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author | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-11-11 22:27:31 +0100 |
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committer | Samuel Thibault <samuel.thibault@ens-lyon.org> | 2011-11-11 22:27:31 +0100 |
commit | 50fdfeebf52793d836937c9fe10e2c4e25f1e2d3 (patch) | |
tree | 705d4f7267647236f26cdaee6140b3d4ae7a0f06 /open_issues/xen_lseek/test-mach.c | |
parent | f4c0e07a3c7d79544116ebd2ee817597ed70ef3d (diff) | |
parent | bef3b8049a8bb5266b6d703e52f225599dead5b8 (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.c | 19 |
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; +} |