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High memory usage

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Here is a patch which inspired by Michael Stephens that should work

Dave Cramer
This commit is contained in:
Bruce Momjian 2001-06-25 01:53:59 +00:00
parent 06f6404c42
commit 54361b4233
1 changed files with 14 additions and 12 deletions
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26
src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java
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@ -41,8 +41,8 @@ public class PreparedStatement extends Statement implements java.sql.PreparedSta
// We use ThreadLocal for SimpleDateFormat's because they are not that
// thread safe, so each calling thread has its own object.
private ThreadLocal tl_df = new ThreadLocal(); // setDate() SimpleDateFormat
private ThreadLocal tl_tsdf = new ThreadLocal(); // setTimestamp() SimpleDateFormat
private static ThreadLocal tl_df = new ThreadLocal(); // setDate() SimpleDateFormat
private static ThreadLocal tl_tsdf = new ThreadLocal(); // setTimestamp() SimpleDateFormat
/**
* Constructor for the PreparedStatement class.
@ -64,6 +64,15 @@ public class PreparedStatement extends Statement implements java.sql.PreparedSta
this.sql = sql;
this.connection = connection;
// might just as well create it here, so we don't take the hit later
SimpleDateFormat df = new SimpleDateFormat("''yyyy-MM-dd''");
tl_df.set(df);
df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
tl_tsdf.set(df);
for (i = 0; i < sql.length(); ++i)
{
int c = sql.charAt(i);
@ -89,10 +98,11 @@ public class PreparedStatement extends Statement implements java.sql.PreparedSta
/**
* New in 7.1 - overides Statement.close() to dispose of a few local objects
*/
public void close() throws SQLException {
public void close() throws SQLException
{
// free the ThreadLocal caches
tl_df.set(null);
tl_tsdf.set(null);
super.close();
}
@ -333,10 +343,6 @@ public class PreparedStatement extends Statement implements java.sql.PreparedSta
public void setDate(int parameterIndex, java.sql.Date x) throws SQLException
{
SimpleDateFormat df = (SimpleDateFormat) tl_df.get();
if(df==null) {
df = new SimpleDateFormat("''yyyy-MM-dd''");
tl_df.set(df);
}
set(parameterIndex, df.format(x));
@ -376,10 +382,6 @@ public class PreparedStatement extends Statement implements java.sql.PreparedSta
public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException
{
SimpleDateFormat df = (SimpleDateFormat) tl_tsdf.get();
if(df==null) {
df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
tl_tsdf.set(df);
}
df.setTimeZone(TimeZone.getTimeZone("GMT"));
// Use the shared StringBuffer