/* Copyright (C) 2016 The Android Open Source Project
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This file implements interfaces from the file jvmti.h. This implementation
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* is licensed under the same terms as the file jvmti.h. The
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* copyright and license information for the file jvmti.h follows.
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*
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* Copyright (c) 2003, 2011, 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. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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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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#include "ti_allocator.h"
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#if defined(__APPLE__)
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// Apple doesn't have malloc.h. Just give this function a non-functional definition.
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#define malloc_usable_size(P) 0
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#else
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#include <malloc.h>
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#endif
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#include <atomic>
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#include "art_jvmti.h"
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#include "base/enums.h"
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namespace openjdkjvmti {
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std::atomic<jlong> AllocUtil::allocated;
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jvmtiError AllocUtil::GetGlobalJvmtiAllocationState(jvmtiEnv* env ATTRIBUTE_UNUSED,
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jlong* allocated_ptr) {
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if (allocated_ptr == nullptr) {
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return ERR(NULL_POINTER);
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}
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*allocated_ptr = allocated.load();
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return OK;
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}
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jvmtiError AllocUtil::Allocate(jvmtiEnv* env ATTRIBUTE_UNUSED,
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jlong size,
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unsigned char** mem_ptr) {
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if (size < 0) {
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return ERR(ILLEGAL_ARGUMENT);
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} else if (size == 0) {
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*mem_ptr = nullptr;
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return OK;
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}
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*mem_ptr = AllocateImpl(size);
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if (UNLIKELY(*mem_ptr == nullptr)) {
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return ERR(OUT_OF_MEMORY);
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}
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return OK;
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}
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unsigned char* AllocUtil::AllocateImpl(jlong size) {
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unsigned char* ret = size != 0 ? reinterpret_cast<unsigned char*>(malloc(size)) : nullptr;
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if (LIKELY(ret != nullptr)) {
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allocated += malloc_usable_size(ret);
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}
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return ret;
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}
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jvmtiError AllocUtil::Deallocate(jvmtiEnv* env ATTRIBUTE_UNUSED, unsigned char* mem) {
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DeallocateImpl(mem);
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return OK;
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}
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void AllocUtil::DeallocateImpl(unsigned char* mem) {
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if (mem != nullptr) {
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allocated -= malloc_usable_size(mem);
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free(mem);
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}
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}
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} // namespace openjdkjvmti
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