Make API CTF-agnostic

[babeltrace.git] / lib / ctf-ir / packet-header-field.c

diff --git a/lib/ctf-ir/packet-header-field.c b/lib/ctf-ir/packet-header-field.c
index 58d2716b3b9fc5ba81bdba186acc00cb2f1e98e1..17d88ad09cdcf40f55b1d8cee095ea6cc3bc4a3e 100644 (file)
--- a/lib/ctf-ir/packet-header-field.c
+++ b/lib/ctf-ir/packet-header-field.c
@@ -24,6 +24,7 @@
 #include <babeltrace/lib-logging-internal.h>
 
 #include <babeltrace/assert-pre-internal.h>
+#include <babeltrace/ctf-ir/trace-internal.h>
 #include <babeltrace/ctf-ir/packet-header-field.h>
 #include <babeltrace/ctf-ir/field-wrapper-internal.h>
 #include <babeltrace/ctf-ir/fields-internal.h>
@@ -34,9 +35,7 @@ struct bt_field *bt_packet_header_field_borrow_field(
 {
        struct bt_field_wrapper *field_wrapper = (void *) header_field;
 
-       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Event header field");
-       BT_ASSERT_PRE_NON_NULL(field_wrapper->field,
-               "Event header field's field object");
+       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Packet header field");
        return (void *) field_wrapper->field;
 }
 
@@ -44,7 +43,7 @@ void bt_packet_header_field_release(struct bt_packet_header_field *header_field)
 {
        struct bt_field_wrapper *field_wrapper = (void *) header_field;
 
-       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Event header field");
+       BT_ASSERT_PRE_NON_NULL(field_wrapper, "Packet header field");
 
        /*
         * Do not recycle because the pool could be destroyed at this
@@ -55,3 +54,34 @@ void bt_packet_header_field_release(struct bt_packet_header_field *header_field)
         */
        bt_field_wrapper_destroy(field_wrapper);
 }
+
+struct bt_packet_header_field *bt_packet_header_field_create(
+               struct bt_trace *trace)
+{
+       struct bt_field_wrapper *field_wrapper;
+
+       BT_ASSERT_PRE_NON_NULL(trace, "Trace");
+       BT_ASSERT_PRE(trace->packet_header_ft,
+               "Trace has no packet header field type: %!+t", trace);
+       field_wrapper = bt_field_wrapper_create(
+               &trace->packet_header_field_pool,
+               (void *) trace->packet_header_ft);
+       if (!field_wrapper) {
+               BT_LIB_LOGE("Cannot allocate one packet header field from trace: "
+                       "%![trace-]+t", trace);
+               goto error;
+       }
+
+       BT_ASSERT(field_wrapper->field);
+       bt_trace_freeze(trace);
+       goto end;
+
+error:
+       if (field_wrapper) {
+               bt_field_wrapper_destroy(field_wrapper);
+               field_wrapper = NULL;
+       }
+
+end:
+       return (void *) field_wrapper;
+}