Mercurial > hg > graal-jvmci-8
view src/share/vm/utilities/ticks.cpp @ 17937:78bbf4d43a14
8037816: Fix for 8036122 breaks build with Xcode5/clang
8043029: Change 8037816 breaks HS build with older GCC versions which don't support diagnostic pragmas
8043164: Format warning in traceStream.hpp
Summary: Backport of main fix + two corrections, enables clang compilation, turns on format attributes, corrects/mutes warnings
Reviewed-by: kvn, coleenp, iveresov, twisti
author | drchase |
---|---|
date | Thu, 22 May 2014 15:52:41 -0400 |
parents | 86e6d691f2e1 |
children |
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/* * Copyright (c) 2013, 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. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "runtime/os.hpp" #include "utilities/ticks.inline.hpp" #ifdef ASSERT const jlong Ticks::invalid_time_stamp = -2; // 0xFFFF FFFF`FFFF FFFE #endif void Ticks::stamp() { _stamp_ticks = os::elapsed_counter(); } const Ticks Ticks::now() { Ticks t; t.stamp(); return t; } 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!"); assert(end >= start, "negative time!"); _span_ticks = end.value() - start.value(); } template <typename ReturnType> static ReturnType time_conversion(const Tickspan& span, TicksToTimeHelper::Unit unit) { assert(TicksToTimeHelper::SECONDS == unit || TicksToTimeHelper::MILLISECONDS == unit, "invalid unit!"); ReturnType frequency_per_unit = (ReturnType)os::elapsed_frequency() / (ReturnType)unit; return (ReturnType) ((ReturnType)span.value() / frequency_per_unit); } double TicksToTimeHelper::seconds(const Tickspan& span) { return time_conversion<double>(span, SECONDS); } jlong TicksToTimeHelper::milliseconds(const Tickspan& span) { return time_conversion<jlong>(span, MILLISECONDS); }