diff options
Diffstat (limited to 'src/H5PL.c')
| -rw-r--r-- | src/H5PL.c | 98 |
1 files changed, 62 insertions, 36 deletions
@@ -43,8 +43,10 @@ /****************************/ /* Windows support */ #ifdef H5_HAVE_WIN32_API + #define H5PL_DEFAULT_PATH ".;/ProgramData;/Users/Public" #define H5PL_PATH_SEPARATOR ";" + /* Handle for dynamic library */ #define H5PL_HANDLE HINSTANCE @@ -60,25 +62,14 @@ /* Clear error - nothing to do */ #define H5PL_CLR_ERROR -#define H5PL_GET_PLUGIN_TYPE(H, ret_val) { \ -typedef const int (__cdecl *get_plugin_type_t)(); \ -get_plugin_type_t get_plugin_type; \ -get_plugin_type = (get_plugin_type_t)H5PL_GET_LIB_FUNC(H, "H5PL_get_plugin_type"); \ -ret_val = get_plugin_type(); \ -} - -#define H5PL_GET_PLUGIN_INFO(H, ret_val) { \ -typedef const H5Z_class2_t *(__cdecl *get_filter_info_t)(); \ -get_filter_info_t get_filter_info; \ -get_filter_info = (get_filter_info_t)H5PL_GET_LIB_FUNC(H, "H5PL_get_plugin_info"); \ -ret_val = get_filter_info(); \ -} - typedef const H5Z_class2_t *(__cdecl *get_filter_info_t)(); +/* Unix support */ #else /* H5_HAVE_WIN32_API */ + #define H5PL_DEFAULT_PATH "/usr:/usr/lib:/usr/local" #define H5PL_PATH_SEPARATOR ":" + /* Handle for dynamic library */ #define H5PL_HANDLE void * @@ -94,23 +85,11 @@ typedef const H5Z_class2_t *(__cdecl *get_filter_info_t)(); /* Clear error */ #define H5PL_CLR_ERROR dlerror() -#define H5PL_GET_PLUGIN_TYPE(H, ret_val) { \ -typedef const int (*get_plugin_type_t)(); \ -get_plugin_type_t get_plugin_type; \ -get_plugin_type = (get_plugin_type_t)H5PL_GET_LIBRARY_FUNCTION(H, "H5PL_get_plugin_type"); \ -ret_val = (*get_plugin_type)(); \ -} - -#define H5PL_GET_PLUGIN_INFO(H, ret_val) { \ -typedef const H5Z_class2_t *(*get_filter_info_t)(); \ -get_filter_info_t get_filter_info; \ -*(void**)(&get_filter_info) = (get_filter_info_t)H5PL_GET_LIB_FUNC(H, "H5PL_get_plugin_info"); \ -ret_val = get_filter_info(); \ -} - typedef const H5Z_class2_t *(*get_filter_info_t)(); #endif /* H5_HAVE_WIN32_API */ +/* Special symbol to indicate no plugin loading */ +#define H5PL_NO_PLUGIN "::" /******************/ /* Local Typedefs */ @@ -159,6 +138,10 @@ static char *H5PL_path_table_g[H5PL_MAX_PATH_NUM]; static size_t H5PL_num_paths_g = 0; static htri_t H5PL_path_found_g = FALSE; +/* Table of preload pathnames for plugin libraries */ +static char *H5PL_preload_table_g[H5PL_MAX_PATH_NUM]; +static size_t H5PL_num_preload_g = 0; +static hbool_t H5PL_no_plugin_g = FALSE; /*-------------------------------------------------------------------------- @@ -175,13 +158,56 @@ DESCRIPTION static herr_t H5PL__init_interface(void) { - FUNC_ENTER_STATIC_NOERR + char *preload_path = NULL; + herr_t ret_value = SUCCEED; /* Return value */ - FUNC_LEAVE_NOAPI(SUCCEED) + FUNC_ENTER_STATIC + + /* Retrieve pathnames from HDF5_PLUGIN_PRELOAD if the user sets it + * to tell the library to load plugin libraries without search. + */ + if(!(preload_path = HDgetenv("HDF5_PLUGIN_PRELOAD"))) + HGOTO_DONE(ret_value) + + /* Special symbal "::" means no plugin during data reading. */ + if(!HDstrcmp(preload_path, H5PL_NO_PLUGIN)) { + H5PL_no_plugin_g = TRUE; + HGOTO_DONE(ret_value) + } + +done: + FUNC_LEAVE_NOAPI(ret_value) } /* end H5PL__init_interface() */ /*------------------------------------------------------------------------- + * Function: H5PL_no_plugin + * + * Purpose: Quick way for filter module to query whether to load plugin + * + * Return: TRUE: No plugin loading during data reading + * + * FALSE: Load plugin during data reading + * + * Programmer: Raymond Lu + * 20 February 2013 + * + *------------------------------------------------------------------------- + */ +hbool_t H5PL_no_plugin(void) +{ + hbool_t ret_value = FALSE; + + FUNC_ENTER_NOAPI(ret_value) + + ret_value = H5PL_no_plugin_g; + +done: + FUNC_LEAVE_NOAPI(ret_value) +} + + +/*------------------------------------------------------------------------- * Function: H5PL_term_interface * * Purpose: Terminate the H5PL interface: release all memory, reset all @@ -496,7 +522,7 @@ static htri_t H5PL__open(H5PL_type_t pl_type, char *libname, int pl_id, void **pl_info) { H5PL_HANDLE handle = NULL; - get_filter_info_t H5PL_get_plugin_info = NULL; + get_filter_info_t get_plugin_info = NULL; htri_t ret_value = FALSE; FUNC_ENTER_STATIC @@ -511,7 +537,7 @@ H5PL__open(H5PL_type_t pl_type, char *libname, int pl_id, void **pl_info) /* Return a handle for the function H5PL_get_plugin_info in the dynamic library. * The plugin library is suppose to define this function. */ - if(NULL == (H5PL_get_plugin_info = (get_filter_info_t)H5PL_GET_LIB_FUNC(handle, "H5PL_get_plugin_info"))) { + if(NULL == (get_plugin_info = (get_filter_info_t)H5PL_GET_LIB_FUNC(handle, "H5PL_get_plugin_info"))) { if(H5PL__close(handle) < 0) HGOTO_ERROR(H5E_PLUGIN, H5E_CLOSEERROR, FAIL, "can't close dynamic library") } /* end if */ @@ -521,7 +547,7 @@ H5PL__open(H5PL_type_t pl_type, char *libname, int pl_id, void **pl_info) /* Invoke H5PL_get_plugin_info to verify this is the right library we are looking for. * Move on if it isn't. */ - if(NULL == (plugin_info = (*H5PL_get_plugin_info)())) { + if(NULL == (plugin_info = (*get_plugin_info)())) { if(H5PL__close(handle) < 0) HGOTO_ERROR(H5E_PLUGIN, H5E_CLOSEERROR, FAIL, "can't close dynamic library") HGOTO_ERROR(H5E_PLUGIN, H5E_CANTGET, FAIL, "can't get plugin info") @@ -583,7 +609,7 @@ H5PL__search_table(H5PL_type_t plugin_type, int type_id, void **info) { size_t i; H5Z_class2_t *plugin_info; - get_filter_info_t H5PL_get_plugin_info = NULL; + get_filter_info_t get_plugin_info = NULL; htri_t ret_value = FALSE; FUNC_ENTER_STATIC @@ -592,10 +618,10 @@ H5PL__search_table(H5PL_type_t plugin_type, int type_id, void **info) if(H5PL_table_used_g > 0) { for(i = 0; i < H5PL_table_used_g; i++) { if((plugin_type == (H5PL_table_g[i]).pl_type) && (type_id == (H5PL_table_g[i]).pl_id)) { - if(NULL == (H5PL_get_plugin_info = (get_filter_info_t)H5PL_GET_LIB_FUNC((H5PL_table_g[i]).handle, "H5PL_get_plugin_info"))) + if(NULL == (get_plugin_info = (get_filter_info_t)H5PL_GET_LIB_FUNC((H5PL_table_g[i]).handle, "H5PL_get_plugin_info"))) HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get function for H5PL_get_plugin_info") - if(NULL == (plugin_info = (*H5PL_get_plugin_info)())) + if(NULL == (plugin_info = (*get_plugin_info)())) HGOTO_ERROR(H5E_DATATYPE, H5E_CANTGET, FAIL, "can't get plugin info") *info = (void *)plugin_info; |