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Added minimum copy/reference threshold.

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Even if ref_size is given on vrefbuffer's constructor, the minimum size of vrefbuffer::ref_buffer is 10.
Because int64, uint64, and double's msgpack expression size equals 9, and those buffer is allocated on the stack internally.
This commit is contained in:
Takatoshi Kondo
2014-08-08 14:28:03 +09:00
parent dee68403df
commit 0201c21b9a
4 changed files with 163 additions and 28 deletions
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7
src/vrefbuffer.c
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@@ -19,6 +19,8 @@
#include <stdlib.h>
#include <string.h>
#define MSGPACK_PACKER_MAX_BUFFER_SIZE 9
struct msgpack_vrefbuffer_chunk {
struct msgpack_vrefbuffer_chunk* next;
/* data ... */
@@ -28,7 +30,9 @@ bool msgpack_vrefbuffer_init(msgpack_vrefbuffer* vbuf,
size_t ref_size, size_t chunk_size)
{
vbuf->chunk_size = chunk_size;
vbuf->ref_size = ref_size;
vbuf->ref_size =
ref_size > MSGPACK_PACKER_MAX_BUFFER_SIZE + 1 ?
ref_size : MSGPACK_PACKER_MAX_BUFFER_SIZE + 1 ;
size_t nfirst = (sizeof(struct iovec) < 72/2) ?
72 / sizeof(struct iovec) : 8;
@@ -217,4 +221,3 @@ int msgpack_vrefbuffer_migrate(msgpack_vrefbuffer* vbuf, msgpack_vrefbuffer* to)
return 0;
}