1 files changed, 68 insertions, 3 deletions
diff --git a/src/H5PLpkg.h b/src/H5PLpkg.h
index dae4c59..6ab0aa9 100644
--- a/src/H5PLpkg.h
+++ b/src/H5PLpkg.h
@@ -26,6 +26,69 @@
 #define   MAX_PATH_NUM              16
 
 /****************************/
+/* Macros for supporting 
+ * both Windows and Unix */
+/****************************/
+
+/* Handle for dynamic library */
+#ifdef H5_HAVE_WIN32_API
+/* Handle for dynamic library */
+#define H5PL_HANDLE HINSTANCE
+
+/* Get a handle to a plugin library.  Windows: TEXT macro handles Unicode strings */
+#define H5PL_OPEN_DLIB(S) LoadLibraryEx(TEXT(S), NULL, LOAD_WITH_ALTERED_SEARCH_PATH)
+
+/* Get the address of a symbol in dynamic library */
+#define H5PL_GET_LIB_FUNC(H,N) GetProcAddress(H,N)
+
+/* Close dynamic library */
+#define H5PL_CLOSE_LIB(H) FreeLibrary(H)
+
+/* Declare error string */
+#define H5PL_ERROR DWORD dw; char *error
+
+/* Clear error - nothing to do */
+#define H5PLG_CLR_ERROR
+
+/* Print error message */
+#define H5PL_CHECK_ERR(R) { \
+    if(R==NULL) { \
+        dw = GetLastError(); \
+        sprintf(error, "%ld", dw); \
+    } \
+    else error = NULL; \
+}
+
+#else
+/* Handle for dynamic library */
+#define H5PL_HANDLE void *
+
+/* Get a handle to a plugin library.  Windows: TEXT macro handles Unicode strings */
+#define H5PL_OPEN_DLIB(S) dlopen(S, RTLD_NOW|RTLD_LAZY)
+
+/* Get the address of a symbol in dynamic library */
+#define H5PL_GET_LIB_FUNC(H,N) dlsym(H,N)
+
+/* Close dynamic library */
+#define H5PL_CLOSE_LIB(H) dlclose(H)
+
+/* Declare error string */
+#define H5PL_ERROR char *error
+
+/* Clear error */
+#define H5PL_CLR_ERR dlerror()
+
+/* Print error message */
+#define H5PL_CHECK_ERR(R) { \
+    if(R==NULL) { \
+        error = dlerror(); \
+    } \
+    else error = NULL; \
+}
+
+#endif
+
+/****************************/
 /* Local typedefs */
 /****************************/
 
@@ -33,7 +96,7 @@
 typedef struct H5PL_table_t {
     H5PL_type_t pl_type;			/* plugin type	     */
     int         pl_id;                          /* ID for the plugin */
-    void        *handle;			/* plugin handle     */
+    H5PL_HANDLE handle;			/* plugin handle     */
 } H5PL_table_t;
 
 /****************************/
@@ -55,8 +118,10 @@ static htri_t           path_found = FALSE;
 /******************************/
 
 /* Function prototypes for H5PL package scope */
-htri_t H5PL_find(H5PL_type_t plugin_type, int type_id, char *dir, void **info);
-htri_t H5PL_search_table(H5PL_type_t plugin_type, int type_id, void **info);
+H5_DLL htri_t H5PL_find(H5PL_type_t plugin_type, int type_id, char *dir, void **info);
+H5_DLL htri_t H5PL_open(H5PL_type_t pl_type, char *libname, int plugin_id, void **pl_info);
+H5_DLL htri_t H5PL_search_table(H5PL_type_t plugin_type, int type_id, void **info);
+H5_DLL herr_t H5PL_close(H5PL_HANDLE handle);
 
 #endif /* _H5PLpkg_H */