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VMCompiler.java (md5Digest): New field. 

* java/lang/VMCompiler.java (md5Digest): New field.
	(compileClass): Clone md5Digest instead of looking up a new one.

From-SVN: r96039
This commit is contained in:
Tom Tromey 2005-03-07 19:51:10 +00:00 committed by Tom Tromey
parent 1de80b0e69
commit 088a176274
2 changed files with 32 additions and 2 deletions
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5
libjava/ChangeLog
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@ -1,3 +1,8 @@
2005-03-07 Tom Tromey <tromey@redhat.com>
* java/lang/VMCompiler.java (md5Digest): New field.
(compileClass): Clone md5Digest instead of looking up a new one.
2005-03-07 Tom Tromey <tromey@redhat.com>
PR java/20215:

29
libjava/java/lang/VMCompiler.java
View File

@ -79,6 +79,24 @@ final class VMCompiler
private static Vector precompiledMapFiles;
// We create a single MD5 engine and then clone it whenever we want
// a new one. This is simpler than trying to find a new one each
// time, and it avoids potential deadlocks due to class loader
// oddities.
private static final MessageDigest md5Digest;
static
{
try
{
md5Digest = MessageDigest.getInstance("MD5");
}
catch (NoSuchAlgorithmException _)
{
md5Digest = null;
}
}
static
{
gcjJitCompiler = System.getProperty("gnu.gcj.jit.compiler");
@ -175,11 +193,18 @@ final class VMCompiler
try
{
MessageDigest md = MessageDigest.getInstance("MD5");
MessageDigest md = (MessageDigest) md5Digest.clone();
digest = md.digest(data);
}
catch (NoSuchAlgorithmException _)
catch (CloneNotSupportedException _)
{
// Can't happen.
return null;
}
catch (NullPointerException _)
{
// If md5Digest==null -- but really this should never happen
// either, since the MD5 digest is in libgcj.
return null;
}