X-Git-Url: http://git.efficios.com/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Fsession.h;h=4e515ad7703bc03b3bb5530118063f29ac7051f5;hp=2c9b842d4c693be23478c30d2e40c33e4d22d623;hb=36d2e35df61339e4394e84ad9790b984d259e0f0;hpb=1239a312e7e0e4c33948fdaf04e7637cb93c8b10 diff --git a/include/lttng/session.h b/include/lttng/session.h index 2c9b842d4..4e515ad77 100644 --- a/include/lttng/session.h +++ b/include/lttng/session.h @@ -32,7 +32,7 @@ extern "C" { */ #define LTTNG_SESSION_PADDING1 12 struct lttng_session { - char name[NAME_MAX]; + char name[LTTNG_NAME_MAX]; /* The path where traces are written */ char path[PATH_MAX]; uint32_t enabled; /* enabled/started: 1, disabled/stopped: 0 */ @@ -104,6 +104,51 @@ extern int lttng_destroy_session(const char *name); */ extern int lttng_list_sessions(struct lttng_session **sessions); +/* + * Set the shared memory path for a session. + * + * Sets the (optional) file system path where shared memory buffers will + * be created for the session. This is useful for buffer extraction on + * crash, when used with filesystems like pramfs. + * + * Return 0 on success else a negative LTTng error code. + */ +extern int lttng_set_session_shm_path(const char *session_name, + const char *shm_path); + +/* + * Add PID to session tracker. + * + * A pid argument >= 0 adds the PID to the session tracker. + * A pid argument of -1 means "track all PIDs". + * + * Return 0 on success else a negative LTTng error code. + */ +extern int lttng_track_pid(struct lttng_handle *handle, int pid); + +/* + * Remove PID from session tracker. + * + * A pid argument >= 0 removes the PID from the session tracker. + * A pid argument of -1 means "untrack all PIDs". + * + * Return 0 on success else a negative LTTng error code. + */ +extern int lttng_untrack_pid(struct lttng_handle *handle, int pid); + +/* + * List PIDs in the tracker. + * + * enabled is set to whether the PID tracker is enabled. + * pids is set to an allocated array of PIDs currently tracked. On + * success, pids must be freed by the caller. + * nr_pids is set to the number of entries contained by the pids array. + * + * Returns 0 on success, else a negative LTTng error code. + */ +extern int lttng_list_tracker_pids(struct lttng_handle *handle, + int *enabled, int32_t **pids, size_t *nr_pids); + #ifdef __cplusplus } #endif