ust-fd: Add close_range declaration

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

diff --git a/liblttng-ust/lttng-context-vtid.c b/liblttng-ust/lttng-context-vtid.c
deleted file mode 100644 (file)
index d5664c9..0000000
--- a/liblttng-ust/lttng-context-vtid.c
+++ /dev/null
@@ -1,116 +0,0 @@
-/*
- * lttng-context-vtid.c
- *
- * LTTng UST vtid context.
- *
- * Copyright (C) 2009-2012 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
- */
-
-#include <sys/types.h>
-#include <unistd.h>
-#include <lttng/ust-events.h>
-#include <lttng/ust-tracer.h>
-#include <lttng/ringbuffer-config.h>
-#include "ltt-tracer-core.h"
-
-#ifdef __linux__
-#include <syscall.h>
-#endif
-
-#if defined(_syscall0)
-_syscall0(pid_t, gettid)
-#elif defined(__NR_gettid)
-static inline pid_t gettid(void)
-{
-       return syscall(__NR_gettid);
-}
-#else
-#warning "use pid as tid"
-static inline pid_t gettid(void)
-{
-       return getpid();
-}
-#endif
-
-/*
- * We cache the result to ensure we don't trigger a system call for
- * each event.
- */
-static __thread pid_t cached_vtid;
-
-/*
- * Upon fork or clone, the TID assigned to our thread is not the same as
- * we kept in cache. Luckily, we are the only thread surviving in the
- * child process, so we can simply clear our cached version.
- */
-void lttng_context_vtid_reset(void)
-{
-       cached_vtid = 0;
-}
-
-static
-size_t vtid_get_size(size_t offset)
-{
-       size_t size = 0;
-
-       size += lib_ring_buffer_align(offset, lttng_alignof(pid_t));
-       size += sizeof(pid_t);
-       return size;
-}
-
-static
-void vtid_record(struct lttng_ctx_field *field,
-                struct lttng_ust_lib_ring_buffer_ctx *ctx,
-                struct ltt_channel *chan)
-{
-       if (caa_unlikely(!cached_vtid))
-               cached_vtid = gettid();
-       lib_ring_buffer_align_ctx(ctx, lttng_alignof(cached_vtid));
-       chan->ops->event_write(ctx, &cached_vtid, sizeof(cached_vtid));
-}
-
-int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx)
-{
-       struct lttng_ctx_field *field;
-
-       field = lttng_append_context(ctx);
-       if (!field)
-               return -ENOMEM;
-       if (lttng_find_context(*ctx, "vtid")) {
-               lttng_remove_context_field(ctx, field);
-               return -EEXIST;
-       }
-       field->event_field.name = "vtid";
-       field->event_field.type.atype = atype_integer;
-       field->event_field.type.u.basic.integer.size = sizeof(pid_t) * CHAR_BIT;
-       field->event_field.type.u.basic.integer.alignment = lttng_alignof(pid_t) * CHAR_BIT;
-       field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(pid_t);
-       field->event_field.type.u.basic.integer.reverse_byte_order = 0;
-       field->event_field.type.u.basic.integer.base = 10;
-       field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
-       field->get_size = vtid_get_size;
-       field->record = vtid_record;
-       return 0;
-}
-
-/*
- * Force a read (imply TLS fixup for dlopen) of TLS variables.
- */
-void lttng_fixup_vtid_tls(void)
-{
-       asm volatile ("" : : "m" (cached_vtid));
-}