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8152957: Improve specificity of safepoint logging to print safepoint type

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Upgrade safepoint begin logs to Info logging, which has the reason.

Reviewed-by: dholmes, hseigel, zgu
This commit is contained in:
Coleen Phillimore 2017-12-20 10:05:09 -05:00
parent 670ac3b236
commit 114c1a7a69
1 changed files with 4 additions and 6 deletions
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10
src/hotspot/share/runtime/safepoint.cpp
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@ -103,7 +103,7 @@ void SafepointSynchronize::begin() {
int nof_threads = Threads::number_of_threads();
log_debug(safepoint)("Safepoint synchronization initiated. (%d)", nof_threads);
log_debug(safepoint)("Safepoint synchronization initiated. (%d threads)", nof_threads);
RuntimeService::record_safepoint_begin();
@ -407,9 +407,7 @@ void SafepointSynchronize::begin() {
// Update the count of active JNI critical regions
GCLocker::set_jni_lock_count(_current_jni_active_count);
if (log_is_enabled(Debug, safepoint)) {
log_debug(safepoint)("Entering safepoint region: %s", VMThread::vm_safepoint_description());
}
log_info(safepoint)("Entering safepoint region: %s", VMThread::vm_safepoint_description());
RuntimeService::record_safepoint_synchronized();
if (PrintSafepointStatistics) {
@ -496,14 +494,14 @@ void SafepointSynchronize::end() {
cur_state->restart(); // TSS _running
SafepointMechanism::disarm_local_poll(current); // release store, local state -> polling page
}
log_debug(safepoint)("Leaving safepoint region");
log_info(safepoint)("Leaving safepoint region");
} else {
// Set to not synchronized, so the threads will not go into the signal_thread_blocked method
// when they get restarted.
_state = _not_synchronized;
OrderAccess::fence();
log_debug(safepoint)("Leaving safepoint region");
log_info(safepoint)("Leaving safepoint region");
// Start suspended threads
jtiwh.rewind();