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Commita4005a1

Browse files
author
zhourenjian@gmail.com
committed
On reloading class, try to pre-load class in given class loader to avoid being blocked on reading class bytes from disk
1 parent711b3a7 commita4005a1

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+38
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1 file changed

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‎sources/net.sf.j2s.ajax/ajaxrpc/net/sf/j2s/ajax/SimpleClassLoader.java‎

Lines changed: 38 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -131,6 +131,26 @@ private byte[] loadClassData(String className) throws IOException {
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returnbuff;
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}
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/**
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* Load given class.
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*
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* @param clazzName
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* @return
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*/
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publicstaticClass<?>loadSimpleClass(StringclazzName) {
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try {
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ClassLoaderclassLoader =hasClassReloaded ?allLoaders.get(clazzName) :null;
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if (classLoader !=null) {
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returnclassLoader.loadClass(clazzName);
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}else {
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returnClass.forName(clazzName);
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}
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}catch (Exceptione) {
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//e.printStackTrace();
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}
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returnnull;
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}
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/**
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* Load given class and create instance by default constructor.
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*
@@ -225,6 +245,24 @@ public static void reloadSimpleClasses(String[] clazzNames, String path, String
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if (creatingMore) {// keep it in all loaders
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allLoaders.put("." + (checkedLoaders.size() +1),loader);
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}
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/*
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* It is important to pre-load classes. On server with
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* heavy traffic, If classes are not not being pre-
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* loaded, later reading class bytes from disk (IO) may
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* cause lots of threads from thread pool hanging for
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* some milliseconds, and threads are eaten up, and
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* server may be down in seconds!
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*/
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for (inti =0;i <clazzNames.length;i++) {
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Stringname =clazzNames[i];
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if (name !=null &&name.length() >0) {
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try {
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loader.loadClass(name);
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}catch (ClassNotFoundExceptione) {
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e.printStackTrace();
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}
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}
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}
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for (inti =0;i <clazzNames.length;i++) {
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Stringname =clazzNames[i];
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if (name !=null &&name.length() >0) {

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