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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/log/log.h>
LOG_SETUP("frozenbucketsmap_test");
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/searchcore/proton/server/frozenbuckets.h>
#include <vespa/vespalib/util/threadstackexecutor.h>
using namespace proton;
using document::BucketId;
class RWTask : public vespalib::Executor::Task {
public:
RWTask(FrozenBucketsMap & m, BucketId b, size_t count) : _b(b), _m(m), _count(count) {}
protected:
const BucketId _b;
FrozenBucketsMap & _m;
const size_t _count;
};
class Reader : public RWTask {
public:
Reader(FrozenBucketsMap & m, BucketId b, size_t count) :
RWTask(m, b, count),
numContended(0)
{}
~Reader() {
LOG(info, "NumContended = %ld", numContended);
}
void run() override {
for (size_t i(0); i < _count; i++) {
_m.freezeBucket(_b);
if (_m.thawBucket(_b)) {
numContended++;
}
}
}
size_t numContended;
};
class Writer : public RWTask {
public:
Writer(FrozenBucketsMap & m, BucketId b, size_t count) :
RWTask(m, b, count),
numFailed(0),
numSucces(0)
{}
~Writer() {
EXPECT_EQUAL(_count, numSucces + numFailed);
LOG(info, "NumSuccess = %ld, NumFailed = %ld", numSucces, numFailed);
}
void run() override {
for (size_t i(0); i < _count; i++) {
IFrozenBucketHandler::ExclusiveBucketGuard::UP guard = _m.acquireExclusiveBucket(_b);
if (guard) {
numSucces++;
} else {
numFailed++;
}
}
}
size_t numFailed;
size_t numSucces;
};
TEST("Race reader and writer on FrozenBucketsMap") {
FrozenBucketsMap m;
BucketId a(8, 6);
constexpr size_t NUM_READERS = 3;
constexpr size_t NUM_WRITERS = 1;
constexpr size_t READER_COUNT = 1000000;
constexpr size_t WRITER_COUNT = 1000000;
vespalib::ThreadStackExecutor executor(NUM_READERS+NUM_WRITERS, 0x10000);
for (size_t i(0); i < NUM_READERS; i++) {
EXPECT_FALSE(bool(executor.execute(std::make_unique<Reader>(m, a, READER_COUNT))));
}
for (size_t i(0); i < NUM_WRITERS; i++) {
EXPECT_FALSE(bool(executor.execute(std::make_unique<Writer>(m, a, WRITER_COUNT))));
}
executor.sync();
}
TEST_MAIN()
{
TEST_RUN_ALL();
}
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