33 #include "runtime/registerMap.hpp"
  34 #include "runtime/thread.inline.hpp"
  35 
  36 bool JfrGetCallTrace::find_top_frame(frame& top_frame, Method** method, frame& first_frame) {
  37   assert(top_frame.cb() != NULL, "invariant");
  38   RegisterMap map(_thread, false);
  39   frame candidate = top_frame;
  40   for (int i = 0; i < MaxJavaStackTraceDepth * 2; ++i) {
  41     if (candidate.is_entry_frame()) {
  42       JavaCallWrapper *jcw = candidate.entry_frame_call_wrapper_if_safe(_thread);
  43       if (jcw == NULL || jcw->is_first_frame()) {
  44         return false;
  45       }
  46     }
  47 
  48     if (candidate.is_interpreted_frame()) {
  49       JavaThreadState state = _thread->thread_state();
  50       const bool known_valid = (state == _thread_in_native || state == _thread_in_vm || state == _thread_blocked);
  51       if (known_valid || candidate.is_interpreted_frame_valid(_thread)) {
  52         Method* im = candidate.interpreter_frame_method();
  53         if (known_valid && !im->is_valid_method()) {
  54           return false;
  55         }
  56         *method = im;
  57         first_frame = candidate;
  58         return true;
  59       }
  60     }
  61 
  62     if (candidate.cb()->is_nmethod()) {
  63       // first check to make sure that we have a sane stack,
  64       // the PC is actually inside the code part of the codeBlob,
  65       // and we are past is_frame_complete_at (stack has been setup)
  66       if (!candidate.safe_for_sender(_thread)) {
  67         return false;
  68       }
  69       nmethod* nm = (nmethod*)candidate.cb();
  70       *method = nm->method();
  71 
  72       if (_in_java) {
  73         PcDesc* pc_desc = nm->pc_desc_near(candidate.pc() + 1);

  33 #include "runtime/registerMap.hpp"
  34 #include "runtime/thread.inline.hpp"
  35 
  36 bool JfrGetCallTrace::find_top_frame(frame& top_frame, Method** method, frame& first_frame) {
  37   assert(top_frame.cb() != NULL, "invariant");
  38   RegisterMap map(_thread, false);
  39   frame candidate = top_frame;
  40   for (int i = 0; i < MaxJavaStackTraceDepth * 2; ++i) {
  41     if (candidate.is_entry_frame()) {
  42       JavaCallWrapper *jcw = candidate.entry_frame_call_wrapper_if_safe(_thread);
  43       if (jcw == NULL || jcw->is_first_frame()) {
  44         return false;
  45       }
  46     }
  47 
  48     if (candidate.is_interpreted_frame()) {
  49       JavaThreadState state = _thread->thread_state();
  50       const bool known_valid = (state == _thread_in_native || state == _thread_in_vm || state == _thread_blocked);
  51       if (known_valid || candidate.is_interpreted_frame_valid(_thread)) {
  52         Method* im = candidate.interpreter_frame_method();
  53         if (known_valid && !Method::is_valid_method(im)) {
  54           return false;
  55         }
  56         *method = im;
  57         first_frame = candidate;
  58         return true;
  59       }
  60     }
  61 
  62     if (candidate.cb()->is_nmethod()) {
  63       // first check to make sure that we have a sane stack,
  64       // the PC is actually inside the code part of the codeBlob,
  65       // and we are past is_frame_complete_at (stack has been setup)
  66       if (!candidate.safe_for_sender(_thread)) {
  67         return false;
  68       }
  69       nmethod* nm = (nmethod*)candidate.cb();
  70       *method = nm->method();
  71 
  72       if (_in_java) {
  73         PcDesc* pc_desc = nm->pc_desc_near(candidate.pc() + 1);