28 #include "runtime/thread.inline.hpp"
  29 
  30 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is
  31 // currently interrupted by SIGPROF
  32 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
  33   void* ucontext, bool isInJava) {
  34   assert(Thread::current() == this, "caller must be current thread");
  35   return pd_get_top_frame(fr_addr, ucontext, isInJava);
  36 }
  37 
  38 bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr,
  39   void* ucontext, bool isInJava) {
  40   return pd_get_top_frame(fr_addr, ucontext, isInJava);
  41 }
  42 
  43 bool JavaThread::pd_get_top_frame(frame* fr_addr,
  44   void* ucontext, bool isInJava) {
  45   assert(this->is_Java_thread(), "must be JavaThread");
  46   JavaThread* jt = (JavaThread *)this;
  47 
  48   // last_Java_frame is always walkable and safe use it if we have it
  49 
  50   if (jt->has_last_Java_frame()) {
  51     *fr_addr = jt->pd_last_frame();
  52     return true;
  53   }
  54 
  55   ucontext_t* uc = (ucontext_t*) ucontext;
  56 
  57   // We always want to use the initial frame we create from the ucontext as
  58   // it certainly signals where we currently are. However that frame may not
  59   // be safe for calling sender. In that case if we have a last_Java_frame
  60   // then the forte walker will switch to that frame as the virtual sender
  61   // for the frame we create here which is not sender safe.
  62 
  63   intptr_t* ret_fp;
  64   intptr_t* ret_sp;
  65   ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp);
  66 
  67   // Something would really have to be screwed up to get a NULL pc
  68 
  69   if (addr.pc() == NULL) {
  70     assert(false, "NULL pc from signal handler!");

  28 #include "runtime/thread.inline.hpp"
  29 
  30 // For Forte Analyzer AsyncGetCallTrace profiling support - thread is
  31 // currently interrupted by SIGPROF
  32 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr,
  33   void* ucontext, bool isInJava) {
  34   assert(Thread::current() == this, "caller must be current thread");
  35   return pd_get_top_frame(fr_addr, ucontext, isInJava);
  36 }
  37 
  38 bool JavaThread::pd_get_top_frame_for_profiling(frame* fr_addr,
  39   void* ucontext, bool isInJava) {
  40   return pd_get_top_frame(fr_addr, ucontext, isInJava);
  41 }
  42 
  43 bool JavaThread::pd_get_top_frame(frame* fr_addr,
  44   void* ucontext, bool isInJava) {
  45   assert(this->is_Java_thread(), "must be JavaThread");
  46   JavaThread* jt = (JavaThread *)this;
  47 
  48   // There is small window where last_Java_frame is not walkable or safe
  49   if (jt->has_last_Java_frame() && jt->frame_anchor()->walkable()) {

  50     *fr_addr = jt->pd_last_frame();
  51     return true;
  52   }
  53 
  54   ucontext_t* uc = (ucontext_t*) ucontext;
  55 
  56   // We always want to use the initial frame we create from the ucontext as
  57   // it certainly signals where we currently are. However that frame may not
  58   // be safe for calling sender. In that case if we have a last_Java_frame
  59   // then the forte walker will switch to that frame as the virtual sender
  60   // for the frame we create here which is not sender safe.
  61 
  62   intptr_t* ret_fp;
  63   intptr_t* ret_sp;
  64   ExtendedPC addr = os::Solaris::fetch_frame_from_ucontext(this, uc, &ret_sp, &ret_fp);
  65 
  66   // Something would really have to be screwed up to get a NULL pc
  67 
  68   if (addr.pc() == NULL) {
  69     assert(false, "NULL pc from signal handler!");