erts: Prepare erl_mmap with tree structures for free seg storage

1 files changed, 26 insertions, 0 deletions

diff --git a/erts/emulator/sys/common/erl_mmap.h b/erts/emulator/sys/common/erl_mmap.h
new file mode 100644
index 0000000000..64baa6c493
--- /dev/null
+++ b/erts/emulator/sys/common/erl_mmap.h
@@ -0,0 +1,26 @@
+/*
+ * %CopyrightBegin%
+ *
+ * Copyright Ericsson AB 2002-2013. 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%
+ */
+
+typedef struct {
+    SWord scs;  /* super carrier size */
+    int sco;    /* super carrier only? */
+    Uint scmgc; /* super carrier: max guaranteed (number of) carriers */
+}ErtsMMapInit;
+
+void erts_mmap_init(ErtsMMapInit*);