Fix: define _LGPL_SOURCE in C files

[lttng-tools.git] / src / bin / lttng-sessiond / snapshot.c

diff --git a/src/bin/lttng-sessiond/snapshot.c b/src/bin/lttng-sessiond/snapshot.c
index d2fc8ca691a15de1455dbb5cb3019f41cd756b09..1060269f3a9e0b15232f07ec380e643fb027a18c 100644 (file)
--- a/src/bin/lttng-sessiond/snapshot.c
+++ b/src/bin/lttng-sessiond/snapshot.c
@@ -16,6 +16,7 @@
  */
 
 #define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <assert.h>
 #include <inttypes.h>
 #include <string.h>
@@ -24,6 +25,7 @@
 #include <common/defaults.h>
 
 #include "snapshot.h"
+#include "utils.h"
 
 /*
  * Return the atomically incremented value of next_output_id.
@@ -47,6 +49,8 @@ static int output_init(uint64_t max_size, const char *name,
 
        assert(output);
 
+       memset(output, 0, sizeof(struct snapshot_output));
+
        if (max_size == (uint64_t) -1ULL) {
                max_size = 0;
        }
@@ -78,6 +82,7 @@ static int output_init(uint64_t max_size, const char *name,
                ret = -ENOMEM;
                goto error;
        }
+       output->consumer->snapshot = 1;
 
        /* No URL given. */
        if (nb_uri == 0) {
@@ -222,6 +227,32 @@ void snapshot_output_destroy(struct snapshot_output *obj)
        free(obj);
 }
 
+/*
+ * RCU read side lock MUST be acquired before calling this since the returned
+ * pointer is in a RCU hash table.
+ *
+ * Return the reference on success or else NULL.
+ */
+struct snapshot_output *snapshot_find_output_by_name(const char *name,
+               struct snapshot *snapshot)
+{
+       struct lttng_ht_iter iter;
+       struct snapshot_output *output = NULL;
+
+       assert(snapshot);
+       assert(name);
+
+       cds_lfht_for_each_entry(snapshot->output_ht->ht, &iter.iter, output,
+               node.node) {
+               if (!strncmp(output->name, name, strlen(name))) {
+                       return output;
+               }
+       }
+
+       /* Not found */
+       return NULL;
+}
+
 /*
  * RCU read side lock MUST be acquired before calling this since the returned
  * pointer is in a RCU hash table.
@@ -292,4 +323,5 @@ void snapshot_destroy(struct snapshot *obj)
                snapshot_output_destroy(output);
        }
        rcu_read_unlock();
+       ht_cleanup_push(obj->output_ht);
 }