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8240588: _threadObj cannot be used on an exiting JavaThread

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Reviewed-by: rehn, dcubed, kbarrett
This commit is contained in:
David Holmes 2020-05-13 22:29:54 -04:00
parent be7771b2b9
commit 17dd7dc38c
8 changed files with 266 additions and 3 deletions
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12
src/hotspot/share/runtime/thread.cpp
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@ -2169,6 +2169,14 @@ void JavaThread::exit(bool destroy_vm, ExitType exit_type) {
JvmtiExport::cleanup_thread(this);
}
// We need to cache the thread name for logging purposes below as once
// we have called on_thread_detach this thread must not access any oops.
char* thread_name = NULL;
if (log_is_enabled(Debug, os, thread, timer)) {
ResourceMark rm(this);
thread_name = os::strdup(get_thread_name());
}
// We must flush any deferred card marks and other various GC barrier
// related buffers (e.g. G1 SATB buffer and G1 dirty card queue buffer)
// before removing a thread from the list of active threads.
@ -2187,17 +2195,17 @@ void JavaThread::exit(bool destroy_vm, ExitType exit_type) {
if (log_is_enabled(Debug, os, thread, timer)) {
_timer_exit_phase4.stop();
ResourceMark rm(this);
log_debug(os, thread, timer)("name='%s'"
", exit-phase1=" JLONG_FORMAT
", exit-phase2=" JLONG_FORMAT
", exit-phase3=" JLONG_FORMAT
", exit-phase4=" JLONG_FORMAT,
get_thread_name(),
thread_name,
_timer_exit_phase1.milliseconds(),
_timer_exit_phase2.milliseconds(),
_timer_exit_phase3.milliseconds(),
_timer_exit_phase4.milliseconds());
os::free(thread_name);
}
}