New dmnsn_new_thread() function.

Two advantages: first, waiters are guaranteed to wake if a dmnsn_error()
cancels a thread.  Second, the thread library is fully abstracted over by
threads.{c,h} and progress.{c,h} now, though raytrace.c is still using
pthread_create() directly.

1 files changed, 32 insertions, 0 deletions

diff --git a/libdimension/threads.h b/libdimension/threads.h
new file mode 100644
index 0000000..5884fae
--- /dev/null
+++ b/libdimension/threads.h
@@ -0,0 +1,32 @@
+/*************************************************************************
+ * Copyright (C) 2010 Tavian Barnes <tavianator@gmail.com>               *
+ *                                                                       *
+ * This file is part of The Dimension Library.                           *
+ *                                                                       *
+ * The Dimension 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 3 of the *
+ * License, or (at your option) any later version.                       *
+ *                                                                       *
+ * The Dimension 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 program.  If not, see                         *
+ * <http://www.gnu.org/licenses/>.                                       *
+ *************************************************************************/
+
+#ifndef DIMENSION_IMPL_THREADS_H
+#define DIMENSION_IMPL_THREADS_H
+
+#include <pthread.h>
+
+typedef int dmnsn_thread_fn(void *ptr);
+
+/* Creates a thread that cleans up after itself on errors */
+int dmnsn_new_thread(dmnsn_progress *progress, const pthread_attr_t *attr,
+                     dmnsn_thread_fn *thread_fn, void *arg);
+
+#endif /* DIMENSION_IMPL_THREADS_H */