| % Licensed 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. |
| |
| -module(couch_debug). |
| |
| -export([ |
| opened_files/0, |
| opened_files_by_regexp/1, |
| opened_files_contains/1 |
| ]). |
| |
| -spec opened_files() -> |
| [{port(), CouchFilePid :: pid(), Fd :: pid() | tuple(), FilePath :: string()}]. |
| |
| opened_files() -> |
| Info = [couch_file_port_info(Port) |
| || Port <- erlang:ports(), |
| {name, "efile"} =:= erlang:port_info(Port, name)], |
| [I || I <- Info, is_tuple(I)]. |
| |
| couch_file_port_info(Port) -> |
| {connected, Pid} = erlang:port_info(Port, connected), |
| case couch_file:process_info(Pid) of |
| {Fd, FilePath} -> |
| {Port, Pid, Fd, FilePath}; |
| undefined -> |
| undefined |
| end. |
| |
| -spec opened_files_by_regexp(FileRegExp :: iodata()) -> |
| [{port(), CouchFilePid :: pid(), Fd :: pid() | tuple(), FilePath :: string()}]. |
| opened_files_by_regexp(FileRegExp) -> |
| {ok, RegExp} = re:compile(FileRegExp), |
| lists:filter(fun({_Port, _Pid, _Fd, Path}) -> |
| re:run(Path, RegExp) =/= nomatch |
| end, couch_debug:opened_files()). |
| |
| -spec opened_files_contains(FileNameFragment :: iodata()) -> |
| [{port(), CouchFilePid :: pid(), Fd :: pid() | tuple(), FilePath :: string()}]. |
| opened_files_contains(FileNameFragment) -> |
| lists:filter(fun({_Port, _Pid, _Fd, Path}) -> |
| string:str(Path, FileNameFragment) > 0 |
| end, couch_debug:opened_files()). |