delphimvcframework/lib/loggerpro/LoggerPro.GlobalLogger.pas

97 lines
2.3 KiB
ObjectPascal

// *************************************************************************** }
//
// LoggerPro
//
// Copyright (c) 2010-2023 Daniele Teti
//
// https://github.com/danieleteti/loggerpro
//
// ***************************************************************************
//
// 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.
//
// ***************************************************************************
unit LoggerPro.GlobalLogger;
interface
uses
LoggerPro;
{ @abstract(The global logger. Just uses @link(Logger.GlobalLogger) and you can start to log using @code(Log) function.)
The global logger is configured with a @link(TLoggerProFileAppender) using default settings.
}
function Log: ILogWriter;
{ @abstract(Use only inside DLL because dll unloading is not a safe place to shutdown threads, so call this before unload DLL)
Use this also in ISAPI dll. Check the @code(loggerproisapisample.dll) sample
}
procedure ReleaseGlobalLogger;
implementation
uses
LoggerPro.FileAppender;
var
_Logger: ILogWriter;
_Lock: TObject = nil;
_ShuttedDown: boolean = false;
function Log: ILogWriter;
begin
if _Logger = nil then
begin
if not _ShuttedDown then
begin
TMonitor.Enter(_Lock);
try
if _Logger = nil then // double check
begin
_Logger := BuildLogWriter([TLoggerProFileAppender.Create]);
end;
finally
TMonitor.Exit(_Lock);
end;
end;
end;
Result := _Logger;
end;
procedure ReleaseGlobalLogger;
begin
if _Logger <> nil then
begin
TMonitor.Enter(_Lock);
try
if _Logger <> nil then // double check
begin
_Logger := nil;
_ShuttedDown := True;
end;
finally
TMonitor.Exit(_Lock);
end;
end;
end;
initialization
_Lock := TObject.Create;
finalization
_Lock.Free;
end.