| ... | ... | @@ -677,94 +677,6 @@ fn setSockFlags(sock: socket_t, flags: u32) !void { |
| 677 | 677 | } |
| 678 | 678 | } |
| 679 | 679 | |
| 680 | | pub const EpollCreateError = error{ |
| 681 | | /// The per-user limit on the number of epoll instances imposed by |
| 682 | | /// /proc/sys/fs/epoll/max_user_instances was encountered. See epoll(7) for further |
| 683 | | /// details. |
| 684 | | /// Or, The per-process limit on the number of open file descriptors has been reached. |
| 685 | | ProcessFdQuotaExceeded, |
| 686 | | |
| 687 | | /// The system-wide limit on the total number of open files has been reached. |
| 688 | | SystemFdQuotaExceeded, |
| 689 | | |
| 690 | | /// There was insufficient memory to create the kernel object. |
| 691 | | SystemResources, |
| 692 | | } || UnexpectedError; |
| 693 | | |
| 694 | | pub fn epoll_create1(flags: u32) EpollCreateError!i32 { |
| 695 | | const rc = system.epoll_create1(flags); |
| 696 | | switch (errno(rc)) { |
| 697 | | .SUCCESS => return @intCast(rc), |
| 698 | | else => |err| return unexpectedErrno(err), |
| 699 | | |
| 700 | | .INVAL => unreachable, |
| 701 | | .MFILE => return error.ProcessFdQuotaExceeded, |
| 702 | | .NFILE => return error.SystemFdQuotaExceeded, |
| 703 | | .NOMEM => return error.SystemResources, |
| 704 | | } |
| 705 | | } |
| 706 | | |
| 707 | | pub const EpollCtlError = error{ |
| 708 | | /// op was EPOLL_CTL_ADD, and the supplied file descriptor fd is already registered |
| 709 | | /// with this epoll instance. |
| 710 | | FileDescriptorAlreadyPresentInSet, |
| 711 | | |
| 712 | | /// fd refers to an epoll instance and this EPOLL_CTL_ADD operation would result in a |
| 713 | | /// circular loop of epoll instances monitoring one another. |
| 714 | | OperationCausesCircularLoop, |
| 715 | | |
| 716 | | /// op was EPOLL_CTL_MOD or EPOLL_CTL_DEL, and fd is not registered with this epoll |
| 717 | | /// instance. |
| 718 | | FileDescriptorNotRegistered, |
| 719 | | |
| 720 | | /// There was insufficient memory to handle the requested op control operation. |
| 721 | | SystemResources, |
| 722 | | |
| 723 | | /// The limit imposed by /proc/sys/fs/epoll/max_user_watches was encountered while |
| 724 | | /// trying to register (EPOLL_CTL_ADD) a new file descriptor on an epoll instance. |
| 725 | | /// See epoll(7) for further details. |
| 726 | | UserResourceLimitReached, |
| 727 | | |
| 728 | | /// The target file fd does not support epoll. This error can occur if fd refers to, |
| 729 | | /// for example, a regular file or a directory. |
| 730 | | FileDescriptorIncompatibleWithEpoll, |
| 731 | | } || UnexpectedError; |
| 732 | | |
| 733 | | pub fn epoll_ctl(epfd: i32, op: u32, fd: i32, event: ?*system.epoll_event) EpollCtlError!void { |
| 734 | | const rc = system.epoll_ctl(epfd, op, fd, event); |
| 735 | | switch (errno(rc)) { |
| 736 | | .SUCCESS => return, |
| 737 | | else => |err| return unexpectedErrno(err), |
| 738 | | |
| 739 | | .BADF => unreachable, // always a race condition if this happens |
| 740 | | .EXIST => return error.FileDescriptorAlreadyPresentInSet, |
| 741 | | .INVAL => unreachable, |
| 742 | | .LOOP => return error.OperationCausesCircularLoop, |
| 743 | | .NOENT => return error.FileDescriptorNotRegistered, |
| 744 | | .NOMEM => return error.SystemResources, |
| 745 | | .NOSPC => return error.UserResourceLimitReached, |
| 746 | | .PERM => return error.FileDescriptorIncompatibleWithEpoll, |
| 747 | | } |
| 748 | | } |
| 749 | | |
| 750 | | /// Waits for an I/O event on an epoll file descriptor. |
| 751 | | /// Returns the number of file descriptors ready for the requested I/O, |
| 752 | | /// or zero if no file descriptor became ready during the requested timeout milliseconds. |
| 753 | | pub fn epoll_wait(epfd: i32, events: []system.epoll_event, timeout: i32) usize { |
| 754 | | while (true) { |
| 755 | | // TODO get rid of the @intCast |
| 756 | | const rc = system.epoll_wait(epfd, events.ptr, @intCast(events.len), timeout); |
| 757 | | switch (errno(rc)) { |
| 758 | | .SUCCESS => return @intCast(rc), |
| 759 | | .INTR => continue, |
| 760 | | .BADF => unreachable, |
| 761 | | .FAULT => unreachable, |
| 762 | | .INVAL => unreachable, |
| 763 | | else => unreachable, |
| 764 | | } |
| 765 | | } |
| 766 | | } |
| 767 | | |
| 768 | 680 | pub const EventFdError = error{ |
| 769 | 681 | SystemResources, |
| 770 | 682 | ProcessFdQuotaExceeded, |
Andrew Kelley <andrew@ziglang.org> 2026-01-07 14:43:37-08:00
lib