lib: compile liblttng-ctl as C++

[lttng-tools.git] / include / lttng / event-field-value.h

diff --git a/include/lttng/event-field-value.h b/include/lttng/event-field-value.h
index db4a4fb3b5c2a86da020d7483206cfd0031835eb..02d93c66109d5cb834d27a0f2f9f0e14de3cab47 100644 (file)
--- a/include/lttng/event-field-value.h
+++ b/include/lttng/event-field-value.h
@@ -8,6 +8,7 @@
 #ifndef LTTNG_EVENT_FIELD_VALUE_H
 #define LTTNG_EVENT_FIELD_VALUE_H
 
+#include <lttng/lttng-export.h>
 #include <stdint.h>
 
 struct lttng_event_field_value;
@@ -103,7 +104,7 @@ enum lttng_event_field_value_status {
  * `LTTNG_EVENT_FIELD_VALUE_TYPE_INVALID`:
  *     `field_val` is `NULL`.
  */
-extern enum lttng_event_field_value_type lttng_event_field_value_get_type(
+LTTNG_EXPORT extern enum lttng_event_field_value_type lttng_event_field_value_get_type(
                const struct lttng_event_field_value *field_val);
 
 /*
@@ -122,7 +123,7 @@ extern enum lttng_event_field_value_type lttng_event_field_value_get_type(
  *       `LTTNG_EVENT_FIELD_VALUE_TYPE_UNSIGNED_ENUM`.
  *     * `val` is `NULL`.
  */
-extern enum lttng_event_field_value_status
+LTTNG_EXPORT extern enum lttng_event_field_value_status
 lttng_event_field_value_unsigned_int_get_value(
                const struct lttng_event_field_value *field_val, uint64_t *val);
 
@@ -142,7 +143,7 @@ lttng_event_field_value_unsigned_int_get_value(
  *       `LTTNG_EVENT_FIELD_VALUE_TYPE_SIGNED_ENUM`.
  *     * `val` is `NULL`.
  */
-extern enum lttng_event_field_value_status
+LTTNG_EXPORT extern enum lttng_event_field_value_status
 lttng_event_field_value_signed_int_get_value(
                const struct lttng_event_field_value *field_val, int64_t *val);
 
@@ -161,7 +162,7 @@ lttng_event_field_value_signed_int_get_value(
  *       `LTTNG_EVENT_FIELD_VALUE_TYPE_REAL`.
  *     * `val` is `NULL`.
  */
-extern enum lttng_event_field_value_status
+LTTNG_EXPORT extern enum lttng_event_field_value_status
 lttng_event_field_value_real_get_value(
                const struct lttng_event_field_value *field_val, double *val);
 
@@ -169,12 +170,18 @@ lttng_event_field_value_real_get_value(
  * Returns the raw value (an UTF-8 C string) of the string event field
  * value `field_val`, or `NULL` if:
  *
- * * `field_val` is `NULL`.
- * * The type of `field_val` is not
- *   `LTTNG_EVENT_FIELD_VALUE_TYPE_STRING`.
+ * `LTTNG_EVENT_FIELD_VALUE_STATUS_OK`:
+ *     Success.
+ *
+ * `LTTNG_EVENT_FIELD_VALUE_STATUS_INVALID`:
+ *     * `field_val` is `NULL`.
+ *     * The type of `field_val` is not
+ *       `LTTNG_EVENT_FIELD_VALUE_TYPE_STRING`.
  */
-extern const char *lttng_event_field_value_string_get_value(
-               const struct lttng_event_field_value *field_val);
+LTTNG_EXPORT extern enum lttng_event_field_value_status
+lttng_event_field_value_string_get_value(
+               const struct lttng_event_field_value *field_val,
+               const char **value);
 
 /*
  * Sets `*length` to the length (the number of contained elements) of
@@ -191,7 +198,7 @@ extern const char *lttng_event_field_value_string_get_value(
  *       `LTTNG_EVENT_FIELD_VALUE_TYPE_ARRAY`.
  *     * `length` is `NULL`.
  */
-extern enum lttng_event_field_value_status
+LTTNG_EXPORT extern enum lttng_event_field_value_status
 lttng_event_field_value_array_get_length(
                const struct lttng_event_field_value *field_val,
                unsigned int *length);
@@ -216,7 +223,7 @@ lttng_event_field_value_array_get_length(
  *     * No event field value exists at index `index` within
  *       `field_val`.
  */
-extern enum lttng_event_field_value_status
+LTTNG_EXPORT extern enum lttng_event_field_value_status
 lttng_event_field_value_array_get_element_at_index(
                const struct lttng_event_field_value *field_val,
                unsigned int index,