From 4cc3f682fb57a920e3cc14e99323d66e380c1ee7 Mon Sep 17 00:00:00 2001 From: Thomas Schwinge Date: Sat, 5 Nov 2011 23:19:34 +0100 Subject: open_issues/performance/io_system/binutils_ld_64ksec: Move Xen lseek stuff... open_issues/xen_lseek: ... here. --- open_issues/xen_lseek/test-mach.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 open_issues/xen_lseek/test-mach.c (limited to 'open_issues/xen_lseek/test-mach.c') 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 +#include +#include +#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; +} -- cgit v1.2.3