static void *cl_rbtree_add_dup_allow(struct cl_rbtree *tree, void *value) {
struct cl_rbnode *n = cl_pool_alloc(&tree->pool);
if(n == NULL)
return NULL;
cl_rbnode_init(n, value);
cl_rbtree_insert(tree, n);
tree->n_items++;
return value;
}
/*
Add into the rbtree thats on-disk
*/
static int cl_db_link_record(int handle,struct cl_db *ptr) {
cldb_offset_t parent = -1;
int go_left = -1;
int err = -1;
cldb_offset_t root = CL_DB_ROOT(handle) ;
struct cl_db_header old_header;
/*First take a copy of the header*/
memcpy(&old_header,&CL_DB_HEADER(handle),sizeof(old_header));
root = root ?:-1;
while(root != -1) {
struct cl_db record;
int cmp;
parent = root;
if(cl_db_record_read_unfmt(handle,&record,parent,CLDB_DATA_ALL) < 0) {
output("Error reading record");
goto out;
}
cmp = cl_db_compare(ptr,&record);
if(!cmp) {
output("Found a duplicate key for the record...");
err = CLDB_DUPLICATE;
goto out;
}
if(cmp < 0) {
go_left = 1;
root = record.left;
} else {
go_left = 0;
root = record.right;
}
free((void*)record.key);
free((void*)record.data);
}
if(cl_db_commit_start(handle) < 0 ) {
output("Error in starting commit..");
goto out;
}
/*First get the offsets first*/
if(cl_db_get_free_offset(handle,ptr) < 0 ) {
output("Error in getting free offset...");
goto out_rollback;
}
if(cl_rbtree_insert(handle,ptr,parent,go_left) < 0 ) {
output("Error in rbtree insert");
goto out_rollback;
}
if(cl_db_queue_record(handle,ptr,CL_DB_LAST_OFFSET(handle),-1) < 0 ) {
output("Error in queueing record");
goto out_rollback;
}
if(cl_db_touch_node(handle,ptr) < 0 ) {
output("Error touching node");
goto out_rollback;
}
++CL_DB_HEADER(handle).records;
if(cl_db_touch_header(handle) < 0 ) {
output("Error updating header");
goto out_rollback;
}
if(cl_db_commit_end(handle) < 0 ) {
output("Error committing the records to the disk...");
goto out;
}
err = 0;
cl_db_display_root(handle);
goto out;
out_rollback:
/*Restore the old header*/
output("Restoring the old db header...");
memcpy(&CL_DB_HEADER(handle),&old_header,sizeof(old_header));
if(cl_db_commit_rollback(handle) < 0 ) {
output("Error in commit rollback...");
}
out:
return err;
}
