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[RFA] Implement JVMTI GetClassStatus
- From: Keith Seitz <keiths at redhat dot com>
- To: Java Patch List <java-patches at gcc dot gnu dot org>
- Date: Mon, 22 Jan 2007 15:48:03 -0800
- Subject: [RFA] Implement JVMTI GetClassStatus
Hi,
This patch is an attempt to implement JVMTI's GetClassStatus call. While
I think I've got it right, I would appreciate it if maintainers would
scrutinize the internal class status flags to JVMTI flag part to make
sure I haven't botched anything.
Keith
ChangeLog
2007-01-22 Keith Seitz <keiths@redhat.com>
* java/lang/Class.h (_Jv_GetClassStatus): Declare.
* java/lang/natClass.cc (_Jv_GetClassStatus): New function.
* jvmti.cc (_Jv_JVMTI_GetClassStatus): New function.
(_Jv_JVMTI_Interface): Define GetClassStatus.
Index: java/lang/Class.h
===================================================================
--- java/lang/Class.h (revision 121059)
+++ java/lang/Class.h (working copy)
@@ -1,6 +1,6 @@
// Class.h - Header file for java.lang.Class. -*- c++ -*-
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation
This file is part of libgcj.
@@ -257,6 +257,8 @@
_Jv_MethodBase *_Jv_FindInterpreterMethod (jclass, jmethodID);
#endif
+jbyte _Jv_GetClassState (jclass);
+
// Friend classes and functions to implement the ClassLoader
class java::lang::ClassLoader;
class java::lang::VMClassLoader;
@@ -552,6 +554,7 @@
friend _Jv_MethodBase *(::_Jv_FindInterpreterMethod) (jclass klass,
jmethodID desired_method);
#endif
+ friend jbyte (::_Jv_GetClassState) (jclass klass);
// Friends classes and functions to implement the ClassLoader
friend class java::lang::ClassLoader;
Index: java/lang/natClass.cc
===================================================================
--- java/lang/natClass.cc (revision 121059)
+++ java/lang/natClass.cc (working copy)
@@ -1,6 +1,6 @@
// natClass.cc - Implementation of java.lang.Class native methods.
-/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
Free Software Foundation
This file is part of libgcj.
@@ -2004,3 +2004,9 @@
return reinterpret_cast<jclass> (_Jv_StackTrace::ncodeMap->get (obj));
}
+jbyte
+_Jv_GetClassState (jclass klass)
+{
+ return klass->state;
+}
+
Index: jvmti.cc
===================================================================
--- jvmti.cc (revision 121059)
+++ jvmti.cc (working copy)
@@ -420,6 +420,36 @@
}
static jvmtiError JNICALL
+_Jv_JVMTI_GetClassStatus (MAYBE_UNUSED jvmtiEnv *env, jclass klass,
+ jint *status_ptr)
+{
+ REQUIRE_PHASE (env, JVMTI_PHASE_START | JVMTI_PHASE_LIVE);
+ NULL_CHECK (status_ptr);
+ if (klass == NULL)
+ return JVMTI_ERROR_INVALID_CLASS;
+
+ if (klass->isArray ())
+ *status_ptr = JVMTI_CLASS_STATUS_ARRAY;
+ else if (klass->isPrimitive ())
+ *status_ptr = JVMTI_CLASS_STATUS_PRIMITIVE;
+ else
+ {
+ jbyte state = _Jv_GetClassState (klass);
+ *status_ptr = 0;
+ if (gcj::verifyClasses)
+ (*status_ptr) |= JVMTI_CLASS_STATUS_VERIFIED;
+ if (state >= JV_STATE_PREPARED)
+ (*status_ptr) |= JVMTI_CLASS_STATUS_PREPARED;
+ if (state == JV_STATE_ERROR)
+ (*status_ptr) |= JVMTI_CLASS_STATUS_ERROR;
+ else if (state > JV_STATE_IN_PROGRESS)
+ (*status_ptr) |= JVMTI_CLASS_STATUS_INITIALIZED;
+ }
+
+ return JVMTI_ERROR_NONE;
+}
+
+static jvmtiError JNICALL
_Jv_JVMTI_GetClassModifiers (MAYBE_UNUSED jvmtiEnv *env, jclass klass,
jint *mods)
{
@@ -1452,7 +1524,7 @@
_Jv_JVMTI_Allocate, // Allocate
_Jv_JVMTI_Deallocate, // Deallocate
UNIMPLEMENTED, // GetClassSignature
- UNIMPLEMENTED, // GetClassStatus
+ _Jv_JVMTI_GetClassStatus, // GetClassStatus
UNIMPLEMENTED, // GetSourceFileName
_Jv_JVMTI_GetClassModifiers, // GetClassModifiers
_Jv_JVMTI_GetClassMethods, // GetClassMethods