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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2011-11-11 22:27:31 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2011-11-11 22:27:31 +0100
commit50fdfeebf52793d836937c9fe10e2c4e25f1e2d3 (patch)
tree705d4f7267647236f26cdaee6140b3d4ae7a0f06 /open_issues/xen_lseek/test-mach.c
parentf4c0e07a3c7d79544116ebd2ee817597ed70ef3d (diff)
parentbef3b8049a8bb5266b6d703e52f225599dead5b8 (diff)
Merge branch 'master' of flubber:~hurd-web/hurd-web
Diffstat (limited to 'open_issues/xen_lseek/test-mach.c')
-rw-r--r--open_issues/xen_lseek/test-mach.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/open_issues/xen_lseek/test-mach.c b/open_issues/xen_lseek/test-mach.c
new file mode 100644
index 00000000..90337346
--- /dev/null
+++ b/open_issues/xen_lseek/test-mach.c
@@ -0,0 +1,19 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <fcntl.h>
+#include <mach/mach.h>
+#define N 1000000
+int main(void) {
+ struct timeval tv1, tv2;
+ int i;
+ task_t task;
+ task = mach_task_self();
+ mach_port_urefs_t refs;
+ gettimeofday(&tv1, NULL);
+ for (i = 0; i < N; i++) {
+ mach_port_get_refs(task, task, MACH_PORT_RIGHT_RECEIVE, &refs);
+ }
+ gettimeofday(&tv2, NULL);
+ printf("%fµs\n", (float)((tv2.tv_sec-tv1.tv_sec) * 1000000 + tv2.tv_usec - tv1.tv_usec)/N);
+ return 0;
+}