Refactoring: hide internal fields of ring buffer context

[lttng-ust.git] / liblttng-ust / lttng-context-user-ns.c

diff --git a/liblttng-ust/lttng-context-user-ns.c b/liblttng-ust/lttng-context-user-ns.c
index fccf70f2491fc6c3133bd99159dd8e99a021fc0d..f42ac0791edcfded382870c2adc63b0fd3720e8e 100644 (file)
--- a/liblttng-ust/lttng-context-user-ns.c
+++ b/liblttng-ust/lttng-context-user-ns.c
@@ -8,13 +8,14 @@
  */
 
 #define _LGPL_SOURCE
+#include <limits.h>
 #include <stddef.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <unistd.h>
 #include <lttng/ust-events.h>
 #include <lttng/ust-tracer.h>
-#include <lttng/ringbuffer-config.h>
+#include <lttng/ringbuffer-context.h>
 
 #include "context-internal.h"
 #include "ns.h"
@@ -76,7 +77,7 @@ size_t user_ns_get_size(struct lttng_ust_ctx_field *field, size_t offset)
 {
        size_t size = 0;
 
-       size += lib_ring_buffer_align(offset, lttng_alignof(ino_t));
+       size += lttng_ust_lib_ring_buffer_align(offset, lttng_ust_rb_alignof(ino_t));
        size += sizeof(ino_t);
        return size;
 }
@@ -84,13 +85,12 @@ size_t user_ns_get_size(struct lttng_ust_ctx_field *field, size_t offset)
 static
 void user_ns_record(struct lttng_ust_ctx_field *field,
                 struct lttng_ust_lib_ring_buffer_ctx *ctx,
-                struct lttng_channel *chan)
+                struct lttng_ust_channel_buffer *chan)
 {
        ino_t user_ns;
 
        user_ns = get_user_ns();
-       lib_ring_buffer_align_ctx(ctx, lttng_alignof(user_ns));
-       chan->ops->event_write(ctx, &user_ns, sizeof(user_ns));
+       chan->ops->event_write(ctx, &user_ns, sizeof(user_ns), lttng_ust_rb_alignof(user_ns));
 }
 
 static
@@ -103,25 +103,40 @@ void user_ns_get_value(struct lttng_ust_ctx_field *field,
 int lttng_add_user_ns_to_ctx(struct lttng_ust_ctx **ctx)
 {
        struct lttng_ust_ctx_field *field;
-
-       field = lttng_append_context(ctx);
-       if (!field)
+       struct lttng_ust_type_common *type;
+       int ret;
+
+       type = lttng_ust_create_type_integer(sizeof(ino_t) * CHAR_BIT,
+                       lttng_ust_rb_alignof(ino_t) * CHAR_BIT,
+                       lttng_ust_is_signed_type(ino_t),
+                       BYTE_ORDER, 10);
+       if (!type)
                return -ENOMEM;
+       field = lttng_append_context(ctx);
+       if (!field) {
+               ret = -ENOMEM;
+               goto error_context;
+       }
        if (lttng_find_context(*ctx, "user_ns")) {
-               lttng_remove_context_field(ctx, field);
-               return -EEXIST;
+               ret = -EEXIST;
+               goto error_find_context;
+       }
+       field->event_field->name = strdup("user_ns");
+       if (!field->event_field->name) {
+               ret = -ENOMEM;
+               goto error_name;
        }
-       field->event_field->name = "user_ns";
-       field->event_field->type.atype = atype_integer;
-       field->event_field->type.u.integer.size = sizeof(ino_t) * CHAR_BIT;
-       field->event_field->type.u.integer.alignment = lttng_alignof(ino_t) * CHAR_BIT;
-       field->event_field->type.u.integer.signedness = lttng_is_signed_type(ino_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->event_field->type = type;
        field->get_size = user_ns_get_size;
        field->record = user_ns_record;
        field->get_value = user_ns_get_value;
        lttng_context_update(*ctx);
        return 0;
+
+error_name:
+error_find_context:
+       lttng_remove_context_field(ctx, field);
+error_context:
+       lttng_ust_destroy_type(type);
+       return ret;
 }