-- S p e c --
-- --
-- Copyright (C) 1991-1994, Florida State University --
--- Copyright (C) 1995-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1995-2011, Free Software Foundation, Inc. --
-- --
--- GNARL is free software; you can redistribute it and/or modify it under --
+-- 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 2, or (at your option) any later ver- --
--- sion. GNARL is distributed in the hope that it will be useful, but WITH- --
+-- 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. 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. --
+-- or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
--- 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 unit does not by itself cause the resulting executable to be --
--- covered by the GNU General Public License. This exception does not --
--- however invalidate any other reasons why the executable file might be --
--- covered by the GNU Public License. --
+-- 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/>. --
-- --
-- GNARL was developed by the GNARL team at Florida State University. --
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
-- --
------------------------------------------------------------------------------
--- This is Darwin pthreads version of this package.
+-- This is Darwin pthreads version of this package
--- This package includes all direct interfaces to OS services
--- that are needed by children of System.
+-- This package includes all direct interfaces to OS services that are needed
+-- by the tasking run-time (libgnarl).
--- PLEASE DO NOT add any with-clauses to this package
--- or remove the pragma Elaborate_Body.
--- It is designed to be a bottom-level (leaf) package.
+-- PLEASE DO NOT add any with-clauses to this package or remove the pragma
+-- Elaborate_Body. It is designed to be a bottom-level (leaf) package.
with Interfaces.C;
+with System.OS_Constants;
+
package System.OS_Interface is
pragma Preelaborate;
SIGUSR1 : constant := 30; -- user defined signal 1
SIGUSR2 : constant := 31; -- user defined signal 2
- SIGADAABORT : constant := SIGTERM;
+ SIGADAABORT : constant := SIGABRT;
-- Change this if you want to use another signal for task abort.
-- SIGTERM might be a good one.
type Signal_Set is array (Natural range <>) of Signal;
- Unmasked : constant Signal_Set :=
- (SIGTTIN, SIGTTOU, SIGSTOP, SIGTSTP);
+ Unmasked : constant Signal_Set :=
+ (SIGTTIN, SIGTTOU, SIGSTOP, SIGTSTP);
+
+ Reserved : constant Signal_Set :=
+ (SIGKILL, SIGSTOP);
- Reserved : constant Signal_Set :=
- (SIGKILL, SIGSTOP);
+ Exception_Signals : constant Signal_Set :=
+ (SIGFPE, SIGILL, SIGSEGV, SIGBUS);
+ -- These signals (when runtime or system) will be caught and converted
+ -- into an Ada exception.
type sigset_t is private;
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.
+ -- Indicates whether time slicing is supported
type timespec is private;
- type clockid_t is private;
-
- CLOCK_REALTIME : constant clockid_t;
+ type clockid_t is new int;
function clock_gettime
(clock_id : clockid_t;
function To_Timespec (D : Duration) return timespec;
pragma Inline (To_Timespec);
- type struct_timeval is private;
-
- function To_Duration (TV : struct_timeval) return Duration;
- pragma Inline (To_Duration);
-
- function To_Timeval (D : Duration) return struct_timeval;
- pragma Inline (To_Timeval);
-
-------------------------
-- Priority Scheduling --
-------------------------
SCHED_RR : constant := 2;
SCHED_FIFO : constant := 4;
+ function To_Target_Priority
+ (Prio : System.Any_Priority) return Interfaces.C.int;
+ -- Maps System.Any_Priority to a POSIX priority
+
-------------
-- Process --
-------------
---------
function lwp_self return System.Address;
- -- lwp_self does not exist on this thread library, revert to pthread_self
- -- which is the closest approximation (with getpid). This function is
- -- needed to share 7staprop.adb across POSIX-like targets.
- pragma Import (C, lwp_self, "pthread_self");
+ -- Return the mach thread bound to the current thread. The value is not
+ -- used by the run-time library but made available to debuggers.
-------------
-- Threads --
type Thread_Body is access
function (arg : System.Address) return System.Address;
+ pragma Convention (C, Thread_Body);
+
type pthread_t is private;
subtype Thread_Id is pthread_t;
PTHREAD_CREATE_DETACHED : constant := 2;
+ PTHREAD_SCOPE_PROCESS : constant := 2;
+ PTHREAD_SCOPE_SYSTEM : constant := 1;
+
+ -- Read/Write lock not supported on Darwin. To add support both types
+ -- pthread_rwlock_t and pthread_rwlockattr_t must properly be defined
+ -- with the associated routines pthread_rwlock_[init/destroy] and
+ -- pthread_rwlock_[rdlock/wrlock/unlock].
+
+ subtype pthread_rwlock_t is pthread_mutex_t;
+ subtype pthread_rwlockattr_t is pthread_mutexattr_t;
+
-----------
-- 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;
+ pragma Import (C, Alternate_Stack, "__gnat_alternate_stack");
+ -- The alternate signal stack for stack overflows
+
+ Alternate_Stack_Size : constant := 32 * 1024;
+ -- This must be in keeping with init.c:__gnat_alternate_stack
+
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 System.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 System.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_ON : constant := PROT_NONE;
PROT_OFF : constant := PROT_ALL;
- function mprotect (addr : System.Address;
- len : size_t;
- prot : int) return int;
+ function mprotect
+ (addr : System.Address;
+ len : size_t;
+ prot : int) return int;
pragma Import (C, mprotect);
---------------------------------------
function pthread_kill (thread : pthread_t; 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");
--------------------------
pragma Import (C, pthread_getspecific, "pthread_getspecific");
type destructor_pointer is access procedure (arg : System.Address);
+ pragma Convention (C, destructor_pointer);
function pthread_key_create
(key : access pthread_key_t;
type timespec is record
tv_sec : time_t;
- tv_nsec : int32_t;
+ tv_nsec : long;
end record;
pragma Convention (C, timespec);
- type clockid_t is new int;
- CLOCK_REALTIME : constant clockid_t := 0;
-
- type struct_timeval is record
- tv_sec : int32_t;
- tv_usec : int32_t;
- end record;
- pragma Convention (C, struct_timeval);
-
--
-- Darwin specific signal implementation
--
- type Pad_Type is array (1 .. 7) of unsigned;
+ type Pad_Type is array (1 .. 7) of unsigned_long;
type siginfo_t is record
si_signo : int; -- signal number
si_errno : int; -- errno association
end record;
pragma Convention (C, siginfo_t);
- type stack_t is record
- ss_sp : System.Address;
- ss_size : int;
- ss_flags : int;
- end record;
- pragma Convention (C, stack_t);
-
type mcontext_t is new System.Address;
type ucontext_t is record
--
type pthread_t is new System.Address;
- type pthread_lock_t is new long;
-
type pthread_attr_t is record
sig : long;
- opaque : padding (1 .. 36);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_ATTR_SIZE);
end record;
pragma Convention (C, pthread_attr_t);
type pthread_mutexattr_t is record
sig : long;
- opaque : padding (1 .. 8);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_MUTEXATTR_SIZE);
end record;
pragma Convention (C, pthread_mutexattr_t);
type pthread_mutex_t is record
sig : long;
- opaque : padding (1 .. 40);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_MUTEX_SIZE);
end record;
pragma Convention (C, pthread_mutex_t);
type pthread_condattr_t is record
sig : long;
- opaque : padding (1 .. 4);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_CONDATTR_SIZE);
end record;
pragma Convention (C, pthread_condattr_t);
type pthread_cond_t is record
sig : long;
- opaque : padding (1 .. 24);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_COND_SIZE);
end record;
pragma Convention (C, pthread_cond_t);
type pthread_once_t is record
sig : long;
- opaque : padding (1 .. 4);
+ opaque : padding (1 .. System.OS_Constants.PTHREAD_ONCE_SIZE);
end record;
pragma Convention (C, pthread_once_t);
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