* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <lttng/constant.h>
-#include <common/string-utils/format.h>
-#include <common/trace-chunk.h>
-#include <common/trace-chunk-registry.h>
-#include <common/hashtable/utils.h>
-#include <common/hashtable/hashtable.h>
-#include <common/error.h>
-#include <common/utils.h>
-#include <common/time.h>
-#include <common/optional.h>
#include <common/compat/directory-handle.h>
#include <common/credentials.h>
#include <common/defaults.h>
#include <common/dynamic-array.h>
+#include <common/error.h>
+#include <common/fd-tracker/fd-tracker.h>
+#include <common/hashtable/hashtable.h>
+#include <common/hashtable/utils.h>
+#include <common/optional.h>
+#include <common/string-utils/format.h>
+#include <common/time.h>
+#include <common/trace-chunk-registry.h>
+#include <common/trace-chunk.h>
+#include <common/utils.h>
+#include <lttng/constant.h>
-#include <urcu/ref.h>
-#include <urcu/rculfhash.h>
-#include <sys/stat.h>
#include <inttypes.h>
#include <pthread.h>
#include <stdio.h>
+#include <sys/stat.h>
+#include <urcu/rculfhash.h>
+#include <urcu/ref.h>
/*
* Two ISO 8601-compatible timestamps, separated by a hypen, followed an
/* Move a completed trace chunk to the 'completed' trace archive folder. */
static
int lttng_trace_chunk_move_to_completed_post_release(struct lttng_trace_chunk *trace_chunk);
+/* Empty callback. */
+static
+int lttng_trace_chunk_no_operation(struct lttng_trace_chunk *trace_chunk);
+/* Unlink old chunk files. */
+static
+int lttng_trace_chunk_delete_post_release(struct lttng_trace_chunk *trace_chunk);
static
enum lttng_trace_chunk_status lttng_trace_chunk_rename_path_no_lock(
struct lttng_trace_chunk *chunk, const char *path);
struct lttng_directory_handle *session_output_directory;
struct lttng_directory_handle *chunk_directory;
LTTNG_OPTIONAL(enum lttng_trace_chunk_command_type) close_command;
+ /*
+ * fd_tracker instance through which file descriptors should be
+ * created/closed.
+ *
+ * An fd_tracker always outlives any trace chunk; there is no
+ * need to perform any reference counting of that object.
+ */
+ struct fd_tracker *fd_tracker;
};
/* A trace chunk is uniquely identified by its (session id, chunk id) tuple. */
chunk_command close_command_post_release_funcs[] = {
[LTTNG_TRACE_CHUNK_COMMAND_TYPE_MOVE_TO_COMPLETED] =
lttng_trace_chunk_move_to_completed_post_release,
+ [LTTNG_TRACE_CHUNK_COMMAND_TYPE_NO_OPERATION] =
+ lttng_trace_chunk_no_operation,
+ [LTTNG_TRACE_CHUNK_COMMAND_TYPE_DELETE] =
+ lttng_trace_chunk_delete_post_release,
};
static
return NULL;
}
+LTTNG_HIDDEN
+void lttng_trace_chunk_set_fd_tracker(struct lttng_trace_chunk *chunk,
+ struct fd_tracker *fd_tracker)
+{
+ assert(!chunk->session_output_directory);
+ assert(!chunk->chunk_directory);
+ assert(lttng_dynamic_pointer_array_get_count(&chunk->files) == 0);
+ chunk->fd_tracker = fd_tracker;
+}
+
LTTNG_HIDDEN
struct lttng_trace_chunk *lttng_trace_chunk_copy(
struct lttng_trace_chunk *source_chunk)
new_chunk->chunk_directory = source_chunk->chunk_directory;
}
new_chunk->close_command = source_chunk->close_command;
+ new_chunk->fd_tracker = source_chunk->fd_tracker;
pthread_mutex_unlock(&source_chunk->lock);
end:
return new_chunk;
return status;
}
+LTTNG_HIDDEN
+enum lttng_trace_chunk_status
+lttng_trace_chunk_get_session_output_directory_handle(
+ struct lttng_trace_chunk *chunk,
+ struct lttng_directory_handle **handle)
+{
+ enum lttng_trace_chunk_status status = LTTNG_TRACE_CHUNK_STATUS_OK;
+
+ pthread_mutex_lock(&chunk->lock);
+ if (!chunk->session_output_directory) {
+ status = LTTNG_TRACE_CHUNK_STATUS_NONE;
+ *handle = NULL;
+ goto end;
+ } else {
+ const bool reference_acquired = lttng_directory_handle_get(
+ chunk->session_output_directory);
+
+ assert(reference_acquired);
+ *handle = chunk->session_output_directory;
+ }
+end:
+ pthread_mutex_unlock(&chunk->lock);
+ return status;
+}
+
LTTNG_HIDDEN
enum lttng_trace_chunk_status lttng_trace_chunk_borrow_chunk_directory_handle(
struct lttng_trace_chunk *chunk,
return ret;
}
+static
+int lttng_trace_chunk_no_operation(struct lttng_trace_chunk *trace_chunk)
+{
+ return 0;
+}
+
+static
+int lttng_trace_chunk_delete_post_release_user(
+ struct lttng_trace_chunk *trace_chunk)
+{
+ int ret = 0;
+
+ DBG("Trace chunk \"delete\" close command post-release (User)");
+
+ /* Unlink all files. */
+ while (lttng_dynamic_pointer_array_get_count(&trace_chunk->files) != 0) {
+ enum lttng_trace_chunk_status status;
+ const char *path;
+
+ /* Remove first. */
+ path = lttng_dynamic_pointer_array_get_pointer(
+ &trace_chunk->files, 0);
+ DBG("Unlink file: %s", path);
+ status = lttng_trace_chunk_unlink_file(trace_chunk, path);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ERR("Error unlinking file '%s' when deleting chunk", path);
+ ret = -1;
+ goto end;
+ }
+ }
+end:
+ return ret;
+}
+
+static
+int lttng_trace_chunk_delete_post_release_owner(
+ struct lttng_trace_chunk *trace_chunk)
+{
+ enum lttng_trace_chunk_status status;
+ size_t i, count;
+ int ret = 0;
+
+ ret = lttng_trace_chunk_delete_post_release_user(trace_chunk);
+ if (ret) {
+ goto end;
+ }
+
+ DBG("Trace chunk \"delete\" close command post-release (Owner)");
+
+ assert(trace_chunk->session_output_directory);
+ assert(trace_chunk->chunk_directory);
+
+ /* Remove empty directories. */
+ count = lttng_dynamic_pointer_array_get_count(
+ &trace_chunk->top_level_directories);
+
+ for (i = 0; i < count; i++) {
+ const char *top_level_name =
+ lttng_dynamic_pointer_array_get_pointer(
+ &trace_chunk->top_level_directories, i);
+
+ status = lttng_trace_chunk_remove_subdirectory_recursive(trace_chunk, top_level_name);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ERR("Error recursively removing subdirectory '%s' file when deleting chunk",
+ top_level_name);
+ ret = -1;
+ break;
+ }
+ }
+ if (!ret) {
+ lttng_directory_handle_put(trace_chunk->chunk_directory);
+ trace_chunk->chunk_directory = NULL;
+
+ if (trace_chunk->path && trace_chunk->path[0] != '\0') {
+ status = lttng_directory_handle_remove_subdirectory(
+ trace_chunk->session_output_directory,
+ trace_chunk->path);
+ if (status != LTTNG_TRACE_CHUNK_STATUS_OK) {
+ ERR("Error removing subdirectory '%s' file when deleting chunk",
+ trace_chunk->path);
+ ret = -1;
+ }
+ }
+ }
+ free(trace_chunk->path);
+ trace_chunk->path = NULL;
+end:
+ return ret;
+}
+
+/*
+ * For local files, session and consumer daemons all run the delete hook. The
+ * consumer daemons have the list of files to unlink, and technically the
+ * session daemon is the owner of the chunk. Unlink all files owned by each
+ * consumer daemon.
+ */
+static
+int lttng_trace_chunk_delete_post_release(
+ struct lttng_trace_chunk *trace_chunk)
+{
+ if (!trace_chunk->chunk_directory) {
+ return 0;
+ }
+
+ if (trace_chunk->mode.value == TRACE_CHUNK_MODE_OWNER) {
+ return lttng_trace_chunk_delete_post_release_owner(trace_chunk);
+ } else {
+ return lttng_trace_chunk_delete_post_release_user(trace_chunk);
+ }
+}
+
LTTNG_HIDDEN
enum lttng_trace_chunk_status lttng_trace_chunk_get_close_command(
struct lttng_trace_chunk *chunk,
*/
chunk->name = NULL;
chunk->path = NULL;
+ element->chunk.fd_tracker = chunk->fd_tracker;
element->chunk.in_registry_element = true;
end:
return element;
session_id, NULL);
}
+LTTNG_HIDDEN
unsigned int lttng_trace_chunk_registry_put_each_chunk(
- struct lttng_trace_chunk_registry *registry)
+ const struct lttng_trace_chunk_registry *registry)
{
struct cds_lfht_iter iter;
struct lttng_trace_chunk_registry_element *chunk_element;
projects / lttng-tools.git / blobdiff