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63 lines
2.0 KiB
C++
63 lines
2.0 KiB
C++
/*
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* Copyright (c) 2023, 2025, 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 "mallocInfoDcmd.hpp"
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#include "os_linux.hpp"
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#include "utilities/globalDefinitions.hpp"
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#include "utilities/ostream.hpp"
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#include "utilities/permitForbiddenFunctions.hpp"
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#include <malloc.h>
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constexpr const char* malloc_info_unavailable = "Error: malloc_info(3) not available.";
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void MallocInfoDcmd::execute(DCmdSource source, TRAPS) {
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#ifdef __GLIBC__
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char* buf;
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size_t size;
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FILE* stream = ::open_memstream(&buf, &size);
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if (stream == nullptr) {
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_output->print_cr("Error: Could not call malloc_info(3)");
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return;
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}
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int err = os::Linux::malloc_info(stream);
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if (err == 0) {
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fflush(stream);
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_output->print_raw(buf);
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_output->cr();
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} else if (err == -1) {
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_output->print_cr("Error: %s", os::strerror(errno));
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} else if (err == -2) {
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_output->print_cr(malloc_info_unavailable);
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} else {
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ShouldNotReachHere();
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}
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::fclose(stream);
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permit_forbidden_function::free(buf);
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#else
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_output->print_cr(malloc_info_unavailable);
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#endif // __GLIBC__
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}
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