View source for CAEngine::DefaultEvaluationTimeLimit/zh

[[Category:ADE User Guide]]
[[ADE User Guide]] > [[ADE Server Class Reference]] > [[CAEngine]]
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''[[What's new in Analytica 4.3? | ADE 4.3新特征]]''

= 描述 =

强加在CAEngine中方法计算上的最大时间限制（单位：毫秒），这些方法包括：SendCommand、Send、OpenModel，和AddModule，以及任何实例化的CAObject的[[CAObject::MethodEvaluationTimeLimit/zh | CAObject::MethodEvaluationTimeLimit]]默认值， 

= 数据类型 =

long

= 访问 =

读 / 写

= 示例用法 =

 CAEngine ade = new CAEngine;
 ade.DefaultEvaluationTimeLimit = 10000 /*ms*/;    // 终止计算时间超过10秒的任何计算。

= 什么时候使用 =

如果你担心计算（可能在任意模型当中）会花非常长的时间并因此导致大量占据CPU周期你可以使用此方法。

For computation of variable results, you have the option of setting [[CAObject::MethodEvaluationTimeLimit]] instead.  However, if you want to limit the time spent when a typescript command is evaluated (e.g., via [[CAEngine::SendCommand]]), or for evaluations that occur when opening a model, then you must set the time limit using this property.

An alternative to limiting the maximum evaluation time is to provide your users with an "abort" functionality, such as Ctrl+Break.  See [[How to Abort an ADE Computation]].

= 另请参考 =

* [[CAObject::MethodEvaluationTimeLimit/zh | CAObject::MethodEvaluationTimeLimit]]
* [[How to Abort an ADE Computation | 如何终止ADE计算]]