X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=src%2Flib%2Flttng-ctl%2Fevent-expr.c;fp=src%2Flib%2Flttng-ctl%2Fevent-expr.c;h=0000000000000000000000000000000000000000;hp=126f0ca34bb2246ad29d4cf400c2e4bb547d959e;hb=6cacd9175901ed12659d1e042343da3321b004d5;hpb=2b1664007528accb47d09633a5198b668358c722 diff --git a/src/lib/lttng-ctl/event-expr.c b/src/lib/lttng-ctl/event-expr.c deleted file mode 100644 index 126f0ca34..000000000 --- a/src/lib/lttng-ctl/event-expr.c +++ /dev/null @@ -1,444 +0,0 @@ -/* - * event-expr.c - * - * Linux Trace Toolkit Control Library - * - * Copyright (C) 2020 Philippe Proulx - * - * SPDX-License-Identifier: LGPL-2.1-only - * - */ - -#define _LGPL_SOURCE -#include -#include - -#include -#include -#include - -enum lttng_event_expr_type lttng_event_expr_get_type( - const struct lttng_event_expr *expr) -{ - enum lttng_event_expr_type type; - - if (!expr) { - type = LTTNG_EVENT_EXPR_TYPE_INVALID; - goto end; - } - - type = expr->type; - -end: - return type; -} - -static -struct lttng_event_expr *create_empty_expr(enum lttng_event_expr_type type, - size_t size) -{ - struct lttng_event_expr *expr; - - expr = zmalloc(size); - if (!expr) { - goto end; - } - - expr->type = type; - -end: - return expr; -} - -static -struct lttng_event_expr_field *create_field_event_expr( - enum lttng_event_expr_type type, - const char *name) -{ - struct lttng_event_expr_field *expr = - container_of( - create_empty_expr(type, sizeof(*expr)), - struct lttng_event_expr_field, parent); - - if (!expr) { - goto error; - } - - assert(name); - expr->name = strdup(name); - if (!expr->name) { - goto error; - } - - goto end; - -error: - if (expr) { - lttng_event_expr_destroy(&expr->parent); - } - expr = NULL; - -end: - return expr; -} - -struct lttng_event_expr *lttng_event_expr_event_payload_field_create( - const char *field_name) -{ - struct lttng_event_expr *expr = NULL; - - if (!field_name) { - goto end; - } - - expr = &create_field_event_expr( - LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD, - field_name)->parent; - -end: - return expr; -} - -struct lttng_event_expr *lttng_event_expr_channel_context_field_create( - const char *field_name) -{ - struct lttng_event_expr *expr = NULL; - - if (!field_name) { - goto end; - } - - expr = &create_field_event_expr( - LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD, - field_name)->parent; - -end: - return expr; -} - -struct lttng_event_expr *lttng_event_expr_app_specific_context_field_create( - const char *provider_name, const char *type_name) -{ - struct lttng_event_expr_app_specific_context_field *expr = NULL; - struct lttng_event_expr *ret_parent_expr; - - if (!type_name || !provider_name) { - goto error; - } - - expr = container_of(create_empty_expr( - LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD, - sizeof(*expr)), - struct lttng_event_expr_app_specific_context_field, - parent); - if (!expr) { - goto error; - } - - expr->provider_name = strdup(provider_name); - if (!expr->provider_name) { - goto error; - } - - expr->type_name = strdup(type_name); - if (!expr->type_name) { - goto error; - } - - ret_parent_expr = &expr->parent; - goto end; - -error: - if (expr) { - lttng_event_expr_destroy(&expr->parent); - } - ret_parent_expr = NULL; - -end: - return ret_parent_expr; -} - -struct lttng_event_expr *lttng_event_expr_array_field_element_create( - struct lttng_event_expr *array_field_expr, - unsigned int index) -{ - struct lttng_event_expr_array_field_element *expr = NULL; - struct lttng_event_expr *ret_parent_expr; - - /* The parent array field expression must be an l-value */ - if (!array_field_expr || - !lttng_event_expr_is_lvalue(array_field_expr)) { - goto error; - } - - expr = container_of(create_empty_expr( - LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT, - sizeof(*expr)), - struct lttng_event_expr_array_field_element, - parent); - if (!expr) { - goto error; - } - - expr->array_field_expr = array_field_expr; - expr->index = index; - ret_parent_expr = &expr->parent; - goto end; - -error: - if (expr) { - lttng_event_expr_destroy(&expr->parent); - } - ret_parent_expr = NULL; - -end: - return ret_parent_expr; -} - -const char *lttng_event_expr_event_payload_field_get_name( - const struct lttng_event_expr *expr) -{ - const char *ret = NULL; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD) { - goto end; - } - - ret = container_of(expr, - const struct lttng_event_expr_field, parent)->name; - -end: - return ret; -} - -const char *lttng_event_expr_channel_context_field_get_name( - const struct lttng_event_expr *expr) -{ - const char *ret = NULL; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD) { - goto end; - } - - ret = container_of(expr, - const struct lttng_event_expr_field, parent)->name; - -end: - return ret; -} - -const char *lttng_event_expr_app_specific_context_field_get_provider_name( - const struct lttng_event_expr *expr) -{ - const char *ret = NULL; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD) { - goto end; - } - - ret = container_of(expr, - const struct lttng_event_expr_app_specific_context_field, - parent)->provider_name; - -end: - return ret; -} - -const char *lttng_event_expr_app_specific_context_field_get_type_name( - const struct lttng_event_expr *expr) -{ - const char *ret = NULL; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD) { - goto end; - } - - ret = container_of(expr, - const struct lttng_event_expr_app_specific_context_field, - parent)->type_name; - -end: - return ret; -} - -const struct lttng_event_expr * -lttng_event_expr_array_field_element_get_parent_expr( - const struct lttng_event_expr *expr) -{ - const struct lttng_event_expr *ret = NULL; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT) { - goto end; - } - - ret = container_of(expr, - const struct lttng_event_expr_array_field_element, - parent)->array_field_expr; - -end: - return ret; -} - -enum lttng_event_expr_status lttng_event_expr_array_field_element_get_index( - const struct lttng_event_expr *expr, unsigned int *index) -{ - enum lttng_event_expr_status ret = LTTNG_EVENT_EXPR_STATUS_OK; - - if (!expr || expr->type != LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT || - !index) { - ret = LTTNG_EVENT_EXPR_STATUS_INVALID; - goto end; - } - - *index = container_of(expr, - const struct lttng_event_expr_array_field_element, - parent)->index; - -end: - return ret; -} - -bool lttng_event_expr_is_equal(const struct lttng_event_expr *expr_a, - const struct lttng_event_expr *expr_b) -{ - bool is_equal = true; - - if (!expr_a && !expr_b) { - /* Both `NULL`: equal */ - goto end; - } - - if (!expr_a || !expr_b) { - /* Only one `NULL`: not equal */ - goto not_equal; - } - - if (expr_a->type != expr_b->type) { - /* Different types: not equal */ - goto not_equal; - } - - switch (expr_a->type) { - case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: - case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: - { - const struct lttng_event_expr_field *field_expr_a = - container_of(expr_a, - const struct lttng_event_expr_field, - parent); - const struct lttng_event_expr_field *field_expr_b = - container_of(expr_b, - const struct lttng_event_expr_field, - parent); - - if (strcmp(field_expr_a->name, field_expr_b->name) != 0) { - goto not_equal; - } - - break; - } - case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: - { - const struct lttng_event_expr_app_specific_context_field *field_expr_a = - container_of(expr_a, - const struct lttng_event_expr_app_specific_context_field, - parent); - const struct lttng_event_expr_app_specific_context_field *field_expr_b = - container_of(expr_b, - const struct lttng_event_expr_app_specific_context_field, - parent); - - if (strcmp(field_expr_a->provider_name, - field_expr_b->provider_name) != 0) { - goto not_equal; - } - - if (strcmp(field_expr_a->type_name, - field_expr_b->type_name) != 0) { - goto not_equal; - } - - break; - } - case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: - { - const struct lttng_event_expr_array_field_element *elem_expr_a = - container_of(expr_a, - const struct lttng_event_expr_array_field_element, - parent); - const struct lttng_event_expr_array_field_element *elem_expr_b = - container_of(expr_b, - const struct lttng_event_expr_array_field_element, - parent); - - if (!lttng_event_expr_is_equal(elem_expr_a->array_field_expr, - elem_expr_b->array_field_expr)) { - goto not_equal; - } - - if (elem_expr_a->index != elem_expr_b->index) { - goto not_equal; - } - - break; - } - default: - break; - } - - goto end; - -not_equal: - is_equal = false; - -end: - return is_equal; -} - -void lttng_event_expr_destroy(struct lttng_event_expr *expr) -{ - if (!expr) { - goto end; - } - - switch (expr->type) { - case LTTNG_EVENT_EXPR_TYPE_EVENT_PAYLOAD_FIELD: - case LTTNG_EVENT_EXPR_TYPE_CHANNEL_CONTEXT_FIELD: - { - struct lttng_event_expr_field *field_expr = - container_of(expr, - struct lttng_event_expr_field, parent); - - free(field_expr->name); - break; - } - case LTTNG_EVENT_EXPR_TYPE_APP_SPECIFIC_CONTEXT_FIELD: - { - struct lttng_event_expr_app_specific_context_field *field_expr = - container_of(expr, - struct lttng_event_expr_app_specific_context_field, - parent); - - free(field_expr->provider_name); - free(field_expr->type_name); - break; - } - case LTTNG_EVENT_EXPR_TYPE_ARRAY_FIELD_ELEMENT: - { - struct lttng_event_expr_array_field_element *elem_expr = - container_of(expr, - struct lttng_event_expr_array_field_element, - parent); - - lttng_event_expr_destroy(elem_expr->array_field_expr); - break; - } - default: - break; - } - - free(expr); - -end: - return; -}