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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifdef V8_INTL_SUPPORT
#include "src/base/platform/platform.h"
#include "src/date/date.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "unicode/strenum.h"
#include "unicode/timezone.h"
namespace v8 {
namespace internal {
// A recent time for the test.
// 2019-05-08T04:16:04.845Z
static const int64_t kStartTime = 1557288964845;
class AdoptDefaultThread final : public base::Thread {
public:
AdoptDefaultThread() : base::Thread(Options("AdoptDefault")) {}
void Run() override {
printf("AdoptDefaultThread Start\n");
std::unique_ptr<icu::StringEnumeration> timezones(
icu::TimeZone::createEnumeration());
UErrorCode status = U_ZERO_ERROR;
const icu::UnicodeString* timezone = timezones->snext(status);
icu::TimeZone::adoptDefault(icu::TimeZone::createTimeZone(*timezone));
printf("AdoptDefaultThread End\n");
}
};
class GetLocalOffsetFromOSThread final : public base::Thread {
public:
explicit GetLocalOffsetFromOSThread(bool utc)
: base::Thread(Options("GetLocalOffsetFromOS")), utc_(utc) {}
void Run() override {
printf("GetLocalOffsetFromOSThread Start\n");
DateCache date_cache;
date_cache.GetLocalOffsetFromOS(kStartTime, utc_);
printf("GetLocalOffsetFromOSThread End\n");
}
private:
bool utc_;
};
class LocalTimezoneThread final : public base::Thread {
public:
LocalTimezoneThread() : base::Thread(Options("LocalTimezone")) {}
void Run() override {
printf("LocalTimezoneThread Start\n");
DateCache date_cache;
date_cache.LocalTimezone(kStartTime);
printf("LocalTimezoneThread End\n");
}
};
TEST(DateCache, AdoptDefaultFirst) {
AdoptDefaultThread t1;
GetLocalOffsetFromOSThread t2(true);
GetLocalOffsetFromOSThread t3(false);
LocalTimezoneThread t4;
// The AdoptDefaultFirst will always pass. Just a test to ensure
// our testing code itself is correct.
// We finish all the operation AdoptDefaultThread before
// running all other thread so it won't show the problem of
// AdoptDefault trashing newly create default.
t1.Start();
t1.Join();
t2.Start();
t3.Start();
t4.Start();
t2.Join();
t3.Join();
t4.Join();
}
TEST(DateCache, AdoptDefaultMixed) {
AdoptDefaultThread t1;
GetLocalOffsetFromOSThread t2(true);
GetLocalOffsetFromOSThread t3(false);
LocalTimezoneThread t4;
// The AdoptDefaultMixed run AdoptDefaultThread concurrently
// with other thread so if the AdoptDefault is not thread safe
// it will cause crash in other thread because the TimeZone
// newly created by createDefault could be trashed by AdoptDefault
// while a deleted DEFAULT_ZONE got cloned.
t1.Start();
t2.Start();
t3.Start();
t4.Start();
t1.Join();
t2.Join();
t3.Join();
t4.Join();
}
} // namespace internal
} // namespace v8
#endif // V8_INTL_SUPPORT
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