Efficiency of sax and script packages in android

 

SAX and script in debug mode

The efficiency is extremely slow, and the running mode is much better, about 5-10 times faster.

 

In addition, the script package will compile a print method, which takes a lot of time and seriously affects the efficiency.

After removing and optimizing

500 scripts, which are reduced from 1 s to 200 ms

 

The code is simplified as follows:

 

RhinoScriptEngine. java

Scriptable getruntimesxt (ScriptContext ctxt ){

If (ctxt = null ){

Throw new NullPointerException ("null script context ");

}

 

// We create a scope for the given ScriptContext

Scriptable newScope = new ExternalScriptable (ctxt, indexedProps );

 

// Set the prototype of newScope to be 'toplevel' so that

// JavaScript standard objects are visible from the scope.

NewScope. setPrototype (topLevel );

 

// Define "context" variable in the new scope

NewScope. put ("context", newScope, ctxt );

 

// Define "print", "println" functions in the new scope

// Remove the following lines

// Context cx = enterContext ();

// Try {

// Cx. evaluateString (newScope, printSource, "print", 1, null );

//} Finally {

// Cx. exit ();

//}

Return newScope;

}