From 8cbb55f3066f71f5a4328193414d4555c87e96be Mon Sep 17 00:00:00 2001
From: lichao <lichao@aiotlink.com>
Date: 星期二, 30 三月 2021 11:41:30 +0800
Subject: [PATCH] refactor.

---
 utest/speed_test.cpp   |  197 +++++++++++++
 src/shm.h              |   10 
 utest/simple_tests.cpp |  143 +++++++++
 utest/util.h           |   99 ++++++
 src/defs.h             |    4 
 src/pubsub.cpp         |    4 
 utest/utest.cpp        |  389 +------------------------
 src/shm.cpp            |   12 
 8 files changed, 480 insertions(+), 378 deletions(-)

diff --git a/src/defs.h b/src/defs.h
index 02978cd..40421e0 100644
--- a/src/defs.h
+++ b/src/defs.h
@@ -24,6 +24,8 @@
 
 typedef boost::uuids::uuid MQId;
 
-const MQId kBusQueueId = boost::uuids::string_generator()("01234567-89ab-cdef-8349-1234567890ff");
+const MQId kBHBusQueueId = boost::uuids::string_generator()("01234567-89ab-cdef-8349-1234567890ff");
+const int kBHCenterPort = 24287;
+//TODO center can check shm for previous crash.
 
 #endif // end of include guard: DEFS_KP8LKGD0
diff --git a/src/pubsub.cpp b/src/pubsub.cpp
index 686c7d5..add968c 100644
--- a/src/pubsub.cpp
+++ b/src/pubsub.cpp
@@ -18,17 +18,17 @@
 #include "pubsub.h"
 #include <chrono>
 #include "bh_util.h"
+#include "defs.h"
 
 namespace bhome_shm {
 
 using namespace std::chrono_literals;
-const MQId kBusQueueId = boost::uuids::string_generator()("01234567-89ab-cdef-8349-1234567890ff");
 const int kMaxWorker = 16;
 using namespace bhome_msg;
 
 BusManager::BusManager(SharedMemory &shm):
 shm_(shm),
-busq_(kBusQueueId, shm, 1000),
+busq_(kBHBusQueueId, shm, 1000),
 run_(false)
 {
 }
diff --git a/src/shm.cpp b/src/shm.cpp
index fd0f838..d628b56 100644
--- a/src/shm.cpp
+++ b/src/shm.cpp
@@ -18,6 +18,16 @@
 
 #include "shm.h"
 
-namespace bhome_shm {
+namespace bhome_shm
+{
 
+SharedMemory::SharedMemory(const std::string &name, const uint64_t size)
+    : mshm_t(open_or_create, name.c_str(), size, 0, AllowAll()),
+      name_(name)
+{
+}
+
+SharedMemory::~SharedMemory()
+{
+}
 } // namespace bhome_shm
diff --git a/src/shm.h b/src/shm.h
index 7537067..5e2c8b9 100644
--- a/src/shm.h
+++ b/src/shm.h
@@ -44,14 +44,13 @@
         perm.set_unrestricted();
         return perm;
     }
+    void Swap(SharedMemory &a);
 public:
     static bool Remove(const std::string &name) {
         return shared_memory_object::remove(name.c_str());
     }
-    SharedMemory(const std::string &name, const uint64_t size):
-    mshm_t(open_or_create, name.c_str(), size, 0, AllowAll()),
-    name_(name)
-    {}
+    SharedMemory(const std::string &name, const uint64_t size);
+    ~SharedMemory();
     std::string name() const { return name_; }
     bool Remove() { return Remove(name()); }
 
@@ -67,6 +66,7 @@
 
 // ShmObject manages an object in shared memory, but ShmObject itself is not in shared memory.
 // works like a smart pointer of an object in shared memory.
+// TODO handshake with center, and can be removed if killed.
 template <class T>
 class ShmObject : private boost::noncopyable {
     static std::string ObjName(const std::string &name) { return "obj" + name; }
@@ -98,7 +98,7 @@
     const Data* data() const { return pdata_; }
     Data* operator->() { return data(); }
     const Data* operator->() const { return data(); }
-    virtual bool Remove() { return shm_.destroy<Data>(ObjName(name_).c_str()); }
+    bool Remove() { return shm_.destroy<Data>(ObjName(name_).c_str()); }
 };
 
 template <class D> using Allocator = allocator<D, SharedMemory::segment_manager>;
diff --git a/utest/simple_tests.cpp b/utest/simple_tests.cpp
new file mode 100644
index 0000000..eff0209
--- /dev/null
+++ b/utest/simple_tests.cpp
@@ -0,0 +1,143 @@
+/*
+ * =====================================================================================
+ *
+ *       Filename:  simple_tests.cpp
+ *
+ *    Description:  
+ *
+ *        Version:  1.0
+ *        Created:  2021骞�03鏈�30鏃� 11鏃�29鍒�40绉�
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  YOUR NAME (), 
+ *   Organization:  
+ *
+ * =====================================================================================
+ */
+
+#include "util.h"
+
+struct s1000 { char a[1000]; };
+
+
+BOOST_AUTO_TEST_CASE(BasicTest)
+{
+    const std::string shm_name("basic");
+    ShmRemover auto_remove(shm_name);
+    SharedMemory shm(shm_name, 1024*1024*10);
+    auto Avail = [&]() { return shm.get_free_memory(); };
+
+    offset_ptr<const void> p;
+    BOOST_CHECK(!p);
+    BOOST_CHECK(p.get() == 0);
+    p = 0;
+    BOOST_CHECK(!p);
+    BOOST_CHECK(p.get() == 0);
+    const char *str = "basic";
+    p = str;
+    BOOST_CHECK(p);
+    BOOST_CHECK(p.get() == str);
+    p = 0;
+    BOOST_CHECK(!p);
+    BOOST_CHECK(p.get() == 0);
+
+
+    auto init_avail = Avail();
+
+    auto BasicTest = [&](int tid, int nloop) {
+        auto Code = [&](int id) {
+
+            typedef ShmObject<s1000> Int;
+            std::string name = std::to_string(id);
+            auto a0 = Avail();
+            Int i1(shm, name);
+            auto a1 = Avail();
+            BOOST_CHECK_LT(a1, a0);
+            printf("s1000 size: %ld\n", a0 - a1);
+            i1->a[0] = 5;
+            Int i2(shm, name);
+            auto a2 = Avail();
+            BOOST_CHECK_EQUAL(a1, a2);
+            BOOST_CHECK_EQUAL(i1.data(), i2.data());
+            int i = i1.Remove();
+            BOOST_CHECK_EQUAL(Avail(), a0);
+
+            {
+                auto old = Avail();
+                void *p = shm.Alloc(1024);
+                shm.Dealloc(p);
+                BOOST_CHECK_EQUAL(old, Avail());
+            }
+
+            bool r = shared_memory_object::remove(shm_name.c_str());
+            BOOST_CHECK(r);
+        };
+        for (int i = 0; i < nloop; ++i) {
+            Code(i + tid*nloop);
+        }
+    };
+    
+    // boost::timer::auto_cpu_timer timer;
+    ThreadManager threads;
+    int nthread = 1;
+    int nloop = 1;
+    for (int i = 0; i < nthread; ++i)
+    {
+        threads.Launch(BasicTest, i, nloop);
+    }
+    BOOST_CHECK_EQUAL(init_avail, Avail());
+}
+
+BOOST_AUTO_TEST_CASE(ForkTest)
+{
+    ProcessManager procs;
+    const int nproc = 10;
+
+    printf("Testing fork:\n");
+
+    auto child = [&](int id) {
+        std::this_thread::sleep_for(100ms *id);
+        printf("child id: %3d/%d ends\r", id, nproc);
+    };
+
+    for (int i = 0; i < nproc; ++i) {
+        procs.Launch(child, i+1);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(TimedWaitTest)
+{
+    const std::string shm_name("shm_wait");
+    ShmRemover auto_remove(shm_name);
+    SharedMemory shm(shm_name, 1024*1024);
+    ShmMsgQueue q(shm, 64);
+    for (int i = 0; i < 2; ++i) {
+        int ms = i * 100;
+        printf("Timeout Test %4d: ", ms);
+        boost::timer::auto_cpu_timer timer;
+        BHMsg msg;
+        bool r = q.Recv(msg, ms);
+        BOOST_CHECK(!r);
+    }
+}
+
+BOOST_AUTO_TEST_CASE(RefCountTest)
+{
+    const std::string shm_name("ShmRefCount");
+    ShmRemover auto_remove(shm_name);
+    SharedMemory shm(shm_name, 1024*1024);
+
+    MsgI m0(shm.Alloc(1000), shm.New<RefCount>());
+    BOOST_CHECK(m0.IsCounted());
+    BOOST_CHECK_EQUAL(m0.Count(), 1);
+    MsgI m1 = m0;
+    BOOST_CHECK(m1.IsCounted());
+    BOOST_CHECK_EQUAL(m1.AddRef(), 2);
+    BOOST_CHECK_EQUAL(m0.AddRef(), 3);
+    BOOST_CHECK_EQUAL(m0.Release(shm), 2);
+    BOOST_CHECK_EQUAL(m0.Release(shm), 1);
+    BOOST_CHECK_EQUAL(m1.Release(shm), 0);
+    BOOST_CHECK(!m1.IsCounted());
+}
+
diff --git a/utest/speed_test.cpp b/utest/speed_test.cpp
new file mode 100644
index 0000000..c7f8d4f
--- /dev/null
+++ b/utest/speed_test.cpp
@@ -0,0 +1,197 @@
+/*
+ * =====================================================================================
+ *
+ *       Filename:  speed_test.cpp
+ *
+ *    Description:  
+ *
+ *        Version:  1.0
+ *        Created:  2021骞�03鏈�30鏃� 11鏃�35鍒�21绉�
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  Li Chao (), 
+ *   Organization:  
+ *
+ * =====================================================================================
+ */
+#include "util.h"
+#include <boost/date_time/posix_time/posix_time.hpp>
+
+using namespace boost::posix_time;
+
+BOOST_AUTO_TEST_CASE(SpeedTest)
+{
+    const std::string shm_name("ShmSpeed");
+    ShmRemover auto_remove(shm_name);
+    const int mem_size = 1024*1024*50;
+    MQId id = boost::uuids::random_generator()();
+    const int timeout = 100;
+    const uint32_t data_size = 4000;
+
+    auto Writer = [&](int writer_id, uint64_t n) {
+        SharedMemory shm(shm_name, mem_size);
+        ShmMsgQueue mq(shm, 64);
+        std::string str(data_size, 'a');
+        MsgI msg;
+        DEFER1(msg.Release(shm););
+        msg.MakeRC(shm, MakeRequest(mq.Id(), str.data(), str.size()));
+        for (uint64_t i = 0; i < n; ++i) {
+            // mq.Send(id, str.data(), str.size(), timeout);
+            mq.Send(id, msg, timeout);
+        }
+    };
+    auto Reader = [&](int reader_id, std::atomic<bool> *run, bool isfork){
+        SharedMemory shm(shm_name, mem_size);
+        ShmMsgQueue mq(id, shm, 1000);
+        while(*run) {
+            BHMsg msg;
+            if (mq.Recv(msg, timeout)) {
+                // ok
+            } else if (isfork) {
+                exit(0); // for forked quit after 1s.
+            }
+        }
+    };
+    auto State = [&](std::atomic<bool> *run){
+        SharedMemory shm(shm_name, mem_size);
+        auto init = shm.get_free_memory();
+        printf("shm init : %ld\n", init);
+        while (*run) {
+            auto cur = shm.get_free_memory();
+            printf("shm used : %8ld/%ld\n", init - cur, init);
+            std::this_thread::sleep_for(1s);
+        }
+    };
+
+    int nwriters[] = {1,2,4};
+    int nreaders[] = {1,2};
+
+    auto Test = [&](auto &www, auto &rrr, bool isfork) {
+        for (auto nreader : nreaders) {
+            for (auto nwriter : nwriters) {
+                const uint64_t nmsg = 1000 * 1000 * 10 / nwriter;
+                const uint64_t total_msg = nmsg * nwriter;
+                std::atomic<bool> run(true);
+                std::this_thread::sleep_for(10ms);
+                boost::timer::auto_cpu_timer timer;
+                for (int i = 0; i < nreader; ++i) {
+                    rrr.Launch(Reader, i, &run, isfork);
+                }
+                for (int i = 0; i < nwriter; ++i) {
+                    www.Launch(Writer, i, nmsg);
+                }
+                www.WaitAll();
+                run.store(false);
+                rrr.WaitAll();
+                printf("%3d Write %ld msg  R(%3d) W(%3d), : ", getpid(), total_msg, nreader, nwriter);
+            }
+        }
+    };
+
+    std::atomic<bool> run(true);
+    ThreadManager state;
+    state.Launch(State, &run);
+    // typedef ProcessManager Manager;
+    // typedef ThreadManager Manager;
+    // const bool isfork = IsSameType<Manager, ProcessManager>::value;
+    ProcessManager pw, pr;
+    printf("================ Testing process io: =======================================================\n");
+    Test(pw, pr, true);
+    ThreadManager tw, tr;
+    printf("---------------- Testing thread io:  -------------------------------------------------------\n");
+    Test(tw, tr, false);
+    run.store(false);
+}
+
+// Request Reply Test
+BOOST_AUTO_TEST_CASE(RRTest)
+{
+    const std::string shm_name("ShmReqRep");
+    ShmRemover auto_remove(shm_name);
+    const int qlen = 64;
+    const size_t msg_length = 1000;
+    std::string msg_content(msg_length, 'a');
+    msg_content[20] = '\0';
+
+    SharedMemory shm(shm_name, 1024*1024*50);
+    auto Avail = [&]() { return shm.get_free_memory(); };
+    auto init_avail = Avail();
+    ShmMsgQueue srv(shm, qlen);
+    ShmMsgQueue cli(shm, qlen);
+
+    MsgI request_rc;
+    request_rc.MakeRC(shm, MakeRequest(cli.Id(), msg_content.data(), msg_content.size()));
+    MsgI reply_rc;
+    reply_rc.MakeRC(shm, MakeReply(msg_content.data(), msg_content.size()));
+
+    std::atomic<uint64_t> count(0);
+
+    std::atomic<ptime> last_time(Now() - seconds(1));
+    std::atomic<uint64_t> last_count(0);
+
+    auto Client = [&](int cli_id, int nmsg){
+        for (int i = 0; i < nmsg; ++i) {
+            auto Req = [&]() {
+                return cli.Send(srv.Id(), MakeRequest(cli.Id(), msg_content.data(), msg_content.size()), 100);
+            };
+            auto ReqRC = [&]() { return cli.Send(srv.Id(), request_rc, 1000); };
+
+            if (!ReqRC()) {
+                printf("********** client send error.\n");
+                continue;
+            }
+            BHMsg msg;
+            if (!cli.Recv(msg, 1000)) {
+                printf("********** client recv error.\n");
+            } else {
+                ++count;
+                auto cur = Now();
+                if (last_time.exchange(cur) < cur) {
+                    std::cout << "time: " << cur;
+                    printf(", total msg:%10ld, speed:[%8ld/s], used mem:%8ld, refcount:%d\n",
+                           count.load(), count - last_count.exchange(count), init_avail - Avail(), request_rc.Count());
+                }
+
+            }
+        }
+    };
+
+    std::atomic<bool> stop(false);
+    auto Server = [&](){
+        BHMsg req;
+        while (!stop) {
+            if (srv.Recv(req, 100) && req.type() == kMsgTypeRequest) {
+                auto &mqid = req.route()[0].mq_id();
+                MQId src_id;
+                memcpy(&src_id, mqid.data(), sizeof(src_id));
+                auto Reply = [&]() {
+                    return srv.Send(src_id, MakeReply(msg_content.data(), msg_content.size()), 100);
+                };
+                auto ReplyRC = [&](){ return srv.Send(src_id, reply_rc, 100); };
+
+                if (ReplyRC()) {
+                }
+            }
+        }
+    };
+
+    boost::timer::auto_cpu_timer timer;
+    DEFER1(printf("Request Reply Test:"););
+
+    ThreadManager clients, servers;
+    for (int i = 0; i < qlen; ++i) { servers.Launch(Server); }
+    int ncli = 100*1;
+    uint64_t nmsg = 100*100*2;
+    printf("client threads: %d, msgs : %ld, total msg: %ld\n", ncli, nmsg, ncli * nmsg);
+    for (int i = 0; i < ncli; ++i) { clients.Launch(Client, i, nmsg); }
+    clients.WaitAll();
+    printf("request ok: %ld\n", count.load());
+    stop = true;
+    servers.WaitAll();
+    BOOST_CHECK(request_rc.IsCounted());
+    BOOST_CHECK_EQUAL(request_rc.Count(), 1);
+    request_rc.Release(shm);
+    BOOST_CHECK(!request_rc.IsCounted());
+    // BOOST_CHECK_THROW(reply.Count(), int);
+}
diff --git a/utest/utest.cpp b/utest/utest.cpp
index a074f41..b5acc3b 100644
--- a/utest/utest.cpp
+++ b/utest/utest.cpp
@@ -2,391 +2,42 @@
 #include <string>
 #include <vector>
 #include <thread>
-#include <chrono>
 #include <atomic>
-#include <boost/noncopyable.hpp>
-#include <boost/timer/timer.hpp>
-#include <boost/test/unit_test.hpp>
-#include <boost/date_time/posix_time/posix_time.hpp>
-#include <boost/date_time/microsec_time_clock.hpp>
 #include <boost/uuid/uuid_generators.hpp>
 #include <boost/uuid/uuid_io.hpp>
-#include "shm_queue.h"
-#include "bh_util.h"
-#include <sys/types.h>
-#include <sys/wait.h>
 #include "pubsub.h"
 #include "defs.h"
-
-using namespace std::chrono_literals;
-using namespace bhome_msg;
-using namespace bhome_shm;
-
-using namespace boost::posix_time;
-auto Now = []() { return second_clock::universal_time(); };
-
-auto F()
-{
-	return [](){};
-}
-struct s1000 { char a[1000]; };
-
-typedef std::function<void(void)> FuncVV;
-class ScopeCall : private boost::noncopyable {
-    FuncVV f_;
-public:
-    ScopeCall(FuncVV f):f_(f) { f_(); }
-    ~ScopeCall() { f_(); }
-};
-class ThreadManager {
-    std::vector<std::thread> threads_;
-public:
-    ~ThreadManager() { WaitAll(); }
-    template <class T, class...P>
-    void Launch(T t, P...p) { threads_.emplace_back(t, p...); }
-    void WaitAll() {
-        for (auto &t : threads_) {
-            if (t.joinable()) {
-                t.join();
-            }
-        }
-    }
-};
-class ProcessManager {
-    std::vector<pid_t> procs_;
-public:
-    ~ProcessManager() { WaitAll(); }
-    template <class T, class ...P>
-    void Launch(T t, P...p) {
-        auto pid = fork();
-        if (pid == 0) {
-            // child
-            t(p...);
-            exit(0);
-        } else if (pid != -1) { // Ok
-            procs_.push_back(pid);
-        }
-    };
-    void WaitAll() {
-        for (auto &pid: procs_) {
-            int status = 0;
-            int options = WUNTRACED | WCONTINUED;
-            waitpid(pid, &status, options);
-        }
-        procs_.clear();
-    }
-};
-struct ShmRemover {
-    std::string name_;
-    ShmRemover(const std::string &name):name_(name) { SharedMemory::Remove(name_); }
-    ~ShmRemover() { SharedMemory::Remove(name_); }
-};
+#include "util.h"
 
 template <class A, class B> struct IsSameType { static const bool value = false; };
 template <class A> struct IsSameType<A,A> { static const bool value = true; };
 
-BOOST_AUTO_TEST_CASE(BasicTest)
+
+BOOST_AUTO_TEST_CASE(ShmTest)
 {
-    const std::string shm_name("basic");
-    ShmRemover auto_remove(shm_name);
-    SharedMemory shm(shm_name, 1024*1024*10);
-    auto Avail = [&]() { return shm.get_free_memory(); };
-
-    offset_ptr<const void> p;
-    BOOST_CHECK(!p);
-    BOOST_CHECK(p.get() == 0);
-    p = 0;
-    BOOST_CHECK(!p);
-    BOOST_CHECK(p.get() == 0);
-    const char *str = "basic";
-    p = str;
-    BOOST_CHECK(p);
-    BOOST_CHECK(p.get() == str);
-    p = 0;
-    BOOST_CHECK(!p);
-    BOOST_CHECK(p.get() == 0);
-
-
-    auto init_avail = Avail();
-
-    auto BasicTest = [&](int tid, int nloop) {
-        auto Code = [&](int id) {
-
-            typedef ShmObject<s1000> Int;
-            std::string name = std::to_string(id);
-            auto a0 = Avail();
-            Int i1(shm, name);
-            auto a1 = Avail();
-            BOOST_CHECK_LT(a1, a0);
-            printf("s1000 size: %ld\n", a0 - a1);
-            i1->a[0] = 5;
-            Int i2(shm, name);
-            auto a2 = Avail();
-            BOOST_CHECK_EQUAL(a1, a2);
-            BOOST_CHECK_EQUAL(i1.data(), i2.data());
-            int i = i1.Remove();
-            BOOST_CHECK_EQUAL(Avail(), a0);
-
-            {
-                auto old = Avail();
-                void *p = shm.Alloc(1024);
-                shm.Dealloc(p);
-                BOOST_CHECK_EQUAL(old, Avail());
-            }
-
-            bool r = shared_memory_object::remove(shm_name.c_str());
-            BOOST_CHECK(r);
-        };
-        for (int i = 0; i < nloop; ++i) {
-            Code(i + tid*nloop);
-        }
-    };
-    
-    // boost::timer::auto_cpu_timer timer;
-    ThreadManager threads;
-    int nthread = 1;
-    int nloop = 1;
-    for (int i = 0; i < nthread; ++i)
+    const int size = 1024*1024;
+    const std::string shm_name("ShmRemoveTest");
+    SharedMemory m0(shm_name, size);
+    int *p = m0.find_or_construct<int>("abc")(100);
+    if (p) {
+        printf("*p = %d\n", *p);
+        ++*p;
+    }
     {
-        threads.Launch(BasicTest, i, nloop);
+        SharedMemory m1(shm_name, size);
+        m1.Remove();
+        // m1.Remove();
     }
-    BOOST_CHECK_EQUAL(init_avail, Avail());
-}
-
-BOOST_AUTO_TEST_CASE(ForkTest)
-{
-    ProcessManager procs;
-    const int nproc = 10;
-
-    printf("Testing fork:\n");
-
-    auto child = [&](int id) {
-        std::this_thread::sleep_for(100ms *id);
-        printf("child id: %3d/%d ends\r", id, nproc);
-    };
-
-    for (int i = 0; i < nproc; ++i) {
-        procs.Launch(child, i+1);
+    if (p) {
+        printf("again *p = %d\n", *p);
+        // ++*p;
     }
-}
-
-BOOST_AUTO_TEST_CASE(TimedWaitTest)
-{
-    const std::string shm_name("shm_wait");
-    ShmRemover auto_remove(shm_name);
-    SharedMemory shm(shm_name, 1024*1024);
-    ShmMsgQueue q(shm, 64);
-    for (int i = 0; i < 2; ++i) {
-        int ms = i * 100;
-        printf("Timeout Test %4d: ", ms);
-        boost::timer::auto_cpu_timer timer;
-        BHMsg msg;
-        bool r = q.Recv(msg, ms);
-        BOOST_CHECK(!r);
-    }
-}
-
-BOOST_AUTO_TEST_CASE(RefCountTest)
-{
-    const std::string shm_name("ShmRefCount");
-    ShmRemover auto_remove(shm_name);
-    SharedMemory shm(shm_name, 1024*1024);
-
-    MsgI m0(shm.Alloc(1000), shm.New<RefCount>());
-    BOOST_CHECK(m0.IsCounted());
-    BOOST_CHECK_EQUAL(m0.Count(), 1);
-    MsgI m1 = m0;
-    BOOST_CHECK(m1.IsCounted());
-    BOOST_CHECK_EQUAL(m1.AddRef(), 2);
-    BOOST_CHECK_EQUAL(m0.AddRef(), 3);
-    BOOST_CHECK_EQUAL(m0.Release(shm), 2);
-    BOOST_CHECK_EQUAL(m0.Release(shm), 1);
-    BOOST_CHECK_EQUAL(m1.Release(shm), 0);
-    BOOST_CHECK(!m1.IsCounted());
-}
-
-
-
-BOOST_AUTO_TEST_CASE(SpeedTest)
-{
-    const std::string shm_name("ShmSpeed");
-    ShmRemover auto_remove(shm_name);
-    const int mem_size = 1024*1024*50;
-    MQId id = boost::uuids::random_generator()();
-    const int timeout = 100;
-    const uint32_t data_size = 4000;
-
-    auto Writer = [&](int writer_id, uint64_t n) {
-        SharedMemory shm(shm_name, mem_size);
-        ShmMsgQueue mq(shm, 64);
-        std::string str(data_size, 'a');
-        MsgI msg;
-        DEFER1(msg.Release(shm););
-        msg.MakeRC(shm, MakeRequest(mq.Id(), str.data(), str.size()));
-        for (uint64_t i = 0; i < n; ++i) {
-            // mq.Send(id, str.data(), str.size(), timeout);
-            mq.Send(id, msg, timeout);
-        }
-    };
-    auto Reader = [&](int reader_id, std::atomic<bool> *run, bool isfork){
-        SharedMemory shm(shm_name, mem_size);
-        ShmMsgQueue mq(id, shm, 1000);
-        while(*run) {
-            BHMsg msg;
-            if (mq.Recv(msg, timeout)) {
-                // ok
-            } else if (isfork) {
-                exit(0); // for forked quit after 1s.
-            }
-        }
-    };
-    auto State = [&](std::atomic<bool> *run){
-        SharedMemory shm(shm_name, mem_size);
-        auto init = shm.get_free_memory();
-        printf("shm init : %ld\n", init);
-        while (*run) {
-            auto cur = shm.get_free_memory();
-            printf("shm used : %8ld/%ld\n", init - cur, init);
-            std::this_thread::sleep_for(1s);
-        }
-    };
-
-    int nwriters[] = {1,2,4};
-    int nreaders[] = {1,2};
-
-    auto Test = [&](auto &www, auto &rrr, bool isfork) {
-        for (auto nreader : nreaders) {
-            for (auto nwriter : nwriters) {
-                const uint64_t nmsg = 1000 * 1000 * 10 / nwriter;
-                const uint64_t total_msg = nmsg * nwriter;
-                std::atomic<bool> run(true);
-                std::this_thread::sleep_for(10ms);
-                boost::timer::auto_cpu_timer timer;
-                for (int i = 0; i < nreader; ++i) {
-                    rrr.Launch(Reader, i, &run, isfork);
-                }
-                for (int i = 0; i < nwriter; ++i) {
-                    www.Launch(Writer, i, nmsg);
-                }
-                www.WaitAll();
-                run.store(false);
-                rrr.WaitAll();
-                printf("%3d Write %ld msg  R(%3d) W(%3d), : ", getpid(), total_msg, nreader, nwriter);
-            }
-        }
-    };
-
-    std::atomic<bool> run(true);
-    ThreadManager state;
-    state.Launch(State, &run);
-    // typedef ProcessManager Manager;
-    // typedef ThreadManager Manager;
-    // const bool isfork = IsSameType<Manager, ProcessManager>::value;
-    ProcessManager pw, pr;
-    printf("================ Testing process io: =======================================================\n");
-    Test(pw, pr, true);
-    ThreadManager tw, tr;
-    printf("---------------- Testing thread io:  -------------------------------------------------------\n");
-    Test(tw, tr, false);
-    run.store(false);
-}
-
-// Request Reply Test
-BOOST_AUTO_TEST_CASE(RRTest)
-{
-    const std::string shm_name("ShmReqRep");
-    ShmRemover auto_remove(shm_name);
-    const int qlen = 64;
-    const size_t msg_length = 1000;
-    std::string msg_content(msg_length, 'a');
-    msg_content[20] = '\0';
-
-    SharedMemory shm(shm_name, 1024*1024*50);
-    auto Avail = [&]() { return shm.get_free_memory(); };
-    auto init_avail = Avail();
-    ShmMsgQueue srv(shm, qlen);
-    ShmMsgQueue cli(shm, qlen);
-
-    MsgI request_rc;
-    request_rc.MakeRC(shm, MakeRequest(cli.Id(), msg_content.data(), msg_content.size()));
-    MsgI reply_rc;
-    reply_rc.MakeRC(shm, MakeReply(msg_content.data(), msg_content.size()));
-
-    std::atomic<uint64_t> count(0);
-
-    std::atomic<ptime> last_time(Now() - seconds(1));
-    std::atomic<uint64_t> last_count(0);
-
-    auto Client = [&](int cli_id, int nmsg){
-        for (int i = 0; i < nmsg; ++i) {
-            auto Req = [&]() {
-                return cli.Send(srv.Id(), MakeRequest(cli.Id(), msg_content.data(), msg_content.size()), 100);
-            };
-            auto ReqRC = [&]() { return cli.Send(srv.Id(), request_rc, 1000); };
-
-            if (!ReqRC()) {
-                printf("********** client send error.\n");
-                continue;
-            }
-            BHMsg msg;
-            if (!cli.Recv(msg, 1000)) {
-                printf("********** client recv error.\n");
-            } else {
-                ++count;
-                auto cur = Now();
-                if (last_time.exchange(cur) < cur) {
-                    std::cout << "time: " << cur;
-                    printf(", total msg:%10ld, speed:[%8ld/s], used mem:%8ld, refcount:%d\n",
-                           count.load(), count - last_count.exchange(count), init_avail - Avail(), request_rc.Count());
-                }
-
-            }
-        }
-    };
-
-    std::atomic<bool> stop(false);
-    auto Server = [&](){
-        BHMsg req;
-        while (!stop) {
-            if (srv.Recv(req, 100) && req.type() == kMsgTypeRequest) {
-                auto &mqid = req.route()[0].mq_id();
-                MQId src_id;
-                memcpy(&src_id, mqid.data(), sizeof(src_id));
-                auto Reply = [&]() {
-                    return srv.Send(src_id, MakeReply(msg_content.data(), msg_content.size()), 100);
-                };
-                auto ReplyRC = [&](){ return srv.Send(src_id, reply_rc, 100); };
-
-                if (ReplyRC()) {
-                }
-            }
-        }
-    };
-
-    boost::timer::auto_cpu_timer timer;
-    DEFER1(printf("Request Reply Test:"););
-
-    ThreadManager clients, servers;
-    for (int i = 0; i < qlen; ++i) { servers.Launch(Server); }
-    int ncli = 100*1;
-    uint64_t nmsg = 100*100*2;
-    printf("client threads: %d, msgs : %ld, total msg: %ld\n", ncli, nmsg, ncli * nmsg);
-    for (int i = 0; i < ncli; ++i) { clients.Launch(Client, i, nmsg); }
-    clients.WaitAll();
-    printf("request ok: %ld\n", count.load());
-    stop = true;
-    servers.WaitAll();
-    BOOST_CHECK(request_rc.IsCounted());
-    BOOST_CHECK_EQUAL(request_rc.Count(), 1);
-    request_rc.Release(shm);
-    BOOST_CHECK(!request_rc.IsCounted());
-    // BOOST_CHECK_THROW(reply.Count(), int);
 }
 
 BOOST_AUTO_TEST_CASE(PubSubTest)
 {
     const std::string shm_name("ShmPubSub");
-    ShmRemover auto_remove(shm_name);
+    ShmRemover auto_remove(shm_name); //remove twice? in case of killed?
     SharedMemory shm(shm_name, 1024*1024*50);
     auto Avail = [&]() { return shm.get_free_memory(); };
     auto init_avail = Avail();
@@ -404,7 +55,7 @@
     const int timeout = 1000;
     auto Sub = [&](int id, const std::vector<std::string> &topics) {
         ShmMsgQueue client(shm, 8);
-        client.Send(kBusQueueId, MakeSub(client.Id(), topics), timeout);
+        client.Send(kBHBusQueueId, MakeSub(client.Id(), topics), timeout);
         for (int i = 0; i < nmsg * topics.size(); ++i) {
             BHMsg msg;
             if (client.Recv(msg, 1000)) {
@@ -434,7 +85,7 @@
         ShmMsgQueue provider(shm, 0);
         for (int i = 0; i < nmsg; ++i) {
             std::string data = topic + std::to_string(i);
-            bool r = provider.Send(kBusQueueId, MakePub(topic, data.data(), data.size()), timeout);
+            bool r = provider.Send(kBHBusQueueId, MakePub(topic, data.data(), data.size()), timeout);
             if (!r) {
                 printf("pub ret: %s\n", r ? "ok" : "fail");
             }
diff --git a/utest/util.h b/utest/util.h
new file mode 100644
index 0000000..ac1d58d
--- /dev/null
+++ b/utest/util.h
@@ -0,0 +1,99 @@
+/*
+ * =====================================================================================
+ *
+ *       Filename:  util.h
+ *
+ *    Description:  
+ *
+ *        Version:  1.0
+ *        Created:  2021骞�03鏈�30鏃� 11鏃�24鍒�26绉�
+ *       Revision:  none
+ *       Compiler:  gcc
+ *
+ *         Author:  Li Chao (), 
+ *   Organization:  
+ *
+ * =====================================================================================
+ */
+
+#ifndef UTIL_W8A0OA5U
+#define UTIL_W8A0OA5U
+
+#include <functional>
+#include <vector>
+#include <thread>
+#include <stdlib.h>
+#include <chrono>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <boost/noncopyable.hpp>
+#include <boost/timer/timer.hpp>
+#include <boost/test/unit_test.hpp>
+#include <boost/date_time/posix_time/posix_time.hpp>
+#include "shm.h"
+#include "shm_queue.h"
+#include "msg.h"
+#include "bh_util.h"
+
+using namespace boost::posix_time;
+inline ptime Now() { return second_clock::universal_time(); };
+
+using namespace std::chrono_literals;
+
+typedef std::function<void(void)> FuncVV;
+
+class ScopeCall : private boost::noncopyable {
+    FuncVV f_;
+public:
+    ScopeCall(FuncVV f):f_(f) { f_(); }
+    ~ScopeCall() { f_(); }
+};
+class ThreadManager {
+    std::vector<std::thread> threads_;
+public:
+    ~ThreadManager() { WaitAll(); }
+    template <class T, class...P>
+    void Launch(T t, P...p) { threads_.emplace_back(t, p...); }
+    void WaitAll() {
+        for (auto &t : threads_) {
+            if (t.joinable()) {
+                t.join();
+            }
+        }
+    }
+};
+class ProcessManager {
+    std::vector<pid_t> procs_;
+public:
+    ~ProcessManager() { WaitAll(); }
+    template <class T, class ...P>
+    void Launch(T t, P...p) {
+        auto pid = fork();
+        if (pid == 0) {
+            // child
+            t(p...);
+            exit(0);
+        } else if (pid != -1) { // Ok
+            procs_.push_back(pid);
+        }
+    };
+    void WaitAll() {
+        for (auto &pid: procs_) {
+            int status = 0;
+            int options = WUNTRACED | WCONTINUED;
+            waitpid(pid, &status, options);
+        }
+        procs_.clear();
+    }
+};
+
+using namespace bhome_shm;
+using namespace bhome_msg;
+
+struct ShmRemover {
+    std::string name_;
+    ShmRemover(const std::string &name):name_(name) { SharedMemory::Remove(name_); }
+    ~ShmRemover() { SharedMemory::Remove(name_); }
+};
+
+#endif // end of include guard: UTIL_W8A0OA5U

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