// Handle the back branch event. Notice that we can compile the method
// with a regular entry from here.
void AdvancedThresholdPolicy::method_back_branch_event(methodHandle mh, methodHandle imh,
int bci, CompLevel level, TRAPS) {
if (should_create_mdo(mh(), level)) {
create_mdo(mh, THREAD);
}
// If the method is already compiling, quickly bail out.
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, bci)) {
// Use loop event as an opportinity to also check there's been
// enough calls.
CompLevel cur_level = comp_level(mh());
CompLevel next_level = call_event(mh(), cur_level);
CompLevel next_osr_level = loop_event(mh(), level);
if (next_osr_level == CompLevel_limited_profile) {
next_osr_level = CompLevel_full_profile; // OSRs are supposed to be for very hot methods.
}
next_level = MAX2(next_level,
next_osr_level < CompLevel_full_optimization ? next_osr_level : cur_level);
bool is_compiling = false;
if (next_level != cur_level) {
compile(mh, InvocationEntryBci, next_level, THREAD);
is_compiling = true;
}
// Do the OSR version
if (!is_compiling && next_osr_level != level) {
compile(mh, bci, next_osr_level, THREAD);
}
}
}
void SimpleCompPolicy::method_back_branch_event(methodHandle m, int bci, JavaThread* thread) {
int hot_count = m->backedge_count();
const char* comment = "backedge_count";
if (is_compilation_enabled() && !m->is_not_osr_compilable() && can_be_compiled(m)) {
CompileBroker::compile_method(m, bci, CompLevel_highest_tier,
m, hot_count, comment, thread);
NOT_PRODUCT(trace_osr_completion(m->lookup_osr_nmethod_for(bci, CompLevel_highest_tier, true));)
}
// Handle the invocation event.
void SimpleThresholdPolicy::method_invocation_event(const methodHandle& mh, const methodHandle& imh,
CompLevel level, CompiledMethod* nm, JavaThread* thread) {
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh)) {
CompLevel next_level = call_event(mh(), level, thread);
if (next_level != level) {
compile(mh, InvocationEntryBci, next_level, thread);
}
}
}
// Handle the invocation event.
void AdvancedThresholdPolicy::method_invocation_event(methodHandle mh, methodHandle imh,
CompLevel level, TRAPS) {
if (should_create_mdo(mh(), level)) {
create_mdo(mh, THREAD);
}
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh, InvocationEntryBci)) {
CompLevel next_level = call_event(mh(), level);
if (next_level != level) {
compile(mh, InvocationEntryBci, next_level, THREAD);
}
}
}
void SimpleCompPolicy::method_invocation_event(const methodHandle& m, JavaThread* thread) {
const int comp_level = CompLevel_highest_tier;
const int hot_count = m->invocation_count();
reset_counter_for_invocation_event(m);
const char* comment = "count";
if (is_compilation_enabled() && can_be_compiled(m, comp_level)) {
nmethod* nm = m->code();
if (nm == NULL ) {
CompileBroker::compile_method(m, InvocationEntryBci, comp_level, m, hot_count, comment, thread);
}
}
}
// Handle the back branch event. Notice that we can compile the method
// with a regular entry from here.
void SimpleThresholdPolicy::method_back_branch_event(const methodHandle& mh, const methodHandle& imh,
int bci, CompLevel level, CompiledMethod* nm, JavaThread* thread) {
// If the method is already compiling, quickly bail out.
if (is_compilation_enabled() && !CompileBroker::compilation_is_in_queue(mh)) {
// Use loop event as an opportunity to also check there's been
// enough calls.
CompLevel cur_level = comp_level(mh());
CompLevel next_level = call_event(mh(), cur_level, thread);
CompLevel next_osr_level = loop_event(mh(), level, thread);
next_level = MAX2(next_level,
next_osr_level < CompLevel_full_optimization ? next_osr_level : cur_level);
bool is_compiling = false;
if (next_level != cur_level) {
compile(mh, InvocationEntryBci, next_level, thread);
is_compiling = true;
}
// Do the OSR version
if (!is_compiling && next_osr_level != level) {
compile(mh, bci, next_osr_level, thread);
}
}
}
// Handle the back branch event. Notice that we can compile the method
// with a regular entry from here.
void AdvancedThresholdPolicy::method_back_branch_event(const methodHandle& mh, const methodHandle& imh,
int bci, CompLevel level, nmethod* nm, JavaThread* thread) {
if (should_create_mdo(mh(), level)) {
create_mdo(mh, thread);
}
// Check if MDO should be created for the inlined method
if (should_create_mdo(imh(), level)) {
create_mdo(imh, thread);
}
if (is_compilation_enabled()) {
CompLevel next_osr_level = loop_event(imh(), level);
CompLevel max_osr_level = (CompLevel)imh->highest_osr_comp_level();
// At the very least compile the OSR version
if (!CompileBroker::compilation_is_in_queue(imh) && (next_osr_level != level)) {
compile(imh, bci, next_osr_level, thread);
}
// Use loop event as an opportunity to also check if there's been
// enough calls.
CompLevel cur_level, next_level;
if (mh() != imh()) { // If there is an enclosing method
guarantee(nm != NULL, "Should have nmethod here");
cur_level = comp_level(mh());
next_level = call_event(mh(), cur_level);
if (max_osr_level == CompLevel_full_optimization) {
// The inlinee OSRed to full opt, we need to modify the enclosing method to avoid deopts
bool make_not_entrant = false;
if (nm->is_osr_method()) {
// This is an osr method, just make it not entrant and recompile later if needed
make_not_entrant = true;
} else {
if (next_level != CompLevel_full_optimization) {
// next_level is not full opt, so we need to recompile the
// enclosing method without the inlinee
cur_level = CompLevel_none;
make_not_entrant = true;
}
}
if (make_not_entrant) {
if (PrintTieredEvents) {
int osr_bci = nm->is_osr_method() ? nm->osr_entry_bci() : InvocationEntryBci;
print_event(MAKE_NOT_ENTRANT, mh(), mh(), osr_bci, level);
}
nm->make_not_entrant();
}
}
if (!CompileBroker::compilation_is_in_queue(mh)) {
// Fix up next_level if necessary to avoid deopts
if (next_level == CompLevel_limited_profile && max_osr_level == CompLevel_full_profile) {
next_level = CompLevel_full_profile;
}
if (cur_level != next_level) {
compile(mh, InvocationEntryBci, next_level, thread);
}
}
} else {
cur_level = comp_level(imh());
next_level = call_event(imh(), cur_level);
if (!CompileBroker::compilation_is_in_queue(imh) && (next_level != cur_level)) {
compile(imh, InvocationEntryBci, next_level, thread);
}
}
}
}