| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| #include "postgres.h" |
| #include "cdb/cdbvars.h" |
| #include "cdb/cdbutil.h" |
| #include "cdb/cdbtmpdir.h" |
| #include "cdb/cdbvars.h" |
| #include "miscadmin.h" |
| #include "postmaster/autovacuum.h" |
| #include "storage/ipc.h" |
| #include <sys/stat.h> |
| |
| static List *initTmpDirList(List *list, char *tmpdir_config); |
| |
| List *initTmpDirList(List *list, char *szTmpDir) |
| { |
| int idx = -1, i = 0; |
| char *tmpdir; |
| int tmpDirNum = 0; |
| |
| for (i = 0; i <= strlen(szTmpDir); i++) |
| { |
| if (szTmpDir[i] == ',' || i == strlen(szTmpDir)) |
| { |
| /* in case two commas are written together */ |
| if (i-idx > 1) |
| { |
| tmpdir = (char *)palloc0(i-idx); |
| strncpy(tmpdir, szTmpDir+idx+1, i-idx-1); |
| tmpDirNum++; |
| elog(DEBUG5, "Get a temporary directory:%s", tmpdir); |
| list = lappend(list, tmpdir); |
| } |
| idx = i; |
| } |
| } |
| |
| return list; |
| } |
| |
| void destroyTmpDirList(List *list) |
| { |
| ListCell *lc = NULL; |
| |
| foreach(lc, list) |
| { |
| char *tmpdir = (char *)lfirst(lc); |
| pfree(tmpdir); |
| } |
| list_free(list); |
| } |
| |
| void getLocalTmpDirFromMasterConfig(int session_id) |
| { |
| List *tmpdirs = NULL; |
| |
| tmpdirs = initTmpDirList(tmpdirs, rm_master_tmp_dirs); |
| if (tmpdirs != NULL ) |
| { |
| LocalTempPath = pstrdup((char *)lfirst(list_nth_cell(tmpdirs, gp_session_id % list_length(tmpdirs)))); |
| destroyTmpDirList(tmpdirs); |
| } |
| } |
| |
| void getLocalTmpDirFromSegmentConfig(int session_id, int command_id, int qeidx) |
| { |
| List *tmpdirs = NULL; |
| |
| if (qeidx == -1) |
| { |
| // QE on master |
| getLocalTmpDirFromMasterConfig(session_id); |
| } |
| else |
| { |
| // QE on segment |
| tmpdirs = initTmpDirList(tmpdirs, rm_seg_tmp_dirs); |
| int64_t session_key = session_id; |
| int64_t key = (session_key << 32) + command_id + qeidx; |
| if (tmpdirs != NULL ) |
| { |
| LocalTempPath = pstrdup((char *)lfirst(list_nth_cell(tmpdirs, key % list_length(tmpdirs)))); |
| destroyTmpDirList(tmpdirs); |
| } |
| } |
| } |
| |
| |
| |
| |