archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-27 14:54:52 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8130448: thread dump improvements, comment additions, new diagnostics inspired by 8077392

Browse source 
Reviewed-by: dholmes, coleenp
This commit is contained in:
Daniel D. Daugherty 2015-07-14 09:33:20 -07:00
parent 055105c707
commit 0db4f21ce2
8 changed files with 136 additions and 75 deletions
Download patch file Download diff file Expand all files Collapse all files

28
hotspot/src/share/vm/runtime/synchronizer.cpp
View file

@ -40,6 +40,7 @@
#include "runtime/stubRoutines.hpp"
#include "runtime/synchronizer.hpp"
#include "runtime/thread.inline.hpp"
#include "runtime/vframe.hpp"
#include "utilities/dtrace.hpp"
#include "utilities/events.hpp"
#include "utilities/preserveException.hpp"
@ -927,8 +928,9 @@ static void InduceScavenge(Thread * Self, const char * Whence) {
if (ForceMonitorScavenge == 0 && Atomic::xchg (1, &ForceMonitorScavenge) == 0) {
if (ObjectMonitor::Knob_Verbose) {
::printf ("Monitor scavenge - Induced STW @%s (%d)\n", Whence, ForceMonitorScavenge) ;
::fflush(stdout);
tty->print_cr("INFO: Monitor scavenge - Induced STW @%s (%d)",
Whence, ForceMonitorScavenge) ;
tty->flush();
}
// Induce a 'null' safepoint to scavenge monitors
// Must VM_Operation instance be heap allocated as the op will be enqueue and posted
@ -937,8 +939,9 @@ static void InduceScavenge(Thread * Self, const char * Whence) {
VMThread::execute(new VM_ForceAsyncSafepoint());
if (ObjectMonitor::Knob_Verbose) {
::printf ("Monitor scavenge - STW posted @%s (%d)\n", Whence, ForceMonitorScavenge) ;
::fflush(stdout);
tty->print_cr("INFO: Monitor scavenge - STW posted @%s (%d)",
Whence, ForceMonitorScavenge) ;
tty->flush();
}
}
}
@ -1603,10 +1606,11 @@ void ObjectSynchronizer::deflate_idle_monitors() {
// Consider: audit gFreeList to ensure that gMonitorFreeCount and list agree.
if (ObjectMonitor::Knob_Verbose) {
::printf("Deflate: InCirc=%d InUse=%d Scavenged=%d ForceMonitorScavenge=%d : pop=%d free=%d\n",
nInCirculation, nInuse, nScavenged, ForceMonitorScavenge,
gMonitorPopulation, gMonitorFreeCount);
::fflush(stdout);
tty->print_cr("INFO: Deflate: InCirc=%d InUse=%d Scavenged=%d "
"ForceMonitorScavenge=%d : pop=%d free=%d",
nInCirculation, nInuse, nScavenged, ForceMonitorScavenge,
gMonitorPopulation, gMonitorFreeCount);
tty->flush();
}
ForceMonitorScavenge = 0; // Reset
@ -1643,6 +1647,14 @@ class ReleaseJavaMonitorsClosure: public MonitorClosure {
ReleaseJavaMonitorsClosure(Thread* thread) : THREAD(thread) {}
void do_monitor(ObjectMonitor* mid) {
if (mid->owner() == THREAD) {
if (ObjectMonitor::Knob_VerifyMatch != 0) {
Handle obj((oop) mid->object());
tty->print("INFO: unexpected locked object:");
javaVFrame::print_locked_object_class_name(tty, obj, "locked");
fatal(err_msg("exiting JavaThread=" INTPTR_FORMAT
" unexpectedly owns ObjectMonitor=" INTPTR_FORMAT,
THREAD, mid));
}
(void)mid->complete_exit(CHECK);
}
}