1 files changed, 52 insertions, 0 deletions
diff --git a/erts/emulator/beam/erl_zlib.h b/erts/emulator/beam/erl_zlib.h
new file mode 100644
index 0000000000..9054a5e428
--- /dev/null
+++ b/erts/emulator/beam/erl_zlib.h
@@ -0,0 +1,52 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 2009. 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%
+ */
+
+/* A sparse wrapper interface around zlib with erts memory allocation. 
+*/
+
+#include <zlib.h>
+
+
+/* Initialize zalloc, zfree and opaque of a z_stream
+*/
+#define erl_zlib_alloc_init(s)              \
+  do { /* 'opaque' not used */              \
+    (s)->zalloc = erl_zlib_zalloc_callback; \
+    (s)->zfree = erl_zlib_zfree_callback;   \
+  } while (0)
+
+/* Use instead of compress
+*/
+#define erl_zlib_compress(dest,destLen,source,sourceLen) \
+    erl_zlib_compress2(dest,destLen,source,sourceLen,Z_DEFAULT_COMPRESSION)
+
+/* Use instead of compress2
+*/
+int ZEXPORT erl_zlib_compress2 (Bytef* dest, uLongf* destLen,
+				const Bytef* source, uLong sourceLen,
+				int level);
+/* Use instead of uncompress
+*/
+int ZEXPORT erl_zlib_uncompress (Bytef* dest, uLongf* destLen,
+				 const Bytef* source, uLong sourceLen);
+
+
+voidpf erl_zlib_zalloc_callback (voidpf,unsigned,unsigned);
+void erl_zlib_zfree_callback (voidpf,voidpf);
+