< prev index next >

src/hotspot/os_cpu/linux_s390/thread_linux_s390.cpp

Print this page




  46 
  47   // If we have a last_Java_frame, then we should use it even if
  48   // isInJava == true.  It should be more reliable than ucontext info.
  49   if (has_last_Java_frame() && frame_anchor()->walkable()) {
  50     *fr_addr = pd_last_frame();
  51     return true;
  52   }
  53 
  54   if (isInJava) {
  55     ucontext_t* uc = (ucontext_t*) ucontext;
  56     frame ret_frame((intptr_t*)uc->uc_mcontext.gregs[15/*Z_SP*/],
  57                    (address)uc->uc_mcontext.psw.addr);
  58 
  59     if (ret_frame.pc() == NULL) {
  60       // ucontext wasn't useful
  61       return false;
  62     }
  63 
  64     if (ret_frame.is_interpreted_frame()) {
  65       frame::z_ijava_state* istate = ret_frame.ijava_state_unchecked();
  66        if ((stack_base() >= (address)istate && (address)istate > stack_end()) ||
  67            MetaspaceObj::is_valid((Method*)(istate->method)) == false) {
  68          return false;
  69        }
  70        uint64_t reg_bcp = uc->uc_mcontext.gregs[13/*Z_BCP*/];
  71        uint64_t istate_bcp = istate->bcp;
  72        uint64_t code_start = (uint64_t)(((Method*)(istate->method))->code_base());
  73        uint64_t code_end = (uint64_t)(((Method*)istate->method)->code_base() + ((Method*)istate->method)->code_size());
  74        if (istate_bcp >= code_start && istate_bcp < code_end) {
  75          // we have a valid bcp, don't touch it, do nothing
  76        } else if (reg_bcp >= code_start && reg_bcp < code_end) {
  77          istate->bcp = reg_bcp;
  78        } else {
  79          return false;
  80        }
  81     }
  82     if (!ret_frame.safe_for_sender(this)) {
  83       // nothing else to try if the frame isn't good
  84       return false;
  85     }
  86     *fr_addr = ret_frame;
  87     return true;
  88   }
  89   // nothing else to try
  90   return false;
  91 }
  92 
  93 // Forte Analyzer AsyncGetCallTrace profiling support.
  94 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava) {
  95   return pd_get_top_frame_for_profiling(fr_addr, ucontext, isInJava);

  96 }
  97 
  98 void JavaThread::cache_global_variables() { }


  46 
  47   // If we have a last_Java_frame, then we should use it even if
  48   // isInJava == true.  It should be more reliable than ucontext info.
  49   if (has_last_Java_frame() && frame_anchor()->walkable()) {
  50     *fr_addr = pd_last_frame();
  51     return true;
  52   }
  53 
  54   if (isInJava) {
  55     ucontext_t* uc = (ucontext_t*) ucontext;
  56     frame ret_frame((intptr_t*)uc->uc_mcontext.gregs[15/*Z_SP*/],
  57                    (address)uc->uc_mcontext.psw.addr);
  58 
  59     if (ret_frame.pc() == NULL) {
  60       // ucontext wasn't useful
  61       return false;
  62     }
  63 
  64     if (ret_frame.is_interpreted_frame()) {
  65       frame::z_ijava_state* istate = ret_frame.ijava_state_unchecked();
  66        if ((stack_base() >= (address)istate && (address)istate > stack_end()) || !((Method*)(istate->method))->is_metaspace_object()) {

  67          return false;
  68        }
  69        uint64_t reg_bcp = uc->uc_mcontext.gregs[13/*Z_BCP*/];
  70        uint64_t istate_bcp = istate->bcp;
  71        uint64_t code_start = (uint64_t)(((Method*)(istate->method))->code_base());
  72        uint64_t code_end = (uint64_t)(((Method*)istate->method)->code_base() + ((Method*)istate->method)->code_size());
  73        if (istate_bcp >= code_start && istate_bcp < code_end) {
  74          // we have a valid bcp, don't touch it, do nothing
  75        } else if (reg_bcp >= code_start && reg_bcp < code_end) {
  76          istate->bcp = reg_bcp;
  77        } else {
  78          return false;
  79        }
  80     }
  81     if (!ret_frame.safe_for_sender(this)) {
  82       // nothing else to try if the frame isn't good
  83       return false;
  84     }
  85     *fr_addr = ret_frame;
  86     return true;
  87   }
  88   // nothing else to try
  89   return false;
  90 }
  91 
  92 // Forte Analyzer AsyncGetCallTrace profiling support is not implemented on Linux/S390x.
  93 bool JavaThread::pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext, bool isInJava) {
  94   Unimplemented();
  95   return false;
  96 }
  97 
  98 void JavaThread::cache_global_variables() { }
< prev index next >