Author: markt
Date: Fri Jun 19 17:13:00 2009
New Revision: 786585
URL: http://svn.apache.org/viewvc?rev=786585&view=rev
Log:
As per Filip's suggestions:
- reduce object creation
- better use of ThreadLocals
Modified:
tomcat/trunk/test/org/apache/catalina/valves/Benchmarks.java
Modified: tomcat/trunk/test/org/apache/catalina/valves/Benchmarks.java
URL:
http://svn.apache.org/viewvc/tomcat/trunk/test/org/apache/catalina/valves/Benchmarks.java?rev=786585&r1=786584&r2=786585&view=diff
==============================================================================
--- tomcat/trunk/test/org/apache/catalina/valves/Benchmarks.java (original)
+++ tomcat/trunk/test/org/apache/catalina/valves/Benchmarks.java Fri Jun 19
17:13:00 2009
@@ -191,8 +191,7 @@
return "Syncs";
}
- private volatile long currentMillis = 0;
- private volatile Date currentDate = null;
+ private volatile Date currentDate = new Date();
private String currentDateString = null;
private SimpleDateFormat dayFormatter = new SimpleDateFormat("dd");
private SimpleDateFormat monthFormatter = new SimpleDateFormat("MM");
@@ -231,11 +230,10 @@
private Date getDateSync() {
long systime = System.currentTimeMillis();
- if ((systime - currentMillis) > 1000) {
+ if ((systime - currentDate.getTime()) > 1000) {
synchronized (this) {
- if ((systime - currentMillis) > 1000) {
- currentDate = new Date(systime);
- currentMillis = systime;
+ if ((systime - currentDate.getTime()) > 1000) {
+ currentDate.setTime(systime);
}
}
}
@@ -250,15 +248,13 @@
return "ThreadLocals";
}
- private volatile Date currentDate = null;
- private String currentDateString = null;
+ private ThreadLocal<String> currentDateStringLocal = new
ThreadLocal<String>();
- private ThreadLocal<Long> currentMillisLocal = new ThreadLocal<Long>()
{
- protected Long initialValue() {
- return Long.valueOf(0);
+ private ThreadLocal<Date> currentDateLocal = new ThreadLocal<Date>() {
+ protected Date initialValue() {
+ return new Date();
}
};
- private ThreadLocal<Date> currentDateLocal = new ThreadLocal<Date>();
private ThreadLocal<SimpleDateFormat> dayFormatterLocal = new
ThreadLocal<SimpleDateFormat>() {
protected SimpleDateFormat initialValue() {
return new SimpleDateFormat("dd");
@@ -285,31 +281,28 @@
}
public String printDate() {
- StringBuffer buf = new StringBuffer();
- Date date = getDateLocal();
- if (currentDate != date) {
+ getDateLocal();
+ if (currentDateStringLocal.get() == null) {
StringBuffer current = new StringBuffer(32);
current.append('[');
- current.append(dayFormatterLocal.get().format(date)); // Day
+
current.append(dayFormatterLocal.get().format(currentDateLocal.get())); // Day
current.append('/');
-
current.append(lookup(monthFormatterLocal.get().format(date))); // Month
+
current.append(lookup(monthFormatterLocal.get().format(currentDateLocal.get())));
// Month
current.append('/');
- current.append(yearFormatterLocal.get().format(date)); // Year
+
current.append(yearFormatterLocal.get().format(currentDateLocal.get())); // Year
current.append(':');
- current.append(timeFormatterLocal.get().format(date)); // Time
+
current.append(timeFormatterLocal.get().format(currentDateLocal.get())); // Time
current.append(']');
- currentDateString = current.toString();
- currentDate = date;
+ currentDateStringLocal.set(current.toString());
}
- buf.append(currentDateString);
- return buf.toString();
+ return currentDateStringLocal.get();
}
private Date getDateLocal() {
long systime = System.currentTimeMillis();
- if ((systime - currentMillisLocal.get().longValue()) > 1000) {
- currentDateLocal.set(new Date(systime));
- currentMillisLocal.set(Long.valueOf(systime));
+ if ((systime - currentDateLocal.get().getTime()) > 1000) {
+ currentDateLocal.get().setTime(systime);
+ currentDateStringLocal.set(null);
}
return currentDateLocal.get();
}
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