+#include "common.h"
#include <atomic>
#include <cds/gc/dhp.h>
#include <cds/gc/hp.h>
typedef cds_others::SeqLock SeqLock;
+static size_t s_nSeqLockReaderWriterThreadCount = 6;
+static size_t s_nSeqLockPassCount = 2000000;
+
class SeqLockTest : public cds_test::stress_fixture {
protected:
static int sum;
static SeqLock *seqlock;
static const int kReaderThreads = 0;
static const int kWriterThreads = 0;
- static const int kReaderWriterThreads = 6;
static const int kWriterPercentage = 15;
- static const int kPassCount = 15000;
- static void SetUpTestCase() {}
+ static void SetUpTestCase() {
+ cds_test::config const &cfg = get_config("Misc");
+ GetConfig(SeqLockReaderWriterThreadCount);
+ GetConfig(SeqLockPassCount);
+ }
static void ReaderThread() {}
static void WriterThread() {}
- static void ReaderWriterThread() {
- for (int i = 0; i < kPassCount; i++) {
- for (int j = 0; j < kPassCount; j++) {
- if (rand(100) < kWriterPercentage) {
- sum += seqlock->read();
- } else {
- seqlock->write(rand(10));
- }
+ static void ReaderWriterThread(int write_percentage) {
+ for (int i = 0; i < s_nSeqLockPassCount; i++) {
+ if (rand(100) < write_percentage) {
+ sum += seqlock->read();
+ } else {
+ seqlock->write(rand(10));
}
}
}
int SeqLockTest::sum;
SeqLock *SeqLockTest::seqlock;
-const int SeqLockTest::kReaderThreads;
-const int SeqLockTest::kWriterThreads;
-const int SeqLockTest::kReaderWriterThreads;
TEST_F(SeqLockTest, BasicReadWriter) {
seqlock = new SeqLock();
- int num_threads = kReaderThreads + kWriterThreads + kReaderWriterThreads;
- std::thread *threads = new std::thread[num_threads];
- for (int i = 0; i < kReaderThreads; i++) {
- threads[i] = std::thread(ReaderThread);
- }
- for (int i = kReaderThreads; i < (kReaderThreads + kWriterThreads); i++) {
- threads[i] = std::thread(WriterThread);
- }
- for (int i = (kReaderThreads + kWriterThreads); i < num_threads; i++) {
- threads[i] = std::thread(ReaderWriterThread);
- }
-
- for (int i = 0; i < num_threads; i++) {
- threads[i].join();
+ for (int write_percentage = 5; write_percentage < 50; write_percentage += 5) {
+ std::thread *threads = new std::thread[s_nSeqLockReaderWriterThreadCount];
+ for (size_t i = 0; i < s_nSeqLockReaderWriterThreadCount; i++) {
+ threads[i] = std::thread(ReaderWriterThread, write_percentage);
+ }
+ for (int i = 0; i < s_nSeqLockReaderWriterThreadCount; i++) {
+ threads[i].join();
+ }
+ delete[] threads;
}
}