natClassLoader.cc (_Jv_PrepareCompiledClass): Call _Jv_PushClass.

2002-12-03  Andrew Haley  <aph@redhat.com>

        * java/lang/natClassLoader.cc (_Jv_PrepareCompiledClass): Call
	_Jv_PushClass.
        (_Jv_InitNewClassFields): Set protectionDomain and chain = NULL.
        (_Jv_PopClass): New.
        (_Jv_PushClass): New.
        * java/lang/natClass.cc (forName (jstring)): Use a StackTrace to
        discover the ClassLoader of our caller.
        (_Jv_CheckArrayStore): Don't check that a class is assignment
        compatible with Object.
        * java/lang/natVMTHrowable.cc: Delete.
        * gnu/gcj/runtime/StackTrace.java: New, partly copied from
	java.lang.VMThrowable.
        (StackTrace(), StackTrace(int)): New constructors.
        (classAt, methodAt, update, methodAtAddress): New methods.
        (map): New field.
	* java/lang/VMThrowable.java: Use StackTrace instead of
	natVMTHrowable.
	* java/lang/Class.h (getClassLoaderInternal): New.
        (class Class): Be friendly with _Jv_PopClass and _Jv_PushClass.
        Be friendly with gnu::gcj::runtime::StackTrace.
        (Object.chain): New field.
        * include/java-interp.h (class _Jv_InterpMethod): Be friendly with
        gnu::gcj::runtime::StackTrace.
        * prims.cc (_Jv_NewObjectArray): Use getClassLoaderInternal()
        instead of getClassLoader().
        * verify.cc (class _Jv_BytecodeVerifier): Likewise.
        java::lang::VMThrowable.
        * Makefile.am (core_java_source_files): Add MethodRef.java,
	StackTrace.java.
        (nat_source_files): Remove natVMThrowable.cc; add natStackTrace.cc.
        * Makefile.in: Rebuild.

2002-12-03  Andrew Haley  <aph@redhat.com>

	* class.c (make_class_data): New field, "chain".
	* decl.c (java_init_decl_processing): Likewise.

From-SVN: r59769

1 files changed, 32 insertions, 0 deletions

diff --git a/libjava/java/lang/natClassLoader.cc b/libjava/java/lang/natClassLoader.cc
index 8bff169..debcb4f 100644
--- a/libjava/java/lang/natClassLoader.cc
+++ b/libjava/java/lang/natClassLoader.cc
@@ -326,6 +326,8 @@ _Jv_PrepareCompiledClass (jclass klass)
     _Jv_LinkOffsetTable(klass);
 
   klass->notifyAll ();
+
+  _Jv_PushClass (klass);
 }
 
 
@@ -587,6 +589,8 @@ _Jv_InitNewClassFields (jclass ret)
   ret->ancestors = NULL;
   ret->idt = NULL;
   ret->arrayclass = NULL;
+  ret->protectionDomain = NULL;
+  ret->chain = NULL;
 }
 
 jclass
@@ -732,3 +736,31 @@ _Jv_NewArrayClass (jclass element, java::lang::ClassLoader *loader,
 
   element->arrayclass = array_class;
 }
+
+static jclass stack_head;
+
+// These two functions form a stack of classes.   When a class is loaded
+// it is pushed onto the stack by the class loader; this is so that
+// StackTrace can quickly determine which classes have been loaded.
+
+jclass
+_Jv_PopClass (void)
+{
+  JvSynchronize sync (&java::lang::Class::class$);
+  if (stack_head)
+    {
+      jclass tmp = stack_head;
+      stack_head = tmp->chain;
+      return tmp;
+    }
+  return NULL;
+}
+
+void
+_Jv_PushClass (jclass k)
+{
+  JvSynchronize sync (&java::lang::Class::class$);
+  jclass tmp = stack_head;
+  stack_head = k;
+  k->chain = tmp;
+}