASYNCRONOUS) {
+               pthread_mutex_unlock (&p->cancel_lock);
+    err = __pthread_do_cancel (p);
+       } else {
+               // DEFERRED CANCEL NOT IMPLEMENTED YET
+               pthread_mutex_unlock (&p->cancel_lock);
+       }
+
+  return err;
+}