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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2011-11-02 12:48:18 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2011-11-05 14:50:34 +0100
commitad0f2aa843232649166e0252e28b96c1736c5082 (patch)
treef3c482bacf328bf810674363f303f2de2cd27b50 /open_issues/performance/io_system/test-lseek.c
parentb8e9b554abc5281a7f532cea31cbd835f87ee25d (diff)
Add lseek/mach testcases
Diffstat (limited to 'open_issues/performance/io_system/test-lseek.c')
-rw-r--r--open_issues/performance/io_system/test-lseek.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/open_issues/performance/io_system/test-lseek.c b/open_issues/performance/io_system/test-lseek.c
new file mode 100644
index 00000000..691e9d07
--- /dev/null
+++ b/open_issues/performance/io_system/test-lseek.c
@@ -0,0 +1,16 @@
+#include <stdio.h>
+#include <math.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/time.h>
+int main(void) {
+ int fd = open("test.c", O_RDONLY);
+ struct timeval tv1, tv2;
+ int i;
+ gettimeofday(&tv1, NULL);
+ for (i = 0; i < 100000; i++)
+ lseek(fd, 0, SEEK_CUR);
+ gettimeofday(&tv2, NULL);
+ printf("%07lu\n", (tv2.tv_sec-tv1.tv_sec) * 1000000 + tv2.tv_usec - tv1.tv_usec);
+ return 0;
+}