495 void StackWalkCompPolicy::method_invocation_event(methodHandle m, JavaThread* thread) {
496 const int comp_level = CompLevel_highest_tier;
497 const int hot_count = m->invocation_count();
498 reset_counter_for_invocation_event(m);
499 const char* comment = "count";
500
501 if (is_compilation_enabled() && m->code() == NULL && can_be_compiled(m, comp_level)) {
502 ResourceMark rm(thread);
503 frame fr = thread->last_frame();
504 assert(fr.is_interpreted_frame(), "must be interpreted");
505 assert(fr.interpreter_frame_method() == m(), "bad method");
506
507 if (TraceCompilationPolicy) {
508 tty->print("method invocation trigger: ");
509 m->print_short_name(tty);
510 tty->print(" ( interpreted " INTPTR_FORMAT ", size=%d ) ", p2i((address)m()), m->code_size());
511 }
512 RegisterMap reg_map(thread, false);
513 javaVFrame* triggerVF = thread->last_java_vframe(®_map);
514 // triggerVF is the frame that triggered its counter
515 RFrame* first = new InterpretedRFrame(triggerVF->fr(), thread, m);
516
517 if (first->top_method()->code() != NULL) {
518 // called obsolete method/nmethod -- no need to recompile
519 if (TraceCompilationPolicy) tty->print_cr(" --> " INTPTR_FORMAT, p2i(first->top_method()->code()));
520 } else {
521 if (TimeCompilationPolicy) accumulated_time()->start();
522 GrowableArray<RFrame*>* stack = new GrowableArray<RFrame*>(50);
523 stack->push(first);
524 RFrame* top = findTopInlinableFrame(stack);
525 if (TimeCompilationPolicy) accumulated_time()->stop();
526 assert(top != NULL, "findTopInlinableFrame returned null");
527 if (TraceCompilationPolicy) top->print();
528 CompileBroker::compile_method(top->top_method(), InvocationEntryBci, comp_level,
529 m, hot_count, comment, thread);
530 }
531 }
532 }
533
534 void StackWalkCompPolicy::method_back_branch_event(methodHandle m, int bci, JavaThread* thread) {
535 const int comp_level = CompLevel_highest_tier;
540 CompileBroker::compile_method(m, bci, comp_level, m, hot_count, comment, thread);
541 NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, comp_level, true));)
542 }
543 }
544
545 RFrame* StackWalkCompPolicy::findTopInlinableFrame(GrowableArray<RFrame*>* stack) {
546 // go up the stack until finding a frame that (probably) won't be inlined
547 // into its caller
548 RFrame* current = stack->at(0); // current choice for stopping
549 assert( current && !current->is_compiled(), "" );
550 const char* msg = NULL;
551
552 while (1) {
553
554 // before going up the stack further, check if doing so would get us into
555 // compiled code
556 RFrame* next = senderOf(current, stack);
557 if( !next ) // No next frame up the stack?
558 break; // Then compile with current frame
559
560 methodHandle m = current->top_method();
561 methodHandle next_m = next->top_method();
562
563 if (TraceCompilationPolicy && Verbose) {
564 tty->print("[caller: ");
565 next_m->print_short_name(tty);
566 tty->print("] ");
567 }
568
569 if( !Inline ) { // Inlining turned off
570 msg = "Inlining turned off";
571 break;
572 }
573 if (next_m->is_not_compilable()) { // Did fail to compile this before/
574 msg = "caller not compilable";
575 break;
576 }
577 if (next->num() > MaxRecompilationSearchLength) {
578 // don't go up too high when searching for recompilees
579 msg = "don't go up any further: > MaxRecompilationSearchLength";
580 break;
581 }
627 if ((msg = shouldNotInline(m)) != NULL) {
628 break;
629 }
630
631
632 // If the caller method is too big or something then we do not want to
633 // compile it just to inline a method
634 if (!can_be_compiled(next_m, CompLevel_any)) {
635 msg = "caller cannot be compiled";
636 break;
637 }
638
639 if( next_m->name() == vmSymbols::class_initializer_name() ) {
640 msg = "do not compile class initializer (OSR ok)";
641 break;
642 }
643
644 if (TraceCompilationPolicy && Verbose) {
645 tty->print("\n\t check caller: ");
646 next_m->print_short_name(tty);
647 tty->print(" ( interpreted " INTPTR_FORMAT ", size=%d ) ", p2i((address)next_m()), next_m->code_size());
648 }
649
650 current = next;
651 }
652
653 assert( !current || !current->is_compiled(), "" );
654
655 if (TraceCompilationPolicy && msg) tty->print("(%s)\n", msg);
656
657 return current;
658 }
659
660 RFrame* StackWalkCompPolicy::senderOf(RFrame* rf, GrowableArray<RFrame*>* stack) {
661 RFrame* sender = rf->caller();
662 if (sender && sender->num() == stack->length()) stack->push(sender);
663 return sender;
664 }
665
666
667 const char* StackWalkCompPolicy::shouldInline(methodHandle m, float freq, int cnt) {
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495 void StackWalkCompPolicy::method_invocation_event(methodHandle m, JavaThread* thread) {
496 const int comp_level = CompLevel_highest_tier;
497 const int hot_count = m->invocation_count();
498 reset_counter_for_invocation_event(m);
499 const char* comment = "count";
500
501 if (is_compilation_enabled() && m->code() == NULL && can_be_compiled(m, comp_level)) {
502 ResourceMark rm(thread);
503 frame fr = thread->last_frame();
504 assert(fr.is_interpreted_frame(), "must be interpreted");
505 assert(fr.interpreter_frame_method() == m(), "bad method");
506
507 if (TraceCompilationPolicy) {
508 tty->print("method invocation trigger: ");
509 m->print_short_name(tty);
510 tty->print(" ( interpreted " INTPTR_FORMAT ", size=%d ) ", p2i((address)m()), m->code_size());
511 }
512 RegisterMap reg_map(thread, false);
513 javaVFrame* triggerVF = thread->last_java_vframe(®_map);
514 // triggerVF is the frame that triggered its counter
515 RFrame* first = new InterpretedRFrame(triggerVF->fr(), thread, m());
516
517 if (first->top_method()->code() != NULL) {
518 // called obsolete method/nmethod -- no need to recompile
519 if (TraceCompilationPolicy) tty->print_cr(" --> " INTPTR_FORMAT, p2i(first->top_method()->code()));
520 } else {
521 if (TimeCompilationPolicy) accumulated_time()->start();
522 GrowableArray<RFrame*>* stack = new GrowableArray<RFrame*>(50);
523 stack->push(first);
524 RFrame* top = findTopInlinableFrame(stack);
525 if (TimeCompilationPolicy) accumulated_time()->stop();
526 assert(top != NULL, "findTopInlinableFrame returned null");
527 if (TraceCompilationPolicy) top->print();
528 CompileBroker::compile_method(top->top_method(), InvocationEntryBci, comp_level,
529 m, hot_count, comment, thread);
530 }
531 }
532 }
533
534 void StackWalkCompPolicy::method_back_branch_event(methodHandle m, int bci, JavaThread* thread) {
535 const int comp_level = CompLevel_highest_tier;
540 CompileBroker::compile_method(m, bci, comp_level, m, hot_count, comment, thread);
541 NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, comp_level, true));)
542 }
543 }
544
545 RFrame* StackWalkCompPolicy::findTopInlinableFrame(GrowableArray<RFrame*>* stack) {
546 // go up the stack until finding a frame that (probably) won't be inlined
547 // into its caller
548 RFrame* current = stack->at(0); // current choice for stopping
549 assert( current && !current->is_compiled(), "" );
550 const char* msg = NULL;
551
552 while (1) {
553
554 // before going up the stack further, check if doing so would get us into
555 // compiled code
556 RFrame* next = senderOf(current, stack);
557 if( !next ) // No next frame up the stack?
558 break; // Then compile with current frame
559
560 Method* m = current->top_method();
561 Method* next_m = next->top_method();
562
563 if (TraceCompilationPolicy && Verbose) {
564 tty->print("[caller: ");
565 next_m->print_short_name(tty);
566 tty->print("] ");
567 }
568
569 if( !Inline ) { // Inlining turned off
570 msg = "Inlining turned off";
571 break;
572 }
573 if (next_m->is_not_compilable()) { // Did fail to compile this before/
574 msg = "caller not compilable";
575 break;
576 }
577 if (next->num() > MaxRecompilationSearchLength) {
578 // don't go up too high when searching for recompilees
579 msg = "don't go up any further: > MaxRecompilationSearchLength";
580 break;
581 }
627 if ((msg = shouldNotInline(m)) != NULL) {
628 break;
629 }
630
631
632 // If the caller method is too big or something then we do not want to
633 // compile it just to inline a method
634 if (!can_be_compiled(next_m, CompLevel_any)) {
635 msg = "caller cannot be compiled";
636 break;
637 }
638
639 if( next_m->name() == vmSymbols::class_initializer_name() ) {
640 msg = "do not compile class initializer (OSR ok)";
641 break;
642 }
643
644 if (TraceCompilationPolicy && Verbose) {
645 tty->print("\n\t check caller: ");
646 next_m->print_short_name(tty);
647 tty->print(" ( interpreted " INTPTR_FORMAT ", size=%d ) ", p2i((address)next_m), next_m->code_size());
648 }
649
650 current = next;
651 }
652
653 assert( !current || !current->is_compiled(), "" );
654
655 if (TraceCompilationPolicy && msg) tty->print("(%s)\n", msg);
656
657 return current;
658 }
659
660 RFrame* StackWalkCompPolicy::senderOf(RFrame* rf, GrowableArray<RFrame*>* stack) {
661 RFrame* sender = rf->caller();
662 if (sender && sender->num() == stack->length()) stack->push(sender);
663 return sender;
664 }
665
666
667 const char* StackWalkCompPolicy::shouldInline(methodHandle m, float freq, int cnt) {
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