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| | | /********** |
| | | This library is free software; you can redistribute it and/or modify it under |
| | | the terms of the GNU Lesser General Public License as published by the |
| | | Free Software Foundation; either version 3 of the License, or (at your |
| | | option) any later version. (See <http://www.gnu.org/copyleft/lesser.html>.) |
| | | |
| | | This library is distributed in the hope that it will be useful, but WITHOUT |
| | | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
| | | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for |
| | | more details. |
| | | |
| | | You should have received a copy of the GNU Lesser General Public License |
| | | along with this library; if not, write to the Free Software Foundation, Inc., |
| | | 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| | | **********/ |
| | | // Copyright (c) 1996-2017 Live Networks, Inc. All rights reserved. |
| | | // Basic Usage Environment: for a simple, non-scripted, console application |
| | | // C++ header |
| | | |
| | | #ifndef _BASIC_USAGE_ENVIRONMENT_HH |
| | | #define _BASIC_USAGE_ENVIRONMENT_HH |
| | | |
| | | #ifndef _BASIC_USAGE_ENVIRONMENT0_HH |
| | | #include "BasicUsageEnvironment0.hh" |
| | | #endif |
| | | |
| | | class BasicUsageEnvironment: public BasicUsageEnvironment0 { |
| | | public: |
| | | static BasicUsageEnvironment* createNew(TaskScheduler& taskScheduler); |
| | | |
| | | // redefined virtual functions: |
| | | virtual int getErrno() const; |
| | | |
| | | virtual UsageEnvironment& operator<<(char const* str); |
| | | virtual UsageEnvironment& operator<<(int i); |
| | | virtual UsageEnvironment& operator<<(unsigned u); |
| | | virtual UsageEnvironment& operator<<(double d); |
| | | virtual UsageEnvironment& operator<<(void* p); |
| | | |
| | | protected: |
| | | BasicUsageEnvironment(TaskScheduler& taskScheduler); |
| | | // called only by "createNew()" (or subclass constructors) |
| | | virtual ~BasicUsageEnvironment(); |
| | | }; |
| | | |
| | | |
| | | class BasicTaskScheduler: public BasicTaskScheduler0 { |
| | | public: |
| | | static BasicTaskScheduler* createNew(unsigned maxSchedulerGranularity = 10000/*microseconds*/); |
| | | // "maxSchedulerGranularity" (default value: 10 ms) specifies the maximum time that we wait (in "select()") before |
| | | // returning to the event loop to handle non-socket or non-timer-based events, such as 'triggered events'. |
| | | // You can change this is you wish (but only if you know what you're doing!), or set it to 0, to specify no such maximum time. |
| | | // (You should set it to 0 only if you know that you will not be using 'event triggers'.) |
| | | virtual ~BasicTaskScheduler(); |
| | | |
| | | protected: |
| | | BasicTaskScheduler(unsigned maxSchedulerGranularity); |
| | | // called only by "createNew()" |
| | | |
| | | static void schedulerTickTask(void* clientData); |
| | | void schedulerTickTask(); |
| | | |
| | | protected: |
| | | // Redefined virtual functions: |
| | | virtual void SingleStep(unsigned maxDelayTime); |
| | | |
| | | virtual void setBackgroundHandling(int socketNum, int conditionSet, BackgroundHandlerProc* handlerProc, void* clientData); |
| | | virtual void moveSocketHandling(int oldSocketNum, int newSocketNum); |
| | | |
| | | protected: |
| | | unsigned fMaxSchedulerGranularity; |
| | | |
| | | // To implement background operations: |
| | | int fMaxNumSockets; |
| | | fd_set fReadSet; |
| | | fd_set fWriteSet; |
| | | fd_set fExceptionSet; |
| | | |
| | | private: |
| | | #if defined(__WIN32__) || defined(_WIN32) |
| | | // Hack to work around a bug in Windows' "select()" implementation: |
| | | int fDummySocketNum; |
| | | #endif |
| | | }; |
| | | |
| | | #endif |