firefox-main/dom/quota/Assertions.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 "Assertions.h"
#include "mozilla/Assertions.h"
#include "mozilla/DataMutex.h"
#include "mozilla/dom/quota/AssertionsImpl.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "nsIThread.h"
#include "nsTHashMap.h"
namespace mozilla::dom::quota {
uint64_t ClampToZero(int64_t aValue, const nsACString& aContext) {
AssertNotNegative(aValue, aContext);
return aValue < 0 ? 0 : static_cast<uint64_t>(aValue);
}
bool ShouldReportDiagnostic(const nsACString& aContext) {
static StaticDataMutex<nsTHashMap<nsCStringHashKey, uint32_t>> sCounters(
"ShouldReportDiagnostic::sCounters");
auto counters = sCounters.Lock();
uint32_t& counter = counters->LookupOrInsert(aContext, 0u);
// To not flood the product maintenance diagnostics, this predicate
// qualifies an error by returning true only when counter and 1 + counter
// bits are like 0111... and 1000..., i.e. when counter is one less than a
// power of two.
// Each distinct context gets its own counter, so a chronically-firing
// context can't suppress the first occurrences of a different, rarer one.
// This is a copy paste from LSSnapshot::SetItem.
const bool result = 0u == (counter & (1u + counter));
++counter;
return result;
}
bool IsOnIOThread() {
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "Must have a manager here!");
bool currentThread;
return NS_SUCCEEDED(
quotaManager->IOThread()->IsOnCurrentThread(&currentThread)) &&
currentThread;
}
void AssertIsOnIOThread() {
NS_ASSERTION(IsOnIOThread(), "Running on the wrong thread!");
}
void DiagnosticAssertIsOnIOThread() { MOZ_DIAGNOSTIC_ASSERT(IsOnIOThread()); }
void AssertCurrentThreadOwnsQuotaMutex() {
#ifdef DEBUG
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "Must have a manager here!");
quotaManager->AssertCurrentThreadOwnsQuotaMutex();
#endif
}
} // namespace mozilla::dom::quota