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This commit is contained in:
Vladimir Kozlov 2015-02-26 10:56:54 -08:00
commit 239370b736
1382 changed files with 52370 additions and 23387 deletions
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106
hotspot/src/share/vm/runtime/arguments.cpp
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@ -57,18 +57,6 @@
#define DEFAULT_VENDOR_URL_BUG "http://bugreport.java.com/bugreport/crash.jsp"
#define DEFAULT_JAVA_LAUNCHER "generic"
// Disable options not supported in this release, with a warning if they
// were explicitly requested on the command-line
#define UNSUPPORTED_OPTION(opt, description) \
do { \
if (opt) { \
if (FLAG_IS_CMDLINE(opt)) { \
warning(description " is disabled in this release."); \
} \
FLAG_SET_DEFAULT(opt, false); \
} \
} while(0)
#define UNSUPPORTED_GC_OPTION(gc) \
do { \
if (gc) { \
@ -121,8 +109,6 @@ SystemProperty *Arguments::_java_home = NULL;
SystemProperty *Arguments::_java_class_path = NULL;
SystemProperty *Arguments::_sun_boot_class_path = NULL;
char* Arguments::_meta_index_path = NULL;
char* Arguments::_meta_index_dir = NULL;
char* Arguments::_ext_dirs = NULL;
// Check if head of 'option' matches 'name', and sets 'tail' to the remaining
@ -1126,16 +1112,40 @@ static void no_shared_spaces(const char* message) {
}
#endif
// Returns threshold scaled with CompileThresholdScaling
intx Arguments::get_scaled_compile_threshold(intx threshold) {
return (intx)(threshold * CompileThresholdScaling);
// Returns threshold scaled with the value of scale.
// If scale < 0.0, threshold is returned without scaling.
intx Arguments::scaled_compile_threshold(intx threshold, double scale) {
if (scale == 1.0 || scale < 0.0) {
return threshold;
} else {
return (intx)(threshold * scale);
}
}
// Returns freq_log scaled with CompileThresholdScaling
intx Arguments::get_scaled_freq_log(intx freq_log) {
intx scaled_freq = get_scaled_compile_threshold((intx)1 << freq_log);
if (scaled_freq == 0) {
// Returns freq_log scaled with the value of scale.
// Returned values are in the range of [0, InvocationCounter::number_of_count_bits + 1].
// If scale < 0.0, freq_log is returned without scaling.
intx Arguments::scaled_freq_log(intx freq_log, double scale) {
// Check if scaling is necessary or if negative value was specified.
if (scale == 1.0 || scale < 0.0) {
return freq_log;
}
// Check values to avoid calculating log2 of 0.
if (scale == 0.0 || freq_log == 0) {
return 0;
}
// Determine the maximum notification frequency value currently supported.
// The largest mask value that the interpreter/C1 can handle is
// of length InvocationCounter::number_of_count_bits. Mask values are always
// one bit shorter then the value of the notification frequency. Set
// max_freq_bits accordingly.
intx max_freq_bits = InvocationCounter::number_of_count_bits + 1;
intx scaled_freq = scaled_compile_threshold((intx)1 << freq_log, scale);
if (scaled_freq == 0) {
// Return 0 right away to avoid calculating log2 of 0.
return 0;
} else if (scaled_freq > nth_bit(max_freq_bits)) {
return max_freq_bits;
} else {
return log2_intptr(scaled_freq);
}
@ -1181,31 +1191,37 @@ void Arguments::set_tiered_flags() {
Tier3InvokeNotifyFreqLog = 0;
Tier4InvocationThreshold = 0;
}
// Scale tiered compilation thresholds
if (!FLAG_IS_DEFAULT(CompileThresholdScaling)) {
FLAG_SET_ERGO(intx, Tier0InvokeNotifyFreqLog, get_scaled_freq_log(Tier0InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier0BackedgeNotifyFreqLog, get_scaled_freq_log(Tier0BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3InvocationThreshold, get_scaled_compile_threshold(Tier3InvocationThreshold));
FLAG_SET_ERGO(intx, Tier3MinInvocationThreshold, get_scaled_compile_threshold(Tier3MinInvocationThreshold));
FLAG_SET_ERGO(intx, Tier3CompileThreshold, get_scaled_compile_threshold(Tier3CompileThreshold));
FLAG_SET_ERGO(intx, Tier3BackEdgeThreshold, get_scaled_compile_threshold(Tier3BackEdgeThreshold));
if (CompileThresholdScaling < 0) {
vm_exit_during_initialization("Negative value specified for CompileThresholdScaling", NULL);
}
// Scale tiered compilation thresholds.
// CompileThresholdScaling == 0.0 is equivalent to -Xint and leaves compilation thresholds unchanged.
if (!FLAG_IS_DEFAULT(CompileThresholdScaling) && CompileThresholdScaling > 0.0) {
FLAG_SET_ERGO(intx, Tier0InvokeNotifyFreqLog, scaled_freq_log(Tier0InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier0BackedgeNotifyFreqLog, scaled_freq_log(Tier0BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3InvocationThreshold, scaled_compile_threshold(Tier3InvocationThreshold));
FLAG_SET_ERGO(intx, Tier3MinInvocationThreshold, scaled_compile_threshold(Tier3MinInvocationThreshold));
FLAG_SET_ERGO(intx, Tier3CompileThreshold, scaled_compile_threshold(Tier3CompileThreshold));
FLAG_SET_ERGO(intx, Tier3BackEdgeThreshold, scaled_compile_threshold(Tier3BackEdgeThreshold));
// Tier2{Invocation,MinInvocation,Compile,Backedge}Threshold should be scaled here
// once these thresholds become supported.
FLAG_SET_ERGO(intx, Tier2InvokeNotifyFreqLog, get_scaled_freq_log(Tier2InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier2BackedgeNotifyFreqLog, get_scaled_freq_log(Tier2BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier2InvokeNotifyFreqLog, scaled_freq_log(Tier2InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier2BackedgeNotifyFreqLog, scaled_freq_log(Tier2BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3InvokeNotifyFreqLog, get_scaled_freq_log(Tier3InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3BackedgeNotifyFreqLog, get_scaled_freq_log(Tier3BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3InvokeNotifyFreqLog, scaled_freq_log(Tier3InvokeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier3BackedgeNotifyFreqLog, scaled_freq_log(Tier3BackedgeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier23InlineeNotifyFreqLog, get_scaled_freq_log(Tier23InlineeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier23InlineeNotifyFreqLog, scaled_freq_log(Tier23InlineeNotifyFreqLog));
FLAG_SET_ERGO(intx, Tier4InvocationThreshold, get_scaled_compile_threshold(Tier4InvocationThreshold));
FLAG_SET_ERGO(intx, Tier4MinInvocationThreshold, get_scaled_compile_threshold(Tier4MinInvocationThreshold));
FLAG_SET_ERGO(intx, Tier4CompileThreshold, get_scaled_compile_threshold(Tier4CompileThreshold));
FLAG_SET_ERGO(intx, Tier4BackEdgeThreshold, get_scaled_compile_threshold(Tier4BackEdgeThreshold));
FLAG_SET_ERGO(intx, Tier4InvocationThreshold, scaled_compile_threshold(Tier4InvocationThreshold));
FLAG_SET_ERGO(intx, Tier4MinInvocationThreshold, scaled_compile_threshold(Tier4MinInvocationThreshold));
FLAG_SET_ERGO(intx, Tier4CompileThreshold, scaled_compile_threshold(Tier4CompileThreshold));
FLAG_SET_ERGO(intx, Tier4BackEdgeThreshold, scaled_compile_threshold(Tier4BackEdgeThreshold));
}
}
@ -2293,6 +2309,7 @@ bool Arguments::check_vm_args_consistency() {
status = status && verify_percentage(G1MaxNewSizePercent, "G1MaxNewSizePercent");
status = status && verify_interval(G1NewSizePercent, 0, G1MaxNewSizePercent, "G1NewSizePercent");
status = status && verify_percentage(G1ConfidencePercent, "G1ConfidencePercent");
status = status && verify_percentage(InitiatingHeapOccupancyPercent,
"InitiatingHeapOccupancyPercent");
status = status && verify_min_value(G1RefProcDrainInterval, 1,
@ -3456,8 +3473,10 @@ jint Arguments::finalize_vm_init_args(SysClassPath* scp_p, bool scp_assembly_req
set_mode_flags(_int);
}
if ((TieredCompilation && CompileThresholdScaling == 0)
|| (!TieredCompilation && get_scaled_compile_threshold(CompileThreshold) == 0)) {
// CompileThresholdScaling == 0.0 is same as -Xint: Disable compilation (enable interpreter-only mode),
// but like -Xint, leave compilation thresholds unaffected.
// With tiered compilation disabled, setting CompileThreshold to 0 disables compilation as well.
if ((CompileThresholdScaling == 0.0) || (!TieredCompilation && CompileThreshold == 0)) {
set_mode_flags(_int);
}
@ -3828,6 +3847,8 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
#endif
#endif
ArgumentsExt::report_unsupported_options();
#ifndef PRODUCT
if (TraceBytecodesAt != 0) {
TraceBytecodes = true;
@ -3896,8 +3917,9 @@ jint Arguments::apply_ergo() {
"Incompatible compilation policy selected", NULL);
}
// Scale CompileThreshold
if (!FLAG_IS_DEFAULT(CompileThresholdScaling)) {
FLAG_SET_ERGO(intx, CompileThreshold, get_scaled_compile_threshold(CompileThreshold));
// CompileThresholdScaling == 0.0 is equivalent to -Xint and leaves CompileThreshold unchanged.
if (!FLAG_IS_DEFAULT(CompileThresholdScaling) && CompileThresholdScaling > 0.0) {
FLAG_SET_ERGO(intx, CompileThreshold, scaled_compile_threshold(CompileThreshold));
}
}