firefox-main/dom/quota/ArtificialFailure.cpp (file symbol)

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/quota/ArtificialFailure.h"
#include "mozilla/Result.h"
#include "mozilla/StaticPrefs_dom.h"
namespace mozilla::dom::quota {
Result<Ok, nsresult> ArtificialFailure(
nsIQuotaArtificialFailure::Category aCategory) {
MOZ_ASSERT(aCategory != 0 && ((aCategory & (aCategory - 1)) == 0));
if ((StaticPrefs::dom_quotaManager_artificialFailure_categories() &
aCategory) == 0) {
return Ok{};
}
uint32_t probability =
StaticPrefs::dom_quotaManager_artificialFailure_probability();
if (probability == 0) {
return Ok{};
}
uint32_t randomValue = std::rand() % 100;
if (randomValue >= probability) {
return Ok{};
}
uint32_t errorCode =
StaticPrefs::dom_quotaManager_artificialFailure_errorCode();
nsresult rv = static_cast<nsresult>(errorCode);
return Err(rv);
}
} // namespace mozilla::dom::quota