ISAR/libmdbx
3
0
Fork 0
mirror of https://github.com/isar/libmdbx.git synced 2025-10-06 01:02:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

mdbx: add MDBX_SET_UPPERBOUND for cursors.

Browse Source 
Resolves https://github.com/erthink/libmdbx/issues/250.
This commit is contained in:
Leonid Yuriev
2021-12-13 03:40:12 +03:00
parent bee5df20fd
commit 4e44dc69f9
2 changed files with 32 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
src/core.c
View File

@@ -14487,7 +14487,7 @@ int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
break;
case MDBX_FIRST_DUP:
mfunc = mdbx_cursor_first;
mmove:
move:
if (unlikely(data == NULL || !(mc->mc_flags & C_INITIALIZED)))
return MDBX_EINVAL;
if (unlikely(mc->mc_xcursor == NULL))
@@ -14515,7 +14515,8 @@ int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
break;
case MDBX_LAST_DUP:
mfunc = mdbx_cursor_last;
goto mmove;
goto move;
case MDBX_SET_UPPERBOUND: /* mostly same as MDBX_SET_LOWERBOUND */
case MDBX_SET_LOWERBOUND: {
if (unlikely(key == NULL || data == NULL))
return MDBX_EINVAL;
@@ -14548,6 +14549,15 @@ int mdbx_cursor_get(MDBX_cursor *mc, MDBX_val *key, MDBX_val *data,
}
if (rc == MDBX_SUCCESS && !csr.exact)
rc = MDBX_RESULT_TRUE;
if (unlikely(op == MDBX_SET_UPPERBOUND)) {
/* minor fixups for MDBX_SET_UPPERBOUND */
if (rc == MDBX_RESULT_TRUE)
/* already at great-than by MDBX_SET_LOWERBOUND */
rc = MDBX_SUCCESS;
else if (rc == MDBX_SUCCESS)
/* exactly match, going next */
rc = mdbx_cursor_next(mc, key, data, MDBX_NEXT);
}
break;
}
default: