From 2b584edbddc782b6436a8e28d4f8b85a11f528a6 Mon Sep 17 00:00:00 2001
From: Determinant <ted.sybil@gmail.com>
Date: Thu, 4 Oct 2018 18:30:23 -0400
Subject: add lock-free queue impl and event-driven queue

---
 test/.gitignore     |  1 +
 test/CMakeLists.txt |  3 ++
 test/test_queue.cpp | 92 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 96 insertions(+)
 create mode 100644 test/test_queue.cpp

(limited to 'test')

diff --git a/test/.gitignore b/test/.gitignore
index 2cd44f2..592f084 100644
--- a/test/.gitignore
+++ b/test/.gitignore
@@ -1,5 +1,6 @@
 test_msg
 test_bits
 test_network
+test_queue
 bench_network
 Makefile
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 9689df3..44c984d 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -29,5 +29,8 @@ target_link_libraries(test_bits salticidae_static)
 add_executable(test_network test_network.cpp)
 target_link_libraries(test_network salticidae_static)
 
+add_executable(test_queue test_queue.cpp)
+target_link_libraries(test_queue salticidae_static pthread)
+
 add_executable(bench_network bench_network.cpp)
 target_link_libraries(bench_network salticidae_static pthread)
diff --git a/test/test_queue.cpp b/test/test_queue.cpp
new file mode 100644
index 0000000..bed88c4
--- /dev/null
+++ b/test/test_queue.cpp
@@ -0,0 +1,92 @@
+#include <cstdio>
+#include <thread>
+#include <atomic>
+
+#include "salticidae/event.h"
+
+void test_mpsc(int nproducers = 16, int nops = 100000) {
+    size_t total = nproducers * nops;
+    salticidae::EventContext ec;
+    std::atomic<size_t> collected(0);
+    salticidae::MPSCQueueEventDriven<int> q(ec, [&collected](int x) {
+        printf("%d\n", x);
+        collected.fetch_add(1);
+    });
+    std::vector<std::thread> producers;
+    std::thread consumer([&collected, total, &ec]() {
+        salticidae::Event timer(ec, -1, EV_TIMEOUT | EV_PERSIST,
+            [&ec, &collected, total](int, short) {
+            if (collected.load() == total) ec.stop();
+        });
+        timer.add_with_timeout(1);
+        ec.dispatch();
+    });
+    for (int i = 0; i < nproducers; i++)
+    {
+        producers.emplace(producers.end(), std::thread([&q, nops, i, nproducers]() {
+            int x = i;
+            for (int j = 0; j < nops; j++)
+            {
+                //usleep(rand() / double(RAND_MAX) * 100);
+                q.enqueue(x);
+                x += nproducers;
+            }
+        }));
+    }
+    for (auto &t: producers) t.join();
+    fprintf(stderr, "producers terminate\n");
+    consumer.join();
+    fprintf(stderr, "consumers terminate\n");
+}
+
+void test_mpmc(int nproducers = 16, int nconsumers = 4, int nops = 100000) {
+    size_t total = nproducers * nops;
+    salticidae::MPMCQueueEventDriven<int> q;
+    std::vector<std::thread> producers;
+    std::vector<std::thread> consumers;
+    std::vector<salticidae::EventContext> ecs;
+    std::atomic<size_t> collected(0);
+    ecs.resize(nconsumers);
+    for (int i = 0; i < nconsumers; i++)
+    {
+        q.listen(ecs[i], [&collected](int x) {
+            //usleep(10);
+            printf("%d\n", x);
+            collected.fetch_add(1);
+        });
+    }
+    for (int i = 0; i < nconsumers; i++)
+    {
+        consumers.emplace(consumers.end(), std::thread(
+                [&collected, total, &ec = ecs[i]]() {
+            salticidae::Event timer(ec, -1, EV_TIMEOUT | EV_PERSIST,
+                [&ec, &collected, total](int, short) {
+                if (collected.load() == total) ec.stop();
+            });
+            timer.add_with_timeout(1);
+            ec.dispatch();
+        }));
+    }
+    for (int i = 0; i < nproducers; i++)
+    {
+        producers.emplace(producers.end(), std::thread([&q, nops, i, nproducers]() {
+            int x = i;
+            for (int j = 0; j < nops; j++)
+            {
+                //usleep(rand() / double(RAND_MAX) * 100);
+                q.enqueue(x);
+                x += nproducers;
+            }
+        }));
+    }
+    for (auto &t: producers) t.join();
+    fprintf(stderr, "producers terminate\n");
+    for (auto &t: consumers) t.join();
+    fprintf(stderr, "consumers terminate\n");
+}
+
+int main() {
+    //test_mpsc();
+    test_mpmc();
+    return 0;
+}
-- 
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