Remove Winsocks functionality

CMakeLists.txt

@@ -550,15 +550,6 @@ target_include_directories(openPMD PUBLIC
     $<INSTALL_INTERFACE:include>
 )
 
-# Winsock library for gethostname() function on Windows
-if(WIN32)
-    # need to link this publically as WSAStartup() and WSACleanup() need to be
-    # called surrounding the gethostname() function on Windows
-    # and it needs to be done at client site since the winsocks API is
-    # initialized statically per process....
-    target_link_libraries(openPMD PUBLIC ws2_32)
-endif()
-
 # Catch2 for unit tests
 if(openPMD_BUILD_TESTING)
     add_library(openPMD::thirdparty::Catch2 INTERFACE IMPORTED)

include/openPMD/ChunkInfo.hpp

@@ -97,7 +97,6 @@ namespace host_info
     enum class Method
     {
         POSIX_HOSTNAME,
-        WINSOCKS_HOSTNAME,
         MPI_PROCESSOR_NAME
     };
 
@@ -108,7 +107,6 @@ namespace host_info
      * Currently recognized are:
      *
      * * posix_hostname
-     * * winsocks_hostname
      * * mpi_processor_name
      *
      * For backwards compatibility reasons, "hostname" is also recognized as a
@@ -152,24 +150,27 @@ namespace host_info
     chunk_assignment::RankMeta byMethodCollective(MPI_Comm, Method);
 #endif
 
-/*
- * The following block contains one wrapper for each native hostname retrieval
- * method. The purpose is to have the same function pointer type for all
- * of them.
- */
+    /*
+     * The following block contains one wrapper for each native hostname
+     * retrieval method. The purpose is to have the same function pointer type
+     * for all of them.
+     */
 
-/*
- * @todo Replace _WIN32 with proper Winsocks macro,
- *       add POSIX availability macro.
- */
 #ifdef _WIN32
-    std::string winsocks_hostname();
+#define openPMD_POSIX_AVAILABLE false
 #else
+#define openPMD_POSIX_AVAILABLE true
+#endif
+
+#if openPMD_POSIX_AVAILABLE
     std::string posix_hostname();
 #endif
+
 #if openPMD_HAVE_MPI
     std::string mpi_processor_name();
 #endif
 
 } // namespace host_info
 } // namespace openPMD
+
+#undef openPMD_POSIX_AVAILABLE

src/ChunkInfo.cpp

@@ -24,14 +24,13 @@
 
 #include <utility>
 
-/*
- * @todo Replace _WIN32 with proper Winsocks macro,
- *       add POSIX availability macro.
- */
-
 #ifdef _WIN32
-#include <windows.h>
+#define openPMD_POSIX_AVAILABLE false
 #else
+#define openPMD_POSIX_AVAILABLE true
+#endif
+
+#if openPMD_POSIX_AVAILABLE
 #include <unistd.h>
 #endif
 
@@ -71,7 +70,6 @@ namespace host_info
         static std::map<std::string, Method> const map{
             {"posix_hostname", Method::POSIX_HOSTNAME},
             {"hostname", Method::POSIX_HOSTNAME},
-            {"winsocks_hostname", Method::WINSOCKS_HOSTNAME},
             {"mpi_processor_name", Method::MPI_PROCESSOR_NAME}};
         if (descr == "hostname")
         {
@@ -84,21 +82,13 @@ namespace host_info
         return map.at(descr);
     }
 
-// @todo do this properly
-#ifdef _WIN32
-#define openPMD_POSIX_AVAILABLE false
-#else
-#define openPMD_POSIX_AVAILABLE true
-#endif
     bool methodAvailable(Method method)
     {
         switch (method)
         {
 
         case Method::POSIX_HOSTNAME:
             return openPMD_POSIX_AVAILABLE;
-        case Method::WINSOCKS_HOSTNAME:
-            return !openPMD_POSIX_AVAILABLE;
         case Method::MPI_PROCESSOR_NAME:
             return openPMD_HAVE_MPI == 1;
         }
@@ -107,15 +97,13 @@ namespace host_info
 
     std::string byMethod(Method method)
     {
-        static std::map<Method, std::string (*)()> const map{
-#ifdef _WIN32
-            {Method::WINSOCKS_HOSTNAME, &winsocks_hostname}
-#else
-            {Method::POSIX_HOSTNAME, &posix_hostname}
+        static std::map<Method, std::string (*)()> const map
+        {
+#if openPMD_POSIX_AVAILABLE
+            {Method::POSIX_HOSTNAME, &posix_hostname},
 #endif
 #if openPMD_HAVE_MPI
-            ,
-            {Method::MPI_PROCESSOR_NAME, &mpi_processor_name}
+                {Method::MPI_PROCESSOR_NAME, &mpi_processor_name},
 #endif
         };
         try
@@ -162,19 +150,7 @@ namespace host_info
     }
 #endif
 
-#ifdef _WIN32
-    std::string winsocks_hostname()
-    {
-        char hostname[MAX_HOSTNAME_LENGTH];
-        if (gethostname(hostname, MAX_HOSTNAME_LENGTH))
-        {
-            throw std::runtime_error(
-                "[winsocks_hostname] Could not inquire hostname.");
-        }
-        std::string res(hostname);
-        return res;
-    }
-#else
+#if openPMD_POSIX_AVAILABLE
     std::string posix_hostname()
     {
         char hostname[MAX_HOSTNAME_LENGTH];
@@ -189,3 +165,5 @@ namespace host_info
 #endif
 } // namespace host_info
 } // namespace openPMD
+
+#undef openPMD_POSIX_AVAILABLE

src/binding/python/ChunkInfo.cpp

@@ -77,7 +77,6 @@ void init_Chunk(py::module &m)
 
     py::enum_<host_info::Method>(m, "HostInfo")
         .value("POSIX_HOSTNAME", host_info::Method::POSIX_HOSTNAME)
-        .value("WINSOCKS_HOSTNAME", host_info::Method::WINSOCKS_HOSTNAME)
         .value("MPI_PROCESSOR_NAME", host_info::Method::MPI_PROCESSOR_NAME)
 #if openPMD_HAVE_MPI
         .def(

test/SerialIOTest.cpp

@@ -1534,13 +1534,7 @@ TEST_CASE("dtype_test", "[serial]")
 inline void write_test(const std::string &backend)
 {
 #ifdef _WIN32
-    WSADATA wsaData;
-    WSAStartup(MAKEWORD(2, 0), &wsaData);
-    std::string jsonCfg = R"({"rank_table": "winsocks_hostname"})";
-    chunk_assignment::RankMeta compare{
-        {0,
-         host_info::byMethod(
-             host_info::methodFromStringDescription("winsocks_hostname"))}};
+    std::string jsonCfg = "{}";
 #else
     std::string jsonCfg = R"({"rank_table": "posix_hostname"})";
     chunk_assignment::RankMeta compare{
@@ -1649,11 +1643,8 @@ inline void write_test(const std::string &backend)
     o.close();
 
     Series read("../samples/serial_write." + backend, Access::READ_ONLY);
-    // need double parens here to avoid link errors to unprintableString
-    // on Windows
-    REQUIRE((read.mpiRanksMetaInfo(/* collective = */ false) == compare));
-#ifdef _WIN32
-    WSACleanup();
+#ifndef _WIN32
+    REQUIRE(read.mpiRanksMetaInfo(/* collective = */ false) == compare);
 #endif
 }
 
@@ -1810,9 +1801,7 @@ fileBased_add_EDpic(ParticleSpecies &e, uint64_t const num_particles)
 inline void fileBased_write_test(const std::string &backend)
 {
 #ifdef _WIN32
-    WSADATA wsaData;
-    WSAStartup(MAKEWORD(2, 0), &wsaData);
-    std::string jsonCfg = R"({"rank_table": "winsocks_hostname"})";
+    std::string jsonCfg = "{}";
 #else
     std::string jsonCfg = R"({"rank_table": "posix_hostname"})";
 #endif
@@ -2196,9 +2185,6 @@ inline void fileBased_write_test(const std::string &backend)
         close(dirfd);
     }
 #endif // defined(__unix__)
-#ifdef _WIN32
-    WSACleanup();
-#endif
 }
 
 TEST_CASE("fileBased_write_test", "[serial]")