| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- G N A T . S O C K E T S . P O L L . W A I T -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 2020-2021, AdaCore -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. -- |
| -- -- |
| -- As a special exception under Section 7 of GPL version 3, you are granted -- |
| -- additional permissions described in the GCC Runtime Library Exception, -- |
| -- version 3.1, as published by the Free Software Foundation. -- |
| -- -- |
| -- You should have received a copy of the GNU General Public License and -- |
| -- a copy of the GCC Runtime Library Exception along with this program; -- |
| -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- |
| -- <http://www.gnu.org/licenses/>. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Wait implementation on top of native poll call |
| -- |
| -- This submodule can be used on systems where poll system call is natively |
| -- supported. Microsoft Windows supports WSAPoll system call from Vista |
| -- version and this submodule can be used on such Windows versions too, the |
| -- System.OS_Constants.Poll_Linkname constant defines appropriate link name |
| -- for Windows. But we do not use WSAPoll in GNAT.Sockets.Poll implementation |
| -- for now because it is much slower than select system call, at least in |
| -- Windows version 10.0.18363.1016. |
| |
| separate (GNAT.Sockets.Poll) |
| |
| procedure Wait |
| (Fds : in out Set; Timeout : Interfaces.C.int; Result : out Integer) |
| is |
| |
| function Poll |
| (Fds : Poll_Set; |
| Nfds : nfds_t; |
| Timeout : Interfaces.C.int) return Integer |
| with Import, Convention => Stdcall, External_Name => SOC.Poll_Linkname; |
| |
| begin |
| Result := Poll (Fds.Fds, nfds_t (Fds.Length), Timeout); |
| end Wait; |
