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libfreerdp-utils/stream: minimize the times of memory reallocation.

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This commit is contained in:
Vic Lee 2011-08-12 17:12:57 +08:00
parent 549e0f5b93
commit 7da790a1fa
2 changed files with 5 additions and 5 deletions
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6
include/freerdp/utils/stream.h
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@ -42,10 +42,10 @@ void stream_free(STREAM* stream);
#define stream_detach(_s) memset(_s, 0, sizeof(STREAM))
#define stream_clear(_s) memset(_s->data, 0, _s->size)
void stream_extend(STREAM* stream);
#define stream_check_size(_s,_n) \
void stream_extend(STREAM* stream, int request_size);
#define stream_check_size(_s, _n) \
while (_s->p - _s->data + (_n) > _s->size) \
stream_extend(_s)
stream_extend(_s, _n)
#define stream_get_pos(_s) (_s->p - _s->data)
#define stream_set_pos(_s,_m) _s->p = _s->data + (_m)

4
libfreerdp-utils/stream.c
View File

@ -53,12 +53,12 @@ void stream_free(STREAM* stream)
}
}
void stream_extend(STREAM* stream)
void stream_extend(STREAM* stream, int request_size)
{
int pos;
pos = stream_get_pos(stream);
stream->size <<= 1;
stream->size += (request_size > stream->size ? request_size : stream->size);
stream->data = (uint8*)xrealloc(stream->data, stream->size);
stream_set_pos(stream, pos);
}