1 files changed, 66 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_async.h b/erts/emulator/beam/erl_async.h
new file mode 100644
index 0000000000..95374a8fc9
--- /dev/null
+++ b/erts/emulator/beam/erl_async.h
@@ -0,0 +1,66 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2011. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ *
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ *
+ * %CopyrightEnd%
+ */
+
+#ifndef ERL_ASYNC_H__
+#define ERL_ASYNC_H__
+
+#define ERTS_MAX_NO_OF_ASYNC_THREADS 1024
+extern int erts_async_max_threads;
+#define ERTS_ASYNC_THREAD_MIN_STACK_SIZE 16	/* Kilo words */
+#define ERTS_ASYNC_THREAD_MAX_STACK_SIZE 8192	/* Kilo words */
+extern int erts_async_thread_suggested_stack_size;
+
+#ifdef USE_THREADS
+
+#ifdef ERTS_SMP
+/*
+ * With smp support we can choose to have, or not to
+ * have an async ready queue.
+ */
+#define ERTS_USE_ASYNC_READY_Q 1
+#endif
+
+#ifndef ERTS_SMP
+/* In non-smp case we *need* the async ready queue */
+#  undef ERTS_USE_ASYNC_READY_Q
+#  define ERTS_USE_ASYNC_READY_Q 1
+#endif
+
+#ifndef ERTS_USE_ASYNC_READY_Q
+#  define ERTS_USE_ASYNC_READY_Q 0
+#endif
+
+#if ERTS_USE_ASYNC_READY_Q
+int erts_check_async_ready(void *);
+int erts_async_ready_clean(void *, void *);
+void *erts_get_async_ready_queue(Uint sched_id);
+#define ERTS_ASYNC_READY_CLEAN 0
+#define ERTS_ASYNC_READY_DIRTY 1
+#ifdef ERTS_SMP
+#define ERTS_ASYNC_READY_NEED_THR_PRGR 2
+#endif
+#endif /* ERTS_USE_ASYNC_READY_Q */
+
+#endif /* USE_THREADS */
+
+void erts_init_async(void);
+void erts_exit_flush_async(void);
+
+
+#endif /* ERL_ASYNC_H__ */