From: Richard W.M. Jones <rich@annexia.org>
Date: Tue, 26 Aug 2008 08:16:01 +0000 (+0000)
Subject: Include benchmarks directory.
X-Git-Url: http://git.annexia.org/?p=ocaml-bitstring.git;a=commitdiff_plain;h=63ba7d45ef5b9ddbf375f7d730c5dbf71a7b9589

Include benchmarks directory.
---

diff --git a/MANIFEST b/MANIFEST
index 30cfd08..688dd07 100644
--- a/MANIFEST
+++ b/MANIFEST
@@ -1,4 +1,5 @@
 aclocal.m4
+benchmarks/parse_ext3_superblock.ml
 bitmatch.ml
 bitstring.ml
 bitstring.mli
diff --git a/benchmarks/parse_ext3_superblock.ml b/benchmarks/parse_ext3_superblock.ml
new file mode 100644
index 0000000..edda82f
--- /dev/null
+++ b/benchmarks/parse_ext3_superblock.ml
@@ -0,0 +1,73 @@
+(* Benchmark parsing of an ext3 superblock.
+ * $Id$
+ *)
+
+open Printf
+
+let bits = Bitstring.bitstring_of_file "examples/ext3_sb"
+
+let parse () =
+  bitmatch bits with
+  | { s_inodes_count : 32 : littleendian;	(* Inodes count *)
+      s_blocks_count : 32 : littleendian;	(* Blocks count *)
+      s_r_blocks_count : 32 : littleendian;	(* Reserved blocks count *)
+      s_free_blocks_count : 32 : littleendian;	(* Free blocks count *)
+      s_free_inodes_count : 32 : littleendian;	(* Free inodes count *)
+      s_first_data_block : 32 : littleendian;	(* First Data Block *)
+      s_log_block_size : 32 : littleendian;	(* Block size *)
+      s_log_frag_size : 32 : littleendian;	(* Fragment size *)
+      s_blocks_per_group : 32 : littleendian;	(* # Blocks per group *)
+      s_frags_per_group : 32 : littleendian;	(* # Fragments per group *)
+      s_inodes_per_group : 32 : littleendian;	(* # Inodes per group *)
+      s_mtime : 32 : littleendian;		(* Mount time *)
+      s_wtime : 32 : littleendian;		(* Write time *)
+      s_mnt_count : 16 : littleendian;		(* Mount count *)
+      s_max_mnt_count : 16 : littleendian;	(* Maximal mount count *)
+      0xef53 : 16 : littleendian;		(* Magic signature *)
+      s_state : 16 : littleendian;		(* File system state *)
+      s_errors : 16 : littleendian;		(* Behaviour when detecting errors *)
+      s_minor_rev_level : 16 : littleendian;	(* minor revision level *)
+      s_lastcheck : 32 : littleendian;		(* time of last check *)
+      s_checkinterval : 32 : littleendian;	(* max. time between checks *)
+      s_creator_os : 32 : littleendian;		(* OS *)
+      s_rev_level : 32 : littleendian;		(* Revision level *)
+      s_def_resuid : 16 : littleendian;		(* Default uid for reserved blocks *)
+      s_def_resgid : 16 : littleendian;		(* Default gid for reserved blocks *)
+      s_first_ino : 32 : littleendian;		(* First non-reserved inode *)
+      s_inode_size : 16 : littleendian;		(* size of inode structure *)
+      s_block_group_nr : 16 : littleendian;	(* block group # of this superblock *)
+      s_feature_compat : 32 : littleendian;	(* compatible feature set *)
+      s_feature_incompat : 32 : littleendian;	(* incompatible feature set *)
+      s_feature_ro_compat : 32 : littleendian;	(* readonly-compatible feature set *)
+      s_uuid : 128 : string;		        (* 128-bit uuid for volume *)
+      s_volume_name : 128 : string;	        (* volume name *)
+      s_last_mounted : 512 : string;	        (* directory where last mounted *)
+      s_algorithm_usage_bitmap : 32 : littleendian; (* For compression *)
+      s_prealloc_blocks : 8;	                (* Nr of blocks to try to preallocate*)
+      s_prealloc_dir_blocks : 8;	        (* Nr to preallocate for dirs *)
+      s_reserved_gdt_blocks : 16 : littleendian;(* Per group desc for online growth *)
+      s_journal_uuid : 128 : string;	        (* uuid of journal superblock *)
+      s_journal_inum : 32 : littleendian;	(* inode number of journal file *)
+      s_journal_dev : 32 : littleendian;	(* device number of journal file *)
+      s_last_orphan : 32 : littleendian;	(* start of list of inodes to delete *)
+      s_hash_seed0 : 32 : littleendian;		(* HTREE hash seed *)
+      s_hash_seed1 : 32 : littleendian;
+      s_hash_seed2 : 32 : littleendian;
+      s_hash_seed3 : 32 : littleendian;
+      s_def_hash_version : 8;	                (* Default hash version to use *)
+      s_reserved_char_pad : 8;
+      s_reserved_word_pad : 16 : littleendian;
+      s_default_mount_opts : 32 : littleendian;
+      s_first_meta_bg : 32 : littleendian;	(* First metablock block group *)
+      _ : 6080 : bitstring } ->                 (* Padding to the end of the block *)
+
+      ()
+
+  | { _ } ->
+    eprintf "not an ext3 superblock!\n%!";
+    exit 2
+
+let () =
+  for i = 0 to 2_000_000 do
+    parse ()
+  done