java-interp.h: Added _Jv_Frame class and its two subclasses _Jv_InterpFrame and _Jv_NativeFrame.

2007-01-29  Kyle Galloway  <kgallowa@redhat.com>

	* include/java-interp.h:  Added _Jv_Frame class and its two
	subclasses _Jv_InterpFrame and _Jv_NativeFrame.  Also moved
	_Jv_FrameType from java-stack.h.
	* include/java-stack.h: Removed _Jv_FrameType.
	* java/lang/Thread.java: Added frame member to hold new
	composite frame stack.
	* java/lang/Thread.h: Regenerated.
	* java/lang/Thread.class: Rebuilt.
	* jni.cc (_Jv_JNIMethod::call): Push a frame onto the stack when
	calling a JNI method.
	* jvmti.cc (_Jv_JVMTI_GetStackTrace): New Method.
	(_Jv_JVMTI_GetFrameCount): New method.
	* stacktrace.cc (UnwindTraceFn): Modified to use new _Jv_Frame
	classes.
	* testsuite/libjava.jvmti/interp/getstacktrace.jar: New test.
	* testsuite/libjava.jvmti/interp/natgetstacktrace.cc: New test.
	* testsuite/libjava.jvmti/interp/getstacktrace.h: New test.
	* testsuite/libjava.jvmti/interp/getstacktrace.jar: New test.
	* testsuite/libjava.jvmti/interp/getstacktrace.out: Output file
	for test.

From-SVN: r121314

2 files changed, 65 insertions, 21 deletions

diff --git a/libjava/include/java-interp.h b/libjava/include/java-interp.h
index 3b15b5c..3a43977 100644
--- a/libjava/include/java-interp.h
+++ b/libjava/include/java-interp.h
@@ -205,11 +205,11 @@ class _Jv_InterpMethod : public _Jv_MethodBase
   // number info is unavailable.
   int get_source_line(pc_t mpc);
 
+   public:
+
   // Convenience function for indexing bytecode PC/insn slots in
   // line tables for JDWP
   jlong insn_index (pc_t pc);
-  
-   public:
    
   /* Get the line table for this method.
    * start  is the lowest index in the method
@@ -315,35 +315,86 @@ public:
   }
 };
 
-// The interpreted call stack, represented by a linked list of frames.
-struct _Jv_InterpFrame
+enum _Jv_FrameType
 {
+  frame_native,
+  frame_interpreter,
+  frame_proxy
+};
+
+//  The composite call stack as represented by a linked list of frames
+class _Jv_Frame
+{
+public:
+  java::lang::Thread *thread;
+
   union
   {
+    _Jv_MethodBase *self;
     void *meth;
-    _Jv_InterpMethod *self;
     _Jv_Method *proxyMethod;
   };
-  java::lang::Thread *thread;
-  _Jv_InterpFrame *next;
+  
+  //The full list of frames, JNI and interpreted
+  _Jv_Frame *next;
+  _Jv_FrameType frame_type;
+  
+  _Jv_Frame (_Jv_MethodBase *s, java::lang::Thread *thr, _Jv_FrameType type)
+  {
+    self = s;
+    frame_type = type;
+    next = (_Jv_Frame *) thr->frame;
+    thr->frame = (gnu::gcj::RawData *) this;
+    thread = thr;
+  }
+
+  ~_Jv_Frame ()
+  {
+    thread->frame = (gnu::gcj::RawData *) next;
+  }
+};
+
+// An interpreted frame in the call stack
+class _Jv_InterpFrame : public _Jv_Frame
+{
+public:
+  
+  // Keep the purely interpreted list around so as not to break backtraces
+  _Jv_InterpFrame *next_interp;
+  
   union
   {
     pc_t pc;
     jclass proxyClass;
   };
-  
-  _Jv_InterpFrame (void *meth, java::lang::Thread *thr, jclass proxyClass = NULL)
+
+  //Debug info for local variables.
+  _Jv_word *locals;
+  char *locals_type;
+
+  _Jv_InterpFrame (void *meth, java::lang::Thread *thr, jclass proxyCls = NULL)
+  : _Jv_Frame (reinterpret_cast<_Jv_MethodBase *> (meth), thr,
+	             frame_interpreter)
   {
-    this->meth = meth;
-    thread = thr;
-    next = (_Jv_InterpFrame *) thr->interp_frame;
+    next_interp = (_Jv_InterpFrame *) thr->interp_frame;
+    proxyClass = proxyCls;
     thr->interp_frame = (gnu::gcj::RawData *) this;
-    this->proxyClass = proxyClass;
   }
 
   ~_Jv_InterpFrame ()
   {
-    thread->interp_frame = (gnu::gcj::RawData *) next;
+    thread->interp_frame = (gnu::gcj::RawData *) next_interp;
+  }
+};
+
+// A native frame in the call stack really just a placeholder
+class _Jv_NativeFrame : public _Jv_Frame
+{
+public:
+
+  _Jv_NativeFrame (_Jv_JNIMethod *s, java::lang::Thread *thr)
+  : _Jv_Frame (s, thr, frame_native)
+  {
   }
 };
 
diff --git a/libjava/include/java-stack.h b/libjava/include/java-stack.h
index d4d63d7..49e6841 100644
--- a/libjava/include/java-stack.h
+++ b/libjava/include/java-stack.h
@@ -41,13 +41,6 @@ extern "Java"
   }
 }
 
-enum _Jv_FrameType
-{
-  frame_native,
-  frame_interpreter,
-  frame_proxy
-};
-
 #ifdef INTERPRETER
 struct _Jv_InterpFrameInfo
 {