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8028412: AsyncGetCallTrace() is broken on x86 in JDK 7u40

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Reviewed-by: kvn, sspitsyn
This commit is contained in:
Markus Grönlund 2013-12-05 12:35:38 +01:00
parent 62e1b6eddd
commit cd7d5ca125
1 changed files with 5 additions and 7 deletions
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12
hotspot/src/cpu/x86/vm/frame_x86.cpp
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@ -94,13 +94,6 @@ bool frame::safe_for_sender(JavaThread *thread) {
// other generic buffer blobs are more problematic so we just assume they are
// ok. adapter blobs never have a frame complete and are never ok.
// check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
if (!Interpreter::contains(_pc) && _cb->frame_size() <= 0) {
//assert(0, "Invalid frame_size");
return false;
}
if (!_cb->is_frame_complete_at(_pc)) {
if (_cb->is_nmethod() || _cb->is_adapter_blob() || _cb->is_runtime_stub()) {
return false;
@ -144,6 +137,11 @@ bool frame::safe_for_sender(JavaThread *thread) {
// must be some sort of compiled/runtime frame
// fp does not have to be safe (although it could be check for c1?)
// check for a valid frame_size, otherwise we are unlikely to get a valid sender_pc
if (_cb->frame_size() <= 0) {
return false;
}
sender_sp = _unextended_sp + _cb->frame_size();
// On Intel the return_address is always the word on the stack
sender_pc = (address) *(sender_sp-1);