X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=liblttng-ust%2Flttng-context-vpid.c;h=11978e6e33d8e0f93ac4fb0bd34e12495790d7e4;hb=HEAD;hp=d4b4a2cf9da81414f949f584d2d9cc1bb65fda23;hpb=c0c0989ab70574e09b2f7e8b48c2da6af664a849;p=lttng-ust.git

diff --git a/liblttng-ust/lttng-context-vpid.c b/liblttng-ust/lttng-context-vpid.c
deleted file mode 100644
index d4b4a2cf..00000000
--- a/liblttng-ust/lttng-context-vpid.c
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * SPDX-License-Identifier: LGPL-2.1-only
- *
- * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * LTTng UST vpid context.
- */
-
-#define _LGPL_SOURCE
-#include <stddef.h>
-#include <sys/types.h>
-#include <unistd.h>
-#include <lttng/ust-events.h>
-#include <lttng/ust-tracer.h>
-#include <lttng/ringbuffer-config.h>
-
-/*
- * We cache the result to ensure we don't trigger a system call for
- * each event.
- */
-static pid_t cached_vpid;
-
-static inline
-pid_t wrapper_getvpid(void)
-{
-	pid_t vpid;
-
-	vpid = CMM_LOAD_SHARED(cached_vpid);
-	if (caa_unlikely(!vpid)) {
-		vpid = getpid();
-		CMM_STORE_SHARED(cached_vpid, vpid);
-	}
-	return vpid;
-}
-
-/*
- * Upon fork or clone, the PID assigned to our thread is not the same as
- * we kept in cache.
- */
-void lttng_context_vpid_reset(void)
-{
-	CMM_STORE_SHARED(cached_vpid, 0);
-}
-
-static
-size_t vpid_get_size(struct lttng_ctx_field *field, 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 vpid_record(struct lttng_ctx_field *field,
-		 struct lttng_ust_lib_ring_buffer_ctx *ctx,
-		 struct lttng_channel *chan)
-{
-	pid_t vpid = wrapper_getvpid();
-
-	lib_ring_buffer_align_ctx(ctx, lttng_alignof(vpid));
-	chan->ops->event_write(ctx, &vpid, sizeof(vpid));
-}
-
-static
-void vpid_get_value(struct lttng_ctx_field *field,
-		struct lttng_ctx_value *value)
-{
-	value->u.s64 = wrapper_getvpid();
-}
-
-int lttng_add_vpid_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, "vpid")) {
-		lttng_remove_context_field(ctx, field);
-		return -EEXIST;
-	}
-	field->event_field.name = "vpid";
-	field->event_field.type.atype = atype_integer;
-	field->event_field.type.u.integer.size = sizeof(pid_t) * CHAR_BIT;
-	field->event_field.type.u.integer.alignment = lttng_alignof(pid_t) * CHAR_BIT;
-	field->event_field.type.u.integer.signedness = lttng_is_signed_type(pid_t);
-	field->event_field.type.u.integer.reverse_byte_order = 0;
-	field->event_field.type.u.integer.base = 10;
-	field->event_field.type.u.integer.encoding = lttng_encode_none;
-	field->get_size = vpid_get_size;
-	field->record = vpid_record;
-	field->get_value = vpid_get_value;
-	lttng_context_update(*ctx);
-	return 0;
-}