WT-2330: in-memory configurations should not create on-disk collection files

Create a pluggable OS layer, add in-memory version so in-memory
configurations don't create on-disk files.

Notes:

The WiredTiger library no longer uses FILE * objects, the file descriptor
and stream functions now use the same open and close functions, and both
have a WT_FH handle.

The sync/async versions of __wt_fsync have been merged, there's now a
boolean flag that indicates wait/no-wait on the flush.

The transaction log's print-log function no longer supports unspecified
handles, output is always to stdout (which the wt utility redirects into
another file as needed).

1 files changed, 7 insertions, 15 deletions

diff --git a/src/conn/conn_open.c b/src/conn/conn_open.c
index 58577b4587d..f682ab1ce77 100644
--- a/src/conn/conn_open.c
+++ b/src/conn/conn_open.c
@@ -76,7 +76,6 @@ __wt_connection_close(WT_CONNECTION_IMPL *conn)
 	WT_CONNECTION *wt_conn;
 	WT_DECL_RET;
 	WT_DLH *dlh;
-	WT_FH *fh;
 	WT_SESSION_IMPL *s, *session;
 	WT_TXN_GLOBAL *txn_global;
 	u_int i;
@@ -150,20 +149,6 @@ __wt_connection_close(WT_CONNECTION_IMPL *conn)
 	WT_TRET(__wt_conn_remove_encryptor(session));
 	WT_TRET(__wt_conn_remove_extractor(session));
 
-	/*
-	 * Complain if files weren't closed, ignoring the lock file, we'll
-	 * close it in a minute.
-	 */
-	TAILQ_FOREACH(fh, &conn->fhqh, q) {
-		if (fh == conn->lock_fh)
-			continue;
-
-		__wt_errx(session,
-		    "Connection has open file handles: %s", fh->name);
-		WT_TRET(__wt_close(session, &fh));
-		fh = TAILQ_FIRST(&conn->fhqh);
-	}
-
 	/* Disconnect from shared cache - must be before cache destroy. */
 	WT_TRET(__wt_conn_cache_pool_destroy(session));
 
@@ -182,6 +167,13 @@ __wt_connection_close(WT_CONNECTION_IMPL *conn)
 		WT_TRET(__wt_dlclose(session, dlh));
 	}
 
+	/* Close the lock file, opening up the database to other connections. */
+	if (conn->lock_fh != NULL)
+		WT_TRET(__wt_close(session, &conn->lock_fh));
+
+	/* Close any file handles left open. */
+	WT_TRET(__wt_close_connection_close(session));
+
 	/*
 	 * Close the internal (default) session, and switch back to the dummy
 	 * session in case of any error messages from the remaining operations