From 4f670845ff9ab6c48bcb5f7bf4d4ef6dc3c3064b Mon Sep 17 00:00:00 2001 From: manuel Date: Tue, 27 Mar 2012 11:51:08 +0200 Subject: reorganize file structure to match the upstream requirements --- tests/vm/child-sort.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 tests/vm/child-sort.c (limited to 'tests/vm/child-sort.c') diff --git a/tests/vm/child-sort.c b/tests/vm/child-sort.c new file mode 100644 index 0000000..dff2c77 --- /dev/null +++ b/tests/vm/child-sort.c @@ -0,0 +1,42 @@ +/* Reads a 128 kB file into static data and "sorts" the bytes in + it, using counting sort, a single-pass algorithm. The sorted + data is written back to the same file in-place. */ + +#include +#include +#include "tests/lib.h" +#include "tests/main.h" + +const char *test_name = "child-sort"; + +unsigned char buf[128 * 1024]; +size_t histogram[256]; + +int +main (int argc UNUSED, char *argv[]) +{ + int handle; + unsigned char *p; + size_t size; + size_t i; + + quiet = true; + + CHECK ((handle = open (argv[1])) > 1, "open \"%s\"", argv[1]); + + size = read (handle, buf, sizeof buf); + for (i = 0; i < size; i++) + histogram[buf[i]]++; + p = buf; + for (i = 0; i < sizeof histogram / sizeof *histogram; i++) + { + size_t j = histogram[i]; + while (j-- > 0) + *p++ = i; + } + seek (handle, 0); + write (handle, buf, size); + close (handle); + + return 123; +} -- cgit v1.2.3