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jni.cc (_Jv_JNI_GetAnyFieldID): Handle unresolved fields.

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* jni.cc (_Jv_JNI_GetAnyFieldID): Handle unresolved fields.
	* java/lang/reflect/natField.cc (getType): Use _Jv_ResolveField
	unconditionally.
	* include/jvm.h (_Jv_ResolveField): Declare.
	* include/java-interp.h (_Jv_ResolveField): Don't declare.
	* resolve.cc (_Jv_ResolveField): No longer conditional on
	INTERPRETER.

From-SVN: r40785
This commit is contained in:
Tom Tromey 2001-03-23 19:15:44 +00:00 committed by Tom Tromey
parent e9f4fa7143
commit 83c64db681
7 changed files with 40 additions and 33 deletions
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10
libjava/ChangeLog
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@ -1,3 +1,13 @@
2001-03-22 Tom Tromey <tromey@redhat.com>
* jni.cc (_Jv_JNI_GetAnyFieldID): Handle unresolved fields.
* java/lang/reflect/natField.cc (getType): Use _Jv_ResolveField
unconditionally.
* include/jvm.h (_Jv_ResolveField): Declare.
* include/java-interp.h (_Jv_ResolveField): Don't declare.
* resolve.cc (_Jv_ResolveField): No longer conditional on
INTERPRETER.
2001-03-23 Bryce McKinlay <bryce@albatross.co.nz>
Fix for PR libgcj/1736. Thanks to Robert Boehne and Alexandre Oliva

3
libjava/include/java-interp.h
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@ -1,6 +1,6 @@
// java-interp.h - Header file for the bytecode interpreter. -*- c++ -*-
/* Copyright (C) 1999, 2000 Free Software Foundation
/* Copyright (C) 1999, 2000, 2001 Free Software Foundation
This file is part of libgcj.
@ -40,7 +40,6 @@ bool _Jv_VerifyClassName (_Jv_Utf8Const *name);
bool _Jv_VerifyIdentifier (_Jv_Utf8Const *);
bool _Jv_ClassNameSamePackage (_Jv_Utf8Const *name1, _Jv_Utf8Const *name2);
void _Jv_DefineClass (jclass, jbyteArray, jint, jint);
void _Jv_ResolveField (_Jv_Field *, java::lang::ClassLoader*);
void _Jv_InitField (jobject, jclass, int);
void * _Jv_AllocMethodInvocation (jsize size);

3
libjava/include/jvm.h
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@ -1,6 +1,6 @@
// jvm.h - Header file for private implementation information. -*- c++ -*-
/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
This file is part of libgcj.
@ -219,6 +219,7 @@ extern "C" void _Jv_CheckArrayStore (jobject array, jobject obj);
extern "C" void _Jv_RegisterClass (jclass klass);
extern "C" void _Jv_RegisterClasses (jclass *classes);
extern void _Jv_UnregisterClass (_Jv_Utf8Const*, java::lang::ClassLoader*);
extern void _Jv_ResolveField (_Jv_Field *, java::lang::ClassLoader*);
extern jclass _Jv_FindClass (_Jv_Utf8Const *name,
java::lang::ClassLoader *loader);

6
libjava/java/lang/natClass.cc
View File

@ -678,7 +678,7 @@ java::lang::Class::finalize (void)
void
java::lang::Class::initializeClass (void)
{
// jshort-circuit to avoid needless locking.
// short-circuit to avoid needless locking.
if (state == JV_STATE_DONE)
return;
@ -713,7 +713,9 @@ java::lang::Class::initializeClass (void)
wait ();
// Steps 3 & 4.
if (state == JV_STATE_DONE || state == JV_STATE_IN_PROGRESS || thread == self)
if (state == JV_STATE_DONE
|| state == JV_STATE_IN_PROGRESS
|| thread == self)
{
_Jv_MonitorExit (this);
return;

15
libjava/java/lang/reflect/natField.cc
View File

@ -1,6 +1,6 @@
// natField.cc - Implementation of java.lang.reflect.Field native methods.
/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
This file is part of libgcj.
@ -44,17 +44,8 @@ jclass
java::lang::reflect::Field::getType ()
{
jfieldID fld = _Jv_FromReflectedField (this);
if (! fld->isResolved())
{
JvSynchronize sync (declaringClass);
if (! fld->isResolved())
{
fld->type
= _Jv_FindClassFromSignature(((Utf8Const*) (fld->type))->data,
declaringClass->getClassLoader());
fld->flags &= ~_Jv_FIELD_UNRESOLVED_FLAG;
}
}
JvSynchronize sync (declaringClass);
_Jv_ResolveField (fld, declaringClass->getClassLoader ());
return fld->type;
}

12
libjava/jni.cc
View File

@ -1068,8 +1068,13 @@ _Jv_JNI_GetAnyFieldID (JNIEnv *env, jclass clazz,
// FIXME: what if field_class == NULL?
java::lang::ClassLoader *loader = clazz->getClassLoader ();
while (clazz != NULL)
{
// We acquire the class lock so that fields aren't resolved
// while we are running.
JvSynchronize sync (clazz);
jint count = (is_static
? JvNumStaticFields (clazz)
: JvNumInstanceFields (clazz));
@ -1078,12 +1083,11 @@ _Jv_JNI_GetAnyFieldID (JNIEnv *env, jclass clazz,
: JvGetFirstInstanceField (clazz));
for (jint i = 0; i < count; ++i)
{
// The field is resolved as a side effect of class
// initialization.
JvAssert (field->isResolved ());
_Jv_Utf8Const *f_name = field->getNameUtf8Const(clazz);
// The field might be resolved or it might not be. It
// is much simpler to always resolve it.
_Jv_ResolveField (field, loader);
if (_Jv_equalUtf8Consts (f_name, a_name)
&& field->getClass() == field_class)
return field;

24
libjava/resolve.cc
View File

@ -1,6 +1,6 @@
// resolve.cc - Code for linking and resolving classes and pool entries.
/* Copyright (C) 1999, 2000 Free Software Foundation
/* Copyright (C) 1999, 2000, 2001 Free Software Foundation
This file is part of libgcj.
@ -32,6 +32,17 @@ details. */
#include <java/lang/IncompatibleClassChangeError.h>
#include <java/lang/reflect/Modifier.h>
void
_Jv_ResolveField (_Jv_Field *field, java::lang::ClassLoader *loader)
{
if (! field->isResolved ())
{
_Jv_Utf8Const *sig = (_Jv_Utf8Const*)field->type;
field->type = _Jv_FindClassFromSignature (sig->data, loader);
field->flags &= ~_Jv_FIELD_UNRESOLVED_FLAG;
}
}
#ifdef INTERPRETER
static void throw_internal_error (char *msg)
@ -361,17 +372,6 @@ _Jv_SearchMethodInClass (jclass cls, jclass klass,
return 0;
}
void
_Jv_ResolveField (_Jv_Field *field, java::lang::ClassLoader *loader)
{
if (! field->isResolved ())
{
_Jv_Utf8Const *sig = (_Jv_Utf8Const*)field->type;
field->type = _Jv_FindClassFromSignature (sig->data, loader);
field->flags &= ~_Jv_FIELD_UNRESOLVED_FLAG;
}
}
/** FIXME: this is a terribly inefficient algorithm! It would improve
things if compiled classes to know vtable offset, and _Jv_Method had
a field for this.