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mdbx: drop obsolete/unused mn_hi & mn_lo.

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Change-Id: Ie0099c5afa66ccb679b124f3feb095a364519edc
This commit is contained in:
Leonid Yuriev 2020-05-08 02:28:40 +03:00
parent db635c9fbb
commit 86dad2d727
1 changed files with 0 additions and 11 deletions
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11
src/internals.h
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@ -1235,11 +1235,6 @@ MDBX_INTERNAL_FUNC void mdbx_rthc_thread_dtor(void *ptr);
* Used in pages of type P_BRANCH and P_LEAF without P_LEAF2. * Used in pages of type P_BRANCH and P_LEAF without P_LEAF2.
* We guarantee 2-byte alignment for 'MDBX_node's. * We guarantee 2-byte alignment for 'MDBX_node's.
* *
* mn_lo and mn_hi are used for data size on leaf nodes, and for child
* pgno on branch nodes. On 64 bit platforms, mn_flags is also used
* for pgno. (Branch nodes have no flags). Lo and hi are in host byte
* order in case some accesses can be optimized to 32-bit word access.
*
* Leaf node flags describe node contents. F_BIGDATA says the node's * Leaf node flags describe node contents. F_BIGDATA says the node's
* data part is the page number of an overflow page with actual data. * data part is the page number of an overflow page with actual data.
* F_DUPDATA and F_SUBDATA can be combined giving duplicate data in * F_DUPDATA and F_SUBDATA can be combined giving duplicate data in
@ -1247,9 +1242,6 @@ MDBX_INTERNAL_FUNC void mdbx_rthc_thread_dtor(void *ptr);
typedef struct MDBX_node { typedef struct MDBX_node {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ #if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
union { union {
struct {
uint16_t mn_lo, mn_hi; /* part of data size or pgno */
};
uint32_t mn_dsize; uint32_t mn_dsize;
uint32_t mn_pgno32; uint32_t mn_pgno32;
}; };
@ -1263,9 +1255,6 @@ typedef struct MDBX_node {
union { union {
uint32_t mn_pgno32; uint32_t mn_pgno32;
uint32_t mn_dsize; uint32_t mn_dsize;
struct {
uint16_t mn_hi, mn_lo; /* part of data size or pgno */
};
}; };
#endif /* __BYTE_ORDER__ */ #endif /* __BYTE_ORDER__ */