archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 23:04:50 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8058345: Refactor native stack printing from vmError.cpp to debug.cpp to make it available in gdb as well

Browse source 
Also fix stack trace on x86 to enable walking of runtime stubs and native wrappers

Reviewed-by: kvn
This commit is contained in:
Volker Simonis 2014-09-24 12:19:07 -07:00
parent f85f7d2832
commit a1628426d3
12 changed files with 117 additions and 41 deletions
Download patch file Download diff file Expand all files Collapse all files

60
hotspot/src/share/vm/utilities/debug.cpp
View file

@ -653,6 +653,13 @@ void help() {
tty->print_cr(" pm(int pc) - print Method* given compiled PC");
tty->print_cr(" findm(intptr_t pc) - finds Method*");
tty->print_cr(" find(intptr_t x) - finds & prints nmethod/stub/bytecode/oop based on pointer into it");
tty->print_cr(" pns(void* sp, void* fp, void* pc) - print native (i.e. mixed) stack trace. E.g.");
tty->print_cr(" pns($sp, $rbp, $pc) on Linux/amd64 and Solaris/amd64 or");
tty->print_cr(" pns($sp, $ebp, $pc) on Linux/x86 or");
tty->print_cr(" pns($sp, 0, $pc) on Linux/ppc64 or");
tty->print_cr(" pns($sp + 0x7ff, 0, $pc) on Solaris/SPARC");
tty->print_cr(" - in gdb do 'set overload-resolution off' before calling pns()");
tty->print_cr(" - in dbx do 'frame 1' before calling pns()");
tty->print_cr("misc.");
tty->print_cr(" flush() - flushes the log file");
@ -665,3 +672,56 @@ void help() {
}
#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() || fr.is_runtime_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(void* sp, void* fp, void* pc) { // print native stack
Command c("pns");
static char buf[O_BUFLEN];
Thread* t = ThreadLocalStorage::get_thread_slow();
// Call generic frame constructor (certain arguments may be ignored)
frame fr(sp, fp, pc);
print_native_stack(tty, fr, t, buf, sizeof(buf));
}
#endif // !PRODUCT