Various fixes for prototype branch

[lttng-tools.git] / src / common / evaluation.c

diff --git a/src/common/evaluation.c b/src/common/evaluation.c
index 41e59c1d530587d5527faefd6376671980a5a9c4..49cba5dd18fa999761ed8567d6637e0093021f98 100644 (file)
--- a/src/common/evaluation.c
+++ b/src/common/evaluation.c
@@ -16,10 +16,83 @@
  */
 
 #include <lttng/condition/evaluation-internal.h>
+#include <lttng/condition/buffer-usage-internal.h>
 #include <common/macros.h>
+#include <common/error.h>
 #include <stdbool.h>
 #include <assert.h>
 
+LTTNG_HIDDEN
+ssize_t lttng_evaluation_serialize(struct lttng_evaluation *evaluation,
+               char *buf)
+{
+       ssize_t ret, offset = 0;
+       struct lttng_evaluation_comm evaluation_comm;
+
+       evaluation_comm.type = (int8_t) evaluation->type;
+       if (buf) {
+               memcpy(buf, &evaluation_comm, sizeof(evaluation_comm));
+       }
+       offset += sizeof(evaluation_comm);
+
+       if (evaluation->serialize) {
+               ret = evaluation->serialize(evaluation,
+                               buf ? (buf + offset) : NULL);
+               if (ret < 0) {
+                       goto end;
+               }
+               offset += ret;
+       }
+
+       ret = offset;
+end:
+       return ret;
+}
+
+LTTNG_HIDDEN
+ssize_t lttng_evaluation_create_from_buffer(const char *buf,
+               struct lttng_evaluation **evaluation)
+{
+       ssize_t ret, evaluation_size = 0;
+       struct lttng_evaluation_comm *evaluation_comm =
+                       (struct lttng_evaluation_comm *) buf;
+
+       if (!buf || !evaluation) {
+               ret = -1;
+               goto end;
+       }
+
+       evaluation_size += sizeof(*evaluation_comm);
+       buf += evaluation_size;
+
+       switch ((enum lttng_condition_type) evaluation_comm->type) {
+       case LTTNG_CONDITION_TYPE_BUFFER_USAGE_LOW:
+               ret = lttng_evaluation_buffer_usage_low_create_from_buffer(buf,
+                               evaluation);
+               if (ret < 0) {
+                       goto end;
+               }
+               evaluation_size += ret;
+               break;
+       case LTTNG_CONDITION_TYPE_BUFFER_USAGE_HIGH:
+               ret = lttng_evaluation_buffer_usage_high_create_from_buffer(buf,
+                               evaluation);
+               if (ret < 0) {
+                       goto end;
+               }
+               evaluation_size += ret;
+               break;
+       default:
+               ERR("Attempted to create evaluation of unknown type (%i)",
+                               (int) evaluation_comm->type);
+               ret = -1;
+               goto end;
+       }
+       ret = evaluation_size;
+end:
+       return ret;
+}
+
 enum lttng_condition_type lttng_evaluation_get_type(
                struct lttng_evaluation *evaluation)
 {