107 lines
3.9 KiB
C++
107 lines
3.9 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "dlmalloc.h"
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#include <android-base/logging.h>
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#include "base/bit_utils.h"
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// ART specific morecore implementation defined in space.cc.
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static void* art_heap_morecore(void* m, intptr_t increment);
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#define MORECORE(x) art_heap_morecore(m, x)
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// Custom heap error handling.
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#define PROCEED_ON_ERROR 0
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static void art_heap_corruption(const char* function);
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static void art_heap_usage_error(const char* function, void* p);
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#define CORRUPTION_ERROR_ACTION(m) art_heap_corruption(__FUNCTION__)
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#define USAGE_ERROR_ACTION(m, p) art_heap_usage_error(__FUNCTION__, p)
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// Ugly inclusion of C file so that ART specific #defines configure dlmalloc for our use for
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// mspaces (regular dlmalloc is still declared in bionic).
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wredundant-decls"
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#pragma GCC diagnostic ignored "-Wempty-body"
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#pragma GCC diagnostic ignored "-Wstrict-aliasing"
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#pragma GCC diagnostic ignored "-Wnull-pointer-arithmetic"
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#pragma GCC diagnostic ignored "-Wexpansion-to-defined"
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#include "../../../external/dlmalloc/malloc.c"
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// Note: malloc.c uses a DEBUG define to drive debug code. This interferes with the DEBUG severity
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// of libbase, so undefine it now.
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#undef DEBUG
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#pragma GCC diagnostic pop
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static void* art_heap_morecore(void* m, intptr_t increment) {
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return ::art::gc::allocator::ArtDlMallocMoreCore(m, increment);
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}
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static void art_heap_corruption(const char* function) {
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LOG(FATAL) << "Corrupt heap detected in: " << function;
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}
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static void art_heap_usage_error(const char* function, void* p) {
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LOG(FATAL) << "Incorrect use of function '" << function << "' argument " << p
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<< " not expected";
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}
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#include <sys/mman.h>
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#include "base/utils.h"
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#include "runtime_globals.h"
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extern "C" void DlmallocMadviseCallback(void* start, void* end, size_t used_bytes, void* arg) {
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// Is this chunk in use?
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if (used_bytes != 0) {
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return;
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}
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// Do we have any whole pages to give back?
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start = reinterpret_cast<void*>(art::RoundUp(reinterpret_cast<uintptr_t>(start), art::kPageSize));
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end = reinterpret_cast<void*>(art::RoundDown(reinterpret_cast<uintptr_t>(end), art::kPageSize));
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if (end > start) {
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size_t length = reinterpret_cast<uint8_t*>(end) - reinterpret_cast<uint8_t*>(start);
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int rc = madvise(start, length, MADV_DONTNEED);
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if (UNLIKELY(rc != 0)) {
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errno = rc;
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PLOG(FATAL) << "madvise failed during heap trimming";
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}
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size_t* reclaimed = reinterpret_cast<size_t*>(arg);
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*reclaimed += length;
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}
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}
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extern "C" void DlmallocBytesAllocatedCallback(void* start ATTRIBUTE_UNUSED,
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void* end ATTRIBUTE_UNUSED,
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size_t used_bytes,
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void* arg) {
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if (used_bytes == 0) {
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return;
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}
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size_t* bytes_allocated = reinterpret_cast<size_t*>(arg);
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*bytes_allocated += used_bytes + sizeof(size_t);
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}
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extern "C" void DlmallocObjectsAllocatedCallback(void* start ATTRIBUTE_UNUSED,
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void* end ATTRIBUTE_UNUSED,
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size_t used_bytes,
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void* arg) {
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if (used_bytes == 0) {
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return;
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}
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size_t* objects_allocated = reinterpret_cast<size_t*>(arg);
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++(*objects_allocated);
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}
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