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authorHoward Chu <hyc@symas.com>2015-12-20 16:27:42 +0000
committerHoward Chu <hyc@symas.com>2015-12-25 08:56:03 +0000
commitba4e217c907d6750aa9ca6cb8b1cb099c8a29523 (patch)
tree7bbd1cf03ebd143696ea919a1dadfe9405ff603e /external/db_drivers/liblmdb64/midl.c
parentMerge pull request #560 (diff)
downloadmonero-ba4e217c907d6750aa9ca6cb8b1cb099c8a29523.tar.xz
Update liblmdb, unify 32/64 sources
Diffstat (limited to 'external/db_drivers/liblmdb64/midl.c')
-rw-r--r--external/db_drivers/liblmdb64/midl.c360
1 files changed, 0 insertions, 360 deletions
diff --git a/external/db_drivers/liblmdb64/midl.c b/external/db_drivers/liblmdb64/midl.c
deleted file mode 100644
index 16782dcaf..000000000
--- a/external/db_drivers/liblmdb64/midl.c
+++ /dev/null
@@ -1,360 +0,0 @@
-/** @file midl.c
- * @brief ldap bdb back-end ID List functions */
-/* $OpenLDAP$ */
-/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
- *
- * Copyright 2000-2015 The OpenLDAP Foundation.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted only as authorized by the OpenLDAP
- * Public License.
- *
- * A copy of this license is available in the file LICENSE in the
- * top-level directory of the distribution or, alternatively, at
- * <http://www.OpenLDAP.org/license.html>.
- */
-
-#include <limits.h>
-#include <string.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <sys/types.h>
-#include "midl.h"
-
-/** @defgroup internal LMDB Internals
- * @{
- */
-/** @defgroup idls ID List Management
- * @{
- */
-#define CMP(x,y) ( (x) < (y) ? -1 : (x) > (y) )
-
-unsigned mdb_midl_search( MDB_IDL ids, MDB_ID id )
-{
- /*
- * binary search of id in ids
- * if found, returns position of id
- * if not found, returns first position greater than id
- */
- unsigned base = 0;
- unsigned cursor = 1;
- int val = 0;
- unsigned n = ids[0];
-
- while( 0 < n ) {
- unsigned pivot = n >> 1;
- cursor = base + pivot + 1;
- val = CMP( ids[cursor], id );
-
- if( val < 0 ) {
- n = pivot;
-
- } else if ( val > 0 ) {
- base = cursor;
- n -= pivot + 1;
-
- } else {
- return cursor;
- }
- }
-
- if( val > 0 ) {
- ++cursor;
- }
- return cursor;
-}
-
-#if 0 /* superseded by append/sort */
-int mdb_midl_insert( MDB_IDL ids, MDB_ID id )
-{
- unsigned x, i;
-
- x = mdb_midl_search( ids, id );
- assert( x > 0 );
-
- if( x < 1 ) {
- /* internal error */
- return -2;
- }
-
- if ( x <= ids[0] && ids[x] == id ) {
- /* duplicate */
- assert(0);
- return -1;
- }
-
- if ( ++ids[0] >= MDB_IDL_DB_MAX ) {
- /* no room */
- --ids[0];
- return -2;
-
- } else {
- /* insert id */
- for (i=ids[0]; i>x; i--)
- ids[i] = ids[i-1];
- ids[x] = id;
- }
-
- return 0;
-}
-#endif
-
-MDB_IDL mdb_midl_alloc(int num)
-{
- MDB_IDL ids = malloc((num+2) * sizeof(MDB_ID));
- if (ids) {
- *ids++ = num;
- *ids = 0;
- }
- return ids;
-}
-
-void mdb_midl_free(MDB_IDL ids)
-{
- if (ids)
- free(ids-1);
-}
-
-int mdb_midl_shrink( MDB_IDL *idp )
-{
- MDB_IDL ids = *idp;
- if (*(--ids) > MDB_IDL_UM_MAX &&
- (ids = realloc(ids, (MDB_IDL_UM_MAX+1) * sizeof(MDB_ID))))
- {
- *ids++ = MDB_IDL_UM_MAX;
- *idp = ids;
- return 1;
- }
- return 0;
-}
-
-static int mdb_midl_grow( MDB_IDL *idp, int num )
-{
- MDB_IDL idn = *idp-1;
- /* grow it */
- idn = realloc(idn, (*idn + num + 2) * sizeof(MDB_ID));
- if (!idn)
- return ENOMEM;
- *idn++ += num;
- *idp = idn;
- return 0;
-}
-
-int mdb_midl_need( MDB_IDL *idp, unsigned num )
-{
- MDB_IDL ids = *idp;
- num += ids[0];
- if (num > ids[-1]) {
- num = (num + num/4 + (256 + 2)) & -256;
- if (!(ids = realloc(ids-1, num * sizeof(MDB_ID))))
- return ENOMEM;
- *ids++ = num - 2;
- *idp = ids;
- }
- return 0;
-}
-
-int mdb_midl_append( MDB_IDL *idp, MDB_ID id )
-{
- MDB_IDL ids = *idp;
- /* Too big? */
- if (ids[0] >= ids[-1]) {
- if (mdb_midl_grow(idp, MDB_IDL_UM_MAX))
- return ENOMEM;
- ids = *idp;
- }
- ids[0]++;
- ids[ids[0]] = id;
- return 0;
-}
-
-int mdb_midl_append_list( MDB_IDL *idp, MDB_IDL app )
-{
- MDB_IDL ids = *idp;
- /* Too big? */
- if (ids[0] + app[0] >= ids[-1]) {
- if (mdb_midl_grow(idp, app[0]))
- return ENOMEM;
- ids = *idp;
- }
- memcpy(&ids[ids[0]+1], &app[1], app[0] * sizeof(MDB_ID));
- ids[0] += app[0];
- return 0;
-}
-
-int mdb_midl_append_range( MDB_IDL *idp, MDB_ID id, unsigned n )
-{
- MDB_ID *ids = *idp, len = ids[0];
- /* Too big? */
- if (len + n > ids[-1]) {
- if (mdb_midl_grow(idp, n | MDB_IDL_UM_MAX))
- return ENOMEM;
- ids = *idp;
- }
- ids[0] = len + n;
- ids += len;
- while (n)
- ids[n--] = id++;
- return 0;
-}
-
-void mdb_midl_xmerge( MDB_IDL idl, MDB_IDL merge )
-{
- MDB_ID old_id, merge_id, i = merge[0], j = idl[0], k = i+j, total = k;
- idl[0] = (MDB_ID)-1; /* delimiter for idl scan below */
- old_id = idl[j];
- while (i) {
- merge_id = merge[i--];
- for (; old_id < merge_id; old_id = idl[--j])
- idl[k--] = old_id;
- idl[k--] = merge_id;
- }
- idl[0] = total;
-}
-
-/* Quicksort + Insertion sort for small arrays */
-
-#define SMALL 8
-#define MIDL_SWAP(a,b) { itmp=(a); (a)=(b); (b)=itmp; }
-
-void
-mdb_midl_sort( MDB_IDL ids )
-{
- /* Max possible depth of int-indexed tree * 2 items/level */
- int istack[sizeof(int)*CHAR_BIT * 2];
- int i,j,k,l,ir,jstack;
- MDB_ID a, itmp;
-
- ir = (int)ids[0];
- l = 1;
- jstack = 0;
- for(;;) {
- if (ir - l < SMALL) { /* Insertion sort */
- for (j=l+1;j<=ir;j++) {
- a = ids[j];
- for (i=j-1;i>=1;i--) {
- if (ids[i] >= a) break;
- ids[i+1] = ids[i];
- }
- ids[i+1] = a;
- }
- if (jstack == 0) break;
- ir = istack[jstack--];
- l = istack[jstack--];
- } else {
- k = (l + ir) >> 1; /* Choose median of left, center, right */
- MIDL_SWAP(ids[k], ids[l+1]);
- if (ids[l] < ids[ir]) {
- MIDL_SWAP(ids[l], ids[ir]);
- }
- if (ids[l+1] < ids[ir]) {
- MIDL_SWAP(ids[l+1], ids[ir]);
- }
- if (ids[l] < ids[l+1]) {
- MIDL_SWAP(ids[l], ids[l+1]);
- }
- i = l+1;
- j = ir;
- a = ids[l+1];
- for(;;) {
- do i++; while(ids[i] > a);
- do j--; while(ids[j] < a);
- if (j < i) break;
- MIDL_SWAP(ids[i],ids[j]);
- }
- ids[l+1] = ids[j];
- ids[j] = a;
- jstack += 2;
- if (ir-i+1 >= j-l) {
- istack[jstack] = ir;
- istack[jstack-1] = i;
- ir = j-1;
- } else {
- istack[jstack] = j-1;
- istack[jstack-1] = l;
- l = i;
- }
- }
- }
-}
-
-unsigned mdb_mid2l_search( MDB_ID2L ids, MDB_ID id )
-{
- /*
- * binary search of id in ids
- * if found, returns position of id
- * if not found, returns first position greater than id
- */
- unsigned base = 0;
- unsigned cursor = 1;
- int val = 0;
- unsigned n = (unsigned)ids[0].mid;
-
- while( 0 < n ) {
- unsigned pivot = n >> 1;
- cursor = base + pivot + 1;
- val = CMP( id, ids[cursor].mid );
-
- if( val < 0 ) {
- n = pivot;
-
- } else if ( val > 0 ) {
- base = cursor;
- n -= pivot + 1;
-
- } else {
- return cursor;
- }
- }
-
- if( val > 0 ) {
- ++cursor;
- }
- return cursor;
-}
-
-int mdb_mid2l_insert( MDB_ID2L ids, MDB_ID2 *id )
-{
- unsigned x, i;
-
- x = mdb_mid2l_search( ids, id->mid );
-
- if( x < 1 ) {
- /* internal error */
- return -2;
- }
-
- if ( x <= ids[0].mid && ids[x].mid == id->mid ) {
- /* duplicate */
- return -1;
- }
-
- if ( ids[0].mid >= MDB_IDL_UM_MAX ) {
- /* too big */
- return -2;
-
- } else {
- /* insert id */
- ids[0].mid++;
- for (i=(unsigned)ids[0].mid; i>x; i--)
- ids[i] = ids[i-1];
- ids[x] = *id;
- }
-
- return 0;
-}
-
-int mdb_mid2l_append( MDB_ID2L ids, MDB_ID2 *id )
-{
- /* Too big? */
- if (ids[0].mid >= MDB_IDL_UM_MAX) {
- return -2;
- }
- ids[0].mid++;
- ids[ids[0].mid] = *id;
- return 0;
-}
-
-/** @} */
-/** @} */