mirror of
https://github.com/dart-lang/sdk
synced 2024-09-05 00:13:50 +00:00
d366f9619a
- Remove random build-id. - Replace build time in embedded version string with commit time. - Remove timestamps from Observatory tarball. - Zero-initialize skipped bytes in snapshot streams. - Fix uninitialized fields in PatchClass, Script and Library. - Disable (under flag) random identity hashes and concurrent GC. Bug: https://github.com/dart-lang/sdk/issues/31427 Change-Id: I3e95de679c8372841cd27ca60df78d9b00ffbfe1 Reviewed-on: https://dart-review.googlesource.com/22901 Commit-Queue: Ryan Macnak <rmacnak@google.com> Reviewed-by: Zach Anderson <zra@google.com>
41 lines
858 B
C++
41 lines
858 B
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#ifndef RUNTIME_VM_RANDOM_H_
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#define RUNTIME_VM_RANDOM_H_
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#include "vm/allocation.h"
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#include "vm/flags.h"
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#include "vm/globals.h"
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namespace dart {
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DECLARE_FLAG(uint64_t, random_seed);
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class Random {
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public:
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Random();
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// Seed must be non-zero.
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explicit Random(uint64_t seed);
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~Random();
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uint32_t NextUInt32();
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uint64_t NextUInt64() {
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return (static_cast<uint64_t>(NextUInt32()) << 32) |
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static_cast<uint64_t>(NextUInt32());
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}
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private:
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void NextState();
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void Initialize(uint64_t seed);
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uint64_t _state;
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DISALLOW_COPY_AND_ASSIGN(Random);
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};
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} // namespace dart
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#endif // RUNTIME_VM_RANDOM_H_
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