Thanks for the feedback Roger,
Yes, exporting the InitializeEncoding entry point would make sense,
keeping it consistent with Canonicalize(). I have attached the new patch
below:
Many thanks
Andrew
diff --git a/src/java.base/share/native/libjava/jni_util.c
b/src/java.base/share/native/libjava/jni_util.c
--- a/src/java.base/share/native/libjava/jni_util.c
+++ b/src/java.base/share/native/libjava/jni_util.c
@@ -774,8 +774,10 @@
return newSizedStringJava(env, str, len);
}
-/* Initialize the fast encoding from the encoding name. */
-void
+/* Initialize the fast encoding from the encoding name.
+ * Export InitializeEncoding so that the VM can initialize it if
required.
+ */
+JNIEXPORT void
InitializeEncoding(JNIEnv *env, const char *encname)
{
jclass strClazz = NULL;
Andrew Leonard
Java Runtimes Development
IBM Hursley
IBM United Kingdom Ltd
Phone internal: 245913, external: 01962 815913
internet email: andrew_m_leon...@uk.ibm.com
From: Roger Riggs <roger.ri...@oracle.com>
To: Andrew Leonard <andrew_m_leon...@uk.ibm.com>
Cc: core-libs-dev@openjdk.java.net
Date: 06/04/2018 15:39
Subject: Re: RFR: Export InitializeEncoding for JVM access
Hi Andrew,
Would it be sufficient to export the InitializeEncoding entry point?
Introducing a JNU_xx name may imply a level of support that is unwarranted
since
it is part of system initialization and may change as needed by the
implementation.
Simply exporting it would put it on par with Canonicalize.
Thanks, Roger
p.s. Tracking issue: https://bugs.openjdk.java.net/browse/JDK-8201246
On 4/5/2018 5:49 AM, Andrew Leonard wrote:
Hi Roger,
The OpenJ9 VM implementation provides its own java.lang.System, which
performs similar type early-on VM initialization to the OpenJDK core
library classes. The basic reason for invoking the method is to initialize
the platform encoding either called from a related core library method,
eg.initProperties(), or from the VM in the early stages of initialization.
My suggested comparison with canonicalize was based on it's indicated
usage:
/*
* Export the platform dependent path canonicalization so that
* VM can find it when loading system classes.
* This function is also used by the instrumentation agent.
*/
extern int canonicalize(char *path, const char *out, int len);
JNIEXPORT int
Canonicalize(JNIEnv *unused, char *orig, char *out, int len)
{
/* canonicalize an already natived path */
return canonicalize(orig, out, len);
}
Many thanks,
Andrew
Andrew Leonard
Java Runtimes Development
IBM Hursley
IBM United Kingdom Ltd
Phone internal: 245913, external: 01962 815913
internet email: andrew_m_leon...@uk.ibm.com
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number
741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU
