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8235741: Inappropriate uses of os::javaTimeMillis()

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Reviewed-by: rehn, kbarrett, egahlin, shade
This commit is contained in:
David Holmes 2020-01-17 00:52:10 -05:00
parent d517220df6
commit 7c27f9f5dd
22 changed files with 136 additions and 104 deletions
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14
src/hotspot/share/utilities/globalDefinitions.hpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2020, 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
@ -254,10 +254,22 @@ const size_t HWperKB = K / sizeof(HeapWord);
const int MILLIUNITS = 1000; // milli units per base unit
const int MICROUNITS = 1000000; // micro units per base unit
const int NANOUNITS = 1000000000; // nano units per base unit
const int NANOUNITS_PER_MILLIUNIT = NANOUNITS / MILLIUNITS;
const jlong NANOSECS_PER_SEC = CONST64(1000000000);
const jint NANOSECS_PER_MILLISEC = 1000000;
// Unit conversion functions
// The caller is responsible for considering overlow.
inline int64_t nanos_to_millis(int64_t nanos) {
return nanos / NANOUNITS_PER_MILLIUNIT;
}
inline int64_t millis_to_nanos(int64_t millis) {
return millis * NANOUNITS_PER_MILLIUNIT;
}
// Proper units routines try to maintain at least three significant digits.
// In worst case, it would print five significant digits with lower prefix.
// G is close to MAX_SIZE on 32-bit platforms, so its product can easily overflow,