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8191049: Add alternate version of pns() that is callable from within hotspot source

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Added pns2() to debug.cpp

Reviewed-by: stuefe, gthornbr
This commit is contained in:
Chris Plummer 2017-11-14 18:08:35 -08:00
parent b70a8ea0f4
commit 2fa7cd4d09
1 changed files with 21 additions and 0 deletions
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21
src/hotspot/share/utilities/debug.cpp
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@ -631,6 +631,27 @@ extern "C" void pns(void* sp, void* fp, void* pc) { // print native stack
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
//////////////////////////////////////////////////////////////////////////////