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8275908: Record null_check traps for calls and array_check traps in the interpreter

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Reviewed-by: chagedorn, mdoerr
This commit is contained in:
Volker Simonis 2021-11-26 16:21:15 +00:00
parent 3d810ad691
commit 40fef2311c
9 changed files with 636 additions and 9 deletions
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32
src/hotspot/share/runtime/deoptimization.cpp
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@ -2608,6 +2608,30 @@ jint Deoptimization::total_deoptimization_count() {
return _deoptimization_hist[Reason_none][0][0];
}
// Get the deopt count for a specific reason and a specific action. If either
// one of 'reason' or 'action' is null, the method returns the sum of all
// deoptimizations with the specific 'action' or 'reason' respectively.
// If both arguments are null, the method returns the total deopt count.
jint Deoptimization::deoptimization_count(const char *reason_str, const char *action_str) {
if (reason_str == NULL && action_str == NULL) {
return total_deoptimization_count();
}
juint counter = 0;
for (int reason = 0; reason < Reason_LIMIT; reason++) {
if (reason_str == NULL || !strcmp(reason_str, trap_reason_name(reason))) {
for (int action = 0; action < Action_LIMIT; action++) {
if (action_str == NULL || !strcmp(action_str, trap_action_name(action))) {
juint* cases = _deoptimization_hist[reason][1+action];
for (int bc_case = 0; bc_case < BC_CASE_LIMIT; bc_case++) {
counter += cases[bc_case] >> LSB_BITS;
}
}
}
}
}
return counter;
}
void Deoptimization::print_statistics() {
juint total = total_deoptimization_count();
juint account = total;
@ -2661,6 +2685,14 @@ const char* Deoptimization::trap_reason_name(int reason) {
return "unknown";
}
jint Deoptimization::total_deoptimization_count() {
return 0;
}
jint Deoptimization::deoptimization_count(const char *reason_str, const char *action_str) {
return 0;
}
void Deoptimization::print_statistics() {
// no output
}