+++ /dev/null
-/*
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#define _LGPL_SOURCE
-#include <stdint.h>
-#include <stddef.h>
-#include <stdlib.h>
-
-#include "context-internal.h"
-#include "ust-events-internal.h"
-#include <usterr-signal-safe.h>
-#include "lttng-tracer-core.h"
-#include "lttng-rb-clients.h"
-#include "lttng-counter-client.h"
-#include "jhash.h"
-
-static CDS_LIST_HEAD(lttng_transport_list);
-static CDS_LIST_HEAD(lttng_counter_transport_list);
-
-struct lttng_transport *lttng_ust_transport_find(const char *name)
-{
- struct lttng_transport *transport;
-
- cds_list_for_each_entry(transport, <tng_transport_list, node) {
- if (!strcmp(transport->name, name))
- return transport;
- }
- return NULL;
-}
-
-struct lttng_counter_transport *lttng_counter_transport_find(const char *name)
-{
- struct lttng_counter_transport *transport;
-
- cds_list_for_each_entry(transport, <tng_counter_transport_list, node) {
- if (!strcmp(transport->name, name))
- return transport;
- }
- return NULL;
-}
-
-/**
- * lttng_transport_register - LTT transport registration
- * @transport: transport structure
- *
- * Registers a transport which can be used as output to extract the data out of
- * LTTng. Called with ust_lock held.
- */
-void lttng_transport_register(struct lttng_transport *transport)
-{
- cds_list_add_tail(&transport->node, <tng_transport_list);
-}
-
-/**
- * lttng_transport_unregister - LTT transport unregistration
- * @transport: transport structure
- * Called with ust_lock held.
- */
-void lttng_transport_unregister(struct lttng_transport *transport)
-{
- cds_list_del(&transport->node);
-}
-
-/**
- * lttng_counter_transport_register - LTTng counter transport registration
- * @transport: transport structure
- *
- * Registers a counter transport which can be used as output to extract
- * the data out of LTTng. Called with ust_lock held.
- */
-void lttng_counter_transport_register(struct lttng_counter_transport *transport)
-{
- cds_list_add_tail(&transport->node, <tng_counter_transport_list);
-}
-
-/**
- * lttng_counter_transport_unregister - LTTng counter transport unregistration
- * @transport: transport structure
- * Called with ust_lock held.
- */
-void lttng_counter_transport_unregister(struct lttng_counter_transport *transport)
-{
- cds_list_del(&transport->node);
-}
-
-/*
- * Needed by comm layer.
- */
-struct lttng_enum *lttng_ust_enum_get_from_desc(struct lttng_ust_session *session,
- const struct lttng_ust_enum_desc *enum_desc)
-{
- struct lttng_enum *_enum;
- struct cds_hlist_head *head;
- struct cds_hlist_node *node;
- size_t name_len = strlen(enum_desc->name);
- uint32_t hash;
-
- hash = jhash(enum_desc->name, name_len, 0);
- head = &session->priv->enums_ht.table[hash & (LTTNG_UST_ENUM_HT_SIZE - 1)];
- cds_hlist_for_each_entry(_enum, node, head, hlist) {
- assert(_enum->desc);
- if (_enum->desc == enum_desc)
- return _enum;
- }
- return NULL;
-}
-
-size_t lttng_ust_dummy_get_size(void *priv __attribute__((unused)),
- size_t offset)
-{
- size_t size = 0;
-
- size += lttng_ust_lib_ring_buffer_align(offset, lttng_ust_rb_alignof(char));
- size += sizeof(char); /* tag */
- return size;
-}
-
-void lttng_ust_dummy_record(void *priv __attribute__((unused)),
- struct lttng_ust_lib_ring_buffer_ctx *ctx,
- struct lttng_ust_channel_buffer *chan)
-{
- char sel_char = (char) LTTNG_UST_DYNAMIC_TYPE_NONE;
-
- chan->ops->event_write(ctx, &sel_char, sizeof(sel_char), lttng_ust_rb_alignof(sel_char));
-}
-
-void lttng_ust_dummy_get_value(void *priv __attribute__((unused)),
- struct lttng_ust_ctx_value *value)
-{
- value->sel = LTTNG_UST_DYNAMIC_TYPE_NONE;
-}
-
-int lttng_context_is_app(const char *name)
-{
- if (strncmp(name, "$app.", strlen("$app.")) != 0) {
- return 0;
- }
- return 1;
-}
-
-struct lttng_ust_channel_buffer *lttng_ust_alloc_channel_buffer(void)
-{
- struct lttng_ust_channel_buffer *lttng_chan_buf;
- struct lttng_ust_channel_common *lttng_chan_common;
- struct lttng_ust_channel_buffer_private *lttng_chan_buf_priv;
-
- lttng_chan_buf = zmalloc(sizeof(struct lttng_ust_channel_buffer));
- if (!lttng_chan_buf)
- goto lttng_chan_buf_error;
- lttng_chan_buf->struct_size = sizeof(struct lttng_ust_channel_buffer);
- lttng_chan_common = zmalloc(sizeof(struct lttng_ust_channel_common));
- if (!lttng_chan_common)
- goto lttng_chan_common_error;
- lttng_chan_common->struct_size = sizeof(struct lttng_ust_channel_common);
- lttng_chan_buf_priv = zmalloc(sizeof(struct lttng_ust_channel_buffer_private));
- if (!lttng_chan_buf_priv)
- goto lttng_chan_buf_priv_error;
- lttng_chan_buf->parent = lttng_chan_common;
- lttng_chan_common->type = LTTNG_UST_CHANNEL_TYPE_BUFFER;
- lttng_chan_common->child = lttng_chan_buf;
- lttng_chan_buf->priv = lttng_chan_buf_priv;
- lttng_chan_common->priv = <tng_chan_buf_priv->parent;
- lttng_chan_buf_priv->pub = lttng_chan_buf;
- lttng_chan_buf_priv->parent.pub = lttng_chan_common;
-
- return lttng_chan_buf;
-
-lttng_chan_buf_priv_error:
- free(lttng_chan_common);
-lttng_chan_common_error:
- free(lttng_chan_buf);
-lttng_chan_buf_error:
- return NULL;
-}
-
-void lttng_ust_free_channel_common(struct lttng_ust_channel_common *chan)
-{
- switch (chan->type) {
- case LTTNG_UST_CHANNEL_TYPE_BUFFER:
- {
- struct lttng_ust_channel_buffer *chan_buf;
-
- chan_buf = (struct lttng_ust_channel_buffer *)chan->child;
- free(chan_buf->parent);
- free(chan_buf->priv);
- free(chan_buf);
- break;
- }
- default:
- abort();
- }
-}
-
-void lttng_ust_ring_buffer_clients_init(void)
-{
- lttng_ring_buffer_metadata_client_init();
- lttng_ring_buffer_client_overwrite_init();
- lttng_ring_buffer_client_overwrite_rt_init();
- lttng_ring_buffer_client_discard_init();
- lttng_ring_buffer_client_discard_rt_init();
-}
-
-void lttng_ust_ring_buffer_clients_exit(void)
-{
- lttng_ring_buffer_client_discard_rt_exit();
- lttng_ring_buffer_client_discard_exit();
- lttng_ring_buffer_client_overwrite_rt_exit();
- lttng_ring_buffer_client_overwrite_exit();
- lttng_ring_buffer_metadata_client_exit();
-}
-
-void lttng_ust_counter_clients_init(void)
-{
- lttng_counter_client_percpu_64_modular_init();
- lttng_counter_client_percpu_32_modular_init();
-}
-
-void lttng_ust_counter_clients_exit(void)
-{
- lttng_counter_client_percpu_32_modular_exit();
- lttng_counter_client_percpu_64_modular_exit();
-}
projects / lttng-ust.git / blobdiff