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//===--- 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.valueReleaseCB,
nullptr,
nullptr,
CBs.UserData,
CBs.valueRetainCB,
};
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));
}
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