-- --
-- B o d y --
-- --
--- Copyright (C) 2002-2008, AdaCore --
+-- Copyright (C) 2002-2009, 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- --
package body GNAT.Sockets.Thin is
- Non_Blocking_Sockets : constant Fd_Set_Access :=
- New_Socket_Set (No_Fd_Set_Access);
+ Non_Blocking_Sockets : aliased Fd_Set;
-- When this package is initialized with Process_Blocking_IO set
-- to True, sockets are set in non-blocking mode to avoid blocking
-- the whole process when a thread wants to perform a blocking IO
Namelen : C.int) return C.int;
pragma Import (C, Syscall_Connect, "connect");
- function Syscall_Ioctl
- (S : C.int;
- Req : C.int;
- Arg : Int_Access) return C.int;
- pragma Import (C, Syscall_Ioctl, "ioctl");
-
function Syscall_Recv
(S : C.int;
Msg : System.Address;
Msg : System.Address;
Len : C.int;
Flags : C.int;
- From : Sockaddr_In_Access;
+ From : System.Address;
Fromlen : not null access C.int) return C.int;
pragma Import (C, Syscall_Recvfrom, "recvfrom");
+ function Syscall_Recvmsg
+ (S : C.int;
+ Msg : System.Address;
+ Flags : C.int) return C.int;
+ pragma Import (C, Syscall_Recvmsg, "recvmsg");
+
+ function Syscall_Sendmsg
+ (S : C.int;
+ Msg : System.Address;
+ Flags : C.int) return C.int;
+ pragma Import (C, Syscall_Sendmsg, "sendmsg");
+
function Syscall_Send
(S : C.int;
Msg : System.Address;
Msg : System.Address;
Len : C.int;
Flags : C.int;
- To : Sockaddr_In_Access;
+ To : System.Address;
Tolen : C.int) return C.int;
pragma Import (C, Syscall_Sendto, "sendto");
Protocol : C.int) return C.int;
pragma Import (C, Syscall_Socket, "socket");
- function Non_Blocking_Socket (S : C.int) return Boolean;
+ function Non_Blocking_Socket (S : C.int) return Boolean;
procedure Set_Non_Blocking_Socket (S : C.int; V : Boolean);
--------------
and then R /= Failure
then
-- A socket inherits the properties of its server especially
- -- the FIONBIO flag. Do not use C_Ioctl as this subprogram
+ -- the FIONBIO flag. Do not use Socket_Ioctl as this subprogram
-- tracks sockets set in non-blocking mode by user.
Set_Non_Blocking_Socket (R, Non_Blocking_Socket (S));
- Res := Syscall_Ioctl (R, SOSC.FIONBIO, Val'Unchecked_Access);
+ Res := C_Ioctl (R, SOSC.FIONBIO, Val'Access);
-- Is it OK to ignore result ???
end if;
end if;
declare
- WSet : Fd_Set_Access;
+ WSet : aliased Fd_Set;
Now : aliased Timeval;
-
begin
- WSet := New_Socket_Set (No_Fd_Set_Access);
-
+ Reset_Socket_Set (WSet'Access);
loop
- Insert_Socket_In_Set (WSet, S);
+ Insert_Socket_In_Set (WSet'Access, S);
Now := Immediat;
Res := C_Select
(S + 1,
No_Fd_Set_Access,
- WSet,
+ WSet'Access,
No_Fd_Set_Access,
Now'Unchecked_Access);
exit when Res > 0;
if Res = Failure then
- Free_Socket_Set (WSet);
return Res;
end if;
delay Quantum;
end loop;
-
- Free_Socket_Set (WSet);
end;
Res := Syscall_Connect (S, Name, Namelen);
end if;
end C_Connect;
- -------------
- -- C_Ioctl --
- -------------
+ ------------------
+ -- Socket_Ioctl --
+ ------------------
- function C_Ioctl
- (S : C.int;
- Req : C.int;
- Arg : Int_Access) return C.int
+ function Socket_Ioctl
+ (S : C.int;
+ Req : C.int;
+ Arg : access C.int) return C.int
is
begin
- if not SOSC.Thread_Blocking_IO
- and then Req = SOSC.FIONBIO
- then
+ if not SOSC.Thread_Blocking_IO and then Req = SOSC.FIONBIO then
if Arg.all /= 0 then
Set_Non_Blocking_Socket (S, True);
end if;
end if;
- return Syscall_Ioctl (S, Req, Arg);
- end C_Ioctl;
+ return C_Ioctl (S, Req, Arg);
+ end Socket_Ioctl;
------------
-- C_Recv --
Msg : System.Address;
Len : C.int;
Flags : C.int;
- From : Sockaddr_In_Access;
+ From : System.Address;
Fromlen : not null access C.int) return C.int
is
Res : C.int;
return Res;
end C_Recvfrom;
- ------------
- -- C_Send --
- ------------
+ ---------------
+ -- C_Recvmsg --
+ ---------------
- function C_Send
+ function C_Recvmsg
(S : C.int;
Msg : System.Address;
- Len : C.int;
- Flags : C.int) return C.int
+ Flags : C.int) return ssize_t
is
Res : C.int;
begin
loop
- Res := Syscall_Send (S, Msg, Len, Flags);
+ Res := Syscall_Recvmsg (S, Msg, Flags);
exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
delay Quantum;
end loop;
- return Res;
- end C_Send;
+ return ssize_t (Res);
+ end C_Recvmsg;
+
+ ---------------
+ -- C_Sendmsg --
+ ---------------
+
+ function C_Sendmsg
+ (S : C.int;
+ Msg : System.Address;
+ Flags : C.int) return ssize_t
+ is
+ Res : C.int;
+
+ begin
+ loop
+ Res := Syscall_Sendmsg (S, Msg, Flags);
+ exit when SOSC.Thread_Blocking_IO
+ or else Res /= Failure
+ or else Non_Blocking_Socket (S)
+ or else Errno /= SOSC.EWOULDBLOCK;
+ delay Quantum;
+ end loop;
+
+ return ssize_t (Res);
+ end C_Sendmsg;
--------------
-- C_Sendto --
Msg : System.Address;
Len : C.int;
Flags : C.int;
- To : Sockaddr_In_Access;
+ To : System.Address;
Tolen : C.int) return C.int
is
+ use System;
+
Res : C.int;
begin
loop
- Res := Syscall_Sendto (S, Msg, Len, Flags, To, Tolen);
+ if To = Null_Address then
+
+ -- In violation of the standard sockets API, VxWorks does not
+ -- support sendto(2) calls on connected sockets with a null
+ -- destination address, so use send(2) instead in that case.
+
+ Res := Syscall_Send (S, Msg, Len, Flags);
+
+ -- Normal case where destination address is non-null
+
+ else
+ Res := Syscall_Sendto (S, Msg, Len, Flags, To, Tolen);
+ end if;
+
exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
if not SOSC.Thread_Blocking_IO
and then R /= Failure
then
- -- Do not use C_Ioctl as this subprogram tracks sockets set
+ -- Do not use Socket_Ioctl as this subprogram tracks sockets set
-- in non-blocking mode by user.
- Res := Syscall_Ioctl (R, SOSC.FIONBIO, Val'Unchecked_Access);
+ Res := C_Ioctl (R, SOSC.FIONBIO, Val'Access);
-- Is it OK to ignore result ???
Set_Non_Blocking_Socket (R, False);
end if;
procedure Initialize is
begin
- null;
+ Reset_Socket_Set (Non_Blocking_Sockets'Access);
end Initialize;
-------------------------
R : Boolean;
begin
Task_Lock.Lock;
- R := (Is_Socket_In_Set (Non_Blocking_Sockets, S) /= 0);
+ R := (Is_Socket_In_Set (Non_Blocking_Sockets'Access, S) /= 0);
Task_Lock.Unlock;
return R;
end Non_Blocking_Socket;
begin
Task_Lock.Lock;
if V then
- Insert_Socket_In_Set (Non_Blocking_Sockets, S);
+ Insert_Socket_In_Set (Non_Blocking_Sockets'Access, S);
else
- Remove_Socket_From_Set (Non_Blocking_Sockets, S);
+ Remove_Socket_From_Set (Non_Blocking_Sockets'Access, S);
end if;
Task_Lock.Unlock;
function Socket_Error_Message
(Errno : Integer) return C.Strings.chars_ptr
- is
- use type Interfaces.C.Strings.chars_ptr;
-
- C_Msg : C.Strings.chars_ptr;
-
- begin
- C_Msg := C_Strerror (C.int (Errno));
-
- if C_Msg = C.Strings.Null_Ptr then
- return Unknown_System_Error;
-
- else
- return C_Msg;
- end if;
- end Socket_Error_Message;
+ is separate;
end GNAT.Sockets.Thin;
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