authorgravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2017-11-10 18:25:32-05:00
committergravatar for andrew@ziglang.orgAndrew Kelley <andrew@ziglang.org> 2017-11-10 18:25:32-05:00
logca87f55a7b8416e0f0922af7178a8774e81eba97
treecbebd1f95c5873199d648ea4ba6c214e781fcf2c
parent1403748fd8f923ac4b23bb19d02aa44fd739933d
parent5ae53dacfb3e66fd626aa72a900b6b067b9ac19e

Merge branch 'bscheinman-linux_timer'

2 files changed, 117 insertions(+), 0 deletions(-)

std/os/linux.zig+79
...@@ -328,6 +328,45 @@ pub const TIOCGPKT = 0x80045438;...@@ -328,6 +328,45 @@ pub const TIOCGPKT = 0x80045438;
328pub const TIOCGPTLCK = 0x80045439;328pub const TIOCGPTLCK = 0x80045439;
329pub const TIOCGEXCL = 0x80045440;329pub const TIOCGEXCL = 0x80045440;
330330
331pub const EPOLL_CTL_ADD = 1;
332pub const EPOLL_CTL_DEL = 2;
333pub const EPOLL_CTL_MOD = 3;
334
335pub const EPOLLIN = 0x001;
336pub const EPOLLPRI = 0x002;
337pub const EPOLLOUT = 0x004;
338pub const EPOLLRDNORM = 0x040;
339pub const EPOLLRDBAND = 0x080;
340pub const EPOLLWRNORM = 0x100;
341pub const EPOLLWRBAND = 0x200;
342pub const EPOLLMSG = 0x400;
343pub const EPOLLERR = 0x008;
344pub const EPOLLHUP = 0x010;
345pub const EPOLLRDHUP = 0x2000;
346pub const EPOLLEXCLUSIVE = (u32(1) << 28);
347pub const EPOLLWAKEUP = (u32(1) << 29);
348pub const EPOLLONESHOT = (u32(1) << 30);
349pub const EPOLLET = (u32(1) << 31);
350
351pub const CLOCK_REALTIME = 0;
352pub const CLOCK_MONOTONIC = 1;
353pub const CLOCK_PROCESS_CPUTIME_ID = 2;
354pub const CLOCK_THREAD_CPUTIME_ID = 3;
355pub const CLOCK_MONOTONIC_RAW = 4;
356pub const CLOCK_REALTIME_COARSE = 5;
357pub const CLOCK_MONOTONIC_COARSE = 6;
358pub const CLOCK_BOOTTIME = 7;
359pub const CLOCK_REALTIME_ALARM = 8;
360pub const CLOCK_BOOTTIME_ALARM = 9;
361pub const CLOCK_SGI_CYCLE = 10;
362pub const CLOCK_TAI = 11;
363
364pub const TFD_NONBLOCK = O_NONBLOCK;
365pub const TFD_CLOEXEC = O_CLOEXEC;
366
367pub const TFD_TIMER_ABSTIME = 1;
368pub const TFD_TIMER_CANCEL_ON_SET = (1 << 1);
369
331fn unsigned(s: i32) -> u32 { @bitCast(u32, s) }370fn unsigned(s: i32) -> u32 { @bitCast(u32, s) }
332fn signed(s: u32) -> i32 { @bitCast(i32, s) }371fn signed(s: u32) -> i32 { @bitCast(i32, s) }
333pub fn WEXITSTATUS(s: i32) -> i32 { signed((unsigned(s) & 0xff00) >> 8) }372pub fn WEXITSTATUS(s: i32) -> i32 { signed((unsigned(s) & 0xff00) >> 8) }
...@@ -734,3 +773,43 @@ pub const timespec = arch.timespec;...@@ -734,3 +773,43 @@ pub const timespec = arch.timespec;
734pub fn fstat(fd: i32, stat_buf: &Stat) -> usize {773pub fn fstat(fd: i32, stat_buf: &Stat) -> usize {
735 arch.syscall2(arch.SYS_fstat, usize(fd), @ptrToInt(stat_buf))774 arch.syscall2(arch.SYS_fstat, usize(fd), @ptrToInt(stat_buf))
736}775}
776
777pub const epoll_data = u64;
778
779pub const epoll_event = extern struct {
780 events: u32,
781 data: epoll_data
782};
783
784pub fn epoll_create() -> usize {
785 arch.syscall1(arch.SYS_epoll_create, usize(1))
786}
787
788pub fn epoll_ctl(epoll_fd: i32, op: i32, fd: i32, ev: &epoll_event) -> usize {
789 arch.syscall4(arch.SYS_epoll_ctl, usize(epoll_fd), usize(op), usize(fd), @ptrToInt(ev))
790}
791
792pub fn epoll_wait(epoll_fd: i32, events: &epoll_event, maxevents: i32, timeout: i32) -> usize {
793 arch.syscall4(arch.SYS_epoll_wait, usize(epoll_fd), @ptrToInt(events), usize(maxevents), usize(timeout))
794}
795
796pub fn timerfd_create(clockid: i32, flags: u32) -> usize {
797 arch.syscall2(arch.SYS_timerfd_create, usize(clockid), usize(flags))
798}
799
800pub const itimerspec = extern struct {
801 it_interval: timespec,
802 it_value: timespec
803};
804
805pub fn timerfd_gettime(fd: i32, curr_value: &itimerspec) -> usize {
806 arch.syscall2(arch.SYS_timerfd_gettime, usize(fd), @ptrToInt(curr_value))
807}
808
809pub fn timerfd_settime(fd: i32, flags: u32, new_value: &const itimerspec, old_value: ?&itimerspec) -> usize {
810 arch.syscall4(arch.SYS_timerfd_settime, usize(fd), usize(flags), @ptrToInt(new_value), @ptrToInt(old_value))
811}
812
813test "import linux_test" {
814 _ = @import("linux_test.zig");
815}
std/os/linux_test.zig created+38
...@@ -0,0 +1,38 @@
1const std = @import("std");
2const linux = std.os.linux;
3const assert = std.debug.assert;
4
5test "timer" {
6 const epoll_fd = linux.epoll_create();
7 var err = linux.getErrno(epoll_fd);
8 assert(err == 0);
9
10 const timer_fd = linux.timerfd_create(linux.CLOCK_MONOTONIC, 0);
11 assert(linux.getErrno(timer_fd) == 0);
12
13 const time_interval = linux.timespec {
14 .tv_sec = 0,
15 .tv_nsec = 2000000
16 };
17
18 const new_time = linux.itimerspec {
19 .it_interval = time_interval,
20 .it_value = time_interval
21 };
22
23 err = linux.timerfd_settime(i32(timer_fd), 0, &new_time, null);
24 assert(err == 0);
25
26 var event = linux.epoll_event {
27 .events = linux.EPOLLIN | linux.EPOLLOUT | linux.EPOLLET,
28 .data = 0
29 };
30
31 err = linux.epoll_ctl(i32(epoll_fd), linux.EPOLL_CTL_ADD, i32(timer_fd), &event);
32 assert(err == 0);
33
34 const events_one: linux.epoll_event = undefined;
35 var events = []linux.epoll_event{events_one} ** 8;
36
37 err = linux.epoll_wait(i32(epoll_fd), &events[0], 8, -1);
38}