-- --
-- B o d y --
-- --
--- Copyright (C) 2001-2004 Ada Core Technologies, Inc. --
+-- 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- --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, USA. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
package body GNAT.Sockets.Thin is
- Non_Blocking_Sockets : constant Fd_Set_Access :=
- New_Socket_Set (No_Socket_Set);
+ 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
-- been set in non-blocking mode by the user.
Quantum : constant Duration := 0.2;
- -- When Thread_Blocking_IO is False, we set sockets in
+ -- When SOSC.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.
- Thread_Blocking_IO : Boolean := True;
-
Unknown_System_Error : constant C.Strings.chars_ptr :=
C.Strings.New_String ("Unknown system error");
+ -- Comments required for following functions ???
+
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");
+ Flags : C.int) return ssize_t;
+ pragma Import (C, Syscall_Recvmsg, "recvmsg");
+
+ function Syscall_Sendmsg
+ (S : C.int;
+ Msg : System.Address;
+ Flags : C.int) return ssize_t;
+ 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");
Protocol : C.int) return C.int;
pragma Import (C, Syscall_Socket, "socket");
- function Non_Blocking_Socket (S : C.int) return Boolean;
+ procedure Disable_SIGPIPE (S : C.int);
+ pragma Import (C, Disable_SIGPIPE, "__gnat_disable_sigpipe");
+
+ procedure Disable_All_SIGPIPEs;
+ pragma Import (C, Disable_All_SIGPIPEs, "__gnat_disable_all_sigpipes");
+ -- Sets the process to ignore all SIGPIPE signals on platforms that
+ -- don't support Disable_SIGPIPE for particular streams.
+
+ 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
+ -- 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;
+ Disable_SIGPIPE (R);
return R;
end C_Accept;
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
+ and then Errno = SOSC.EISCONN
then
- return Thin.Success;
+ 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;
+ Res : ssize_t;
begin
loop
- Res := Syscall_Send (S, Msg, Len, Flags);
- exit when Thread_Blocking_IO
- or else Res /= Failure
+ Res := Syscall_Recvmsg (S, Msg, Flags);
+ exit when SOSC.Thread_Blocking_IO
+ or else Res /= ssize_t (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;
+ end C_Recvmsg;
+
+ ---------------
+ -- C_Sendmsg --
+ ---------------
+
+ function C_Sendmsg
+ (S : C.int;
+ Msg : System.Address;
+ Flags : C.int) return ssize_t
+ is
+ Res : ssize_t;
+
+ begin
+ loop
+ Res := Syscall_Sendmsg (S, Msg, Flags);
+ exit when SOSC.Thread_Blocking_IO
+ or else Res /= ssize_t (Failure)
+ or else Non_Blocking_Socket (S)
+ or else Errno /= SOSC.EWOULDBLOCK;
+ delay Quantum;
+ end loop;
+
+ return 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;
-
+ Disable_SIGPIPE (R);
return R;
end C_Socket;
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;
+ Disable_All_SIGPIPEs;
+ Reset_Socket_Set (Non_Blocking_Sockets'Access);
end Initialize;
-------------------------
R : Boolean;
begin
Task_Lock.Lock;
- R := Is_Socket_In_Set (Non_Blocking_Sockets, S);
+ 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
+
+ -- In this default implementation, we use a C version of these
+ -- subprograms provided by socket.c.
+
+ function C_Create (Fds : not null access Fd_Pair) return C.int;
+ function C_Read (Rsig : C.int) return C.int;
+ function C_Write (Wsig : C.int) return C.int;
+ procedure C_Close (Sig : C.int);
+
+ pragma Import (C, C_Create, "__gnat_create_signalling_fds");
+ pragma Import (C, C_Read, "__gnat_read_signalling_fd");
+ pragma Import (C, C_Write, "__gnat_write_signalling_fd");
+ pragma Import (C, C_Close, "__gnat_close_signalling_fd");
+
+ function Create
+ (Fds : not null access Fd_Pair) return C.int renames C_Create;
+ function Read (Rsig : C.int) return C.int renames C_Read;
+ function Write (Wsig : C.int) return C.int renames C_Write;
+ procedure Close (Sig : C.int) renames C_Close;
+
+ end Signalling_Fds;
--------------------------
-- Socket_Error_Message --
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;
OSDN Git Service
