Change DPCTLPlatformMgr_PrintInfo function to return char *

Author: vlad-perevezentsev

dpctl/_backend.pxd

@@ -262,7 +262,7 @@ cdef extern from "syclinterface/dpctl_sycl_platform_manager.h":
     cdef DPCTLSyclPlatformRef DPCTLPlatformVector_GetAt(
         DPCTLPlatformVectorRef,
         size_t index)
-    cdef void DPCTLPlatformMgr_PrintInfo(const DPCTLSyclPlatformRef, size_t)
+    cdef const char *DPCTLPlatformMgr_PrintInfo(const DPCTLSyclPlatformRef, size_t)
 
 
 cdef extern from "syclinterface/dpctl_sycl_platform_interface.h":

libsyclinterface/include/dpctl_sycl_platform_manager.h

@@ -61,8 +61,9 @@ DPCTL_DECLARE_VECTOR(Platform)
  *                          printed out.
  */
 DPCTL_API
-void DPCTLPlatformMgr_PrintInfo(__dpctl_keep const DPCTLSyclPlatformRef PRef,
-                                size_t verbosity);
+__dpctl_give const char *
+DPCTLPlatformMgr_PrintInfo(__dpctl_keep const DPCTLSyclPlatformRef PRef,
+                           size_t verbosity);
 
 /*! @} */
 

libsyclinterface/source/dpctl_sycl_platform_manager.cpp

@@ -27,6 +27,7 @@
 #include "dpctl_sycl_platform_manager.h"
 #include "Support/CBindingWrapping.h"
 #include "dpctl_error_handlers.h"
+#include "dpctl_string_utils.hpp"
 #include "dpctl_sycl_platform_interface.h"
 #include "dpctl_utils_helper.h"
 #include <CL/sycl.hpp>
@@ -41,7 +42,7 @@ namespace
 {
 DEFINE_SIMPLE_CONVERSION_FUNCTIONS(platform, DPCTLSyclPlatformRef);
 
-void platform_print_info_impl(const platform &p, size_t verbosity)
+std::string platform_print_info_impl(const platform &p, size_t verbosity)
 {
     std::stringstream ss;
 
@@ -96,7 +97,7 @@ void platform_print_info_impl(const platform &p, size_t verbosity)
             }
     }
 
-    std::cout << ss.str();
+    return ss.str();
 }
 
 } // namespace
@@ -106,15 +107,19 @@ void platform_print_info_impl(const platform &p, size_t verbosity)
 #include "dpctl_vector_templ.cpp"
 #undef EL
 
-void DPCTLPlatformMgr_PrintInfo(__dpctl_keep const DPCTLSyclPlatformRef PRef,
-                                size_t verbosity)
+__dpctl_give const char *
+DPCTLPlatformMgr_PrintInfo(__dpctl_keep const DPCTLSyclPlatformRef PRef,
+                           size_t verbosity)
 {
+    const char *cstr_info = nullptr;
     auto p = unwrap(PRef);
     if (p) {
-        platform_print_info_impl(*p, verbosity);
+        auto infostr = platform_print_info_impl(*p, verbosity);
+        cstr_info = dpctl::helper::cstring_from_string(infostr);
     }
     else {
         error_handler("Platform reference is NULL.", __FILE__, __func__,
                       __LINE__);
     }
+    return cstr_info;
 }