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ofpbuf: New functions ofpbuf_use_stub() and ofpbuf_get_uninit_pointer().

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Signed-off-by: Ben Pfaff <blp@nicira.com>
This commit is contained in:
Ben Pfaff
2012-04-17 21:55:27 -07:00
parent 3de9590b77
commit cca408daa5
2 changed files with 49 additions and 10 deletions
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7
lib/ofpbuf.h
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@@ -1,5 +1,5 @@
/*
* Copyright (c) 2008, 2009, 2010, 2011 Nicira Networks.
* Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -28,7 +28,8 @@ extern "C" {
enum ofpbuf_source {
OFPBUF_MALLOC, /* Obtained via malloc(). */
OFPBUF_STACK /* Stack space or static buffer. */
OFPBUF_STACK, /* Un-movable stack space or static buffer. */
OFPBUF_STUB /* Starts on stack, may expand into heap. */
};
/* Buffer for holding arbitrary data. An ofpbuf is automatically reallocated
@@ -56,10 +57,12 @@ struct ofpbuf {
void ofpbuf_use(struct ofpbuf *, void *, size_t);
void ofpbuf_use_stack(struct ofpbuf *, void *, size_t);
void ofpbuf_use_stub(struct ofpbuf *, void *, size_t);
void ofpbuf_use_const(struct ofpbuf *, const void *, size_t);
void ofpbuf_init(struct ofpbuf *, size_t);
void ofpbuf_uninit(struct ofpbuf *);
void *ofpbuf_get_uninit_pointer(struct ofpbuf *);
void ofpbuf_reinit(struct ofpbuf *, size_t);
struct ofpbuf *ofpbuf_new(size_t);