1.1 --- a/src/share/vm/utilities/debug.cpp Mon Dec 15 18:11:51 2014 +0400
1.2 +++ b/src/share/vm/utilities/debug.cpp Wed Sep 24 12:19:07 2014 -0700
1.3 @@ -666,6 +666,13 @@
1.4 tty->print_cr(" pm(int pc) - print Method* given compiled PC");
1.5 tty->print_cr(" findm(intptr_t pc) - finds Method*");
1.6 tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it");
1.7 + tty->print_cr(" pns(void* sp, void* fp, void* pc) - print native (i.e. mixed) stack trace. E.g.");
1.8 + tty->print_cr(" pns($sp, $rbp, $pc) on Linux/amd64 and Solaris/amd64 or");
1.9 + tty->print_cr(" pns($sp, $ebp, $pc) on Linux/x86 or");
1.10 + tty->print_cr(" pns($sp, 0, $pc) on Linux/ppc64 or");
1.11 + tty->print_cr(" pns($sp + 0x7ff, 0, $pc) on Solaris/SPARC");
1.12 + tty->print_cr(" - in gdb do 'set overload-resolution off' before calling pns()");
1.13 + tty->print_cr(" - in dbx do 'frame 1' before calling pns()");
1.14
1.15 tty->print_cr("misc.");
1.16 tty->print_cr(" flush() - flushes the log file");
1.17 @@ -678,3 +685,56 @@
1.18 }
1.19
1.20 #endif // !PRODUCT
1.21 +
1.22 +void print_native_stack(outputStream* st, frame fr, Thread* t, char* buf, int buf_size) {
1.23 +
1.24 + // see if it's a valid frame
1.25 + if (fr.pc()) {
1.26 + st->print_cr("Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)");
1.27 +
1.28 + int count = 0;
1.29 + while (count++ < StackPrintLimit) {
1.30 + fr.print_on_error(st, buf, buf_size);
1.31 + st->cr();
1.32 + // Compiled code may use EBP register on x86 so it looks like
1.33 + // non-walkable C frame. Use frame.sender() for java frames.
1.34 + if (t && t->is_Java_thread()) {
1.35 + // Catch very first native frame by using stack address.
1.36 + // For JavaThread stack_base and stack_size should be set.
1.37 + if (!t->on_local_stack((address)(fr.real_fp() + 1))) {
1.38 + break;
1.39 + }
1.40 + if (fr.is_java_frame() || fr.is_native_frame() || fr.is_runtime_frame()) {
1.41 + RegisterMap map((JavaThread*)t, false); // No update
1.42 + fr = fr.sender(&map);
1.43 + } else {
1.44 + fr = os::get_sender_for_C_frame(&fr);
1.45 + }
1.46 + } else {
1.47 + // is_first_C_frame() does only simple checks for frame pointer,
1.48 + // it will pass if java compiled code has a pointer in EBP.
1.49 + if (os::is_first_C_frame(&fr)) break;
1.50 + fr = os::get_sender_for_C_frame(&fr);
1.51 + }
1.52 + }
1.53 +
1.54 + if (count > StackPrintLimit) {
1.55 + st->print_cr("...<more frames>...");
1.56 + }
1.57 +
1.58 + st->cr();
1.59 + }
1.60 +}
1.61 +
1.62 +#ifndef PRODUCT
1.63 +
1.64 +extern "C" void pns(void* sp, void* fp, void* pc) { // print native stack
1.65 + Command c("pns");
1.66 + static char buf[O_BUFLEN];
1.67 + Thread* t = ThreadLocalStorage::get_thread_slow();
1.68 + // Call generic frame constructor (certain arguments may be ignored)
1.69 + frame fr(sp, fp, pc);
1.70 + print_native_stack(tty, fr, t, buf, sizeof(buf));
1.71 +}
1.72 +
1.73 +#endif // !PRODUCT
