3 /* datadesc - describing the data to exchange */
5 /* module's private interface masked even to other parts of GRAS. */
7 /* Authors: Olivier Aumage, Martin Quinson */
8 /* Copyright (C) 2003, 2004 the GRAS posse. */
10 /* This program is free software; you can redistribute it and/or modify it
11 under the terms of the license (GNU LGPL) which comes with this package. */
13 #ifndef GRAS_DATADESC_PRIVATE_H
14 #define GRAS_DATADESC_PRIVATE_H
16 #include "gras_private.h"
17 #include "DataDesc/datadesc_interface.h"
22 * Align the data v on the boundary a.
24 #define aligned(v, a) (((v) + (a - 1)) & ~(a - 1))
26 extern gras_set_t *gras_datadesc_set_local;
27 void gras_ddt_freev(void *ddt);
28 /*******************************************
29 * Descriptions of all known architectures *
30 *******************************************/
32 #define gras_arch_count 4
34 gras_ddt_scalar_char = 0,
35 gras_ddt_scalar_short = 1,
36 gras_ddt_scalar_int = 2,
37 gras_ddt_scalar_long = 3,
38 gras_ddt_scalar_long_long = 4,
40 gras_ddt_scalar_pdata = 5,
41 gras_ddt_scalar_pfunc = 6,
43 gras_ddt_scalar_float = 7,
44 gras_ddt_scalar_double = 8
45 } gras_ddt_scalar_type_t;
52 int sizeof_scalars[9]; /* char,short,int,long,long_long,
59 extern const gras_arch_desc_t gras_arches[gras_arch_count];
60 extern const char *gras_datadesc_cat_names[9];
62 /**********************************************************/
63 /* Actual definitions of the stuff in the type descriptor */
64 /**********************************************************/
67 * e_gras_datadesc_type_category:
69 * Defines all possible type categories.
71 typedef enum e_gras_datadesc_type_category {
73 /* if you edit this, also fix gras_datadesc_cat_names in ddt_exchange.c */
75 e_gras_datadesc_type_cat_undefined = 0,
77 e_gras_datadesc_type_cat_scalar = 1,
78 e_gras_datadesc_type_cat_struct = 2,
79 e_gras_datadesc_type_cat_union = 3,
80 e_gras_datadesc_type_cat_ref = 4, /* ref to an uniq element */
81 e_gras_datadesc_type_cat_array = 5,
82 e_gras_datadesc_type_cat_ignored = 6,
84 e_gras_datadesc_type_cat_invalid = 7
85 } gras_datadesc_type_category_t;
87 /*------------------------------------------------*/
88 /* definitions of specific data for each category */
89 /*------------------------------------------------*/
91 * s_gras_dd_cat_field:
93 * Fields of struct and union
95 typedef struct s_gras_dd_cat_field {
98 long int offset[gras_arch_count];
101 gras_datadesc_type_cb_void_t pre;
102 gras_datadesc_type_cb_void_t post;
104 } gras_dd_cat_field_t;
106 void gras_dd_cat_field_free(void *f);
109 * gras_dd_cat_scalar_t:
111 * Specific fields of a scalar
113 enum e_gras_dd_scalar_encoding {
114 e_gras_dd_scalar_encoding_undefined = 0,
116 e_gras_dd_scalar_encoding_uint,
117 e_gras_dd_scalar_encoding_sint,
118 e_gras_dd_scalar_encoding_float,
120 e_gras_dd_scalar_encoding_invalid
122 typedef struct s_gras_dd_cat_scalar {
123 enum e_gras_dd_scalar_encoding encoding;
124 } gras_dd_cat_scalar_t;
127 * gras_dd_cat_struct_t:
129 * Specific fields of a struct
131 typedef struct s_gras_dd_cat_struct {
132 gras_dynar_t *fields; /* elm type = gras_dd_cat_field_t */
133 int closed; /* gras_datadesc_declare_struct_close() was called */
134 } gras_dd_cat_struct_t;
137 * gras_dd_cat_union_t:
139 * Specific fields of a union
141 typedef struct s_gras_dd_cat_union {
142 gras_datadesc_type_cb_int_t selector;
143 gras_dynar_t *fields; /* elm type = gras_dd_cat_field_t */
144 int closed; /* gras_datadesc_declare_union_close() was called */
145 } gras_dd_cat_union_t;
150 * Specific fields of a reference
152 typedef struct s_gras_dd_cat_ref {
155 /* callback used to return the referenced type number */
156 gras_datadesc_type_cb_int_t selector;
161 * gras_dd_cat_array_t:
163 * Specific fields of an array
165 typedef struct s_gras_dd_cat_array {
168 /* element_count < 0 means dynamically defined */
171 /* callback used to return the dynamic length */
172 gras_datadesc_type_cb_int_t dynamic_size;
174 } gras_dd_cat_array_t;
177 * gras_dd_cat_ignored_t:
179 * Specific fields of an ignored field
181 typedef struct s_gras_dd_cat_ignored {
183 void_f_pvoid_t *free_func;
184 } gras_dd_cat_ignored_t;
188 * u_gras_datadesc_category:
190 * Specific data to each possible category
192 union u_gras_datadesc_category {
193 void *undefined_data;
194 gras_dd_cat_scalar_t scalar_data;
195 gras_dd_cat_struct_t struct_data;
196 gras_dd_cat_union_t union_data;
197 gras_dd_cat_ref_t ref_data;
198 gras_dd_cat_array_t array_data;
199 gras_dd_cat_ignored_t ignored_data;
203 /****************************************/
204 /* The holy grail: type descriptor type */
205 /****************************************/
207 * s_gras_datadesc_type:
211 struct s_gras_datadesc_type {
212 /* headers for the data set */
215 unsigned int name_len;
217 unsigned int refcounter;
220 long int size[gras_arch_count];
222 long int alignment[gras_arch_count];
223 long int aligned_size[gras_arch_count];
225 enum e_gras_datadesc_type_category category_code;
226 union u_gras_datadesc_category category;
228 gras_datadesc_type_cb_void_t pre;
229 gras_datadesc_type_cb_void_t post;
232 /***************************
233 * Type creation functions *
234 ***************************/
236 gras_datadesc_declare_scalar(const char *name,
237 gras_ddt_scalar_type_t type,
238 enum e_gras_dd_scalar_encoding encoding,
239 gras_datadesc_type_cb_void_t cb,
240 gras_datadesc_type_t **dst);
242 /****************************************************
243 * Callback persistant state constructor/destructor *
244 ****************************************************/
246 gras_dd_cbps_new(gras_dd_cbps_t **dst);
248 gras_dd_cbps_free(gras_dd_cbps_t **state);
254 gras_dd_convert_elm(gras_datadesc_type_t *type, int count,
256 void *src, void *dst);
258 #endif /* GRAS_DATADESC_PRIVATE_H */