hotspot/src/share/vm/prims/forte.cpp
author sgoldman
Tue, 08 Apr 2008 12:23:15 -0400
changeset 354 3b42d6fdcb82
parent 1 489c9b5090e2
child 670 ddf3e9583f2f
permissions -rw-r--r--
6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on Summary: Rewrite frame::safe_for_sender and friends to be safe for collector/analyzer Reviewed-by: dcubed, kvn
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/*
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 * Copyright 2003-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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# include "incls/_precompiled.incl"
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# include "incls/_forte.cpp.incl"
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// These name match the names reported by the forte quality kit
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enum {
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  ticks_no_Java_frame         =  0,
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  ticks_no_class_load         = -1,
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  ticks_GC_active             = -2,
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  ticks_unknown_not_Java      = -3,
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  ticks_not_walkable_not_Java = -4,
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  ticks_unknown_Java          = -5,
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  ticks_not_walkable_Java     = -6,
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  ticks_unknown_state         = -7,
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  ticks_thread_exit           = -8,
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  ticks_deopt                 = -9,
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  ticks_safepoint             = -10
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};
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//-------------------------------------------------------
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// Native interfaces for use by Forte tools.
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#ifndef IA64
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class vframeStreamForte : public vframeStreamCommon {
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 public:
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  // constructor that starts with sender of frame fr (top_frame)
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  vframeStreamForte(JavaThread *jt, frame fr, bool stop_at_java_call_stub);
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  void forte_next();
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};
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static void is_decipherable_compiled_frame(frame* fr, RegisterMap* map,
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  bool* is_compiled_p, bool* is_walkable_p);
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static bool is_decipherable_interpreted_frame(JavaThread* thread,
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                                                frame* fr,
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                                                methodOop* method_p,
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                                                int* bci_p);
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vframeStreamForte::vframeStreamForte(JavaThread *jt,
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                                     frame fr,
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                                     bool stop_at_java_call_stub) : vframeStreamCommon(jt) {
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  _stop_at_java_call_stub = stop_at_java_call_stub;
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  _frame = fr;
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  // We must always have a valid frame to start filling
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  bool filled_in = fill_from_frame();
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  assert(filled_in, "invariant");
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}
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// Solaris SPARC Compiler1 needs an additional check on the grandparent
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// of the top_frame when the parent of the top_frame is interpreted and
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// the grandparent is compiled. However, in this method we do not know
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// the relationship of the current _frame relative to the top_frame so
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// we implement a more broad sanity check. When the previous callee is
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// interpreted and the current sender is compiled, we verify that the
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// current sender is also walkable. If it is not walkable, then we mark
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// the current vframeStream as at the end.
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void vframeStreamForte::forte_next() {
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  // handle frames with inlining
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  if (_mode == compiled_mode &&
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      vframeStreamCommon::fill_in_compiled_inlined_sender()) {
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    return;
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  }
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  // handle general case
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  int loop_count = 0;
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  int loop_max = MaxJavaStackTraceDepth * 2;
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  do {
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    loop_count++;
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    // By the time we get here we should never see unsafe but better
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    // safe then segv'd
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    if (loop_count > loop_max || !_frame.safe_for_sender(_thread)) {
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      _mode = at_end_mode;
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      return;
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    }
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    _frame = _frame.sender(&_reg_map);
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  } while (!fill_from_frame());
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}
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// Determine if 'fr' is a decipherable compiled frame. We are already
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// assured that fr is for a java nmethod.
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static bool is_decipherable_compiled_frame(frame* fr) {
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  assert(fr->cb() != NULL && fr->cb()->is_nmethod(), "invariant");
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  nmethod* nm = (nmethod*) fr->cb();
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  assert(nm->is_java_method(), "invariant");
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  // First try and find an exact PcDesc
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  PcDesc* pc_desc = nm->pc_desc_at(fr->pc());
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  // Did we find a useful PcDesc?
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  if (pc_desc != NULL &&
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      pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
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    address probe_pc = fr->pc() + 1;
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    pc_desc = nm->pc_desc_near(probe_pc);
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    // Now do we have a useful PcDesc?
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    if (pc_desc != NULL &&
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        pc_desc->scope_decode_offset() == DebugInformationRecorder::serialized_null) {
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      // No debug information available for this pc
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      // vframeStream would explode if we try and walk the frames.
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      return false;
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    }
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    // This PcDesc is useful however we must adjust the frame's pc
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    // so that the vframeStream lookups will use this same pc
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    fr->set_pc(pc_desc->real_pc(nm));
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  }
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  return true;
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}
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// Determine if 'fr' is a walkable interpreted frame. Returns false
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// if it is not. *method_p, and *bci_p are not set when false is
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// returned. *method_p is non-NULL if frame was executing a Java
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// method. *bci_p is != -1 if a valid BCI in the Java method could
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// be found.
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// Note: this method returns true when a valid Java method is found
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// even if a valid BCI cannot be found.
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static bool is_decipherable_interpreted_frame(JavaThread* thread,
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                                                frame* fr,
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                                                methodOop* method_p,
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                                                int* bci_p) {
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  assert(fr->is_interpreted_frame(), "just checking");
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  // top frame is an interpreted frame
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  // check if it is walkable (i.e. valid methodOop and valid bci)
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  // Because we may be racing a gc thread the method and/or bci
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  // of a valid interpreter frame may look bad causing us to
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  // fail the is_interpreted_frame_valid test. If the thread
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  // is in any of the following states we are assured that the
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  // frame is in fact valid and we must have hit the race.
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  JavaThreadState state = thread->thread_state();
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  bool known_valid = (state == _thread_in_native ||
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                      state == _thread_in_vm ||
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                      state == _thread_blocked );
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  if (known_valid || fr->is_interpreted_frame_valid(thread)) {
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    // The frame code should completely validate the frame so that
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    // references to methodOop and bci are completely safe to access
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    // If they aren't the frame code should be fixed not this
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    // code. However since gc isn't locked out the values could be
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    // stale. This is a race we can never completely win since we can't
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    // lock out gc so do one last check after retrieving their values
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    // from the frame for additional safety
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    methodOop method = fr->interpreter_frame_method();
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    // We've at least found a method.
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    // NOTE: there is something to be said for the approach that
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    // if we don't find a valid bci then the method is not likely
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    // a valid method. Then again we may have caught an interpreter
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    // frame in the middle of construction and the bci field is
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    // not yet valid.
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    *method_p = method;
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    // See if gc may have invalidated method since we validated frame
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    if (!Universe::heap()->is_valid_method(method)) return false;
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    intptr_t bcx = fr->interpreter_frame_bcx();
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    int      bci = method->validate_bci_from_bcx(bcx);
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    // note: bci is set to -1 if not a valid bci
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    *bci_p = bci;
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    return true;
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  }
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  return false;
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}
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// Determine if 'fr' can be used to find an initial Java frame.
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// Return false if it can not find a fully decipherable Java frame
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// (in other words a frame that isn't safe to use in a vframe stream).
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// Obviously if it can't even find a Java frame false will also be returned.
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//
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// If we find a Java frame decipherable or not then by definition we have
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// identified a method and that will be returned to the caller via method_p.
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// If we can determine a bci that is returned also. (Hmm is it possible
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// to return a method and bci and still return false? )
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//
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// The initial Java frame we find (if any) is return via initial_frame_p.
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//
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static bool find_initial_Java_frame(JavaThread* thread,
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                                    frame* fr,
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                                    frame* initial_frame_p,
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                                    methodOop* method_p,
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                                    int* bci_p) {
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  // It is possible that for a frame containing an nmethod
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  // we can capture the method but no bci. If we get no
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  // bci the frame isn't walkable but the method is usable.
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  // Therefore we init the returned methodOop to NULL so the
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  // caller can make the distinction.
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  *method_p = NULL;
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  // On the initial call to this method the frame we get may not be
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  // recognizable to us. This should only happen if we are in a JRT_LEAF
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  // or something called by a JRT_LEAF method.
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  frame candidate = *fr;
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  // If the starting frame we were given has no codeBlob associated with
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  // it see if we can find such a frame because only frames with codeBlobs
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  // are possible Java frames.
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  if (fr->cb() == NULL) {
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    // See if we can find a useful frame
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    int loop_count;
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    int loop_max = MaxJavaStackTraceDepth * 2;
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    RegisterMap map(thread, false);
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    for (loop_count = 0; loop_count < loop_max; loop_count++) {
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      if (!candidate.safe_for_sender(thread)) return false;
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      candidate = candidate.sender(&map);
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      if (candidate.cb() != NULL) break;
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    }
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    if (candidate.cb() == NULL) return false;
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  }
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  // We have a frame known to be in the codeCache
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  // We will hopefully be able to figure out something to do with it.
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  int loop_count;
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  int loop_max = MaxJavaStackTraceDepth * 2;
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  RegisterMap map(thread, false);
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  for (loop_count = 0; loop_count < loop_max; loop_count++) {
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    if (candidate.is_first_frame()) {
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      // If initial frame is frame from StubGenerator and there is no
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      // previous anchor, there are no java frames associated with a method
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      return false;
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    }
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    if (candidate.is_interpreted_frame()) {
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      if (is_decipherable_interpreted_frame(thread, &candidate, method_p, bci_p)) {
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        *initial_frame_p = candidate;
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        return true;
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      }
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      // Hopefully we got some data
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      return false;
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    }
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    if (candidate.cb()->is_nmethod()) {
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      nmethod* nm = (nmethod*) candidate.cb();
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      *method_p = nm->method();
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      // If the frame isn't fully decipherable then the default
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   310
      // value for the bci is a signal that we don't have a bci.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
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   311
      // If we have a decipherable frame this bci value will
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   312
      // not be used.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   313
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   314
      *bci_p = -1;
1
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diff changeset
   315
354
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   316
      *initial_frame_p = candidate;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   317
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   318
      // Native wrapper code is trivial to decode by vframeStream
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diff changeset
   319
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   320
      if (nm->is_native_method()) return true;
1
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parents:
diff changeset
   321
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   322
      // If it isn't decipherable then we have found a pc that doesn't
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   323
      // have a PCDesc that can get us a bci however we did find
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   324
      // a method
1
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diff changeset
   325
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   326
      if (!is_decipherable_compiled_frame(&candidate)) {
1
489c9b5090e2 Initial load
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   327
        return false;
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   328
      }
1
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diff changeset
   329
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   330
      // is_decipherable_compiled_frame may modify candidate's pc
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   331
      *initial_frame_p = candidate;
1
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parents:
diff changeset
   332
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   333
      return true;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   334
    }
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   335
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   336
    // Must be some stub frame that we don't care about
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   337
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   338
    if (!candidate.safe_for_sender(thread)) return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   339
    candidate = candidate.sender(&map);
1
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diff changeset
   340
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   341
    // If it isn't in the code cache something is wrong
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   342
    // since once we find a frame in the code cache they
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   343
    // all should be there.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   344
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   345
    if (candidate.cb() == NULL) return false;
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diff changeset
   346
1
489c9b5090e2 Initial load
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   347
  }
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   348
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   349
  return false;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   350
1
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   351
}
489c9b5090e2 Initial load
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parents:
diff changeset
   352
489c9b5090e2 Initial load
duke
parents:
diff changeset
   353
489c9b5090e2 Initial load
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parents:
diff changeset
   354
// call frame copied from old .h file and renamed
489c9b5090e2 Initial load
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parents:
diff changeset
   355
typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   356
    jint lineno;                      // line number in the source file
489c9b5090e2 Initial load
duke
parents:
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   357
    jmethodID method_id;              // method executed in this frame
489c9b5090e2 Initial load
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parents:
diff changeset
   358
} ASGCT_CallFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   359
489c9b5090e2 Initial load
duke
parents:
diff changeset
   360
// call trace copied from old .h file and renamed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   361
typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   362
    JNIEnv *env_id;                   // Env where trace was recorded
489c9b5090e2 Initial load
duke
parents:
diff changeset
   363
    jint num_frames;                  // number of frames in this trace
489c9b5090e2 Initial load
duke
parents:
diff changeset
   364
    ASGCT_CallFrame *frames;          // frames
489c9b5090e2 Initial load
duke
parents:
diff changeset
   365
} ASGCT_CallTrace;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   366
489c9b5090e2 Initial load
duke
parents:
diff changeset
   367
static void forte_fill_call_trace_given_top(JavaThread* thd,
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   368
                                            ASGCT_CallTrace* trace,
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   369
                                            int depth,
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   370
                                            frame top_frame) {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   371
  NoHandleMark nhm;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   372
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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   373
  frame initial_Java_frame;
1
489c9b5090e2 Initial load
duke
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   374
  methodOop method;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   375
  int bci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   376
  int count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   377
489c9b5090e2 Initial load
duke
parents:
diff changeset
   378
  count = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   379
  assert(trace->frames != NULL, "trace->frames must be non-NULL");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   380
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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diff changeset
   381
  bool fully_decipherable = find_initial_Java_frame(thd, &top_frame, &initial_Java_frame, &method, &bci);
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   382
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   383
  // The frame might not be walkable but still recovered a method
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   384
  // (e.g. an nmethod with no scope info for the pc
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   385
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   386
  if (method == NULL) return;
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   387
489c9b5090e2 Initial load
duke
parents:
diff changeset
   388
  CollectedHeap* ch = Universe::heap();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   389
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   390
  // The method is not stored GC safe so see if GC became active
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   391
  // after we entered AsyncGetCallTrace() and before we try to
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   392
  // use the methodOop.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   393
  // Yes, there is still a window after this check and before
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   394
  // we use methodOop below, but we can't lock out GC so that
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   395
  // has to be an acceptable risk.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   396
  if (!ch->is_valid_method(method)) {
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   397
    trace->num_frames = ticks_GC_active; // -2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   398
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   399
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   400
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
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parents: 1
diff changeset
   401
  // We got a Java frame however it isn't fully decipherable
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   402
  // so it won't necessarily be safe to use it for the
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   403
  // initial frame in the vframe stream.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   404
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   405
  if (!fully_decipherable) {
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   406
    // Take whatever method the top-frame decoder managed to scrape up.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   407
    // We look further at the top frame only if non-safepoint
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   408
    // debugging information is available.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   409
    count++;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   410
    trace->num_frames = count;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   411
    trace->frames[0].method_id = method->find_jmethod_id_or_null();
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   412
    if (!method->is_native()) {
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   413
      trace->frames[0].lineno = bci;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   414
    } else {
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   415
      trace->frames[0].lineno = -3;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   416
    }
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   417
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   418
    if (!initial_Java_frame.safe_for_sender(thd)) return;
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   419
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   420
    RegisterMap map(thd, false);
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   421
    initial_Java_frame = initial_Java_frame.sender(&map);
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   422
  }
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   423
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   424
  vframeStreamForte st(thd, initial_Java_frame, false);
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   425
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  for (; !st.at_end() && count < depth; st.forte_next(), count++) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
    bci = st.bci();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
    method = st.method();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
    // The method is not stored GC safe so see if GC became active
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
    // after we entered AsyncGetCallTrace() and before we try to
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
    // use the methodOop.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
    // Yes, there is still a window after this check and before
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
    // we use methodOop below, but we can't lock out GC so that
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
    // has to be an acceptable risk.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
    if (!ch->is_valid_method(method)) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
      // we throw away everything we've gathered in this sample since
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
      // none of it is safe
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   439
      trace->num_frames = ticks_GC_active; // -2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
      return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
    trace->frames[count].method_id = method->find_jmethod_id_or_null();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
    if (!method->is_native()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
      trace->frames[count].lineno = bci;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
    } else {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
      trace->frames[count].lineno = -3;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  trace->num_frames = count;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
// Forte Analyzer AsyncGetCallTrace() entry point. Currently supported
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
// on Linux X86, Solaris SPARC and Solaris X86.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
// Async-safe version of GetCallTrace being called from a signal handler
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
// when a LWP gets interrupted by SIGPROF but the stack traces are filled
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
// with different content (see below).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
// This function must only be called when JVM/TI
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
// CLASS_LOAD events have been enabled since agent startup. The enabled
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
// event will cause the jmethodIDs to be allocated at class load time.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
// The jmethodIDs cannot be allocated in a signal handler because locks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
// cannot be grabbed in a signal handler safely.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
// void (*AsyncGetCallTrace)(ASGCT_CallTrace *trace, jint depth, void* ucontext)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
// Called by the profiler to obtain the current method call stack trace for
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
// a given thread. The thread is identified by the env_id field in the
489c9b5090e2 Initial load
duke
parents:
diff changeset
   472
// ASGCT_CallTrace structure. The profiler agent should allocate a ASGCT_CallTrace
489c9b5090e2 Initial load
duke
parents:
diff changeset
   473
// structure with enough memory for the requested stack depth. The VM fills in
489c9b5090e2 Initial load
duke
parents:
diff changeset
   474
// the frames buffer and the num_frames field.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   475
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   476
// Arguments:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   477
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   478
//   trace    - trace data structure to be filled by the VM.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   479
//   depth    - depth of the call stack trace.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   480
//   ucontext - ucontext_t of the LWP
489c9b5090e2 Initial load
duke
parents:
diff changeset
   481
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   482
// ASGCT_CallTrace:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   483
//   typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   484
//       JNIEnv *env_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   485
//       jint num_frames;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   486
//       ASGCT_CallFrame *frames;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   487
//   } ASGCT_CallTrace;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   488
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   489
// Fields:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   490
//   env_id     - ID of thread which executed this trace.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   491
//   num_frames - number of frames in the trace.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   492
//                (< 0 indicates the frame is not walkable).
489c9b5090e2 Initial load
duke
parents:
diff changeset
   493
//   frames     - the ASGCT_CallFrames that make up this trace. Callee followed by callers.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   494
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   495
//  ASGCT_CallFrame:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   496
//    typedef struct {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   497
//        jint lineno;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   498
//        jmethodID method_id;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   499
//    } ASGCT_CallFrame;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   500
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   501
//  Fields:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   502
//    1) For Java frame (interpreted and compiled),
489c9b5090e2 Initial load
duke
parents:
diff changeset
   503
//       lineno    - bci of the method being executed or -1 if bci is not available
489c9b5090e2 Initial load
duke
parents:
diff changeset
   504
//       method_id - jmethodID of the method being executed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   505
//    2) For native method
489c9b5090e2 Initial load
duke
parents:
diff changeset
   506
//       lineno    - (-3)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   507
//       method_id - jmethodID of the method being executed
489c9b5090e2 Initial load
duke
parents:
diff changeset
   508
489c9b5090e2 Initial load
duke
parents:
diff changeset
   509
extern "C" {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   510
void AsyncGetCallTrace(ASGCT_CallTrace *trace, jint depth, void* ucontext) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   511
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   512
// This is if'd out because we no longer use thread suspension.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   513
// However if someone wanted to backport this to a 5.0 jvm then this
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   514
// code would be important.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   515
#if 0
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   516
  if (SafepointSynchronize::is_synchronizing()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   517
    // The safepoint mechanism is trying to synchronize all the threads.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   518
    // Since this can involve thread suspension, it is not safe for us
489c9b5090e2 Initial load
duke
parents:
diff changeset
   519
    // to be here. We can reduce the deadlock risk window by quickly
489c9b5090e2 Initial load
duke
parents:
diff changeset
   520
    // returning to the SIGPROF handler. However, it is still possible
489c9b5090e2 Initial load
duke
parents:
diff changeset
   521
    // for VMThread to catch us here or in the SIGPROF handler. If we
489c9b5090e2 Initial load
duke
parents:
diff changeset
   522
    // are suspended while holding a resource and another thread blocks
489c9b5090e2 Initial load
duke
parents:
diff changeset
   523
    // on that resource in the SIGPROF handler, then we will have a
489c9b5090e2 Initial load
duke
parents:
diff changeset
   524
    // three-thread deadlock (VMThread, this thread, the other thread).
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   525
    trace->num_frames = ticks_safepoint; // -10
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   526
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   527
  }
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   528
#endif
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   529
489c9b5090e2 Initial load
duke
parents:
diff changeset
   530
  JavaThread* thread;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   531
489c9b5090e2 Initial load
duke
parents:
diff changeset
   532
  if (trace->env_id == NULL ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   533
    (thread = JavaThread::thread_from_jni_environment(trace->env_id)) == NULL ||
489c9b5090e2 Initial load
duke
parents:
diff changeset
   534
    thread->is_exiting()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   535
489c9b5090e2 Initial load
duke
parents:
diff changeset
   536
    // bad env_id, thread has exited or thread is exiting
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   537
    trace->num_frames = ticks_thread_exit; // -8
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   538
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   539
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   540
489c9b5090e2 Initial load
duke
parents:
diff changeset
   541
  if (thread->in_deopt_handler()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   542
    // thread is in the deoptimization handler so return no frames
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   543
    trace->num_frames = ticks_deopt; // -9
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   544
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   545
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   546
489c9b5090e2 Initial load
duke
parents:
diff changeset
   547
  assert(JavaThread::current() == thread,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   548
         "AsyncGetCallTrace must be called by the current interrupted thread");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   549
489c9b5090e2 Initial load
duke
parents:
diff changeset
   550
  if (!JvmtiExport::should_post_class_load()) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   551
    trace->num_frames = ticks_no_class_load; // -1
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   552
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   553
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   554
489c9b5090e2 Initial load
duke
parents:
diff changeset
   555
  if (Universe::heap()->is_gc_active()) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   556
    trace->num_frames = ticks_GC_active; // -2
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   557
    return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   558
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   559
489c9b5090e2 Initial load
duke
parents:
diff changeset
   560
  switch (thread->thread_state()) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   561
  case _thread_new:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   562
  case _thread_uninitialized:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   563
  case _thread_new_trans:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   564
    // We found the thread on the threads list above, but it is too
489c9b5090e2 Initial load
duke
parents:
diff changeset
   565
    // young to be useful so return that there are no Java frames.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   566
    trace->num_frames = 0;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   567
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   568
  case _thread_in_native:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   569
  case _thread_in_native_trans:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   570
  case _thread_blocked:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   571
  case _thread_blocked_trans:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   572
  case _thread_in_vm:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   573
  case _thread_in_vm_trans:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   574
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   575
      frame fr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   576
489c9b5090e2 Initial load
duke
parents:
diff changeset
   577
      // param isInJava == false - indicate we aren't in Java code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   578
      if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, false)) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   579
        trace->num_frames = ticks_unknown_not_Java;  // -3 unknown frame
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   580
      } else {
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   581
        if (!thread->has_last_Java_frame()) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   582
          trace->num_frames = 0; // No Java frames
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   583
        } else {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   584
          trace->num_frames = ticks_not_walkable_not_Java;    // -4 non walkable frame by default
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   585
          forte_fill_call_trace_given_top(thread, trace, depth, fr);
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   586
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   587
          // This assert would seem to be valid but it is not.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   588
          // It would be valid if we weren't possibly racing a gc
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   589
          // thread. A gc thread can make a valid interpreted frame
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   590
          // look invalid. It's a small window but it does happen.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   591
          // The assert is left here commented out as a reminder.
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   592
          // assert(trace->num_frames != ticks_not_walkable_not_Java, "should always be walkable");
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   593
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   594
        }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   595
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   596
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   597
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   598
  case _thread_in_Java:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   599
  case _thread_in_Java_trans:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   600
    {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   601
      frame fr;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   602
489c9b5090e2 Initial load
duke
parents:
diff changeset
   603
      // param isInJava == true - indicate we are in Java code
489c9b5090e2 Initial load
duke
parents:
diff changeset
   604
      if (!thread->pd_get_top_frame_for_signal_handler(&fr, ucontext, true)) {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   605
        trace->num_frames = ticks_unknown_Java;  // -5 unknown frame
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   606
      } else {
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   607
        trace->num_frames = ticks_not_walkable_Java;  // -6, non walkable frame by default
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   608
        forte_fill_call_trace_given_top(thread, trace, depth, fr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   609
      }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   610
    }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   611
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   612
  default:
489c9b5090e2 Initial load
duke
parents:
diff changeset
   613
    // Unknown thread state
354
3b42d6fdcb82 6603919: Stackwalking crash on x86 -server with Sun Studio's collect -j on
sgoldman
parents: 1
diff changeset
   614
    trace->num_frames = ticks_unknown_state; // -7
1
489c9b5090e2 Initial load
duke
parents:
diff changeset
   615
    break;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   616
  }
489c9b5090e2 Initial load
duke
parents:
diff changeset
   617
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   618
489c9b5090e2 Initial load
duke
parents:
diff changeset
   619
489c9b5090e2 Initial load
duke
parents:
diff changeset
   620
#ifndef _WINDOWS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   621
// Support for the Forte(TM) Peformance Tools collector.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   622
//
489c9b5090e2 Initial load
duke
parents:
diff changeset
   623
// The method prototype is derived from libcollector.h. For more
489c9b5090e2 Initial load
duke
parents:
diff changeset
   624
// information, please see the libcollect man page.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   625
489c9b5090e2 Initial load
duke
parents:
diff changeset
   626
// Method to let libcollector know about a dynamically loaded function.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   627
// Because it is weakly bound, the calls become NOP's when the library
489c9b5090e2 Initial load
duke
parents:
diff changeset
   628
// isn't present.
489c9b5090e2 Initial load
duke
parents:
diff changeset
   629
void    collector_func_load(char* name,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   630
                            void* null_argument_1,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   631
                            void* null_argument_2,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   632
                            void *vaddr,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   633
                            int size,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   634
                            int zero_argument,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   635
                            void* null_argument_3);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   636
#pragma weak collector_func_load
489c9b5090e2 Initial load
duke
parents:
diff changeset
   637
#define collector_func_load(x0,x1,x2,x3,x4,x5,x6) \
489c9b5090e2 Initial load
duke
parents:
diff changeset
   638
        ( collector_func_load ? collector_func_load(x0,x1,x2,x3,x4,x5,x6),0 : 0 )
489c9b5090e2 Initial load
duke
parents:
diff changeset
   639
#endif // !_WINDOWS
489c9b5090e2 Initial load
duke
parents:
diff changeset
   640
489c9b5090e2 Initial load
duke
parents:
diff changeset
   641
} // end extern "C"
489c9b5090e2 Initial load
duke
parents:
diff changeset
   642
#endif // !IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   643
489c9b5090e2 Initial load
duke
parents:
diff changeset
   644
void Forte::register_stub(const char* name, address start, address end) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   645
#if !defined(_WINDOWS) && !defined(IA64)
489c9b5090e2 Initial load
duke
parents:
diff changeset
   646
  assert(pointer_delta(end, start, sizeof(jbyte)) < INT_MAX,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   647
    "Code size exceeds maximum range")
489c9b5090e2 Initial load
duke
parents:
diff changeset
   648
489c9b5090e2 Initial load
duke
parents:
diff changeset
   649
  collector_func_load((char*)name, NULL, NULL, start,
489c9b5090e2 Initial load
duke
parents:
diff changeset
   650
    pointer_delta(end, start, sizeof(jbyte)), 0, NULL);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   651
#endif // !_WINDOWS && !IA64
489c9b5090e2 Initial load
duke
parents:
diff changeset
   652
}