relayd: rename fd-cap parameter to fd-pool-size

[lttng-tools.git] / src / common / defaults.h

diff --git a/src/common/defaults.h b/src/common/defaults.h
index 155739f460a2d0615f0c4053ae7954afa4d97351..56a7c94490014ae5cda156659dcb8c24a8609c2e 100644 (file)
--- a/src/common/defaults.h
+++ b/src/common/defaults.h
@@ -93,6 +93,21 @@
 #define DEFAULT_RELAYD_RUNDIR                  "%s"
 #define DEFAULT_RELAYD_PATH                    DEFAULT_RELAYD_RUNDIR "/relayd"
 
+#define DEFAULT_RELAYD_MIN_FD_POOL_SIZE                100
+/*
+ * The file descriptor pool size needs a reserve buffer to accomodate the
+ * indirect use of short-lived file descriptors. For instance, glibc will
+ * create a socket (and thus, use an fd) during calls to gethostname() or
+ * when querying the user's group. Other calls also probably make use of
+ * short-lived FDs.
+ *
+ * The theoritical maximal reserve corresponds to the number of threads as,
+ * in the worst case, they could all be making such calls.
+ *
+ * This value must be less than DEFAULT_RELAYD_MIN_FD_POOL_SIZE.
+ */
+#define DEFAULT_RELAYD_FD_POOL_SIZE_RESERVE    10
+
 /* Default lttng run directory */
 #define DEFAULT_LTTNG_HOME_ENV_VAR              "LTTNG_HOME"
 #define DEFAULT_LTTNG_FALLBACK_HOME_ENV_VAR    "HOME"
@@ -353,7 +368,8 @@
  * Name of the intermediate directory used to rename the trace chunk of a
  * session's first rotation.
  */
-#define DEFAULT_TEMPORARY_CHUNK_RENAME_DIRECTORY       ".tmp_rename_chunk"
+#define DEFAULT_CHUNK_TMP_OLD_DIRECTORY                        ".tmp_old_chunk"
+#define DEFAULT_CHUNK_TMP_NEW_DIRECTORY                        ".tmp_new_chunk"
 #define DEFAULT_ARCHIVED_TRACE_CHUNKS_DIRECTORY                "archives"
 
 /*