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ruby: fixes buffering routine

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frsyuki
2010-06-03 21:51:40 +09:00
parent d4049fe593
commit 9c3ed173b1
1 changed files with 39 additions and 59 deletions
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98
ruby/unpack.c
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@@ -386,90 +386,70 @@ static VALUE MessagePack_Unpacker_stream_set(VALUE self, VALUE val)
}
#ifdef RUBY_VM
# ifndef STR_SHARED
# define STR_SHARED FL_USER2
# endif
# ifndef STR_NOEMBED
# define STR_NOEMBED FL_USER1
# endif
# ifndef STR_ASSOC
# define STR_ASSOC FL_USER3
# endif
# ifndef STR_NOCAPA_P
# define STR_NOCAPA_P(s) (FL_TEST(s,STR_NOEMBED) && FL_ANY(s,STR_SHARED|STR_ASSOC))
# endif
# define NEED_MORE_CAPA(s,size) (!STR_NOCAPA_P(s) && RSTRING(s)->as.heap.aux.capa < size)
#else
# ifndef STR_NOCAPA
# ifndef STR_ASSOC
# define STR_ASSOC FL_USER3
# endif
# ifndef ELTS_SHARED
# define ELTS_SHARED FL_USER2
# endif
# define STR_NOCAPA (ELTS_SHARED|STR_ASSOC)
# endif
# define NEED_MORE_CAPA(s,size) (!FL_TEST(s,STR_NOCAPA) && RSTRING(s)->aux.capa < size)
#endif
static void feed_buffer(msgpack_unpack_t* mp, const char* ptr, size_t len)
static void reserve_buffer(msgpack_unpack_t* mp, size_t require)
{
struct unpack_buffer* buffer = &mp->user.buffer;
if(buffer->size == 0) {
char* tmp = ALLOC_N(char, MSGPACK_UNPACKER_BUFFER_INIT_SIZE);
size_t nsize = MSGPACK_UNPACKER_BUFFER_INIT_SIZE;
while(nsize < require) {
nsize *= 2;
}
char* tmp = ALLOC_N(char, nsize);
buffer->ptr = tmp;
buffer->free = MSGPACK_UNPACKER_BUFFER_INIT_SIZE;
buffer->free = nsize;
buffer->size = 0;
return;
}
} else if(buffer->size <= mp->user.offset) {
if(buffer->size <= mp->user.offset) {
/* clear buffer and rewind offset */
buffer->free += buffer->size;
buffer->size = 0;
mp->user.offset = 0;
}
if(len <= buffer->free) {
/* enough free space: just copy */
memcpy(buffer->ptr+buffer->size, ptr, len);
buffer->size += len;
buffer->free -= len;
if(require <= buffer->free) {
/* enough free space */
return;
}
size_t csize = buffer->size + buffer->free;
size_t nsize = (buffer->size + buffer->free) * 2;
if(mp->user.offset <= buffer->size / 2) {
/* parsed less than half: realloc and copy */
csize *= 2;
while(csize < buffer->size + len) {
csize *= 2;
/* parsed less than half: realloc only */
while(nsize < buffer->size + require) {
nsize *= 2;
}
char* tmp = REALLOC_N(buffer->ptr, char, csize);
memcpy(tmp + buffer->size, ptr, len);
char* tmp = REALLOC_N(buffer->ptr, char, nsize);
buffer->free = nsize - buffer->size;
buffer->ptr = tmp;
buffer->free = csize - buffer->size;
return;
}
size_t not_parsed = buffer->size - mp->user.offset;
if(csize < not_parsed + len) {
/* more buffer size */
csize *= 2;
while(csize < not_parsed + len) {
csize *= 2;
} else {
/* parsed more than half: realloc and move */
size_t not_parsed = buffer->size - mp->user.offset;
while(nsize < not_parsed + require) {
nsize *= 2;
}
char* tmp = REALLOC_N(buffer->ptr, char, csize);
char* tmp = REALLOC_N(buffer->ptr, char, nsize);
memcpy(tmp, tmp + mp->user.offset, not_parsed);
buffer->free = nsize - buffer->size;
buffer->size = not_parsed;
buffer->ptr = tmp;
mp->user.offset = 0;
}
}
memcpy(buffer->ptr+not_parsed, ptr, not_parsed);
buffer->size = not_parsed;
buffer->free = csize - buffer->size;
buffer->ptr = buffer->ptr;
mp->user.offset = 0;
static inline void feed_buffer(msgpack_unpack_t* mp, const char* ptr, size_t len)
{
struct unpack_buffer* buffer = &mp->user.buffer;
if(buffer->free < len) {
reserve_buffer(mp, len);
}
memcpy(buffer->ptr + buffer->size, ptr, len);
buffer->size += len;
buffer->free -= len;
}
/**