add: [concur] define concurrent algorithms separately

include/libconcur/concurrent.h

@@ -1,11 +1,17 @@
+/**
+ * @file libconcur/concurrent.h
+ * @author mutouyun (orz@orzz.org)
+ * @brief Define different policies for concurrent queue
+ * @date 2022-11-07
+ */
+#pragma once
 
 #include <cstdint>
 #include <limits>
 
-#include "libipc/def.h"
+#include "libconcur/def.h"
 
-LIBIPC_NAMESPACE_BEG_
-namespace concurrent {
+LIBCONCUR_NAMESPACE_BEG_
 
 /// @brief The queue index type.
 using index_t = std::uint32_t;
@@ -22,5 +28,4 @@ enum : flag_t {
 
 } // namespace state
 
-} // namespace concurrent
-LIBIPC_NAMESPACE_END_
+LIBCONCUR_NAMESPACE_END_

include/libconcur/def.h

@@ -0,0 +1,34 @@
+/**
+ * @file libconcur/def.h
+ * @author mutouyun (orz@orzz.org)
+ * @brief Define the trivial configuration information for concurrency
+ * @date 2022-11-07
+ */
+#pragma once
+
+#include <cstddef>  // std::max_align_t
+#include <new>      // std::hardware_destructive_interference_size
+
+#include "libimp/detect_plat.h"
+
+#define LIBCONCUR_               concur
+#define LIBCONCUR_NAMESPACE_BEG_ namespace LIBCONCUR_ {
+#define LIBCONCUR_NAMESPACE_END_ }
+
+LIBCONCUR_NAMESPACE_BEG_
+
+/// @brief Constants.
+
+enum : std::size_t {
+  /// @brief Minimum offset between two objects to avoid false sharing.
+  /// @see https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
+  cache_line_size =
+#if defined(LIBIMP_CPP_17) && defined(__cpp_lib_hardware_interference_size)
+    ( std::hardware_destructive_interference_size < alignof(std::max_align_t) ) ? 64 
+    : std::hardware_destructive_interference_size,
+#else
+    64,
+#endif
+};
+
+LIBCONCUR_NAMESPACE_END_

include/libipc/def.h

@@ -6,11 +6,8 @@
  */
 #pragma once
 
-#include <cstddef>  // std::max_align_t
+#include <cstddef>
 #include <cstdint>
-#include <new>      // std::hardware_destructive_interference_size
-
-#include "libimp/detect_plat.h"
 
 #define LIBIPC_               ipc
 #define LIBIPC_NAMESPACE_BEG_ namespace LIBIPC_ {
@@ -18,7 +15,7 @@
 
 LIBIPC_NAMESPACE_BEG_
 
-// constants
+/// @brief Constants.
 
 struct prot {
   using type = std::uint32_t;
@@ -38,16 +35,4 @@ struct mode {
   };
 };
 
-enum : std::size_t {
-  /// @brief Minimum offset between two objects to avoid false sharing.
-  /// @see https://en.cppreference.com/w/cpp/thread/hardware_destructive_interference_size
-  cache_line_size =
-#if defined(LIBIMP_CPP_17) && defined(__cpp_lib_hardware_interference_size)
-    ( std::hardware_destructive_interference_size < alignof(std::max_align_t) ) ? 64 
-    : std::hardware_destructive_interference_size,
-#else
-    64,
-#endif
-};
-
 LIBIPC_NAMESPACE_END_

test/test_concur_concurrent.cpp

@@ -0,0 +1,16 @@
+
+#include <iostream>
+#include <cstddef>
+
+#include "gtest/gtest.h"
+
+#include "libconcur/concurrent.h"
+
+TEST(concurrent, cache_line_size) {
+  std::cout << concur::cache_line_size << "\n";
+  EXPECT_TRUE(concur::cache_line_size >= alignof(std::max_align_t));
+}
+
+TEST(concurrent, index_and_flag) {
+  EXPECT_TRUE(sizeof(concur::index_t) < sizeof(concur::state::flag_t));
+}

test/test_ipc_concurrent.cpp

@@ -1,16 +0,0 @@
-
-#include <iostream>
-#include <cstddef>
-
-#include "gtest/gtest.h"
-
-#include "libipc/concurrent.h"
-
-TEST(concurrent, cache_line_size) {
-  std::cout << ipc::cache_line_size << "\n";
-  EXPECT_TRUE(ipc::cache_line_size >= alignof(std::max_align_t));
-}
-
-TEST(concurrent, index_and_flag) {
-  EXPECT_TRUE(sizeof(ipc::concurrent::index_t) < sizeof(ipc::concurrent::state::flag_t));
-}