ec946d1845
2006-10-31 Arnaud Charlet <charlet@adacore.com> Jose Ruiz <ruiz@adacore.com> * s-osinte-posix.adb, s-osinte-linux.ads, s-osinte-freebsd.adb, s-osinte-freebsd.ads, s-osinte-solaris-posix.ads, s-osinte-hpux.ads, s-osinte-darwin.adb, s-osinte-darwin.ads, s-osinte-lynxos-3.ads, s-osinte-lynxos-3.adb (To_Target_Priority): New function maps from System.Any_Priority to a POSIX priority on the target. * system-linux-ia64.ads: Extend range of Priority types on Linux to use the whole range made available by the system. * s-osinte-aix.adb, s-osinte-aix.ads (To_Target_Priority): New function maps from System.Any_Priority to a POSIX priority on the target. (PTHREAD_PRIO_PROTECT): Set real value. (PTHREAD_PRIO_INHERIT): Now a function. (SIGCPUFAIL): New signal. (Reserved): Add SIGALRM1, SIGWAITING, SIGCPUFAIL, since these signals are documented as reserved by the OS. * system-aix.ads: Use the full range of priorities provided by the system on AIX. * s-taprop-posix.adb: Call new function To_Target_Priority. (Set_Priority): Take into account Task_Dispatching_Policy and Priority_Specific_Dispatching pragmas when determining if Round Robin must be used for scheduling the task. * system-linux-x86_64.ads, system-linux-x86.ads, system-linux-ppc.ads: Extend range of Priority types on Linux to use the whole range made available by the system. * s-taprop-vms.adb, s-taprop-mingw.adb, s-taprop-irix.adb, s-taprop-tru64.adb, s-taprop-linux.adb, s-taprop-hpux-dce.adb, s-taprop-lynxos.adb (Finalize_TCB): invalidate the stack-check cache when deallocating the TCB in order to avoid potential references to deallocated data. (Set_Priority): Take into account Task_Dispatching_Policy and Priority_Specific_Dispatching pragmas when determining if Round Robin or FIFO within priorities must be used for scheduling the task. * s-taprop-vxworks.adb (Enter_Task): Store the user-level task id in the Thread field (to be used internally by the run-time system) and the kernel-level task id in the LWP field (to be used by the debugger). (Create_Task): Reorganize to unify the calls to taskSpawn into a single instance, and propagate the current task options to the spawned task. (Set_Priority): Take into account Priority_Specific_Dispatching pragmas. (Initialize): Set Round Robin dispatching when the corresponding pragma is in effect. From-SVN: r118235
144 lines
5.1 KiB
Ada
144 lines
5.1 KiB
Ada
------------------------------------------------------------------------------
|
|
-- --
|
|
-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
|
|
-- --
|
|
-- S Y S T E M . O S _ I N T E R F A C E --
|
|
-- --
|
|
-- B o d y --
|
|
-- --
|
|
-- Copyright (C) 1991-1994, Florida State University --
|
|
-- Copyright (C) 1995-2006, AdaCore --
|
|
-- --
|
|
-- 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- --
|
|
-- 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- --
|
|
-- 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, 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 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. --
|
|
-- --
|
|
-- GNARL was developed by the GNARL team at Florida State University. --
|
|
-- Extensive contributions were provided by Ada Core Technologies, Inc. --
|
|
-- --
|
|
------------------------------------------------------------------------------
|
|
|
|
-- This is a GNU/LinuxThreads, Solaris pthread and HP-UX pthread version
|
|
-- of this package.
|
|
|
|
pragma Polling (Off);
|
|
-- Turn off polling, we do not want ATC polling to take place during
|
|
-- tasking operations. It causes infinite loops and other problems.
|
|
|
|
-- This package encapsulates all direct interfaces to OS services
|
|
-- that are needed by children of System.
|
|
|
|
with Interfaces.C; use Interfaces.C;
|
|
package body System.OS_Interface is
|
|
|
|
--------------------
|
|
-- Get_Stack_Base --
|
|
--------------------
|
|
|
|
function Get_Stack_Base (thread : pthread_t) return Address is
|
|
pragma Warnings (Off, thread);
|
|
|
|
begin
|
|
return Null_Address;
|
|
end Get_Stack_Base;
|
|
|
|
------------------
|
|
-- pthread_init --
|
|
------------------
|
|
|
|
procedure pthread_init is
|
|
begin
|
|
null;
|
|
end pthread_init;
|
|
|
|
-----------------
|
|
-- To_Duration --
|
|
-----------------
|
|
|
|
function To_Duration (TS : timespec) return Duration is
|
|
begin
|
|
return Duration (TS.tv_sec) + Duration (TS.tv_nsec) / 10#1#E9;
|
|
end To_Duration;
|
|
|
|
function To_Duration (TV : struct_timeval) return Duration is
|
|
begin
|
|
return Duration (TV.tv_sec) + Duration (TV.tv_usec) / 10#1#E6;
|
|
end To_Duration;
|
|
|
|
------------------------
|
|
-- To_Target_Priority --
|
|
------------------------
|
|
|
|
function To_Target_Priority
|
|
(Prio : System.Any_Priority) return Interfaces.C.int
|
|
is
|
|
begin
|
|
return Interfaces.C.int (Prio);
|
|
end To_Target_Priority;
|
|
|
|
-----------------
|
|
-- To_Timespec --
|
|
-----------------
|
|
|
|
function To_Timespec (D : Duration) return timespec is
|
|
S : time_t;
|
|
F : Duration;
|
|
|
|
begin
|
|
S := time_t (Long_Long_Integer (D));
|
|
F := D - Duration (S);
|
|
|
|
-- If F has negative value due to a round-up, adjust for positive F
|
|
-- value.
|
|
|
|
if F < 0.0 then
|
|
S := S - 1;
|
|
F := F + 1.0;
|
|
end if;
|
|
|
|
return timespec'(tv_sec => S,
|
|
tv_nsec => long (Long_Long_Integer (F * 10#1#E9)));
|
|
end To_Timespec;
|
|
|
|
----------------
|
|
-- To_Timeval --
|
|
----------------
|
|
|
|
function To_Timeval (D : Duration) return struct_timeval is
|
|
S : time_t;
|
|
F : Duration;
|
|
|
|
begin
|
|
S := time_t (Long_Long_Integer (D));
|
|
F := D - Duration (S);
|
|
|
|
-- If F has negative value due to a round-up, adjust for positive F
|
|
-- value.
|
|
|
|
if F < 0.0 then
|
|
S := S - 1;
|
|
F := F + 1.0;
|
|
end if;
|
|
|
|
return
|
|
struct_timeval'
|
|
(tv_sec => S,
|
|
tv_usec => time_t (Long_Long_Integer (F * 10#1#E6)));
|
|
end To_Timeval;
|
|
|
|
end System.OS_Interface;
|