// Copyright (C) 2017-2018 Baidu, Inc. All Rights Reserved.
//
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// modification, are permitted provided that the following conditions
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//
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//  * Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in
//    the documentation and/or other materials provided with the
//    distribution.
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//    contributors may be used to endorse or promote products derived
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

use std::io::Error;
use libc::{self, c_int, clockid_t, timespec};

#[no_mangle]
pub extern "C" fn u_clock_gettime_ocall(error: * mut c_int, clk_id: clockid_t, tp: * mut timespec) -> c_int {
    let mut errno = 0;
    let ret = unsafe { libc::clock_gettime(clk_id, tp) };
    if ret < 0 {
        errno = Error::last_os_error().raw_os_error().unwrap_or(0);
    }
    if !error.is_null() {
        unsafe { *error = errno; }
    }
    ret
}