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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef V8_NUMBERS_HASH_SEED_INL_H_
#define V8_NUMBERS_HASH_SEED_INL_H_
#include <stdint.h>
// The #includes below currently lead to cyclic transitive includes, so
// HashSeed() ends up being required before it is defined, so we have to
// declare it here. This is a workaround; if we needed this permanently then
// we should put that line into a "hash-seed.h" header; but we won't need
// it for long.
// TODO(jkummerow): Get rid of this by breaking circular include dependencies.
namespace v8 {
namespace internal {
class Isolate;
class ReadOnlyRoots;
// TODO(v8:7464): Remove the Isolate version of this.
inline uint64_t HashSeed(Isolate* isolate);
inline uint64_t HashSeed(ReadOnlyRoots roots);
} // namespace internal
} // namespace v8
// See comment above for why this isn't at the top of the file.
#include "src/objects/fixed-array-inl.h"
#include "src/roots/roots-inl.h"
namespace v8 {
namespace internal {
inline uint64_t HashSeed(Isolate* isolate) {
return HashSeed(ReadOnlyRoots(isolate));
}
inline uint64_t HashSeed(ReadOnlyRoots roots) {
uint64_t seed;
roots.hash_seed().copy_out(0, reinterpret_cast<byte*>(&seed), kInt64Size);
DCHECK(FLAG_randomize_hashes || seed == 0);
return seed;
}
} // namespace internal
} // namespace v8
#endif // V8_NUMBERS_HASH_SEED_INL_H_