From: Howard Chu <hyc@openldap.org>
Date: Mon, 3 Oct 2011 02:31:18 +0000 (-0700)
Subject: Use IDL caching in tool/quick mode
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=98da203fce1a8e3a8ed8767ac9f7eb8a44d648f2;p=openldap

Use IDL caching in tool/quick mode
---

diff --git a/servers/slapd/back-mdb/index.c b/servers/slapd/back-mdb/index.c
index 58366c88df..8d361bede1 100644
--- a/servers/slapd/back-mdb/index.c
+++ b/servers/slapd/back-mdb/index.c
@@ -184,9 +184,12 @@ static int indexer(
 	rc = mdb_cursor_open( txn, dbi, &mc );
 	if ( rc ) goto done;
 
-	if ( opid == SLAP_INDEX_ADD_OP )
-		keyfunc = mdb_idl_insert_keys;
-	else
+	if ( opid == SLAP_INDEX_ADD_OP ) {
+		if ( slapMode & SLAP_TOOL_QUICK )
+			keyfunc = mdb_tool_idl_add;
+		else
+			keyfunc = mdb_idl_insert_keys;
+	} else
 		keyfunc = mdb_idl_delete_keys;
 
 	if( IS_SLAP_INDEX( mask, SLAP_INDEX_PRESENT ) ) {
diff --git a/servers/slapd/back-mdb/proto-mdb.h b/servers/slapd/back-mdb/proto-mdb.h
index 28f74210d1..3c2e255b25 100644
--- a/servers/slapd/back-mdb/proto-mdb.h
+++ b/servers/slapd/back-mdb/proto-mdb.h
@@ -359,6 +359,11 @@ extern BI_tool_entry_reindex		mdb_tool_entry_reindex;
 extern BI_tool_dn2id_get		mdb_tool_dn2id_get;
 extern BI_tool_entry_modify		mdb_tool_entry_modify;
 
+int mdb_tool_idl_add(
+	MDB_cursor *mc,
+	struct berval *keys,
+	ID id );
+
 LDAP_END_DECL
 
 #endif /* _PROTO_MDB_H */
diff --git a/servers/slapd/back-mdb/tools.c b/servers/slapd/back-mdb/tools.c
index 08dc01d9af..dfc9565434 100644
--- a/servers/slapd/back-mdb/tools.c
+++ b/servers/slapd/back-mdb/tools.c
@@ -24,6 +24,25 @@
 #include "back-mdb.h"
 #include "idl.h"
 
+static int mdb_tool_idl_flush( BackendDB *be, MDB_txn *txn );
+
+#define	IDBLOCK	1024
+
+typedef struct mdb_tool_idl_cache_entry {
+	struct mdb_tool_idl_cache_entry *next;
+	ID ids[IDBLOCK];
+} mdb_tool_idl_cache_entry;
+
+typedef struct mdb_tool_idl_cache {
+	struct berval kstr;
+	mdb_tool_idl_cache_entry *head, *tail;
+	ID first, last;
+	int count;
+} mdb_tool_idl_cache;
+
+static mdb_tool_idl_cache_entry *mdb_tool_idl_free_list;
+static Avlnode *mdb_tool_roots[MDB_INDICES];
+
 static MDB_txn *txn = NULL, *txi = NULL;
 static MDB_cursor *cursor = NULL, *idcursor = NULL;
 static MDB_val key, data;
@@ -138,6 +157,7 @@ int mdb_tool_entry_close(
 		mdb_cursor_close( cursor );
 		cursor = NULL;
 	}
+	mdb_tool_idl_flush( be, txn );
 	if( txn ) {
 		if ( mdb_txn_commit( txn ))
 			return -1;
@@ -594,6 +614,7 @@ done:
 	if( rc == 0 ) {
 		mdb_writes++;
 		if ( mdb_writes >= mdb_writes_per_commit ) {
+			mdb_tool_idl_flush( be, txn );
 			rc = mdb_txn_commit( txn );
 			mdb_writes = 0;
 			txn = NULL;
@@ -748,6 +769,7 @@ done:
 	if( rc == 0 ) {
 		mdb_writes++;
 		if ( mdb_writes >= mdb_writes_per_commit ) {
+			mdb_tool_idl_flush( be, txi );
 			rc = mdb_txn_commit( txi );
 			if( rc != 0 ) {
 				Debug( LDAP_DEBUG_ANY,
@@ -887,3 +909,244 @@ mdb_tool_index_task( void *ctx, void *ptr )
 	return NULL;
 }
 #endif
+
+static int
+mdb_tool_idl_cmp( const void *v1, const void *v2 )
+{
+	const mdb_tool_idl_cache *c1 = v1, *c2 = v2;
+	int rc;
+
+	if (( rc = c1->kstr.bv_len - c2->kstr.bv_len )) return rc;
+	return memcmp( c1->kstr.bv_val, c2->kstr.bv_val, c1->kstr.bv_len );
+}
+
+static int
+mdb_tool_idl_flush_one( MDB_cursor *mc, mdb_tool_idl_cache *ic )
+{
+	mdb_tool_idl_cache_entry *ice;
+	MDB_val key, data;
+	int i, rc;
+	ID id, nid;
+
+	/* Freshly allocated, ignore it */
+	if ( !ic->head && ic->count <= MDB_IDL_DB_SIZE ) {
+		return 0;
+	}
+
+	key.mv_data = ic->kstr.bv_val;
+	key.mv_size = ic->kstr.bv_len;
+
+	rc = mdb_cursor_get( mc, &key, &data, MDB_SET );
+	/* If key already exists and we're writing a range... */
+	if ( rc == 0 && ic->count > MDB_IDL_DB_SIZE ) {
+		nid = *(ID *)data.mv_data;
+		/* If it's not currently a range, must delete old info */
+		if ( nid ) {
+			ic->first = nid;
+			mdb_cursor_del( mc, MDB_NODUPDATA );
+
+			goto setrange;
+		} else {
+			/* Skip lo */
+			rc = mdb_cursor_get( mc, &key, &data, MDB_NEXT_DUP );
+
+			/* Get hi */
+			rc = mdb_cursor_get( mc, &key, &data, MDB_NEXT_DUP );
+
+			/* Store range hi */
+			data.mv_data = &ic->last;
+			rc = mdb_cursor_put( mc, &key, &data, MDB_CURRENT );
+		}
+		rc = 0;
+	} else if ( rc && rc != MDB_NOTFOUND ) {
+		rc = -1;
+	} else if ( ic->count > MDB_IDL_DB_SIZE ) {
+		/* range, didn't exist before */
+setrange:
+		nid = 0;
+		data.mv_size = sizeof(ID);
+		data.mv_data = &nid;
+		rc = mdb_cursor_put( mc, &key, &data, 0 );
+		if ( rc == 0 ) {
+			data.mv_data = &ic->first;
+			rc = mdb_cursor_put( mc, &key, &data, 0 );
+			if ( rc == 0 ) {
+				data.mv_data = &ic->last;
+				rc = mdb_cursor_put( mc, &key, &data, 0 );
+			}
+		}
+		if ( rc ) {
+			rc = -1;
+		}
+	} else {
+		int n;
+
+		data.mv_size = sizeof(ID);
+		/* Just a normal write */
+		rc = 0;
+		for ( ice = ic->head, n=0; ice; ice = ice->next, n++ ) {
+			int end;
+			if ( ice->next ) {
+				end = IDBLOCK;
+			} else {
+				end = ic->count & (IDBLOCK-1);
+				if ( !end )
+					end = IDBLOCK;
+			}
+			for ( i=0; i<end; i++ ) {
+				if ( !ice->ids[i] ) continue;
+				data.mv_data = &ice->ids[i];
+				rc = mdb_cursor_put( mc, &key, &data, MDB_NODUPDATA );
+				if ( rc ) {
+					if ( rc == MDB_KEYEXIST ) {
+						rc = 0;
+						continue;
+					}
+					rc = -1;
+					break;
+				}
+			}
+			if ( rc ) {
+				rc = -1;
+				break;
+			}
+		}
+		if ( ic->head ) {
+			ic->tail->next = mdb_tool_idl_free_list;
+			mdb_tool_idl_free_list = ic->head;
+		}
+	}
+	ch_free( ic );
+	return rc;
+}
+
+static int
+mdb_tool_idl_flush_db( MDB_txn *txn, MDB_dbi dbi, Avlnode *root )
+{
+	MDB_cursor *mc;
+	int rc;
+
+	mdb_cursor_open( txn, dbi, &mc );
+	root = tavl_end( root, TAVL_DIR_LEFT );
+	do {
+		rc = mdb_tool_idl_flush_one( mc, root->avl_data );
+		if ( rc != -1 )
+			rc = 0;
+	} while ((root = tavl_next(root, TAVL_DIR_RIGHT)));
+	mdb_cursor_close( mc );
+
+	return rc;
+}
+
+static int
+mdb_tool_idl_flush( BackendDB *be, MDB_txn *txn )
+{
+	struct mdb_info *mdb = (struct mdb_info *) be->be_private;
+	int rc = 0;
+	unsigned int i;
+
+	for ( i=MDB_NDB; i < mdb->mi_nattrs+MDB_NDB; i++ ) {
+		if ( !mdb_tool_roots[i] ) continue;
+		rc = mdb_tool_idl_flush_db( txn, i, mdb_tool_roots[i] );
+		tavl_free(mdb_tool_roots[i], NULL);
+		mdb_tool_roots[i] = NULL;
+		if ( rc )
+			break;
+	}
+	return rc;
+}
+
+int mdb_tool_idl_add(
+	MDB_cursor *mc,
+	struct berval *keys,
+	ID id )
+{
+	MDB_dbi dbi;
+	mdb_tool_idl_cache *ic, itmp;
+	mdb_tool_idl_cache_entry *ice;
+	int i, rc;
+
+	dbi = mdb_cursor_dbi(mc);
+	for (i=0; keys[i].bv_val; i++) {
+	itmp.kstr = keys[i];
+	ic = tavl_find( (Avlnode *)mdb_tool_roots[dbi], &itmp, mdb_tool_idl_cmp );
+
+	/* No entry yet, create one */
+	if ( !ic ) {
+		MDB_val key, data;
+		ID nid;
+		int rc;
+
+		ic = ch_malloc( sizeof( mdb_tool_idl_cache ) + itmp.kstr.bv_len );
+		ic->kstr.bv_len = itmp.kstr.bv_len;
+		ic->kstr.bv_val = (char *)(ic+1);
+		memcpy( ic->kstr.bv_val, itmp.kstr.bv_val, ic->kstr.bv_len );
+		ic->head = ic->tail = NULL;
+		ic->last = 0;
+		ic->count = 0;
+		tavl_insert( (Avlnode **)&mdb_tool_roots[dbi], ic, mdb_tool_idl_cmp,
+			avl_dup_error );
+
+		/* load existing key count here */
+		key.mv_size = keys[i].bv_len;
+		key.mv_data = keys[i].bv_val;
+		data.mv_size = sizeof( ID );
+		data.mv_data = &nid;
+		rc = mdb_cursor_get( mc, &key, &data, MDB_SET );
+		if ( rc == 0 ) {
+			if ( nid == 0 ) {
+				ic->count = MDB_IDL_DB_SIZE+1;
+			} else {
+				size_t count;
+
+				mdb_cursor_count( mc, &count );
+				ic->count = count;
+				ic->first = nid;
+			}
+		}
+	}
+	/* are we a range already? */
+	if ( ic->count > MDB_IDL_DB_SIZE ) {
+		ic->last = id;
+		continue;
+	/* Are we at the limit, and converting to a range? */
+	} else if ( ic->count == MDB_IDL_DB_SIZE ) {
+		int n;
+		for ( ice = ic->head, n=0; ice; ice = ice->next, n++ )
+			/* counting */ ;
+		if ( n ) {
+			ic->tail->next = mdb_tool_idl_free_list;
+			mdb_tool_idl_free_list = ic->head;
+		}
+		ic->head = ic->tail = NULL;
+		ic->last = id;
+		ic->count++;
+		continue;
+	}
+	/* No free block, create that too */
+	if ( !ic->tail || ( ic->count & (IDBLOCK-1)) == 0) {
+		ice = NULL;
+		if ( mdb_tool_idl_free_list ) {
+			ice = mdb_tool_idl_free_list;
+			mdb_tool_idl_free_list = ice->next;
+		}
+		if ( !ice ) {
+			ice = ch_malloc( sizeof( mdb_tool_idl_cache_entry ));
+		}
+		memset( ice, 0, sizeof( *ice ));
+		if ( !ic->head ) {
+			ic->head = ice;
+		} else {
+			ic->tail->next = ice;
+		}
+		ic->tail = ice;
+		if ( !ic->count )
+			ic->first = id;
+	}
+	ice = ic->tail;
+	ice->ids[ ic->count & (IDBLOCK-1) ] = id;
+	ic->count++;
+	}
+
+	return 0;
+}