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50 lines
2.5 KiB
C
50 lines
2.5 KiB
C
/* lmdbgo.h
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* Helper utilities for github.com/bmatsuo/lmdb-go/lmdb. These functions have
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* no compatibility guarantees and may be modified or deleted without warning.
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* */
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#ifndef _MDBXGO_H_
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#define _MDBXGO_H_
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#include "dist/mdbx.h"
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/* Proxy functions for lmdb get/put operations. The functions are defined to
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* take char* values instead of void* to keep cgo from cheking their data for
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* nested pointers and causing a couple of allocations per argument.
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*
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* For more information see github issues for more information about the
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* problem and the decision.
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* https://github.com/golang/go/issues/14387
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* https://github.com/golang/go/issues/15048
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* https://github.com/bmatsuo/lmdb-go/issues/63
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* */
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int mdbxgo_del(MDBX_txn *txn, MDBX_dbi dbi, char *kdata, size_t kn, char *vdata, size_t vn);
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int mdbxgo_get(MDBX_txn *txn, MDBX_dbi dbi, char *kdata, size_t kn, MDBX_val *val);
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int mdbxgo_put1(MDBX_txn *txn, MDBX_dbi dbi, char *kdata, size_t kn, MDBX_val *val, MDBX_put_flags_t flags);
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int mdbxgo_put2(MDBX_txn *txn, MDBX_dbi dbi, char *kdata, size_t kn, char *vdata, size_t vn, MDBX_put_flags_t flags);
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int mdbxgo_cursor_put1(MDBX_cursor *cur, char *kdata, size_t kn, MDBX_val *val, MDBX_put_flags_t flags);
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int mdbxgo_cursor_put2(MDBX_cursor *cur, char *kdata, size_t kn, char *vdata, size_t vn, MDBX_put_flags_t flags);
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int mdbxgo_cursor_putmulti(MDBX_cursor *cur, char *kdata, size_t kn, char *vdata, size_t vn, size_t vstride, MDBX_put_flags_t flags);
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int mdbxgo_cursor_get1(MDBX_cursor *cur, char *kdata, size_t kn, MDBX_val *key, MDBX_val *val, MDBX_cursor_op op);
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int mdbxgo_cursor_get2(MDBX_cursor *cur, char *kdata, size_t kn, char *vdata, size_t vn, MDBX_val *key, MDBX_val *val, MDBX_cursor_op op);
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/* ConstCString wraps a null-terminated (const char *) because Go's type system
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* does not represent the 'cosnt' qualifier directly on a function argument and
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* causes warnings to be emitted during linking.
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* */
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typedef struct{ const char *p; } mdbxgo_ConstCString;
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/* mdbxgo_reader_list is a proxy for mdb_reader_list that uses a special
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* mdb_msg_func proxy function to relay messages over the
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* mdbxgo_reader_list_bridge external Go func.
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* */
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int mdbxgo_reader_list(MDBX_env *env, size_t ctx);
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int mdbxgo_set_dupsort_cmp_exclude_suffix32(MDBX_txn *txn, MDBX_dbi dbi);
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int mdbxgo_cmp(MDBX_txn *txn, MDBX_dbi dbi, char *adata, size_t an, char *bdata, size_t bn);
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int mdbxgo_dcmp(MDBX_txn *txn, MDBX_dbi dbi, char *adata, size_t an, char *bdata, size_t bn);
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MDBX_cmp_func *mdbxgo_get_cmp_exclude_suffix32();
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#endif
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