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