--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/prims/stackwalk.hpp Mon Nov 23 12:44:43 2015 -0800
@@ -0,0 +1,102 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+
+#ifndef SHARE_VM_PRIMS_STACKWALK_HPP
+#define SHARE_VM_PRIMS_STACKWALK_HPP
+
+#include "oops/oop.hpp"
+#include "runtime/vframe.hpp"
+
+class StackWalkAnchor : public StackObj {
+private:
+ enum {
+ magic_pos = 0
+ };
+
+ JavaThread* _thread;
+ vframeStream _vfst;
+ jlong _anchor;
+public:
+ StackWalkAnchor(JavaThread* thread)
+ : _thread(thread), _vfst(thread), _anchor(0L) {}
+
+ vframeStream& vframe_stream() { return _vfst; }
+ JavaThread* thread() { return _thread; }
+
+ void setup_magic_on_entry(objArrayHandle classes_array);
+ bool check_magic(objArrayHandle classes_array);
+ bool cleanup_magic_on_exit(objArrayHandle classes_array);
+
+ bool is_valid_in(Thread* thread, objArrayHandle classes_array) {
+ return (_thread == thread && check_magic(classes_array));
+ }
+
+ jlong address_value() {
+ return (jlong) castable_address(this);
+ }
+
+ static StackWalkAnchor* from_current(JavaThread* thread, jlong anchor, objArrayHandle frames_array);
+};
+
+class StackWalk : public AllStatic {
+private:
+ static int fill_in_frames(jlong mode, vframeStream& vfst,
+ int max_nframes, int start_index,
+ objArrayHandle classes_array,
+ objArrayHandle frames_array,
+ int& end_index, TRAPS);
+
+ static void fill_stackframe(Handle stackFrame, const methodHandle& method, int bci);
+
+ static void fill_live_stackframe(Handle stackFrame, const methodHandle& method, int bci,
+ javaVFrame* jvf, TRAPS);
+
+ static inline bool skip_hidden_frames(int mode) {
+ return (mode & JVM_STACKWALK_SHOW_HIDDEN_FRAMES) == 0;
+ }
+ static inline bool need_method_info(int mode) {
+ return (mode & JVM_STACKWALK_FILL_CLASS_REFS_ONLY) == 0;
+ }
+ static inline bool live_frame_info(int mode) {
+ return (mode & JVM_STACKWALK_FILL_LIVE_STACK_FRAMES) != 0;
+ }
+ static inline bool fill_in_stacktrace(int mode) {
+ return (mode & JVM_STACKWALK_FILTER_FILL_IN_STACK_TRACE) != 0;
+ }
+
+public:
+ static oop walk(Handle stackStream, jlong mode,
+ int skip_frames, int frame_count, int start_index,
+ objArrayHandle classes_array,
+ objArrayHandle frames_array,
+ TRAPS);
+
+ static jint moreFrames(Handle stackStream, jlong mode, jlong magic,
+ int frame_count, int start_index,
+ objArrayHandle classes_array,
+ objArrayHandle frames_array,
+ TRAPS);
+};
+#endif // SHARE_VM_PRIMS_STACKWALK_HPP