-- --
-- B o d y --
-- --
--- Copyright (C) 2001-2005, AdaCore --
+-- Copyright (C) 2001-2009, 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- --
-- --
------------------------------------------------------------------------------
--- Temporary version for Alpha/VMS
+-- This is the version for OpenVMS
with GNAT.OS_Lib; use GNAT.OS_Lib;
with GNAT.Task_Lock;
package body GNAT.Sockets.Thin is
- Non_Blocking_Sockets : constant Fd_Set_Access :=
- New_Socket_Set (No_Socket_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
- -- operation. But the user can also set a socket in non-blocking
- -- mode by purpose. In order to make a difference between these
- -- two situations, we track the origin of non-blocking mode in
- -- Non_Blocking_Sockets. If S is in Non_Blocking_Sockets, it has
- -- been set in non-blocking mode by the user.
+ type VMS_Msghdr is new Msghdr;
+ pragma Pack (VMS_Msghdr);
+ -- On VMS (unlike other platforms), struct msghdr is packed, so a specific
+ -- derived type is required.
- Quantum : constant Duration := 0.2;
- -- When Thread_Blocking_IO is False, we set sockets in
- -- non-blocking mode and we spend a period of time Quantum between
- -- two attempts on a blocking operation.
+ 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 operation. But the user can
+ -- also set a socket in non-blocking mode by purpose. In order to make a
+ -- difference between these two situations, we track the origin of
+ -- non-blocking mode in Non_Blocking_Sockets. Note that if S is in
+ -- Non_Blocking_Sockets, it has been set in non-blocking mode by the user.
- Thread_Blocking_IO : Boolean := True;
+ Quantum : constant Duration := 0.2;
+ -- When SOSC.Thread_Blocking_IO is False, we set sockets to non-blocking
+ -- mode and we spend a period of time Quantum between two attempts on a
+ -- blocking operation.
Unknown_System_Error : constant C.Strings.chars_ptr :=
C.Strings.New_String ("Unknown system error");
function Syscall_Accept
(S : C.int;
Addr : System.Address;
- Addrlen : access C.int) return C.int;
+ Addrlen : not null access C.int) return C.int;
pragma Import (C, Syscall_Accept, "accept");
function Syscall_Connect
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;
- Fromlen : access C.int) return C.int;
+ From : System.Address;
+ Fromlen : not null access C.int) return C.int;
pragma Import (C, Syscall_Recvfrom, "recvfrom");
- function Syscall_Send
+ function Syscall_Recvmsg
(S : C.int;
Msg : System.Address;
- Len : C.int;
Flags : C.int) return C.int;
- pragma Import (C, Syscall_Send, "send");
+ 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_Sendto
(S : C.int;
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");
(Domain, Typ, 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);
--------------
function C_Accept
(S : C.int;
Addr : System.Address;
- Addrlen : access C.int) return C.int
+ Addrlen : not null access C.int) return C.int
is
R : C.int;
Val : aliased C.int := 1;
begin
loop
R := Syscall_Accept (S, Addr, Addrlen);
- exit when Thread_Blocking_IO
+ exit when SOSC.Thread_Blocking_IO
or else R /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EWOULDBLOCK;
+ or else Errno /= SOSC.EWOULDBLOCK;
delay Quantum;
end loop;
- if not Thread_Blocking_IO
+ if not SOSC.Thread_Blocking_IO
and then R /= Failure
then
- -- A socket inherits the properties ot its server especially
- -- the FIONBIO flag. Do not use C_Ioctl as this subprogram
+ -- A socket inherits the properties of its server, especially
+ -- 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));
- Discard := Syscall_Ioctl (R, Constants.FIONBIO, Val'Unchecked_Access);
+ Discard := C_Ioctl (R, SOSC.FIONBIO, Val'Access);
end if;
return R;
begin
Res := Syscall_Connect (S, Name, Namelen);
- if Thread_Blocking_IO
+ if SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EINPROGRESS
+ or else Errno /= SOSC.EINPROGRESS
then
return Res;
end if;
declare
- WSet : Fd_Set_Access;
+ WSet : aliased Fd_Set;
Now : aliased Timeval;
begin
- WSet := New_Socket_Set (No_Socket_Set);
+ 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,
- WSet,
- No_Fd_Set,
+ No_Fd_Set_Access,
+ 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);
- if Res = Failure
- and then Errno = Constants.EISCONN
- then
- return Thin.Success;
+ if Res = Failure and then Errno = SOSC.EISCONN then
+ return Thin_Common.Success;
else
return Res;
end if;
end C_Connect;
- -------------
- -- C_Ioctl --
- -------------
+ ------------------
+ -- Socket_Ioctl --
+ ------------------
- function C_Ioctl
+ function Socket_Ioctl
(S : C.int;
Req : C.int;
- Arg : Int_Access) return C.int
+ Arg : access C.int) return C.int
is
begin
- if not Thread_Blocking_IO
- and then Req = Constants.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 --
begin
loop
Res := Syscall_Recv (S, Msg, Len, Flags);
- exit when Thread_Blocking_IO
+ exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EWOULDBLOCK;
+ or else Errno /= SOSC.EWOULDBLOCK;
delay Quantum;
end loop;
Msg : System.Address;
Len : C.int;
Flags : C.int;
- From : Sockaddr_In_Access;
- Fromlen : access C.int) return C.int
+ From : System.Address;
+ Fromlen : not null access C.int) return C.int
is
Res : C.int;
begin
loop
Res := Syscall_Recvfrom (S, Msg, Len, Flags, From, Fromlen);
- exit when Thread_Blocking_IO
+ exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EWOULDBLOCK;
+ or else Errno /= SOSC.EWOULDBLOCK;
delay Quantum;
end loop;
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;
+ GNAT_Msg : Msghdr;
+ for GNAT_Msg'Address use Msg;
+ pragma Import (Ada, GNAT_Msg);
+
+ VMS_Msg : aliased VMS_Msghdr := VMS_Msghdr (GNAT_Msg);
+
begin
loop
- Res := Syscall_Send (S, Msg, Len, Flags);
- exit when Thread_Blocking_IO
+ Res := Syscall_Recvmsg (S, VMS_Msg'Address, Flags);
+ exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EWOULDBLOCK;
+ or else Errno /= SOSC.EWOULDBLOCK;
delay Quantum;
end loop;
- return Res;
- end C_Send;
+ GNAT_Msg := Msghdr (VMS_Msg);
+
+ 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;
+
+ GNAT_Msg : Msghdr;
+ for GNAT_Msg'Address use Msg;
+ pragma Import (Ada, GNAT_Msg);
+
+ VMS_Msg : aliased VMS_Msghdr := VMS_Msghdr (GNAT_Msg);
+
+ begin
+ loop
+ Res := Syscall_Sendmsg (S, VMS_Msg'Address, 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;
+
+ GNAT_Msg := Msghdr (VMS_Msg);
+
+ 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
Res : C.int;
begin
loop
Res := Syscall_Sendto (S, Msg, Len, Flags, To, Tolen);
- exit when Thread_Blocking_IO
+ exit when SOSC.Thread_Blocking_IO
or else Res /= Failure
or else Non_Blocking_Socket (S)
- or else Errno /= Constants.EWOULDBLOCK;
+ or else Errno /= SOSC.EWOULDBLOCK;
delay Quantum;
end loop;
begin
R := Syscall_Socket (Domain, Typ, Protocol);
- if not Thread_Blocking_IO
+ 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.
- Discard := Syscall_Ioctl (R, Constants.FIONBIO, Val'Unchecked_Access);
+ Discard := C_Ioctl (R, SOSC.FIONBIO, Val'Access);
Set_Non_Blocking_Socket (R, False);
end if;
null;
end Finalize;
+ -------------------------
+ -- Host_Error_Messages --
+ -------------------------
+
+ package body Host_Error_Messages is separate;
+
----------------
-- Initialize --
----------------
- procedure Initialize (Process_Blocking_IO : Boolean) is
+ procedure Initialize is
begin
- Thread_Blocking_IO := not Process_Blocking_IO;
+ 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;
- -----------------
- -- Set_Address --
- -----------------
-
- procedure Set_Address (Sin : Sockaddr_In_Access; Address : In_Addr) is
- begin
- Sin.Sin_Addr := Address;
- end Set_Address;
-
- ----------------
- -- Set_Family --
- ----------------
-
- procedure Set_Family (Sin : Sockaddr_In_Access; Family : C.int) is
- begin
- Sin.Sin_Family := C.unsigned_short (Family);
- end Set_Family;
-
- ----------------
- -- Set_Length --
- ----------------
-
- procedure Set_Length (Sin : Sockaddr_In_Access; Len : C.int) is
- pragma Unreferenced (Sin);
- pragma Unreferenced (Len);
- begin
- null;
- end Set_Length;
-
-----------------------------
-- Set_Non_Blocking_Socket --
-----------------------------
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;
end Set_Non_Blocking_Socket;
- --------------
- -- Set_Port --
- --------------
+ --------------------
+ -- Signalling_Fds --
+ --------------------
- procedure Set_Port (Sin : Sockaddr_In_Access; Port : C.unsigned_short) is
- begin
- Sin.Sin_Port := Port;
- end Set_Port;
+ package body Signalling_Fds is separate;
--------------------------
-- Socket_Error_Message --
end if;
end Socket_Error_Message;
- -------------
- -- C_Readv --
- -------------
-
- function C_Readv
- (Fd : C.int;
- Iov : System.Address;
- Iovcnt : C.int) return C.int
- is
- Res : C.int;
- Count : C.int := 0;
-
- Iovec : array (0 .. Iovcnt - 1) of Vector_Element;
- for Iovec'Address use Iov;
- pragma Import (Ada, Iovec);
-
- begin
- for J in Iovec'Range loop
- Res := C_Recv
- (Fd,
- Iovec (J).Base.all'Address,
- Interfaces.C.int (Iovec (J).Length),
- 0);
-
- if Res < 0 then
- return Res;
- else
- Count := Count + Res;
- end if;
- end loop;
- return Count;
- end C_Readv;
-
- --------------
- -- C_Writev --
- --------------
-
- function C_Writev
- (Fd : C.int;
- Iov : System.Address;
- Iovcnt : C.int) return C.int
- is
- Res : C.int;
- Count : C.int := 0;
-
- Iovec : array (0 .. Iovcnt - 1) of Vector_Element;
- for Iovec'Address use Iov;
- pragma Import (Ada, Iovec);
-
- begin
- for J in Iovec'Range loop
- Res := C_Send
- (Fd,
- Iovec (J).Base.all'Address,
- Interfaces.C.int (Iovec (J).Length),
- Constants.MSG_Forced_Flags);
-
- if Res < 0 then
- return Res;
- else
- Count := Count + Res;
- end if;
- end loop;
- return Count;
- end C_Writev;
-
end GNAT.Sockets.Thin;
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