| /* |
| * Copyright (C) 2017-2018 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "bmalloc.h" |
| |
| #include "DebugHeap.h" |
| #include "Environment.h" |
| #include "PerProcess.h" |
| |
| namespace bmalloc { namespace api { |
| |
| void* mallocOutOfLine(size_t size, HeapKind kind) |
| { |
| return malloc(size, kind); |
| } |
| |
| void freeOutOfLine(void* object, HeapKind kind) |
| { |
| free(object, kind); |
| } |
| |
| void* tryLargeZeroedMemalignVirtual(size_t requiredAlignment, size_t requestedSize, HeapKind kind) |
| { |
| RELEASE_BASSERT(isPowerOfTwo(requiredAlignment)); |
| |
| size_t pageSize = vmPageSize(); |
| size_t alignment = roundUpToMultipleOf(pageSize, requiredAlignment); |
| size_t size = roundUpToMultipleOf(pageSize, requestedSize); |
| RELEASE_BASSERT(alignment >= requiredAlignment); |
| RELEASE_BASSERT(size >= requestedSize); |
| |
| void* result; |
| if (auto* debugHeap = DebugHeap::tryGet()) |
| result = debugHeap->memalignLarge(alignment, size); |
| else { |
| kind = mapToActiveHeapKind(kind); |
| Heap& heap = PerProcess<PerHeapKind<Heap>>::get()->at(kind); |
| |
| std::unique_lock<Mutex> lock(Heap::mutex()); |
| result = heap.tryAllocateLarge(lock, alignment, size); |
| if (result) { |
| // Don't track this as dirty memory that dictates how we drive the scavenger. |
| // FIXME: We should make it so that users of this API inform bmalloc which |
| // pages they dirty: |
| // https://bugs.webkit.org/show_bug.cgi?id=184207 |
| heap.externalDecommit(lock, result, size); |
| } |
| } |
| |
| if (result) |
| vmZeroAndPurge(result, size); |
| return result; |
| } |
| |
| void freeLargeVirtual(void* object, size_t size, HeapKind kind) |
| { |
| if (auto* debugHeap = DebugHeap::tryGet()) { |
| debugHeap->freeLarge(object); |
| return; |
| } |
| kind = mapToActiveHeapKind(kind); |
| Heap& heap = PerProcess<PerHeapKind<Heap>>::get()->at(kind); |
| std::unique_lock<Mutex> lock(Heap::mutex()); |
| // Balance out the externalDecommit when we allocated the zeroed virtual memory. |
| heap.externalCommit(lock, object, size); |
| heap.deallocateLarge(lock, object); |
| } |
| |
| void scavenge() |
| { |
| scavengeThisThread(); |
| |
| if (DebugHeap* debugHeap = DebugHeap::tryGet()) |
| debugHeap->scavenge(); |
| else |
| Scavenger::get()->scavenge(); |
| } |
| |
| bool isEnabled(HeapKind) |
| { |
| return !Environment::get()->isDebugHeapEnabled(); |
| } |
| |
| #if BOS(DARWIN) |
| void setScavengerThreadQOSClass(qos_class_t overrideClass) |
| { |
| if (DebugHeap::tryGet()) |
| return; |
| std::unique_lock<Mutex> lock(Heap::mutex()); |
| Scavenger::get()->setScavengerThreadQOSClass(overrideClass); |
| } |
| #endif |
| |
| void commitAlignedPhysical(void* object, size_t size, HeapKind kind) |
| { |
| vmValidatePhysical(object, size); |
| vmAllocatePhysicalPages(object, size); |
| if (!DebugHeap::tryGet()) |
| PerProcess<PerHeapKind<Heap>>::get()->at(kind).externalCommit(object, size); |
| } |
| |
| void decommitAlignedPhysical(void* object, size_t size, HeapKind kind) |
| { |
| vmValidatePhysical(object, size); |
| vmDeallocatePhysicalPages(object, size); |
| if (!DebugHeap::tryGet()) |
| PerProcess<PerHeapKind<Heap>>::get()->at(kind).externalDecommit(object, size); |
| } |
| |
| void enableMiniMode() |
| { |
| if (!DebugHeap::tryGet()) |
| Scavenger::get()->enableMiniMode(); |
| } |
| |
| } } // namespace bmalloc::api |
| |