8191049: Add alternate version of pns() that is callable from within hotspot source
Added pns2() to debug.cpp
Reviewed-by: stuefe, gthornbr
diff --git a/src/hotspot/share/utilities/debug.cpp b/src/hotspot/share/utilities/debug.cpp
index ad19b5f..a17429c 100644
--- a/src/hotspot/share/utilities/debug.cpp
+++ b/src/hotspot/share/utilities/debug.cpp
@@ -631,6 +631,27 @@
VMError::print_native_stack(tty, fr, t, buf, sizeof(buf));
}
+//
+// This version of pns() will not work when called from the debugger, but is
+// useful when called from within hotspot code. The advantages over pns()
+// are not having to pass in any arguments, and it will work on Windows/x64.
+//
+// WARNING: Only intended for use when debugging. Do not leave calls to
+// pns2() in committed source (product or debug).
+//
+extern "C" void pns2() { // print native stack
+ Command c("pns2");
+ static char buf[O_BUFLEN];
+ if (os::platform_print_native_stack(tty, NULL, buf, sizeof(buf))) {
+ // We have printed the native stack in platform-specific code,
+ // so nothing else to do in this case.
+ } else {
+ Thread* t = Thread::current_or_null();
+ frame fr = os::current_frame();
+ VMError::print_native_stack(tty, fr, t, buf, sizeof(buf));
+ }
+}
+
#endif // !PRODUCT
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