+++ /dev/null
-/*
- * event-field-value.c
- *
- * Linux Trace Toolkit Control Library
- *
- * Copyright (C) 2020 Philippe Proulx <pproulx@efficios.com>
- *
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- */
-
-#define _LGPL_SOURCE
-#include <stddef.h>
-#include <stdbool.h>
-
-#include <common/error.h>
-#include <common/macros.h>
-#include <lttng/event-field-value-internal.h>
-
-static
-struct lttng_event_field_value *create_empty_field_val(
- enum lttng_event_field_value_type type, size_t size)
-{
- struct lttng_event_field_value *field_val;
-
- field_val = zmalloc(size);
- if (!field_val) {
- goto end;
- }
-
- field_val->type = type;
-
-end:
- return field_val;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_uint_create(
- uint64_t val)
-{
- struct lttng_event_field_value_uint *field_val;
-
- field_val = container_of(create_empty_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_INT,
- sizeof(*field_val)),
- struct lttng_event_field_value_uint, parent);
- if (!field_val) {
- goto error;
- }
-
- field_val->val = val;
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return &field_val->parent;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_int_create(
- int64_t val)
-{
- struct lttng_event_field_value_int *field_val;
-
- field_val = container_of(create_empty_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_INT,
- sizeof(*field_val)),
- struct lttng_event_field_value_int, parent);
- if (!field_val) {
- goto error;
- }
-
- field_val->val = val;
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return &field_val->parent;
-}
-
-static
-struct lttng_event_field_value_enum *create_enum_field_val(
- enum lttng_event_field_value_type type, size_t size)
-{
- struct lttng_event_field_value_enum *field_val;
-
- field_val = container_of(create_empty_field_val(type, size),
- struct lttng_event_field_value_enum, parent);
- if (!field_val) {
- goto error;
- }
-
- lttng_dynamic_pointer_array_init(&field_val->labels, free);
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return field_val;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_enum_uint_create(
- uint64_t val)
-{
- struct lttng_event_field_value_enum_uint *field_val;
-
- field_val = container_of(create_enum_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM,
- sizeof(*field_val)),
- struct lttng_event_field_value_enum_uint, parent);
- if (!field_val) {
- goto error;
- }
-
- field_val->val = val;
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent.parent);
-
-end:
- return &field_val->parent.parent;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_enum_int_create(
- int64_t val)
-{
- struct lttng_event_field_value_enum_int *field_val;
-
- field_val = container_of(create_enum_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM,
- sizeof(*field_val)),
- struct lttng_event_field_value_enum_int, parent);
- if (!field_val) {
- goto error;
- }
-
- field_val->val = val;
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent.parent);
-
-end:
- return &field_val->parent.parent;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_real_create(double val)
-{
- struct lttng_event_field_value_real *field_val = container_of(
- create_empty_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_REAL,
- sizeof(*field_val)),
- struct lttng_event_field_value_real, parent);
-
- if (!field_val) {
- goto error;
- }
-
- field_val->val = val;
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return &field_val->parent;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_string_create_with_size(
- const char *val, size_t size)
-{
- struct lttng_event_field_value_string *field_val = container_of(
- create_empty_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_STRING,
- sizeof(*field_val)),
- struct lttng_event_field_value_string, parent);
-
- if (!field_val) {
- goto error;
- }
-
- LTTNG_ASSERT(val);
- field_val->val = strndup(val, size);
- if (!field_val->val) {
- goto error;
- }
-
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return &field_val->parent;
-}
-
-struct lttng_event_field_value *lttng_event_field_value_string_create(
- const char *val)
-{
- LTTNG_ASSERT(val);
- return lttng_event_field_value_string_create_with_size(val,
- strlen(val));
-}
-
-static
-void destroy_field_val(void *field_val)
-{
- lttng_event_field_value_destroy(field_val);
-}
-
-struct lttng_event_field_value *lttng_event_field_value_array_create(void)
-{
- struct lttng_event_field_value_array *field_val = container_of(
- create_empty_field_val(
- LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY,
- sizeof(*field_val)),
- struct lttng_event_field_value_array, parent);
-
- if (!field_val) {
- goto error;
- }
-
- lttng_dynamic_pointer_array_init(&field_val->elems, destroy_field_val);
- goto end;
-
-error:
- lttng_event_field_value_destroy(&field_val->parent);
-
-end:
- return &field_val->parent;
-}
-
-void lttng_event_field_value_destroy(struct lttng_event_field_value *field_val)
-{
- if (!field_val) {
- goto end;
- }
-
- switch (field_val->type) {
- case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM:
- case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM:
- {
- struct lttng_event_field_value_enum *enum_field_val =
- container_of(field_val,
- struct lttng_event_field_value_enum, parent);
-
- lttng_dynamic_pointer_array_reset(&enum_field_val->labels);
- break;
- }
- case LTTNG_EVENT_FIELD_VALUE_TYPE_STRING:
- {
- struct lttng_event_field_value_string *str_field_val =
- container_of(field_val,
- struct lttng_event_field_value_string, parent);
-
- free(str_field_val->val);
- break;
- }
- case LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY:
- {
- struct lttng_event_field_value_array *array_field_expr =
- container_of(field_val,
- struct lttng_event_field_value_array,
- parent);
-
- lttng_dynamic_pointer_array_reset(&array_field_expr->elems);
- break;
- }
- default:
- break;
- }
-
- free(field_val);
-
-end:
- return;
-}
-
-int lttng_event_field_value_enum_append_label_with_size(
- struct lttng_event_field_value *field_val,
- const char *label, size_t size)
-{
- int ret;
- char *new_label;
-
- LTTNG_ASSERT(field_val);
- LTTNG_ASSERT(label);
- new_label = strndup(label, size);
- if (!new_label) {
- ret = -1;
- goto end;
- }
-
- ret = lttng_dynamic_pointer_array_add_pointer(
- &container_of(field_val,
- struct lttng_event_field_value_enum, parent)->labels,
- new_label);
- if (ret == 0) {
- new_label = NULL;
- }
-
-end:
- free(new_label);
- return ret;
-}
-
-int lttng_event_field_value_enum_append_label(
- struct lttng_event_field_value *field_val,
- const char *label)
-{
- LTTNG_ASSERT(label);
- return lttng_event_field_value_enum_append_label_with_size(field_val,
- label, strlen(label));
-}
-
-int lttng_event_field_value_array_append(
- struct lttng_event_field_value *array_field_val,
- struct lttng_event_field_value *field_val)
-{
- LTTNG_ASSERT(array_field_val);
- LTTNG_ASSERT(field_val);
- return lttng_dynamic_pointer_array_add_pointer(
- &container_of(array_field_val,
- struct lttng_event_field_value_array, parent)->elems,
- field_val);
-}
-
-int lttng_event_field_value_array_append_unavailable(
- struct lttng_event_field_value *array_field_val)
-{
- LTTNG_ASSERT(array_field_val);
- return lttng_dynamic_pointer_array_add_pointer(
- &container_of(array_field_val,
- struct lttng_event_field_value_array, parent)->elems,
- NULL);
-}
-
-enum lttng_event_field_value_type lttng_event_field_value_get_type(
- const struct lttng_event_field_value *field_val)
-{
- enum lttng_event_field_value_type type;
-
- if (!field_val) {
- type = LTTNG_EVENT_FIELD_VALUE_TYPE_INVALID;
- goto end;
- }
-
- type = field_val->type;
-
-end:
- return type;
-}
-
-enum lttng_event_field_value_status
-lttng_event_field_value_unsigned_int_get_value(
- const struct lttng_event_field_value *field_val, uint64_t *val)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || !val) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- switch (field_val->type) {
- case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_INT:
- *val = container_of(field_val,
- const struct lttng_event_field_value_uint,
- parent)->val;
- break;
- case LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM:
- {
- const struct lttng_event_field_value_enum *field_val_enum = container_of(
- field_val,
- const struct lttng_event_field_value_enum,
- parent);
- const struct lttng_event_field_value_enum_uint
- *field_val_enum_uint = container_of(
- field_val_enum,
- const struct lttng_event_field_value_enum_uint,
- parent);
- *val = field_val_enum_uint->val;
- break;
- }
- default:
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-enum lttng_event_field_value_status
-lttng_event_field_value_signed_int_get_value(
- const struct lttng_event_field_value *field_val, int64_t *val)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || !val) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- switch (field_val->type) {
- case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_INT:
- *val = container_of(field_val,
- const struct lttng_event_field_value_int,
- parent)->val;
- break;
- case LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM:
- {
- const struct lttng_event_field_value_enum *field_val_enum = container_of(
- field_val,
- const struct lttng_event_field_value_enum,
- parent);
- const struct lttng_event_field_value_enum_int
- *field_val_enum_uint = container_of(
- field_val_enum,
- const struct lttng_event_field_value_enum_int,
- parent);
- *val = field_val_enum_uint->val;
- break;
- }
- default:
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-enum lttng_event_field_value_status
-lttng_event_field_value_real_get_value(
- const struct lttng_event_field_value *field_val, double *val)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_REAL ||
- !val) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- *val = container_of(field_val,
- const struct lttng_event_field_value_real, parent)->val;
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-static
-bool is_enum_field_val(const struct lttng_event_field_value *field_val)
-{
- return field_val->type == LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM ||
- field_val->type == LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM;
-}
-
-enum lttng_event_field_value_status
-lttng_event_field_value_enum_get_label_count(
- const struct lttng_event_field_value *field_val,
- unsigned int *count)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || !is_enum_field_val(field_val) || !count) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- *count = (unsigned int) lttng_dynamic_pointer_array_get_count(
- &container_of(field_val,
- const struct lttng_event_field_value_enum,
- parent)->labels);
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-const char *lttng_event_field_value_enum_get_label_at_index(
- const struct lttng_event_field_value *field_val,
- unsigned int index)
-{
- const char *ret;
- const struct lttng_event_field_value_enum *enum_field_val;
-
- if (!field_val || !is_enum_field_val(field_val)) {
- ret = NULL;
- goto end;
- }
-
- enum_field_val = container_of(field_val,
- const struct lttng_event_field_value_enum, parent);
-
- if (index >= lttng_dynamic_pointer_array_get_count(&enum_field_val->labels)) {
- ret = NULL;
- goto end;
- }
-
- ret = lttng_dynamic_pointer_array_get_pointer(&enum_field_val->labels,
- index);
-
-end:
- return ret;
-}
-
-enum lttng_event_field_value_status lttng_event_field_value_string_get_value(
- const struct lttng_event_field_value *field_val,
- const char **value)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_STRING) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- *value = container_of(field_val,
- const struct lttng_event_field_value_string, parent)->val;
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-enum lttng_event_field_value_status lttng_event_field_value_array_get_length(
- const struct lttng_event_field_value *field_val,
- unsigned int *length)
-{
- enum lttng_event_field_value_status status;
-
- if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY ||
- !length) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- *length = (unsigned int) lttng_dynamic_pointer_array_get_count(
- &container_of(field_val,
- const struct lttng_event_field_value_array,
- parent)->elems);
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
-
-end:
- return status;
-}
-
-enum lttng_event_field_value_status
-lttng_event_field_value_array_get_element_at_index(
- const struct lttng_event_field_value *field_val,
- unsigned int index,
- const struct lttng_event_field_value **elem_field_val)
-{
- enum lttng_event_field_value_status status;
- const struct lttng_event_field_value_array *array_field_val;
-
- if (!field_val || field_val->type != LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY ||
- !elem_field_val) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- array_field_val = container_of(field_val,
- const struct lttng_event_field_value_array, parent);
-
- if (index >= lttng_dynamic_pointer_array_get_count(&array_field_val->elems)) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID;
- goto end;
- }
-
- *elem_field_val = lttng_dynamic_pointer_array_get_pointer(
- &array_field_val->elems, index);
- if (*elem_field_val) {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_OK;
- } else {
- status = LTTNG_EVENT_FIELD_VALUE_STATUS_UNAVAILABLE;
- }
-
-end:
- return status;
-}
projects / lttng-tools.git / blobdiff