Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/jfr/support/jfrFlush.cpp
src/share/vm/jfr/support/jfrFlush.cpp
- changeset 9858
- b985cbb00e68
- child 9882
- 3dd83d893bfc
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| 9727:c7a3e57fdf4a | 9858:b985cbb00e68 |
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| 1 /* | |
| 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 #include "precompiled.hpp" | |
| 26 #include "jfr/recorder/jfrEventSetting.inline.hpp" | |
| 27 #include "jfr/recorder/storage/jfrStorage.hpp" | |
| 28 #include "jfr/recorder/stacktrace/jfrStackTraceRepository.hpp" | |
| 29 #include "jfr/support/jfrFlush.hpp" | |
| 30 #include "jfr/support/jfrThreadLocal.hpp" | |
| 31 #include "runtime/thread.inline.hpp" | |
| 32 #include "utilities/debug.hpp" | |
| 33 | |
| 34 JfrFlush::JfrFlush(JfrStorage::Buffer* old, size_t used, size_t requested, Thread* t) : | |
| 35 _result(JfrStorage::flush(old, used, requested, true, t)) { | |
| 36 } | |
| 37 | |
| 38 template <typename T> | |
| 39 class LessThanHalfBufferSize : AllStatic { | |
| 40 public: | |
| 41 static bool evaluate(T* t) { | |
| 42 assert(t != NULL, "invariant"); | |
| 43 return t->free_size() < t->size() / 2; | |
| 44 } | |
| 45 }; | |
| 46 | |
| 47 template <typename T> | |
| 48 class LessThanSize : AllStatic { | |
| 49 public: | |
| 50 static bool evaluate(T* t, size_t size) { | |
| 51 assert(t != NULL, "invariant"); | |
| 52 return t->free_size() < size; | |
| 53 } | |
| 54 }; | |
| 55 | |
| 56 bool jfr_is_event_enabled(JfrEventId id) { | |
| 57 return JfrEventSetting::is_enabled(id); | |
| 58 } | |
| 59 | |
| 60 bool jfr_has_stacktrace_enabled(JfrEventId id) { | |
| 61 return JfrEventSetting::has_stacktrace(id); | |
| 62 } | |
| 63 | |
| 64 void jfr_conditional_flush(JfrEventId id, size_t size, Thread* t) { | |
| 65 assert(jfr_is_event_enabled(id), "invariant"); | |
| 66 if (t->jfr_thread_local()->has_native_buffer()) { | |
| 67 JfrStorage::Buffer* const buffer = t->jfr_thread_local()->native_buffer(); | |
| 68 if (LessThanSize<JfrStorage::Buffer>::evaluate(buffer, size)) { | |
| 69 JfrFlush f(buffer, 0, 0, t); | |
| 70 } | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 bool jfr_save_stacktrace(Thread* t) { | |
| 75 JfrThreadLocal* const tl = t->jfr_thread_local(); | |
| 76 if (tl->has_cached_stack_trace()) { | |
| 77 return false; // no ownership | |
| 78 } | |
| 79 tl->set_cached_stack_trace_id(JfrStackTraceRepository::record(t)); | |
| 80 return true; | |
| 81 } | |
| 82 | |
| 83 void jfr_clear_stacktrace(Thread* t) { | |
| 84 t->jfr_thread_local()->clear_cached_stack_trace(); | |
| 85 } |
