| //===--- Cache-Mac.cpp - Caching mechanism implementation -----------------===// |
| // |
| // This source file is part of the Swift.org open source project |
| // |
| // Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors |
| // Licensed under Apache License v2.0 with Runtime Library Exception |
| // |
| // See https://swift.org/LICENSE.txt for license information |
| // See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This file implements the caching mechanism using darwin's libcache. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "swift/Basic/Cache.h" |
| #include "llvm/ADT/SmallString.h" |
| #include <cache.h> |
| |
| using namespace swift::sys; |
| using llvm::StringRef; |
| |
| CacheImpl::ImplTy CacheImpl::create(StringRef Name, const CallBacks &CBs) { |
| llvm::SmallString<32> NameBuf(Name); |
| cache_attributes_t Attrs = { |
| CACHE_ATTRIBUTES_VERSION_2, |
| CBs.keyHashCB, |
| CBs.keyIsEqualCB, |
| nullptr, |
| CBs.keyDestroyCB, |
| CBs.valueDestroyCB, |
| nullptr, |
| nullptr, |
| CBs.UserData, |
| nullptr |
| }; |
| |
| cache_t *cache_out = nullptr; |
| cache_create(NameBuf.c_str(), &Attrs, &cache_out); |
| assert(cache_out); |
| return cache_out; |
| } |
| |
| void CacheImpl::setAndRetain(void *Key, void *Value, size_t Cost) { |
| cache_set_and_retain(static_cast<cache_t*>(Impl), Key, Value, Cost); |
| } |
| |
| bool CacheImpl::getAndRetain(const void *Key, void **Value_out) { |
| int Ret = cache_get_and_retain(static_cast<cache_t*>(Impl), |
| const_cast<void*>(Key), Value_out); |
| return Ret == 0; |
| } |
| |
| void CacheImpl::releaseValue(void *Value) { |
| cache_release_value(static_cast<cache_t*>(Impl), Value); |
| } |
| |
| bool CacheImpl::remove(const void *Key) { |
| int Ret = cache_remove(static_cast<cache_t*>(Impl), const_cast<void*>(Key)); |
| return Ret == 0; |
| } |
| |
| void CacheImpl::removeAll() { |
| cache_remove_all(static_cast<cache_t*>(Impl)); |
| } |
| |
| void CacheImpl::destroy() { |
| cache_destroy(static_cast<cache_t*>(Impl)); |
| } |