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content / common / pseudonymization_salt.cc [blame]
// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/common/pseudonymization_salt.h"
#include <atomic>
#include "base/check_op.h"
#include "base/dcheck_is_on.h"
namespace content {
namespace {
std::atomic<uint32_t> g_salt(0);
} // namespace
uint32_t GetPseudonymizationSalt() {
uint32_t salt = g_salt.load();
DCHECK(salt);
return salt;
}
void SetPseudonymizationSalt(uint32_t salt) {
DCHECK_NE(0u, salt);
#if DCHECK_IS_ON()
uint32_t old_salt = g_salt.load(std::memory_order_acquire);
// Permit the same salt to be set more than once. This is because for single
// process tests and certain specific tests (e.g.
// RenderThreadImplBrowserTest), the ChildProcess is running in the same
// memory space as the browser.
DCHECK(0 == old_salt || old_salt == salt);
#endif // DCHECK_IS_ON()
g_salt.store(salt);
}
void ResetSaltForTesting() {
g_salt.store(0);
}
} // namespace content