jdk

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/*
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 * Copyright (c) 2024, Red Hat, Inc. All rights reserved.
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 * Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "logging/log.hpp"
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#include "nmt/nativeCallStackPrinter.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/nativeCallStack.hpp"
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#include "utilities/ostream.hpp"
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NativeCallStackPrinter::NativeCallStackPrinter(outputStream* out) :
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    _text_storage(mtNMT, Arena::Tag::tag_other, 128 * K), _out(out)
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{}
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void NativeCallStackPrinter::print_stack(const NativeCallStack* stack) const {
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  for (int i = 0; i < NMT_TrackingStackDepth; i++) {
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    const address pc = stack->get_frame(i);
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    if (pc == nullptr) {
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      break;
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    }
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    bool created = false;
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    const char** cached_frame_text = _cache.put_if_absent(pc, &created);
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    if (created) {
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      stringStream ss(4 * K);
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      stack->print_frame(&ss, pc);
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      const size_t len = ss.size();
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      char* store = NEW_ARENA_ARRAY(&_text_storage, char, len + 1);
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      memcpy(store, ss.base(), len + 1);
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      (*cached_frame_text) = store;
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    }
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    _out->print_raw_cr(*cached_frame_text);
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  }
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}
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