ust-fd: Add close_range declaration

[lttng-ust.git] / liblttng-ust / lttng-context-provider.c

diff --git a/liblttng-ust/lttng-context-provider.c b/liblttng-ust/lttng-context-provider.c
deleted file mode 100644 (file)
index 8e065ab..0000000
--- a/liblttng-ust/lttng-context-provider.c
+++ /dev/null
@@ -1,159 +0,0 @@
-/*
- * lttng-context-provider.c
- *
- * LTTng UST application context provider.
- *
- * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#define _LGPL_SOURCE
-#include <sys/types.h>
-#include <unistd.h>
-#include <lttng/ust-context-provider.h>
-#include "lttng-tracer-core.h"
-#include "jhash.h"
-#include <helper.h>
-
-#define CONTEXT_PROVIDER_HT_BITS       12
-#define CONTEXT_PROVIDER_HT_SIZE       (1U << CONTEXT_PROVIDER_HT_BITS)
-struct context_provider_ht {
-       struct cds_hlist_head table[CONTEXT_PROVIDER_HT_SIZE];
-};
-
-static struct context_provider_ht context_provider_ht;
-
-static struct lttng_ust_context_provider *
-               lookup_provider_by_name(const char *name)
-{
-       struct cds_hlist_head *head;
-       struct cds_hlist_node *node;
-       struct lttng_ust_context_provider *provider;
-       uint32_t hash;
-       const char *end;
-       size_t len;
-
-       /* Lookup using everything before first ':' as key. */
-       end = strchr(name, ':');
-       if (end)
-               len = end - name;
-       else
-               len = strlen(name);
-       hash = jhash(name, len, 0);
-       head = &context_provider_ht.table[hash & (CONTEXT_PROVIDER_HT_SIZE - 1)];
-       cds_hlist_for_each_entry(provider, node, head, node) {
-               if (!strncmp(provider->name, name, len))
-                       return provider;
-       }
-       return NULL;
-}
-
-int lttng_ust_context_provider_register(struct lttng_ust_context_provider *provider)
-{
-       struct cds_hlist_head *head;
-       size_t name_len = strlen(provider->name);
-       uint32_t hash;
-       int ret = 0;
-
-       lttng_ust_fixup_tls();
-
-       /* Provider name starts with "$app.". */
-       if (strncmp("$app.", provider->name, strlen("$app.") != 0))
-               return -EINVAL;
-       /* Provider name cannot contain a column character. */
-       if (strchr(provider->name, ':'))
-               return -EINVAL;
-       if (ust_lock()) {
-               ret = -EBUSY;
-               goto end;
-       }
-       if (lookup_provider_by_name(provider->name)) {
-               ret = -EBUSY;
-               goto end;
-       }
-       hash = jhash(provider->name, name_len, 0);
-       head = &context_provider_ht.table[hash & (CONTEXT_PROVIDER_HT_SIZE - 1)];
-       cds_hlist_add_head(&provider->node, head);
-       lttng_ust_context_set_session_provider(provider->name,
-               provider->get_size, provider->record,
-               provider->get_value);
-end:
-       ust_unlock();
-       return ret;
-}
-
-void lttng_ust_context_provider_unregister(struct lttng_ust_context_provider *provider)
-{
-       lttng_ust_fixup_tls();
-
-       if (ust_lock())
-               goto end;
-       lttng_ust_context_set_session_provider(provider->name,
-               lttng_ust_dummy_get_size, lttng_ust_dummy_record,
-               lttng_ust_dummy_get_value);
-       cds_hlist_del(&provider->node);
-end:
-       ust_unlock();
-}
-
-/*
- * Called with ust mutex held.
- * Add application context to array of context, even if the application
- * context is not currently loaded by application. It will then use the
- * dummy callbacks in that case.
- * Always performed before tracing is started, since it modifies
- * metadata describing the context.
- */
-int lttng_ust_add_app_context_to_ctx_rcu(const char *name,
-               struct lttng_ctx **ctx)
-{
-       struct lttng_ust_context_provider *provider;
-       struct lttng_ctx_field new_field;
-       int ret;
-
-       if (*ctx && lttng_find_context(*ctx, name))
-               return -EEXIST;
-       /*
-        * For application context, add it by expanding
-        * ctx array.
-        */
-       memset(&new_field, 0, sizeof(new_field));
-       new_field.field_name = strdup(name);
-       if (!new_field.field_name)
-               return -ENOMEM;
-       new_field.event_field.name = new_field.field_name;
-       new_field.event_field.type.atype = atype_dynamic;
-       /*
-        * If provider is not found, we add the context anyway, but
-        * it will provide a dummy context.
-        */
-       provider = lookup_provider_by_name(name);
-       if (provider) {
-               new_field.get_size = provider->get_size;
-               new_field.record = provider->record;
-               new_field.get_value = provider->get_value;
-       } else {
-               new_field.get_size = lttng_ust_dummy_get_size;
-               new_field.record = lttng_ust_dummy_record;
-               new_field.get_value = lttng_ust_dummy_get_value;
-       }
-       ret = lttng_context_add_rcu(ctx, &new_field);
-       if (ret) {
-               free(new_field.field_name);
-               return ret;
-       }
-       return 0;
-}