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src/share/vm/utilities/ticks.cpp
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
@@ -22,47 +22,115 @@
*
*/
#include "precompiled.hpp"
#include "runtime/os.hpp"
-#include "utilities/ticks.inline.hpp"
+#include "utilities/ticks.hpp"
-#ifdef ASSERT
- const jlong Ticks::invalid_time_stamp = -2; // 0xFFFF FFFF`FFFF FFFE
+#ifdef X86
+#include "rdtsc_x86.hpp"
#endif
-void Ticks::stamp() {
- _stamp_ticks = os::elapsed_counter();
+template <typename TimeSource, const int unit>
+inline double conversion(typename TimeSource::Type& value) {
+ return (double)value * ((double)unit / (double)TimeSource::frequency());
}
-const Ticks Ticks::now() {
- Ticks t;
- t.stamp();
- return t;
+uint64_t ElapsedCounterSource::frequency() {
+ static const uint64_t freq = (uint64_t)os::elapsed_frequency();
+ return freq;
}
-Tickspan::Tickspan(const Ticks& end, const Ticks& start) {
- assert(end.value() != Ticks::invalid_time_stamp, "end is unstamped!");
- assert(start.value() != Ticks::invalid_time_stamp, "start is unstamped!");
+ElapsedCounterSource::Type ElapsedCounterSource::now() {
+ return os::elapsed_counter();
+}
+
+double ElapsedCounterSource::seconds(Type value) {
+ return conversion<ElapsedCounterSource, 1>(value);
+}
- assert(end >= start, "negative time!");
+uint64_t ElapsedCounterSource::milliseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, MILLIUNITS>(value);
+}
- _span_ticks = end.value() - start.value();
+uint64_t ElapsedCounterSource::microseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, MICROUNITS>(value);
}
-template <typename ReturnType>
-static ReturnType time_conversion(const Tickspan& span, TicksToTimeHelper::Unit unit) {
- assert(TicksToTimeHelper::SECONDS == unit ||
- TicksToTimeHelper::MILLISECONDS == unit, "invalid unit!");
+uint64_t ElapsedCounterSource::nanoseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, NANOUNITS>(value);
+}
+
+uint64_t FastUnorderedElapsedCounterSource::frequency() {
+#ifdef X86
+ static bool valid_rdtsc = Rdtsc::initialize();
+ if (valid_rdtsc) {
+ static const uint64_t freq = (uint64_t)Rdtsc::frequency();
+ return freq;
+ }
+#endif
+ static const uint64_t freq = (uint64_t)os::elapsed_frequency();
+ return freq;
+}
+
+FastUnorderedElapsedCounterSource::Type FastUnorderedElapsedCounterSource::now() {
+#ifdef X86
+ static bool valid_rdtsc = Rdtsc::initialize();
+ if (valid_rdtsc) {
+ return Rdtsc::elapsed_counter();
+ }
+#endif
+ return os::elapsed_counter();
+}
+
+double FastUnorderedElapsedCounterSource::seconds(Type value) {
+ return conversion<FastUnorderedElapsedCounterSource, 1>(value);
+}
- ReturnType frequency_per_unit = (ReturnType)os::elapsed_frequency() / (ReturnType)unit;
+uint64_t FastUnorderedElapsedCounterSource::milliseconds(Type value) {
+ return (uint64_t)conversion<FastUnorderedElapsedCounterSource, MILLIUNITS>(value);
+}
+
+uint64_t FastUnorderedElapsedCounterSource::microseconds(Type value) {
+ return (uint64_t)conversion<FastUnorderedElapsedCounterSource, MICROUNITS>(value);
+}
+
+uint64_t FastUnorderedElapsedCounterSource::nanoseconds(Type value) {
+ return (uint64_t)conversion<FastUnorderedElapsedCounterSource, NANOUNITS>(value);
+}
+
+uint64_t CompositeElapsedCounterSource::frequency() {
+ return ElapsedCounterSource::frequency();
+}
+
+CompositeElapsedCounterSource::Type CompositeElapsedCounterSource::now() {
+ CompositeTime ct;
+ ct.val1 = ElapsedCounterSource::now();
+#ifdef X86
+ static bool initialized = false;
+ static bool valid_rdtsc = false;
+ if (!initialized) {
+ valid_rdtsc = Rdtsc::initialize();
+ initialized = true;
+ }
+ if (valid_rdtsc) {
+ ct.val2 = Rdtsc::elapsed_counter();
+ }
+#endif
+ return ct;
+}
+
+double CompositeElapsedCounterSource::seconds(Type value) {
+ return conversion<ElapsedCounterSource, 1>(value.val1);
+}
- return (ReturnType) ((ReturnType)span.value() / frequency_per_unit);
+uint64_t CompositeElapsedCounterSource::milliseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, MILLIUNITS>(value.val1);
}
-double TicksToTimeHelper::seconds(const Tickspan& span) {
- return time_conversion<double>(span, SECONDS);
+uint64_t CompositeElapsedCounterSource::microseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, MICROUNITS>(value.val1);
}
-jlong TicksToTimeHelper::milliseconds(const Tickspan& span) {
- return time_conversion<jlong>(span, MILLISECONDS);
+uint64_t CompositeElapsedCounterSource::nanoseconds(Type value) {
+ return (uint64_t)conversion<ElapsedCounterSource, NANOUNITS>(value.val1);
}
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