include/babeltrace/trace-ir/field-internal.h

   1 #ifndef BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H
   2 #define BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H
   3
   4 /*
   5  * Copyright 2017-2018 Philippe Proulx <pproulx@efficios.com>
   6  * Copyright 2013, 2014 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a copy
   9  * of this software and associated documentation files (the "Software"), to deal
  10  * in the Software without restriction, including without limitation the rights
  11  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12  * copies of the Software, and to permit persons to whom the Software is
  13  * furnished to do so, subject to the following conditions:
  14  *
  15  * The above copyright notice and this permission notice shall be included in
  16  * all copies or substantial portions of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  24  * SOFTWARE.
  25  */
  26
  27 #include <babeltrace/assert-pre-internal.h>
  28 #include <babeltrace/common-internal.h>
  29 #include <babeltrace/trace-ir/field-class-internal.h>
  30 #include <babeltrace/trace-ir/utils-internal.h>
  31 #include <babeltrace/object-internal.h>
  32 #include <babeltrace/babeltrace-internal.h>
  33 #include <babeltrace/types.h>
  34 #include <stdint.h>
  35 #include <string.h>
  36 #include <inttypes.h>
  37 #include <stdbool.h>
  38 #include <glib.h>
  39
  40 #define BT_ASSERT_PRE_FIELD_HAS_CLASS_TYPE(_field, _cls_type, _name)    \
  41         BT_ASSERT_PRE(((const struct bt_field *) (_field))->class->type == (_cls_type), \
  42                 _name " has the wrong class type: expected-class-type=%s, " \
  43                 "%![field-]+f",                                         \
  44                 bt_common_field_class_type_string(_cls_type), (_field))
  45
  46 #define BT_ASSERT_PRE_FIELD_IS_UNSIGNED_INT(_field, _name)              \
  47         BT_ASSERT_PRE(                                                  \
  48                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_UNSIGNED_INTEGER || \
  49                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_UNSIGNED_ENUMERATION, \
  50                 _name " is not an unsigned integer field: %![field-]+f", \
  51                 (_field))
  52
  53 #define BT_ASSERT_PRE_FIELD_IS_SIGNED_INT(_field, _name)                \
  54         BT_ASSERT_PRE(                                                  \
  55                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_SIGNED_INTEGER || \
  56                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_SIGNED_ENUMERATION, \
  57                 _name " is not a signed integer field: %![field-]+f", \
  58                 (_field))
  59
  60 #define BT_ASSERT_PRE_FIELD_IS_ARRAY(_field, _name)                     \
  61         BT_ASSERT_PRE(                                                  \
  62                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_STATIC_ARRAY || \
  63                 ((const struct bt_field *) (_field))->class->type == BT_FIELD_CLASS_TYPE_DYNAMIC_ARRAY, \
  64                 _name " is not an array field: %![field-]+f", (_field))
  65
  66 #define BT_ASSERT_PRE_FIELD_IS_SET(_field, _name)                       \
  67         BT_ASSERT_PRE(bt_field_is_set(_field),                          \
  68                 _name " is not set: %!+f", (_field))
  69
  70 #define BT_ASSERT_PRE_FIELD_HOT(_field, _name)                          \
  71         BT_ASSERT_PRE_HOT((const struct bt_field *) (_field), (_name),  \
  72                 ": %!+f", (_field))
  73
  74 struct bt_field;
  75
  76 typedef struct bt_field *(* bt_field_create_func)(struct bt_field_class *);
  77 typedef void (*bt_field_method_set_is_frozen)(struct bt_field *, bool);
  78 typedef bool (*bt_field_method_is_set)(const struct bt_field *);
  79 typedef void (*bt_field_method_reset)(struct bt_field *);
  80
  81 struct bt_field_methods {
  82         bt_field_method_set_is_frozen set_is_frozen;
  83         bt_field_method_is_set is_set;
  84         bt_field_method_reset reset;
  85 };
  86
  87 struct bt_field {
  88         struct bt_object base;
  89
  90         /* Owned by this */
  91         struct bt_field_class *class;
  92
  93         /* Virtual table for slow path (dev mode) operations */
  94         struct bt_field_methods *methods;
  95
  96         bool is_set;
  97         bool frozen;
  98 };
  99
 100 struct bt_field_integer {
 101         struct bt_field common;
 102
 103         union {
 104                 uint64_t u;
 105                 int64_t i;
 106         } value;
 107 };
 108
 109 struct bt_field_real {
 110         struct bt_field common;
 111         double value;
 112 };
 113
 114 struct bt_field_structure {
 115         struct bt_field common;
 116
 117         /* Array of `struct bt_field *`, owned by this */
 118         GPtrArray *fields;
 119 };
 120
 121 struct bt_field_variant {
 122         struct bt_field common;
 123
 124         /* Weak: belongs to `fields` below */
 125         struct bt_field *selected_field;
 126
 127         /* Index of currently selected field */
 128         uint64_t selected_index;
 129
 130         /* Array of `struct bt_field *`, owned by this */
 131         GPtrArray *fields;
 132 };
 133
 134 struct bt_field_array {
 135         struct bt_field common;
 136
 137         /* Array of `struct bt_field *`, owned by this */
 138         GPtrArray *fields;
 139
 140         /* Current effective length */
 141         uint64_t length;
 142 };
 143
 144 struct bt_field_string {
 145         struct bt_field common;
 146         GArray *buf;
 147         uint64_t length;
 148 };
 149
 150 #ifdef BT_DEV_MODE
 151 # define bt_field_set_is_frozen         _bt_field_set_is_frozen
 152 # define bt_field_is_set                _bt_field_is_set
 153 # define bt_field_reset                 _bt_field_reset
 154 # define bt_field_set_single            _bt_field_set_single
 155 #else
 156 # define bt_field_set_is_frozen(_field, _is_frozen)
 157 # define bt_field_is_set(_field)        (BT_FALSE)
 158 # define bt_field_reset(_field)
 159 # define bt_field_set_single(_field, _val)
 160 #endif
 161
 162 BT_HIDDEN
 163 void _bt_field_set_is_frozen(const struct bt_field *field, bool is_frozen);
 164
 165 static inline
 166 void _bt_field_reset(const struct bt_field *field)
 167 {
 168         BT_ASSERT(field);
 169         BT_ASSERT(field->methods->reset);
 170         field->methods->reset((void *) field);
 171 }
 172
 173 static inline
 174 void _bt_field_set_single(struct bt_field *field, bool value)
 175 {
 176         BT_ASSERT(field);
 177         field->is_set = value;
 178 }
 179
 180 static inline
 181 bt_bool _bt_field_is_set(const struct bt_field *field)
 182 {
 183         bt_bool is_set = BT_FALSE;
 184
 185         if (!field) {
 186                 goto end;
 187         }
 188
 189         BT_ASSERT(bt_field_class_has_known_type(field->class));
 190         BT_ASSERT(field->methods->is_set);
 191         is_set = field->methods->is_set(field);
 192
 193 end:
 194         return is_set;
 195 }
 196
 197 BT_HIDDEN
 198 struct bt_field *bt_field_create(struct bt_field_class *class);
 199
 200 BT_HIDDEN
 201 void bt_field_destroy(struct bt_field *field);
 202
 203 #endif /* BABELTRACE_TRACE_IR_FIELDS_INTERNAL_H */