------------------------------------------------------------------------------
-- --
--- GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS --
+-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
-- --
-- S Y S T E M . O S _ I N T E R F A C E --
-- --
-- S p e c --
-- --
-- Copyright (C) 1991-1994, Florida State University --
--- Copyright (C) 1995-2004, Free Software Foundation, Inc. --
+-- Copyright (C) 1995-2009, Free Software Foundation, Inc. --
-- --
-- GNARL 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 GNARL; 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, --
-- This is the FreeBSD PTHREADS version of this package
-- This package encapsulates all direct interfaces to OS services
--- that are needed by children of System.
+-- that are needed by the tasking run-time (libgnarl).
-- PLEASE DO NOT add any with-clauses to this package or remove the pragma
-- Preelaborate. This package is designed to be a bottom-level (leaf) package.
+with Ada.Unchecked_Conversion;
+
with Interfaces.C;
-with Unchecked_Conversion;
package System.OS_Interface is
pragma Preelaborate;
function Errno return int;
pragma Inline (Errno);
- EAGAIN : constant := 35;
- EINTR : constant := 4;
- EINVAL : constant := 22;
- ENOMEM : constant := 12;
- ETIMEDOUT : constant := 60;
+ EAGAIN : constant := 35;
+ EINTR : constant := 4;
+ EINVAL : constant := 22;
+ ENOMEM : constant := 12;
+ ETIMEDOUT : constant := 60;
-------------
-- Signals --
SIG_IGN : constant := 1;
SA_SIGINFO : constant := 16#0040#;
+ SA_ONSTACK : constant := 16#0001#;
function sigaction
(sig : Signal;
----------
Time_Slice_Supported : constant Boolean := True;
- -- Indicates wether time slicing is supported (i.e SCHED_RR is supported)
+ -- Indicates whether time slicing is supported (i.e SCHED_RR is supported)
type timespec is private;
tz_dsttime : int;
end record;
pragma Convention (C, struct_timezone);
- type struct_timeval is private;
- -- This is needed on systems that do not have clock_gettime()
- -- but do have gettimeofday().
-
- function To_Duration (TV : struct_timeval) return Duration;
- pragma Inline (To_Duration);
-
- function To_Timeval (D : Duration) return struct_timeval;
- pragma Inline (To_Timeval);
-
- function gettimeofday
- (tv : access struct_timeval;
- tz : System.Address) return int;
- pragma Import (C, gettimeofday, "gettimeofday");
procedure usleep (useconds : unsigned_long);
pragma Import (C, usleep, "usleep");
SCHED_OTHER : constant := 2;
SCHED_RR : constant := 3;
+ function To_Target_Priority
+ (Prio : System.Any_Priority) return Interfaces.C.int;
+ -- Maps System.Any_Priority to a POSIX priority
+
-------------
-- Process --
-------------
type Thread_Body is access
function (arg : System.Address) return System.Address;
+ pragma Convention (C, Thread_Body);
function Thread_Body_Access is new
- Unchecked_Conversion (System.Address, Thread_Body);
+ Ada.Unchecked_Conversion (System.Address, Thread_Body);
type pthread_t is private;
subtype Thread_Id is pthread_t;
PTHREAD_CREATE_DETACHED : constant := 1;
PTHREAD_CREATE_JOINABLE : constant := 0;
+ PTHREAD_SCOPE_PROCESS : constant := 0;
+ PTHREAD_SCOPE_SYSTEM : constant := 2;
+
-----------
-- Stack --
-----------
+ type stack_t is record
+ ss_sp : System.Address;
+ ss_size : size_t;
+ ss_flags : int;
+ end record;
+ pragma Convention (C, stack_t);
+
+ function sigaltstack
+ (ss : not null access stack_t;
+ oss : access stack_t) return int;
+ pragma Import (C, sigaltstack, "sigaltstack");
+
+ Alternate_Stack : aliased System.Address;
+ -- This is a dummy definition, never used (Alternate_Stack_Size is null)
+
+ Alternate_Stack_Size : constant := 0;
+ -- No alternate signal stack is used on this platform
+
Stack_Base_Available : constant Boolean := False;
- -- Indicates wether the stack base is available on this target.
- -- This allows us to share s-osinte.adb between all the FSU run time.
- -- Note that this value can only be true if pthread_t has a complete
- -- definition that corresponds exactly to the C header files.
+ -- Indicates whether the stack base is available on this target. This
+ -- allows us to share s-osinte.adb between all the FSU run time. Note that
+ -- this value can only be true if pthread_t has a complete definition that
+ -- corresponds exactly to the C header files.
function Get_Stack_Base (thread : pthread_t) return Address;
pragma Inline (Get_Stack_Base);
- -- returns the stack base of the specified thread.
- -- Only call this function when Stack_Base_Available is True.
+ -- returns the stack base of the specified thread. Only call this function
+ -- when Stack_Base_Available is True.
function Get_Page_Size return size_t;
function Get_Page_Size return Address;
pragma Import (C, Get_Page_Size, "getpagesize");
- -- returns the size of a page, or 0 if this is not relevant on this
- -- target
+ -- Returns the size of a page
PROT_NONE : constant := 0;
PROT_READ : constant := 1;
PROT_WRITE : constant := 2;
PROT_EXEC : constant := 4;
PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
-
PROT_ON : constant := PROT_NONE;
PROT_OFF : constant := PROT_ALL;
- function mprotect
- (addr : Address; len : size_t; prot : int) return int;
+ function mprotect (addr : Address; len : size_t; prot : int) return int;
pragma Import (C, mprotect);
---------------------------------------
-- Nonstandard Thread Initialization --
---------------------------------------
- -- FSU_THREADS requires pthread_init, which is nonstandard and
- -- this should be invoked during the elaboration of s-taprop.adb
+ -- FSU_THREADS requires pthread_init, which is nonstandard and this should
+ -- be invoked during the elaboration of s-taprop.adb.
-- FreeBSD does not require this so we provide an empty Ada body
sig : Signal) return int;
pragma Import (C, pthread_kill, "pthread_kill");
- type sigset_t_ptr is access all sigset_t;
-
function pthread_sigmask
(how : int;
- set : sigset_t_ptr;
- oset : sigset_t_ptr) return int;
+ set : access sigset_t;
+ oset : access sigset_t) return int;
pragma Import (C, pthread_sigmask, "pthread_sigmask");
--------------------------
function pthread_getspecific (key : pthread_key_t) return System.Address;
pragma Import (C, pthread_getspecific, "pthread_getspecific");
- type destructor_pointer is access
- procedure (arg : System.Address);
+ type destructor_pointer is access procedure (arg : System.Address);
+ pragma Convention (C, destructor_pointer);
function pthread_key_create
(key : access pthread_key_t;
type clockid_t is new int;
CLOCK_REALTIME : constant clockid_t := 0;
- type struct_timeval is record
- tv_sec : long;
- tv_usec : long;
- end record;
- pragma Convention (C, struct_timeval);
-
type pthread_t is new System.Address;
type pthread_attr_t is new System.Address;
type pthread_mutex_t is new System.Address;
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