fix clang-test crash

include/ipc.h

@@ -21,6 +21,8 @@ IPC_EXPORT handle_t connect   (char const * name);
 IPC_EXPORT void     disconnect(handle_t h);
 
 IPC_EXPORT std::size_t recv_count(handle_t h);
+IPC_EXPORT void        clear_recv(handle_t h);
+IPC_EXPORT void        clear_recv(char const * name);
 
 IPC_EXPORT bool   send(handle_t h, void const * data, std::size_t size);
 IPC_EXPORT buff_t recv(handle_t h);

src/ipc.cpp

@@ -38,8 +38,8 @@ constexpr queue_t* queue_of(handle_t h) {
     return static_cast<queue_t*>(h);
 }
 
-inline std::atomic_size_t* acc_of(queue_t* queue) {
-    return reinterpret_cast<std::atomic_size_t*>(queue->elems()) - 1;
+inline std::atomic_size_t* acc_of(queue_t* que) {
+    return reinterpret_cast<std::atomic_size_t*>(que->elems()) - 1;
 }
 
 } // internal-linkage
@@ -72,11 +72,25 @@ void disconnect(handle_t h) {
 }
 
 std::size_t recv_count(handle_t h) {
-    auto queue = queue_of(h);
-    if (queue == nullptr) {
+    auto que = queue_of(h);
+    if (que == nullptr) {
         return error_count;
     }
-    return queue->conn_count();
+    return que->conn_count();
+}
+
+void clear_recv(handle_t h) {
+    auto* head = acc_of(queue_of(h));
+    if (head == nullptr) {
+        return;
+    }
+    std::memset(head, 0, sizeof(shm_info_t));
+}
+
+void clear_recv(char const * name) {
+    auto h = ipc::connect(name);
+    ipc::clear_recv(h);
+    ipc::disconnect(h);
 }
 
 bool send(handle_t h, void const * data, std::size_t size) {
@@ -86,12 +100,12 @@ bool send(handle_t h, void const * data, std::size_t size) {
     if (size == 0) {
         return false;
     }
-    auto queue = queue_of(h);
-    if (queue == nullptr) {
+    auto que = queue_of(h);
+    if (que == nullptr) {
         return false;
     }
     // calc a new message id
-    auto msg_id = acc_of(queue)->fetch_add(1, std::memory_order_relaxed);
+    auto msg_id = acc_of(que)->fetch_add(1, std::memory_order_relaxed);
     // push message fragment, one fragment size is data_length
     int offset = 0;
     for (int i = 0; i < static_cast<int>(size / data_length); ++i, offset += data_length) {
@@ -100,7 +114,7 @@ bool send(handle_t h, void const * data, std::size_t size) {
             msg_id, { 0 }
         };
         std::memcpy(msg.data_, static_cast<byte_t const *>(data) + offset, data_length);
-        queue->push(msg);
+        que->push(msg);
     }
     // if remain > 0, this is the last message fragment
     int remain = static_cast<int>(size) - offset;
@@ -111,7 +125,7 @@ bool send(handle_t h, void const * data, std::size_t size) {
         };
         std::memcpy(msg.data_, static_cast<byte_t const *>(data) + offset,
                                static_cast<std::size_t>(remain));
-        queue->push(msg);
+        que->push(msg);
     }
     return true;
 }
@@ -124,10 +138,10 @@ buff_t recv(handle_t const * hs, std::size_t size) {
     thread_local std::vector<queue_t*> q_arr(size);
     q_arr.clear(); // make the size to 0
     for (size_t i = 0; i < size; ++i) {
-        auto queue = queue_of(hs[i]);
-        if (queue == nullptr) continue;
-        queue->connect(); // wouldn't connect twice
-        q_arr.push_back(queue);
+        auto que = queue_of(hs[i]);
+        if (que == nullptr) continue;
+        que->connect(); // wouldn't connect twice
+        q_arr.push_back(que);
     }
     if (q_arr.empty()) {
         return {};
@@ -190,6 +204,7 @@ route::route(route&& rhs)
 }
 
 route::~route() {
+    disconnect();
     p_->clear();
 }
 
@@ -223,6 +238,7 @@ bool route::connect(char const * name) {
 
 void route::disconnect() {
     ipc::disconnect(impl(p_)->h_);
+    impl(p_)->h_ = nullptr;
 }
 
 std::size_t route::recv_count() const {

src/shm.cpp

@@ -10,20 +10,14 @@ namespace shm {
 
 class handle::handle_ : public pimpl<handle_> {
 public:
-    handle* t_ = nullptr;
     void* m_ = nullptr;
 
-    std::string n_ {};
+    std::string n_;
     std::size_t s_ = 0;
-
-    handle_() = default;
-    handle_(handle* t) : t_{t} {}
-
-    ~handle_() { t_->release(); }
 };
 
 handle::handle()
-    : p_(p_->make(this)) {
+    : p_(p_->make()) {
 }
 
 handle::handle(char const * name, std::size_t size)
@@ -37,6 +31,7 @@ handle::handle(handle&& rhs)
 }
 
 handle::~handle() {
+    release();
     p_->clear();
 }
 

test/test.h

@@ -47,8 +47,10 @@ template <>
 struct test_verify<void> {
     test_verify   (int)      {}
     void prepare  (void*)    {}
-    void push_data(int, ...) {}
     void verify   (int, int) {}
+
+    template <typename U>
+    void push_data(int, U&&) {}
 };
 
 template <typename T>
@@ -70,10 +72,7 @@ void benchmark_prod_cons(T* cq) {
         t = std::thread{[&, cid] {
             vf.prepare(&t);
             auto cn = tcq.connect();
-
-            using namespace std::placeholders;
-            tcq.recv(cn, std::bind(&test_verify<V>::push_data, &vf, cid, _1));
-
+            tcq.recv(cn, [&](auto&& msg) { vf.push_data(cid, msg); });
             tcq.disconnect(cn);
             if (++fini != std::extent<decltype(consumers)>::value) return;
             sw.print_elapsed(N, M, Loops);

test/test_circ.cpp

@@ -5,7 +5,6 @@
 #include <new>
 #include <vector>
 #include <unordered_map>
-#include <functional>
 
 #include "circ_elem_array.h"
 #include "circ_queue.h"

test/test_ipc.cpp

@@ -45,8 +45,7 @@ struct test_cq<ipc::route> {
 
     test_cq(void*)
         : conn_name_("test-ipc-route") {
-        auto watcher = connect();
-        QCOMPARE(watcher.recv_count(), static_cast<std::size_t>(0));
+        ipc::clear_recv(conn_name_.c_str());
     }
 
     cn_t connect() {
@@ -58,8 +57,8 @@ struct test_cq<ipc::route> {
     }
 
     void wait_start(int M) {
-        auto watcher = connect();
-        while (watcher.recv_count() != static_cast<std::size_t>(M)) {
+        auto watcher = ipc::connect(conn_name_.c_str());
+        while (ipc::recv_count(watcher) != static_cast<std::size_t>(M)) {
             std::this_thread::yield();
         }
     }
@@ -257,6 +256,7 @@ void Unit::test_rw_lock() {
 void Unit::test_send_recv() {
     auto h = ipc::connect("my-ipc");
     QVERIFY(h != nullptr);
+    ipc::clear_recv(h);
     char data[] = "hello ipc!";
     QVERIFY(ipc::send(h, data, sizeof(data)));
     auto got = ipc::recv(h);
@@ -265,6 +265,8 @@ void Unit::test_send_recv() {
 }
 
 void Unit::test_route() {
+    ipc::clear_recv("my-ipc-route");
+
     auto wait_for_handshake = [](int id) {
         ipc::route cc { "my-ipc-route" };
         std::string cfm = "copy:" + std::to_string(id), ack = "re-" + cfm;