X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-provider.c;h=5557b137cdc24f4ed68077c7bc72d23f94e7e779;hb=HEAD;hp=46a18c9fa92fa82ac2b410115dabbe075753d9ea;hpb=fc80554e0cd4c7739c64fe8bc8b87a77d3c19d07;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-context-provider.c b/liblttng-ust/lttng-context-provider.c
deleted file mode 100644
index 46a18c9f..00000000
--- a/liblttng-ust/lttng-context-provider.c
+++ /dev/null
@@ -1,161 +0,0 @@
-/*
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- * Copyright (C) 2016 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * LTTng UST application context provider.
- */
-
-#define _LGPL_SOURCE
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <ust-context-provider.h>
-
-#include "context-internal.h"
-#include "lttng-tracer-core.h"
-#include "jhash.h"
-#include "context-provider-internal.h"
-#include <ust-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 colon 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);
-
-	lttng_ust_context_set_event_notifier_group_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);
-
-	lttng_ust_context_set_event_notifier_group_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;
-}