Mercurial > hg > graal-compiler
view src/share/vm/gc_interface/gcCause.hpp @ 9484:2b663d5893d3
Allow rounding errors in probabilities
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Wed, 01 May 2013 13:33:07 -0700 |
parents | 0b54ffe4c2d3 |
children | f2110083203d |
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/* * Copyright (c) 2002, 2012, 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_GC_INTERFACE_GCCAUSE_HPP #define SHARE_VM_GC_INTERFACE_GCCAUSE_HPP #include "memory/allocation.hpp" // // This class exposes implementation details of the various // collector(s), and we need to be very careful with it. If // use of this class grows, we should split it into public // and implemenation-private "causes". // class GCCause : public AllStatic { public: enum Cause { /* public */ _java_lang_system_gc, _full_gc_alot, _scavenge_alot, _allocation_profiler, _jvmti_force_gc, _gc_locker, _heap_inspection, _heap_dump, /* implementation independent, but reserved for GC use */ _no_gc, _no_cause_specified, _allocation_failure, /* implementation specific */ _tenured_generation_full, _metadata_GC_threshold, _cms_generation_full, _cms_initial_mark, _cms_final_remark, _old_generation_expanded_on_last_scavenge, _old_generation_too_full_to_scavenge, _adaptive_size_policy, _g1_inc_collection_pause, _g1_humongous_allocation, _last_ditch_collection, _last_gc_cause }; inline static bool is_user_requested_gc(GCCause::Cause cause) { return (cause == GCCause::_java_lang_system_gc || cause == GCCause::_jvmti_force_gc); } inline static bool is_serviceability_requested_gc(GCCause::Cause cause) { return (cause == GCCause::_jvmti_force_gc || cause == GCCause::_heap_inspection || cause == GCCause::_heap_dump); } // Return a string describing the GCCause. static const char* to_string(GCCause::Cause cause); }; // Helper class for doing logging that includes the GC Cause // as a string. class GCCauseString : StackObj { private: static const int _length = 128; char _buffer[_length]; int _position; public: GCCauseString(const char* prefix, GCCause::Cause cause) { if (PrintGCCause) { _position = jio_snprintf(_buffer, _length, "%s (%s) ", prefix, GCCause::to_string(cause)); } else { _position = jio_snprintf(_buffer, _length, "%s ", prefix); } assert(_position >= 0 && _position <= _length, err_msg("Need to increase the buffer size in GCCauseString? %d", _position)); } GCCauseString& append(const char* str) { int res = jio_snprintf(_buffer + _position, _length - _position, "%s", str); _position += res; assert(res >= 0 && _position <= _length, err_msg("Need to increase the buffer size in GCCauseString? %d", res)); return *this; } operator const char*() { return _buffer; } }; #endif // SHARE_VM_GC_INTERFACE_GCCAUSE_HPP