src/share/vm/utilities/debug.cpp
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rev 7023 : 8058345: Refactor native stack printing from vmError.cpp to debug.cpp to make it available in gdb as well
@@ -663,5 +663,56 @@
tty->print_cr(" debug() - to set things up for compiler debugging");
tty->print_cr(" ndebug() - undo debug");
}
#endif // !PRODUCT
+
+void print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
+
+ // see if it's a valid frame
+ if (fr.pc()) {
+ st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
+
+ int count = 0;
+ while (count++ < StackPrintLimit) {
+ fr.print_on_error(st, buf, buf_size);
+ st->cr();
+ // Compiled code may use EBP register on x86 so it looks like
+ // non-walkable C frame. Use frame.sender() for java frames.
+ if (t && t->is_Java_thread()) {
+ // Catch very first native frame by using stack address.
+ // For JavaThread stack_base and stack_size should be set.
+ if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
+ break;
+ }
+ if (fr.is_java_frame() || fr.is_native_frame()) {
+ RegisterMap map((JavaThread*)t, false); // No update
+ fr = fr.sender(&map);
+ } else {
+ fr = os::get_sender_for_C_frame(&fr);
+ }
+ } else {
+ // is_first_C_frame() does only simple checks for frame pointer,
+ // it will pass if java compiled code has a pointer in EBP.
+ if (os::is_first_C_frame(&fr)) break;
+ fr = os::get_sender_for_C_frame(&fr);
+ }
+ }
+
+ if (count > StackPrintLimit) {
+ st->print_cr("...<more frames>...");
+ }
+
+ st->cr();
+ }
+}
+
+#ifndef PRODUCT
+
+extern "C" void pns(frame fr) { // print native stack
+ Command c("pns");
+ static char buf[O_BUFLEN];
+ Thread* t = ThreadLocalStorage::get_thread_slow();
+ print_native_stack(tty, fr, t, buf, sizeof(buf));
+}
+
+#endif // !PRODUCT