From d33a69463f1a75134d01191be0b9e1bdd757dd4b Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期五, 30 四月 2021 15:27:59 +0800
Subject: [PATCH] add atomic queue, no lock, unorder.
---
utest/robust_test.cpp | 122 +++++++++++++++++++++-------------------
1 files changed, 65 insertions(+), 57 deletions(-)
diff --git a/utest/robust_test.cpp b/utest/robust_test.cpp
index 9384c10..7799aad 100644
--- a/utest/robust_test.cpp
+++ b/utest/robust_test.cpp
@@ -8,52 +8,54 @@
eLockerMask = MaskBits(sizeof(int) * 8),
};
-typedef CircularBuffer<int64_t, Allocator<int64_t>> Rcb;
-Rcb *GetRCB(SharedMemory &shm, const int nelem)
-{
- int cap = nelem + 1;
- typedef uint64_t Data;
- auto size = sizeof(Rcb) + sizeof(Data) * cap;
- void *p = shm.Alloc(size);
- if (p) {
- return new (p) Rcb(cap, shm.get_segment_manager());
- }
- return nullptr;
-}
-
void MySleep()
{
std::this_thread::sleep_for(2us);
}
+/////////////////////////////////////////////////////////////////////////////////////////
+
BOOST_AUTO_TEST_CASE(QueueTest)
{
+ const int nthread = 100;
+ const uint64_t nmsg = 1000 * 1000 * 10;
+
SharedMemory &shm = TestShm();
shm.Remove();
- pid_t pid = getpid();
- printf("pid : %d\n", pid);
- auto Access = [](pid_t pid) {
- char buf[100] = {0};
- sprintf(buf, "/proc/%d/stat", pid);
- int r = access(buf, F_OK);
- printf("access %d\n", r);
- };
- Access(pid);
- Access(pid + 1);
- // Sleep(10s);
- // return;
+ // return; /////////////////////////////////////////////////
+ int64_t i64 = 0;
+ char c = 0;
+ for (int i = 0; i < 256; ++i) {
+ c = i;
+ i64 = int64_t(c) << 1;
+ BOOST_CHECK_EQUAL(c, (i64 >> 1));
+ uint64_t u64 = i;
+ BOOST_CHECK_EQUAL((u64 & 255), i);
+ }
- int nelement = 640;
- auto rcb = GetRCB(shm, nelement);
- BOOST_CHECK(rcb != nullptr);
- BOOST_CHECK(rcb->empty());
- BOOST_CHECK(rcb->push_back(1));
- BOOST_CHECK(rcb->size() == 1);
+#if 1
+ typedef AtomicQueue<3> Rcb;
+
+ Rcb tmp;
+ BOOST_CHECK(tmp.like_empty());
+ BOOST_CHECK(tmp.push_back(1));
+ BOOST_CHECK(tmp.tail() == 1);
+ BOOST_CHECK(tmp.head() == 0);
int64_t d;
- BOOST_CHECK(rcb->pop_front(d));
- BOOST_CHECK(rcb->empty());
+ BOOST_CHECK(tmp.pop_front(d));
+ BOOST_CHECK(tmp.like_empty());
+ BOOST_CHECK(tmp.head() == 1);
+ BOOST_CHECK(tmp.tail() == 1);
- const uint64_t nmsg = 1000 * 1000 * 1;
+ ShmObject<Rcb> rcb(shm, "test_rcb");
+#else
+ typedef Circular<int64_t> Rcb;
+ ShmObject<Rcb> rcb(shm, "test_rcb", 64, shm.get_segment_manager());
+#endif
+
+ const int nsize = sizeof(Rcb);
+
+ bool try_more = false;
uint64_t correct_total = nmsg * (nmsg - 1) / 2;
std::atomic<uint64_t> total(0);
std::atomic<uint64_t> nwrite(0);
@@ -61,7 +63,7 @@
auto Writer = [&]() {
uint64_t n = 0;
while ((n = nwrite++) < nmsg) {
- while (!rcb->push_back(n)) {
+ while (!rcb->push_back(n, try_more)) {
// MySleep();
}
++writedone;
@@ -71,11 +73,11 @@
auto Reader = [&]() {
while (nread.load() < nmsg) {
int64_t d;
- if (rcb->pop_front(d)) {
+ if (rcb->pop_front(d, try_more)) {
++nread;
total += d;
} else {
- MySleep();
+ // MySleep();
}
}
};
@@ -89,21 +91,25 @@
next += 1s;
auto w = writedone.load();
auto r = nread.load();
- printf("write: %6ld, spd: %6ld, read: %6ld, spd: %6ld , queue size: %d\n", w, w - lw, r, r - lr, rcb->size());
+ printf("write: %6ld, spd: %6ld, read: %6ld, spd: %6ld\n",
+ w, w - lw, r, r - lr);
lw = w;
lr = r;
} while (nread.load() < nmsg);
};
- ThreadManager threads;
- boost::timer::auto_cpu_timer timer;
- printf("Testing Robust Buffer, msgs %ld, queue size: %d \n", nmsg, nelement);
- threads.Launch(status);
- for (int i = 0; i < 10; ++i) {
- threads.Launch(Reader);
- threads.Launch(Writer);
+ std::thread st(status);
+ {
+ ThreadManager threads;
+ boost::timer::auto_cpu_timer timer;
+ printf("Testing Robust Buffer, msgs %ld, queue size: %d, threads: %d \n", nmsg, Rcb::capacity, nthread);
+ for (int i = 0; i < nthread; ++i) {
+ threads.Launch(Reader);
+ threads.Launch(Writer);
+ }
+ threads.WaitAll();
}
- threads.WaitAll();
+ st.join();
printf("total: %ld, expected: %ld\n", total.load(), correct_total);
BOOST_CHECK_EQUAL(total.load(), correct_total);
}
@@ -137,9 +143,7 @@
}
{
- boost::timer::auto_cpu_timer timer;
const int ntimes = 1000 * 1000;
- printf("test lock/unlock %d times: ", ntimes);
RobustMutex mutex;
auto Lock = [&]() {
for (int i = 0; i < ntimes; ++i) {
@@ -147,16 +151,20 @@
mutex.unlock();
}
};
- std::thread t1(Lock), t2(Lock);
- t1.join();
- t2.join();
- }
- auto MSFromNow = [](const int ms) {
- using namespace boost::posix_time;
- ptime cur = boost::posix_time::microsec_clock::universal_time();
- return cur + millisec(ms);
- };
+ {
+ boost::timer::auto_cpu_timer timer;
+ printf("test lock/unlock %d times: ", ntimes);
+ Lock();
+ }
+ {
+ boost::timer::auto_cpu_timer timer;
+ printf("test lock/unlock %d times, 2 thread: ", ntimes);
+ std::thread t1(Lock), t2(Lock);
+ t1.join();
+ t2.join();
+ }
+ }
auto TryLock = [&]() {
if (mtx->try_lock()) {
--
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