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/*
* float.c
*
* BabelTrace - Float Type Converter
*
* Copyright 2010-2011 EfficiOS Inc. and Linux Foundation
*
* Author: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <babeltrace/compiler.h>
#include <babeltrace/format.h>
#include <babeltrace/types.h>
#include <babeltrace/endian.h>
static
struct bt_definition *_float_definition_new(struct bt_declaration *declaration,
struct definition_scope *parent_scope,
GQuark field_name, int index,
const char *root_name);
static
void _float_definition_free(struct bt_definition *definition);
static
void _float_declaration_free(struct bt_declaration *declaration)
{
struct declaration_float *float_declaration =
container_of(declaration, struct declaration_float, p);
bt_declaration_unref(&float_declaration->exp->p);
bt_declaration_unref(&float_declaration->mantissa->p);
bt_declaration_unref(&float_declaration->sign->p);
g_free(float_declaration);
}
struct declaration_float *
bt_float_declaration_new(size_t mantissa_len,
size_t exp_len, int byte_order, size_t alignment)
{
struct declaration_float *float_declaration;
struct bt_declaration *declaration;
float_declaration = g_new(struct declaration_float, 1);
declaration = &float_declaration->p;
declaration->id = CTF_TYPE_FLOAT;
declaration->alignment = alignment;
declaration->declaration_free = _float_declaration_free;
declaration->definition_new = _float_definition_new;
declaration->definition_free = _float_definition_free;
declaration->ref = 1;
float_declaration->byte_order = byte_order;
float_declaration->sign = bt_integer_declaration_new(1,
byte_order, false, 1, 2,
CTF_STRING_NONE, NULL);
float_declaration->mantissa = bt_integer_declaration_new(mantissa_len - 1,
byte_order, false, 1, 10,
CTF_STRING_NONE, NULL);
float_declaration->exp = bt_integer_declaration_new(exp_len,
byte_order, true, 1, 10,
CTF_STRING_NONE, NULL);
return float_declaration;
}
static
struct bt_definition *
_float_definition_new(struct bt_declaration *declaration,
struct definition_scope *parent_scope,
GQuark field_name, int index,
const char *root_name)
{
struct declaration_float *float_declaration =
container_of(declaration, struct declaration_float, p);
struct definition_float *_float;
struct bt_definition *tmp;
_float = g_new(struct definition_float, 1);
bt_declaration_ref(&float_declaration->p);
_float->p.declaration = declaration;
_float->declaration = float_declaration;
_float->p.scope = bt_new_definition_scope(parent_scope, field_name, root_name);
_float->p.path = bt_new_definition_path(parent_scope, field_name, root_name);
if (float_declaration->byte_order == LITTLE_ENDIAN) {
tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p,
_float->p.scope, g_quark_from_static_string("mantissa"), 0, NULL);
_float->mantissa = container_of(tmp, struct definition_integer, p);
tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p,
_float->p.scope, g_quark_from_static_string("exp"), 1, NULL);
_float->exp = container_of(tmp, struct definition_integer, p);
tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p,
_float->p.scope, g_quark_from_static_string("sign"), 2, NULL);
_float->sign = container_of(tmp, struct definition_integer, p);
} else {
tmp = float_declaration->sign->p.definition_new(&float_declaration->sign->p,
_float->p.scope, g_quark_from_static_string("sign"), 0, NULL);
_float->sign = container_of(tmp, struct definition_integer, p);
tmp = float_declaration->exp->p.definition_new(&float_declaration->exp->p,
_float->p.scope, g_quark_from_static_string("exp"), 1, NULL);
_float->exp = container_of(tmp, struct definition_integer, p);
tmp = float_declaration->mantissa->p.definition_new(&float_declaration->mantissa->p,
_float->p.scope, g_quark_from_static_string("mantissa"), 2, NULL);
_float->mantissa = container_of(tmp, struct definition_integer, p);
}
_float->p.ref = 1;
/*
* Use INT_MAX order to ensure that all fields of the parent
* scope are seen as being prior to this scope.
*/
_float->p.index = root_name ? INT_MAX : index;
_float->p.name = field_name;
_float->value = 0.0;
if (parent_scope) {
int ret;
ret = bt_register_field_definition(field_name, &_float->p,
parent_scope);
assert(!ret);
}
return &_float->p;
}
static
void _float_definition_free(struct bt_definition *definition)
{
struct definition_float *_float =
container_of(definition, struct definition_float, p);
bt_definition_unref(&_float->sign->p);
bt_definition_unref(&_float->exp->p);
bt_definition_unref(&_float->mantissa->p);
bt_free_definition_scope(_float->p.scope);
bt_declaration_unref(_float->p.declaration);
g_free(_float);
}
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