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Turn the increasingly complex *_CHAIN() macros into functions

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This commit is contained in:
Nick Mathewson 2010-03-30 12:48:56 -04:00
parent b7442f8e83
commit 96865c4783
1 changed files with 52 additions and 44 deletions
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96
buffer.c
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@ -626,53 +626,61 @@ done:
return result;
}
#define ZERO_CHAIN(dst) do { \
ASSERT_EVBUFFER_LOCKED(dst); \
(dst)->first = NULL; \
(dst)->last = NULL; \
(dst)->last_with_datap = &(dst)->first; \
(dst)->total_len = 0; \
} while (0)
static inline void
ZERO_CHAIN(struct evbuffer *dst)
{
ASSERT_EVBUFFER_LOCKED(dst);
dst->first = NULL;
dst->last = NULL;
dst->last_with_datap = &(dst)->first;
dst->total_len = 0;
}
#define COPY_CHAIN(dst, src) do { \
ASSERT_EVBUFFER_LOCKED(dst); \
ASSERT_EVBUFFER_LOCKED(src); \
(dst)->first = (src)->first; \
if ((src)->last_with_datap == &(src)->first) \
(dst)->last_with_datap = &(dst)->first; \
else \
(dst)->last_with_datap = (src)->last_with_datap; \
(dst)->last = (src)->last; \
(dst)->total_len = (src)->total_len; \
} while (0)
static inline void
COPY_CHAIN(struct evbuffer *dst, struct evbuffer *src)
{
ASSERT_EVBUFFER_LOCKED(dst);
ASSERT_EVBUFFER_LOCKED(src);
dst->first = src->first;
if (src->last_with_datap == &src->first)
dst->last_with_datap = &dst->first;
else
dst->last_with_datap = src->last_with_datap;
dst->last = src->last;
dst->total_len = src->total_len;
}
#define APPEND_CHAIN(dst, src) do { \
ASSERT_EVBUFFER_LOCKED(dst); \
ASSERT_EVBUFFER_LOCKED(src); \
(dst)->last->next = (src)->first; \
if ((src)->last_with_datap == &(src)->first) \
(dst)->last_with_datap = &(dst)->last->next; \
else \
(dst)->last_with_datap = (src)->last_with_datap; \
(dst)->last = (src)->last; \
(dst)->total_len += (src)->total_len; \
} while (0)
static void
APPEND_CHAIN(struct evbuffer *dst, struct evbuffer *src)
{
ASSERT_EVBUFFER_LOCKED(dst);
ASSERT_EVBUFFER_LOCKED(src);
dst->last->next = src->first;
if (src->last_with_datap == &src->first)
dst->last_with_datap = &dst->last->next;
else
dst->last_with_datap = src->last_with_datap;
dst->last = src->last;
dst->total_len += src->total_len;
}
#define PREPEND_CHAIN(dst, src) do { \
ASSERT_EVBUFFER_LOCKED(dst); \
ASSERT_EVBUFFER_LOCKED(src); \
(src)->last->next = (dst)->first; \
(dst)->first = (src)->first; \
(dst)->total_len += (src)->total_len; \
if (*(dst)->last_with_datap == NULL) { \
if ((src)->last_with_datap == &(src)->first) \
(dst)->last_with_datap = &(dst)->first; \
else \
(dst)->last_with_datap = (src)->last_with_datap; \
} else if ((dst)->last_with_datap == &(dst)->first) { \
(dst)->last_with_datap = &(src)->last->next; \
} \
} while (0)
static void
PREPEND_CHAIN(struct evbuffer *dst, struct evbuffer *src)
{
ASSERT_EVBUFFER_LOCKED(dst);
ASSERT_EVBUFFER_LOCKED(src);
src->last->next = dst->first;
dst->first = src->first;
dst->total_len += src->total_len;
if (*dst->last_with_datap == NULL) {
if (src->last_with_datap == &(src)->first)
dst->last_with_datap = &dst->first;
else
dst->last_with_datap = src->last_with_datap;
} else if (dst->last_with_datap == &dst->first) {
dst->last_with_datap = &src->last->next;
}
}
int
evbuffer_add_buffer(struct evbuffer *outbuf, struct evbuffer *inbuf)