From: Jens Axboe <jens.axboe@oracle.com>
Date: Wed, 4 Mar 2009 14:27:42 +0000 (+0100)
Subject: Realloc td->files to full size immediately
X-Git-Tag: fio-1.25~19
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=fc99bc0d82371cc704395a7718e78abd0e0d2709;p=fio.git

Realloc td->files to full size immediately

For adding many files, we do as many reallocs() as we have files. This is
slow, so do full allocs instead.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

diff --git a/filesetup.c b/filesetup.c
index 088b77c3..461f130c 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -714,10 +714,15 @@ int add_file(struct thread_data *td, const char *fname)
 		
 	f->fd = -1;
 
-	dprint(FD_FILE, "resize file array to %d files\n", cur_files + 1);
+	if (td->files_size <= td->files_index) {
+		int new_size = td->o.nr_files;
 
-	td->files = realloc(td->files, (cur_files + 1) * sizeof(f));
-	td->files[cur_files] = f;
+		dprint(FD_FILE, "resize file array to %d files\n", new_size);
+
+		td->files = realloc(td->files, new_size * sizeof(f));
+		td->files[cur_files] = f;
+		td->files_size = new_size;
+	}
 
 	/*
 	 * init function, io engine may not be loaded yet