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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 <stdlib.h>
#include <stdio.h>
#include <prthread.h>
#include "nsExpirationTracker.h"
#include "nsString.h"
#include "nsDirectoryServiceDefs.h"
#include "nsDirectoryServiceUtils.h"
#include "nsComponentManagerUtils.h"
#include "nsXPCOM.h"
#include "prinrval.h"
#include "nsThreadUtils.h"
#include "mozilla/UniquePtr.h"
#include "gtest/gtest.h"
namespace TestExpirationTracker {
struct Object {
Object() : mExpired(false) { Touch(); }
void Touch() {
mLastUsed = PR_IntervalNow();
mExpired = false;
}
nsExpirationState mExpiration;
nsExpirationState* GetExpirationState() { return &mExpiration; }
PRIntervalTime mLastUsed;
bool mExpired;
};
static bool error;
static uint32_t periodMS = 100;
static uint32_t ops = 1000;
static uint32_t iterations = 2;
static bool logging = 0;
static uint32_t sleepPeriodMS = 50;
static uint32_t upperBoundSlackMS = 1200; // allow this much error
static uint32_t lowerBoundSlackMS = 60;
template <uint32_t K>
class Tracker : public nsExpirationTracker<Object, K> {
public:
Tracker() : nsExpirationTracker<Object, K>(periodMS, "Tracker") {
Object* obj = new Object();
mUniverse.AppendElement(obj);
LogAction(obj, "Created");
}
nsTArray<mozilla::UniquePtr<Object>> mUniverse;
void LogAction(Object* aObj, const char* aAction) {
if (logging) {
printf("%d %p(%d): %s\n", PR_IntervalNow(), static_cast<void*>(aObj),
aObj->mLastUsed, aAction);
}
}
void DoRandomOperation() {
using mozilla::UniquePtr;
Object* obj;
switch (rand() & 0x7) {
case 0: {
if (mUniverse.Length() < 50) {
obj = new Object();
mUniverse.AppendElement(obj);
nsExpirationTracker<Object, K>::AddObject(obj);
LogAction(obj, "Created and added");
}
break;
}
case 4: {
if (mUniverse.Length() < 50) {
obj = new Object();
mUniverse.AppendElement(obj);
LogAction(obj, "Created");
}
break;
}
case 1: {
UniquePtr<Object>& objref =
mUniverse[uint32_t(rand()) % mUniverse.Length()];
if (objref->mExpiration.IsTracked()) {
nsExpirationTracker<Object, K>::RemoveObject(objref.get());
LogAction(objref.get(), "Removed");
}
break;
}
case 2: {
UniquePtr<Object>& objref =
mUniverse[uint32_t(rand()) % mUniverse.Length()];
if (!objref->mExpiration.IsTracked()) {
objref->Touch();
nsExpirationTracker<Object, K>::AddObject(objref.get());
LogAction(objref.get(), "Added");
}
break;
}
case 3: {
UniquePtr<Object>& objref =
mUniverse[uint32_t(rand()) % mUniverse.Length()];
if (objref->mExpiration.IsTracked()) {
objref->Touch();
nsExpirationTracker<Object, K>::MarkUsed(objref.get());
LogAction(objref.get(), "Marked used");
}
break;
}
}
}
protected:
void NotifyExpired(Object* aObj) override {
LogAction(aObj, "Expired");
PRIntervalTime now = PR_IntervalNow();
uint32_t timeDiffMS = (now - aObj->mLastUsed) * 1000 / PR_TicksPerSecond();
// See the comment for NotifyExpired in nsExpirationTracker.h for these
// bounds
uint32_t lowerBoundMS = (K - 1) * periodMS - lowerBoundSlackMS;
uint32_t upperBoundMS = K * (periodMS + sleepPeriodMS) + upperBoundSlackMS;
if (logging) {
printf("Checking: %d-%d = %d [%d,%d]\n", now, aObj->mLastUsed, timeDiffMS,
lowerBoundMS, upperBoundMS);
}
if (timeDiffMS < lowerBoundMS || timeDiffMS > upperBoundMS) {
EXPECT_LT(timeDiffMS, periodMS);
EXPECT_TRUE(aObj->mExpired);
}
aObj->Touch();
aObj->mExpired = true;
DoRandomOperation();
DoRandomOperation();
DoRandomOperation();
}
};
template <uint32_t K>
static bool test_random() {
srand(K);
error = false;
for (uint32_t j = 0; j < iterations; ++j) {
Tracker<K> tracker;
uint32_t i = 0;
for (i = 0; i < ops; ++i) {
if ((rand() & 0xF) == 0) {
// Simulate work that takes time
if (logging) {
printf("SLEEPING for %dms (%d)\n", sleepPeriodMS, PR_IntervalNow());
}
PR_Sleep(PR_MillisecondsToInterval(sleepPeriodMS));
// Process pending timer events
NS_ProcessPendingEvents(nullptr);
}
tracker.DoRandomOperation();
}
}
return !error;
}
static bool test_random3() { return test_random<3>(); }
static bool test_random4() { return test_random<4>(); }
static bool test_random8() { return test_random<8>(); }
typedef bool (*TestFunc)();
#define DECL_TEST(name) \
{ #name, name }
static const struct Test {
const char* name;
TestFunc func;
} tests[] = {DECL_TEST(test_random3),
DECL_TEST(test_random4),
DECL_TEST(test_random8),
{nullptr, nullptr}};
TEST(ExpirationTracker, main)
{
for (const TestExpirationTracker::Test* t = tests; t->name != nullptr; ++t) {
EXPECT_TRUE(t->func());
}
}
} // namespace TestExpirationTracker
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