9 #define BUF_ASSERT_FREE(buf) do { buffer_assert_free((buf), \
10 __FILE__,__LINE__); } \
12 #define BUF_ASSERT_USED(buf) do { buffer_assert_used((buf), \
13 __FILE__,__LINE__); } \
15 #define BUF_ALLOC(buf,own) do { buffer_assert_free((buf),__FILE__,__LINE__); \
16 (buf)->free=False; (buf)->owner=(own); (buf)->start=(buf)->base; \
17 (buf)->size=0; } while(0)
18 #define BUF_FREE(buf) do { (buf)->free=True; } while(0)
20 extern void buffer_assert_free(struct buffer_if
*buffer
, cstring_t file
,
22 extern void buffer_assert_used(struct buffer_if
*buffer
, cstring_t file
,
24 extern void buffer_new(struct buffer_if
*buffer
, int32_t len
);
25 extern void buffer_init(struct buffer_if
*buffer
, int32_t max_start_pad
);
26 extern void buffer_copy(struct buffer_if
*dst
, const struct buffer_if
*src
);
27 extern void *buf_append(struct buffer_if
*buf
, int32_t amount
);
28 extern void *buf_prepend(struct buffer_if
*buf
, int32_t amount
);
29 extern void *buf_unappend(struct buffer_if
*buf
, int32_t amount
);
30 extern void *buf_unprepend(struct buffer_if
*buf
, int32_t amount
);
33 * void BUF_ADD_BYTES(append, struct buffer_if*, const void*, int32_t size);
34 * void BUF_ADD_BYTES(prepend, struct buffer_if*, const void*, int32_t size);
35 * void BUF_GET_BYTES(unappend, struct buffer_if*, void*, int32_t size);
36 * void BUF_GET_BYTES(unprepend, struct buffer_if*, void*, int32_t size);
37 * // all of these evaluate size twice
39 * void BUF_ADD_OBJ(append, struct_buffer_if*, const OBJECT& something);
40 * void BUF_ADD_OBJ(prepend, struct_buffer_if*, const OBJECT& something);
41 * void BUF_GET_OBJ(unappend, struct_buffer_if*, OBJECT& something);
42 * void BUF_GET_OBJ(unprepend, struct_buffer_if*, OBJECT& something);
44 #define BUF_ADD_BYTES(appendprepend, bufp, datap, size) \
45 (buf_un##appendprepend /* ensures we have correct direction */, \
46 memcpy(buf_##appendprepend((bufp),(size)),(datap),(size)))
47 #define BUF_ADD_OBJ(appendprepend, bufp, obj) \
48 BUF_ADD_BYTES(appendprepend,(bufp),&(obj),sizeof((obj)))
49 #define BUF_GET_BYTES(unappendunprepend, bufp, datap, size) \
50 (BUF_GET__DOESNOTEXIST__buf_un##unappendunprepend, \
51 memcpy((datap),buf_##unappendunprepend((bufp),(size)),(size)))
52 #define BUF_GET_OBJ(unappendunprepend, bufp, obj) \
53 BUF_ADD_BYTES(unappendunprepend,&(obj),(bufp),sizeof((obj)))
54 #define BUF_GET__DOESNOTEXIST__buf_ununappend 0
55 #define BUF_GET__DOESNOTEXIST__buf_ununprepend 0
57 static inline int32_t buf_remaining_space(const struct buffer_if
*buf
)
59 return (buf
->base
+ buf
->alloclen
) - (buf
->start
+ buf
->size
);
62 extern void buffer_readonly_view(struct buffer_if
*n
, const void*, int32_t len
);
63 extern void buffer_readonly_clone(struct buffer_if
*n
, const struct buffer_if
*);
64 /* Caller must only use unappend, unprepend et al. on n.
65 * New buffer state (in n) before this can be undefined. After use,
66 * it must NOT be freed. */
68 extern void buf_append_string(struct buffer_if
*buf
, cstring_t s
);
70 extern void read_mpbin(MP_INT
*a
, uint8_t *bin
, int binsize
);
72 extern char *write_mpstring(MP_INT
*a
);
74 extern int32_t write_mpbin(MP_INT
*a
, uint8_t *buffer
, int32_t buflen
);
76 extern struct log_if
*init_log(list_t
*loglist
);
78 extern void send_nak(const struct comm_addr
*dest
, uint32_t our_index
,
79 uint32_t their_index
, uint32_t msgtype
,
80 struct buffer_if
*buf
, const char *logwhy
);
82 extern int consttime_memeq(const void *s1
, const void *s2
, size_t n
);
84 #define MINMAX(ae,be,op) ({ \
85 typeof((ae)) a=(ae); \
86 typeof((be)) b=(be); \
89 #define MAX(a,b) MINMAX((a),(b),>)
90 #define MIN(a,b) MINMAX((a),(b),<)