Mercurial > hg > graal-jvmci-8
view src/share/vm/prims/jvmtiCodeBlobEvents.hpp @ 4712:e7dead7e90af
7117303: VM uses non-monotonic time source and complains that it is non-monotonic
Summary: Replaces calls to os::javaTimeMillis(), which does not (and cannot) guarantee monotonicity, in GC code to an equivalent expression that uses os::javaTimeNanos(). os::javaTimeNanos is guaranteed monotonically non-decreasing if the underlying platform provides a monotonic time source. Changes in OS files are to make use of the newly defined constants in globalDefinitions.hpp.
Reviewed-by: dholmes, ysr
author | johnc |
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date | Mon, 19 Dec 2011 10:02:05 -0800 |
parents | f95d63e2154a |
children | 8b46b0196eb0 |
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/* * Copyright (c) 2003, 2010, 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. * */ #ifndef SHARE_VM_PRIMS_JVMTICODEBLOBEVENTS_HPP #define SHARE_VM_PRIMS_JVMTICODEBLOBEVENTS_HPP #ifndef JVMTI_KERNEL #include "jvmtifiles/jvmti.h" #endif // forward declaration class JvmtiEnv; // JVMTI code blob event support // -- used by GenerateEvents to generate CompiledMethodLoad and // DynamicCodeGenerated events // -- also provide utility function build_jvmti_addr_location_map to create // a jvmtiAddrLocationMap list for a nmethod. class JvmtiCodeBlobEvents : public AllStatic { public: // generate a DYNAMIC_CODE_GENERATED_EVENT event for each non-nmethod // code blob in the code cache. static jvmtiError generate_dynamic_code_events(JvmtiEnv* env); // generate a COMPILED_METHOD_LOAD event for each nmethod // code blob in the code cache. static jvmtiError generate_compiled_method_load_events(JvmtiEnv* env); // create a C-heap allocated address location map for an nmethod static void build_jvmti_addr_location_map(nmethod *nm, jvmtiAddrLocationMap** map, jint *map_length); }; #endif // SHARE_VM_PRIMS_JVMTICODEBLOBEVENTS_HPP