Re: Ada support for Debian GNU/Hurd (finally)
On Tue, 2012-04-10 at 18:51 +0200, Svante Signell wrote:
> On Fri, 2012-04-06 at 00:11 +0200, Samuel Thibault wrote:
...
> > > BTW: I think I have now a fully modified s-osinte-gnu.ads ready. send to
> > > the debian-hurd list for review?
> >
> > Yes. Maybe we'll find some other problems that could explain the task
> > issue.
Problem solved, I had to create a new file s-osinte-gnu.adb, and modify
s-osinte-gnu.ads and s-taprop-gnu.adb. Attaching the following patches
for review (and the README_gnat-4.6.3):
gcc_ada_gcc-interface_Makefile.in.diff (for upstream)
ada-s-osinte-gnu.adb.diff (for upstream)
ada-s-osinte-gnu.ads.diff (for upstream)
ada-s-taprop-gnu.adb.diff (for upstream)
Remaining patches are:
ada-bug564232_new.diff (for upstream)
ada-libgnatprj_new.diff (for Debian gnat-4.6)
debian_rules.patch.diff (for Debian gnat-4.6)
debian_rules.defs_ada.diff (for Debian gnat-4.6
bugs #668425 (gcc-4.6.3) and #668426 (gcc-4.7.0))
File: README_gnat-4.6.3
Download this file
==================
darnassus.sceen.net:~gnu_srs/gnat-4.6/README_gnat-4.6.3
Remaining problems:
1) the default GNU/Hurd gcc complier driver does not recognize ada
libraries: fixed by: debian_rules.defs_ada.diff: Bugs #667662 and #668268.
1a) the default GNU/Hurd gcc compiler does not build the GNU locales deb:
Fixed in gcc-4.6.3-3 and gcc-4.7.0-3: Bugs #668425 and #668426
2) built binaries segfaults at startup (dynamic and static: sjlj and
zcx): Solved by modifying s-taprop-gnu.adb, s-osinte-gnu.adb and
s-osinte-gnu.ads!
Download and install the built gnat debs:
=========================================
darnassus.sceen.net:~gnu_srs/gnat-4.6/debs/*.deb
gnat-4.6_4.6.3-2_hurd-i386.deb libgnatprj4.6-dbg_4.6.3-2_hurd-i386.deb
gnat-4.6-base_4.6.3-2_hurd-i386.deb libgnatprj4.6-dev_4.6.3-2_hurd-i386.deb
gnat-4.6-sjlj_4.6.3-2_hurd-i386.deb libgnatvsn4.6_4.6.3-2_hurd-i386.deb
libgnat-4.6_4.6.3-2_hurd-i386.deb libgnatvsn4.6-dbg_4.6.3-2_hurd-i386.deb
libgnat-4.6-dbg_4.6.3-2_hurd-i386.deb libgnatvsn4.6-dev_4.6.3-2_hurd-i386.deb
libgnatprj4.6_4.6.3-2_hurd-i386.deb
dpkg -i *.deb (or select the essential subset)
apt-get build-dep gnat-4.6
(apt-get install gnat)
Download the patches
====================
darnassus.sceen.net:~gnu_srs/gnat-4.6/patches/*.diff
Debian specific patches:
(Enables Ada: debian_rules.defs_ada.diff: Bugs reported)
(Enables GNU locale: debian_rules.defs_locales.diff: Fixed already)
debian_rules.patch.diff
ada-bug564232_new.diff
ada-libgnatprj_new.diff
Upstream patches:
gcc_ada_gcc-interface_Makefile.in.diff
ada-s-taprop-gnu.adb.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff
Install the gnat-4.6 sources
=============================
cd .../gnat-4.6
apt-get source gnat-4.6 (4.6_4.6.3-2)
unpacks to gnat-4.6-4.6.3
debian/ _MIN/
Installing the gcc-4.6 sources:
===============================
Not recommended, since the Hurd version has the old patches in the
patches directory already!
As root: apt-get source gcc-4.6 (4.6_4.6.3-1+hurd.1)
Installs gcc-4.6 at /usr/share and
/usr/src/gcc-4.6
debian gcc-4.6.3-dfsg.tar.xz patches
pwd
/home/srs/DEBs/gnat/gnat-4.6.3/gnat-4.6-4.6.3
ln -s /usr/src/gcc-4.6/gcc-4.6.3-dfsg.tar.xz .
Unpacking the gcc-4.6 sources
=============================
debian/rules unpack 2>&1 | tee ../unpack_gnat-4.6.3.log
creates stamps/
01-unpack-stamp 01-unpack-stamp-gcc-4.6.3-dfsg.tar.xz
Alternately: Installing the gcc-4.6 sources:
============================================
apt-get source gcc-4.6=4.6.3-3
Unpacks to: gcc-4.6-4.6.3
Unpacking the gcc-4.6 sources
=============================
cd gnat-4.6-4.6.3
ln -s ../gcc-4.6/gcc-4.6-4.6.3/ .
debian/rules unpack 2>&1 | tee ../unpack_gnat-4.6.3.log
creates stamps/01-unpack-stamp
ln -s gcc-4.6-4.6.3/gcc-4.6.3-dfsg.tar.xz .
debian/rules unpack 2>&1 | tee -a ../unpack_gnat-4.6.3.log
creates stamps/01-unpack-stamp-gcc-4.6.3-dfsg.tar.xz
Patching
========
Copy the following patches to debian/patches:
ada-bug564232_new.diff
ada-libgnatprj_new.diff
debian_rules.patch.diff
gcc_ada_gcc-interface_Makefile.in.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff
ada-s-taprop-gnu.adb.diff
Apply patches: (does not work, ada not enabled yet)
Add to the beginning of debian/patches/series:
debian_rules.defs_ada.diff -p1
debian_rules.patch.diff -p1
Does not work: the patches file is overwritten!!
Enabling and applying the Hurd-specific patches:
================================================
debian/rules.defs:
Enable ada for GNU/Hurd manually:
- ada_no_systems := gnu knetbsd-gnu
+ ada_no_systems :=
Add patches for GNU/Hurd manually:
debian/rules.patch:
ifeq ($(with_libgnat),yes)
debian_patches += \
ada-link-lib \
ada-libgnatvsn \
- ada-libgnatprj \
+ ada-libgnatprj_new \
ada-acats
ifeq ($(with_gnat_zcx)-$(with_gnat_sjlj),yes-yes)
debian_patches += \
ada-sjlj
endif
endif
ifeq ($(DEB_TARGET_ARCH_OS),kfreebsd)
debian_patches += ada-kfreebsd-gnu \
- ada-bug564232
+ ada-bug564232_new
+ endif
+
+ ifeq ($(DEB_TARGET_ARCH_OS),hurd)
+ debian_patches += \
+ ada-kfreebsd-gnu \
+ ada-bug564232_new \
+ ada-libgnatprj_new \
+ gcc_ada_gcc-interface_Makefile.in \
+ ada-s-osinte-gnu.adb \
+ ada-s-osinte-gnu.ads \
+ s-taprop-gnu.ads
endif
ifeq ($(DEB_TARGET_ARCH_OS),hurd)
- debian_patches += hurd-pthread
+ debian_patches += hurd-pthread hurd-fixes
endif
debian/rules patch 2>&1 | tee ../patch_gnat-4.6.3.log
creates stamps/
02-patch-stamp 02-series-stamp
FIXME: Delete this file when applying patches again: It controls
updating of the src/*/configure.ac to src/*/configure??? CHECK!!
FIXME: autogen is not installed! Needed??
>From patch_gnat-4.6.3.log:
cd /home/srs/DEBs/gnat-4.6/gnat-4.6-4.6.3/src/fixincludes && ./genfixes
./genfixes: 1: ./genfixes: autogen: not found
AutoGen appears to be out of date or not correctly installed.
Please download and install:
ftp://gcc.gnu.org/pub/gcc/infrastructure/autogen.tar.gz
cat stamps autotools_files
da4cbfef9bc80939fd3b8d5633760829 ./src/boehm-gc/configure.ac
5bb1e804ce8dfef6707776dc5545f5bb ./src/configure.ac <- UPDATE
f2d1a9bf0648d059eb3c7a3c2d5b045e ./src/gcc/configure.ac <- UPDATE
5fdfc9508e8b943cc51720e303c5f0e1 ./src/libffi/configure.ac <- UPDATE
68991723439735a382f55f368a845836 ./src/libgnatprj/configure.ac <- UPDATE
ab012655ff764cf0f0d49ea16e7e9afa ./src/libiberty/configure.ac <- UPDATE
f24e863bb5540f5a732309925f1e9e9d ./src/libjava/classpath/configure.ac
b1f8f6f05678a19cbab83e36f5b87e14 ./src/libjava/configure.ac
Unapply patches if needed:
debian/rules unpatch 2>&1 | tee ../unpatch_gnat-4.6.3.log
Patch hurd-pthread.diff does not remove cleanly (refresh it or enforce with -f)
quilt pop -af
rm stamps/02-series-stamp
rm stamps/02-patch-stamp
debian/rules patch 2>&1 | tee ../patch_gnat-4.6.3_1.log
creates the stamps and the debian/patches/series file.
quilt pop -a
Check:
quilt applied: (should show all patches below)
ada-driver-check.diff
ada-gcc-name.diff
ada-default-project-path.diff
ada-symbolic-tracebacks.diff
ada-library-project-files-soname.diff
ada-link-lib.diff
ada-libgnatvsn.diff
ada-libgnatprj_new.diff
ada-acats.diff
ada-sjlj.diff
ada-kfreebsd-gnu.diff
ada-bug564232_new.diff
gcc_ada_gcc-interface_Makefile.in.diff
ada-mips.diff
ada-s-osinte-gnu.adb.diff
ada-s-osinte-gnu.ads.diff
ada-s-taprop-gnu.adb.diff
hurd-pthread.diff
hurd-changes.diff
hurd-fixes.diff (gcc-4.6 only)
Configuring
===========
debian/rules configure 2>&1 | tee ../configure_gnat-4.6.3.log
Creates build/
Makefile, config.* etc!
Building
========
debian/rules build 2>&1 | tee ../build_gnat-4.6.3.log
Compile stops, reason:
src/libgnatprj/configure.ac is newer than src/libgnatprj/configure!
Find out why autoconf2.64 is not run here??
Make sure every patch changing a configure.ac creates a new configure:
(cd src; autoconf2.64): ada-link-lib.diff
(cd src/libgnatprj; autoconf2.64): ada-libgnatvsn_new.diff
(cd src/gcc; autoconf2.64)
(cd src/libffi; autoconf2.64)
(cd src/libiberty; autoconf2.64)
debian/rules build 2>&1 | tee -a ../build_gnat-4.6.3.log
Installing files
================
fakeroot debian/rules install 2>&1 | tee ../install_gnat-4.6.3.log
Creating debs
=============
fakeroot debian/rules binary 2>&1 | tee ../binary_gnat-4.6.3.log
DONE TO HERE: 2012-04-11
Of course the build can be made in one stage (if all the above steps
succeeds)
dpkg-buildpackage -b (or whatever)--- a/src/gcc/ada/gcc-interface/Makefile.in 2011-11-18 12:46:58.000000000 +0100
+++ b/src/gcc/ada/gcc-interface/Makefile.in 2012-03-28 11:28:09.000000000 +0200
@@ -1143,6 +1116,32 @@
LIBRARY_VERSION := $(LIB_VERSION)
endif
+ifeq ($(strip $(filter-out %86 gnu%,$(arch) $(osys))),)
+ LIBGNAT_TARGET_PAIRS = \
+ a-intnam.ads<a-intnam-freebsd.ads \
+ a-numaux.adb<a-numaux-x86.adb \
+ a-numaux.ads<a-numaux-x86.ads \
+ s-inmaop.adb<s-inmaop-posix.adb \
+ s-intman.adb<s-intman-posix.adb \
+ s-osinte.adb<s-osinte-gnu.adb \
+ s-osinte.ads<s-osinte-gnu.ads \
+ s-osprim.adb<s-osprim-posix.adb \
+ s-taprop.adb<s-taprop-gnu.adb \
+ s-taspri.ads<s-taspri-posix.ads \
+ s-tpopsp.adb<s-tpopsp-posix-foreign.adb \
+ system.ads<system-freebsd-x86.ads
+
+ TOOLS_TARGET_PAIRS = \
+ mlib-tgt-specific.adb<mlib-tgt-specific-linux.adb \
+ indepsw.adb<indepsw-gnu.adb
+
+ EH_MECHANISM=-gcc
+ THREADSLIB = -lpthread
+ GNATLIB_SHARED = gnatlib-shared-dual
+ GMEM_LIB = gmemlib
+ LIBRARY_VERSION := $(LIB_VERSION)
+endif
+
ifeq ($(strip $(filter-out x86_64 kfreebsd%,$(arch) $(osys))),)
LIBGNAT_TARGET_PAIRS = \
a-intnam.ads<a-intnam-freebsd.ads \
--- /dev/null 2012-01-30 20:41:15.189616186 +0100
+++ ./src/gcc/ada/s-taprop-gnu.adb 2012-04-11 19:17:52.000000000 +0200
@@ -0,0 +1,1336 @@
+------------------------------------------------------------------------------
+-- --
+-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
+-- --
+-- S Y S T E M . T A S K _ P R I M I T I V E S . O P E R A T I O N S --
+-- --
+-- B o d y --
+-- --
+-- Copyright (C) 1992-2009, 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- --
+-- 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. --
+-- --
+-- 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 a GNU/Hurd version of this package
+-- Note: Removed the SCHED_FIFO and Ceiling Locking from the posix version
+-- since these functions are not (yet) supported on GNU/Hurd
+
+-- This package contains all the GNULL primitives that interface directly with
+-- the underlying OS.
+
+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.
+
+with Ada.Unchecked_Conversion;
+with Ada.Unchecked_Deallocation;
+
+with Interfaces.C;
+
+with System.Tasking.Debug;
+with System.Interrupt_Management;
+with System.OS_Primitives;
+with System.Task_Info;
+
+with System.Soft_Links;
+-- We use System.Soft_Links instead of System.Tasking.Initialization
+-- because the later is a higher level package that we shouldn't depend on.
+-- For example when using the restricted run time, it is replaced by
+-- System.Tasking.Restricted.Stages.
+
+package body System.Task_Primitives.Operations is
+
+ package SSL renames System.Soft_Links;
+
+ use System.Tasking.Debug;
+ use System.Tasking;
+ use Interfaces.C;
+ use System.OS_Interface;
+ use System.Parameters;
+ use System.OS_Primitives;
+
+ ----------------
+ -- Local Data --
+ ----------------
+
+ -- The followings are logically constants, but need to be initialized
+ -- at run time.
+
+ Single_RTS_Lock : aliased RTS_Lock;
+ -- This is a lock to allow only one thread of control in the RTS at
+ -- a time; it is used to execute in mutual exclusion from all other tasks.
+ -- Used mainly in Single_Lock mode, but also to protect All_Tasks_List
+
+ ATCB_Key : aliased pthread_key_t;
+ -- Key used to find the Ada Task_Id associated with a thread
+
+ Environment_Task_Id : Task_Id;
+ -- A variable to hold Task_Id for the environment task
+
+ Unblocked_Signal_Mask : aliased sigset_t;
+ -- The set of signals that should unblocked in all tasks
+
+ -- The followings are internal configuration constants needed
+
+ Next_Serial_Number : Task_Serial_Number := 100;
+ -- We start at 100, to reserve some special values for
+ -- using in error checking.
+
+ Foreign_Task_Elaborated : aliased Boolean := True;
+ -- Used to identified fake tasks (i.e., non-Ada Threads)
+
+ Use_Alternate_Stack : constant Boolean := Alternate_Stack_Size /= 0;
+ -- Whether to use an alternate signal stack for stack overflows
+
+ Abort_Handler_Installed : Boolean := False;
+ -- True if a handler for the abort signal is installed
+
+ --------------------
+ -- Local Packages --
+ --------------------
+
+ package Specific is
+
+ procedure Initialize (Environment_Task : Task_Id);
+ pragma Inline (Initialize);
+ -- Initialize various data needed by this package
+
+ function Is_Valid_Task return Boolean;
+ pragma Inline (Is_Valid_Task);
+ -- Does executing thread have a TCB?
+
+ procedure Set (Self_Id : Task_Id);
+ pragma Inline (Set);
+ -- Set the self id for the current task
+
+ function Self return Task_Id;
+ pragma Inline (Self);
+ -- Return a pointer to the Ada Task Control Block of the calling task
+
+ end Specific;
+
+ package body Specific is separate;
+ -- The body of this package is target specific
+
+ ---------------------------------
+ -- Support for foreign threads --
+ ---------------------------------
+
+ function Register_Foreign_Thread (Thread : Thread_Id) return Task_Id;
+ -- Allocate and Initialize a new ATCB for the current Thread
+
+ function Register_Foreign_Thread
+ (Thread : Thread_Id) return Task_Id is separate;
+
+ -----------------------
+ -- Local Subprograms --
+ -----------------------
+
+ procedure Abort_Handler (Sig : Signal);
+ -- Signal handler used to implement asynchronous abort.
+ -- See also comment before body, below.
+
+ function To_Address is
+ new Ada.Unchecked_Conversion (Task_Id, System.Address);
+
+ -------------------
+ -- Abort_Handler --
+ -------------------
+
+ -- Target-dependent binding of inter-thread Abort signal to the raising of
+ -- the Abort_Signal exception.
+
+ -- The technical issues and alternatives here are essentially the
+ -- same as for raising exceptions in response to other signals
+ -- (e.g. Storage_Error). See code and comments in the package body
+ -- System.Interrupt_Management.
+
+ -- Some implementations may not allow an exception to be propagated out of
+ -- a handler, and others might leave the signal or interrupt that invoked
+ -- this handler masked after the exceptional return to the application
+ -- code.
+
+ -- GNAT exceptions are originally implemented using setjmp()/longjmp(). On
+ -- most UNIX systems, this will allow transfer out of a signal handler,
+ -- which is usually the only mechanism available for implementing
+ -- asynchronous handlers of this kind. However, some systems do not
+ -- restore the signal mask on longjmp(), leaving the abort signal masked.
+
+ procedure Abort_Handler (Sig : Signal) is
+ pragma Unreferenced (Sig);
+
+ T : constant Task_Id := Self;
+ Old_Set : aliased sigset_t;
+
+ Result : Interfaces.C.int;
+ pragma Warnings (Off, Result);
+
+ begin
+ -- It's not safe to raise an exception when using GCC ZCX mechanism.
+ -- Note that we still need to install a signal handler, since in some
+ -- cases (e.g. shutdown of the Server_Task in System.Interrupts) we
+ -- need to send the Abort signal to a task.
+
+ if ZCX_By_Default and then GCC_ZCX_Support then
+ return;
+ end if;
+
+ if T.Deferral_Level = 0
+ and then T.Pending_ATC_Level < T.ATC_Nesting_Level and then
+ not T.Aborting
+ then
+ T.Aborting := True;
+
+ -- Make sure signals used for RTS internal purpose are unmasked
+
+ Result := pthread_sigmask (SIG_UNBLOCK,
+ Unblocked_Signal_Mask'Access, Old_Set'Access);
+ pragma Assert (Result = 0);
+
+ raise Standard'Abort_Signal;
+ end if;
+ end Abort_Handler;
+
+ -----------------
+ -- Stack_Guard --
+ -----------------
+
+ procedure Stack_Guard (T : ST.Task_Id; On : Boolean) is
+ Stack_Base : constant Address := Get_Stack_Base (T.Common.LL.Thread);
+ Guard_Page_Address : Address;
+
+ Res : Interfaces.C.int;
+
+ begin
+ if Stack_Base_Available then
+
+ -- Compute the guard page address
+
+ Guard_Page_Address :=
+ Stack_Base - (Stack_Base mod Get_Page_Size) + Get_Page_Size;
+
+ Res :=
+ mprotect (Guard_Page_Address, Get_Page_Size,
+ prot => (if On then PROT_ON else PROT_OFF));
+ pragma Assert (Res = 0);
+ end if;
+ end Stack_Guard;
+
+ --------------------
+ -- Get_Thread_Id --
+ --------------------
+
+ function Get_Thread_Id (T : ST.Task_Id) return OSI.Thread_Id is
+ begin
+ return T.Common.LL.Thread;
+ end Get_Thread_Id;
+
+ ----------
+ -- Self --
+ ----------
+
+ function Self return Task_Id renames Specific.Self;
+
+ ---------------------
+ -- Initialize_Lock --
+ ---------------------
+
+ -- Note: mutexes and cond_variables needed per-task basis are
+ -- initialized in Initialize_TCB and the Storage_Error is
+ -- handled. Other mutexes (such as RTS_Lock, Memory_Lock...)
+ -- used in RTS is initialized before any status change of RTS.
+ -- Therefore raising Storage_Error in the following routines
+ -- should be able to be handled safely.
+
+ procedure Initialize_Lock
+ (Prio : System.Any_Priority;
+ L : not null access Lock)
+ is
+ pragma Unreferenced (Prio);
+
+ Attributes : aliased pthread_mutexattr_t;
+ Result : Interfaces.C.int;
+
+ begin
+ Result := pthread_mutexattr_init (Attributes'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ raise Storage_Error with "Failed to allocate a lock";
+ end if;
+
+ Result := pthread_mutex_init (L, Attributes'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ Result := pthread_mutexattr_destroy (Attributes'Access);
+ raise Storage_Error;
+ end if;
+
+ Result := pthread_mutexattr_destroy (Attributes'Access);
+ pragma Assert (Result = 0);
+ end Initialize_Lock;
+
+ procedure Initialize_Lock
+ (L : not null access RTS_Lock; Level : Lock_Level)
+ is
+ pragma Unreferenced (Level);
+
+ Attributes : aliased pthread_mutexattr_t;
+ Result : Interfaces.C.int;
+
+ begin
+ Result := pthread_mutexattr_init (Attributes'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ raise Storage_Error with "Failed to allocate a lock";
+ end if;
+
+ Result := pthread_mutex_init (L, Attributes'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ Result := pthread_mutexattr_destroy (Attributes'Access);
+ raise Storage_Error;
+ end if;
+
+ Result := pthread_mutexattr_destroy (Attributes'Access);
+ pragma Assert (Result = 0);
+ end Initialize_Lock;
+
+ -------------------
+ -- Finalize_Lock --
+ -------------------
+
+ procedure Finalize_Lock (L : not null access Lock) is
+ Result : Interfaces.C.int;
+ begin
+ Result := pthread_mutex_destroy (L);
+ pragma Assert (Result = 0);
+ end Finalize_Lock;
+
+ procedure Finalize_Lock (L : not null access RTS_Lock) is
+ Result : Interfaces.C.int;
+ begin
+ Result := pthread_mutex_destroy (L);
+ pragma Assert (Result = 0);
+ end Finalize_Lock;
+
+ ----------------
+ -- Write_Lock --
+ ----------------
+
+ procedure Write_Lock
+ (L : not null access Lock; Ceiling_Violation : out Boolean)
+ is
+ Result : Interfaces.C.int;
+
+ begin
+ Result := pthread_mutex_lock (L);
+
+ -- Assume that the cause of EINVAL is a priority ceiling violation
+
+ Ceiling_Violation := (Result = EINVAL);
+ pragma Assert (Result = 0 or else Result = EINVAL);
+ end Write_Lock;
+
+ procedure Write_Lock
+ (L : not null access RTS_Lock;
+ Global_Lock : Boolean := False)
+ is
+ Result : Interfaces.C.int;
+ begin
+ if not Single_Lock or else Global_Lock then
+ Result := pthread_mutex_lock (L);
+ pragma Assert (Result = 0);
+ end if;
+ end Write_Lock;
+
+ procedure Write_Lock (T : Task_Id) is
+ Result : Interfaces.C.int;
+ begin
+ if not Single_Lock then
+ Result := pthread_mutex_lock (T.Common.LL.L'Access);
+ pragma Assert (Result = 0);
+ end if;
+ end Write_Lock;
+
+ ---------------
+ -- Read_Lock --
+ ---------------
+
+ procedure Read_Lock
+ (L : not null access Lock; Ceiling_Violation : out Boolean) is
+ begin
+ Write_Lock (L, Ceiling_Violation);
+ end Read_Lock;
+
+ ------------
+ -- Unlock --
+ ------------
+
+ procedure Unlock (L : not null access Lock) is
+ Result : Interfaces.C.int;
+ begin
+ Result := pthread_mutex_unlock (L);
+ pragma Assert (Result = 0);
+ end Unlock;
+
+ procedure Unlock
+ (L : not null access RTS_Lock; Global_Lock : Boolean := False)
+ is
+ Result : Interfaces.C.int;
+ begin
+ if not Single_Lock or else Global_Lock then
+ Result := pthread_mutex_unlock (L);
+ pragma Assert (Result = 0);
+ end if;
+ end Unlock;
+
+ procedure Unlock (T : Task_Id) is
+ Result : Interfaces.C.int;
+ begin
+ if not Single_Lock then
+ Result := pthread_mutex_unlock (T.Common.LL.L'Access);
+ pragma Assert (Result = 0);
+ end if;
+ end Unlock;
+
+ -----------------
+ -- Set_Ceiling --
+ -----------------
+
+ -- Dynamic priority ceilings are not supported by the underlying system
+
+ procedure Set_Ceiling
+ (L : not null access Lock;
+ Prio : System.Any_Priority)
+ is
+ pragma Unreferenced (L, Prio);
+ begin
+ null;
+ end Set_Ceiling;
+
+ -----------
+ -- Sleep --
+ -----------
+
+ procedure Sleep
+ (Self_ID : Task_Id;
+ Reason : System.Tasking.Task_States)
+ is
+ pragma Unreferenced (Reason);
+
+ Result : Interfaces.C.int;
+
+ begin
+ Result :=
+ pthread_cond_wait
+ (cond => Self_ID.Common.LL.CV'Access,
+ mutex => (if Single_Lock
+ then Single_RTS_Lock'Access
+ else Self_ID.Common.LL.L'Access));
+
+ -- EINTR is not considered a failure
+
+ pragma Assert (Result = 0 or else Result = EINTR);
+ end Sleep;
+
+ -----------------
+ -- Timed_Sleep --
+ -----------------
+
+ -- This is for use within the run-time system, so abort is
+ -- assumed to be already deferred, and the caller should be
+ -- holding its own ATCB lock.
+
+ procedure Timed_Sleep
+ (Self_ID : Task_Id;
+ Time : Duration;
+ Mode : ST.Delay_Modes;
+ Reason : Task_States;
+ Timedout : out Boolean;
+ Yielded : out Boolean)
+ is
+ pragma Unreferenced (Reason);
+
+ Base_Time : constant Duration := Monotonic_Clock;
+ Check_Time : Duration := Base_Time;
+ Rel_Time : Duration;
+ Abs_Time : Duration;
+ Request : aliased timespec;
+ Result : Interfaces.C.int;
+
+ begin
+ Timedout := True;
+ Yielded := False;
+
+ if Mode = Relative then
+ Abs_Time := Duration'Min (Time, Max_Sensible_Delay) + Check_Time;
+
+ if Relative_Timed_Wait then
+ Rel_Time := Duration'Min (Max_Sensible_Delay, Time);
+ end if;
+
+ else
+ Abs_Time := Duration'Min (Check_Time + Max_Sensible_Delay, Time);
+
+ if Relative_Timed_Wait then
+ Rel_Time := Duration'Min (Max_Sensible_Delay, Time - Check_Time);
+ end if;
+ end if;
+
+ if Abs_Time > Check_Time then
+ Request :=
+ To_Timespec (if Relative_Timed_Wait then Rel_Time else Abs_Time);
+
+ loop
+ exit when Self_ID.Pending_ATC_Level < Self_ID.ATC_Nesting_Level;
+
+ Result :=
+ pthread_cond_timedwait
+ (cond => Self_ID.Common.LL.CV'Access,
+ mutex => (if Single_Lock
+ then Single_RTS_Lock'Access
+ else Self_ID.Common.LL.L'Access),
+ abstime => Request'Access);
+
+ Check_Time := Monotonic_Clock;
+ exit when Abs_Time <= Check_Time or else Check_Time < Base_Time;
+
+ if Result = 0 or Result = EINTR then
+
+ -- Somebody may have called Wakeup for us
+
+ Timedout := False;
+ exit;
+ end if;
+
+ pragma Assert (Result = ETIMEDOUT);
+ end loop;
+ end if;
+ end Timed_Sleep;
+
+ -----------------
+ -- Timed_Delay --
+ -----------------
+
+ -- This is for use in implementing delay statements, so we assume the
+ -- caller is abort-deferred but is holding no locks.
+
+ procedure Timed_Delay
+ (Self_ID : Task_Id;
+ Time : Duration;
+ Mode : ST.Delay_Modes)
+ is
+ Base_Time : constant Duration := Monotonic_Clock;
+ Check_Time : Duration := Base_Time;
+ Abs_Time : Duration;
+ Rel_Time : Duration;
+ Request : aliased timespec;
+
+ Result : Interfaces.C.int;
+ pragma Warnings (Off, Result);
+
+ begin
+ if Single_Lock then
+ Lock_RTS;
+ end if;
+
+ Write_Lock (Self_ID);
+
+ if Mode = Relative then
+ Abs_Time := Duration'Min (Time, Max_Sensible_Delay) + Check_Time;
+
+ if Relative_Timed_Wait then
+ Rel_Time := Duration'Min (Max_Sensible_Delay, Time);
+ end if;
+
+ else
+ Abs_Time := Duration'Min (Check_Time + Max_Sensible_Delay, Time);
+
+ if Relative_Timed_Wait then
+ Rel_Time := Duration'Min (Max_Sensible_Delay, Time - Check_Time);
+ end if;
+ end if;
+
+ if Abs_Time > Check_Time then
+ Request :=
+ To_Timespec (if Relative_Timed_Wait then Rel_Time else Abs_Time);
+ Self_ID.Common.State := Delay_Sleep;
+
+ loop
+ exit when Self_ID.Pending_ATC_Level < Self_ID.ATC_Nesting_Level;
+
+ Result :=
+ pthread_cond_timedwait
+ (cond => Self_ID.Common.LL.CV'Access,
+ mutex => (if Single_Lock
+ then Single_RTS_Lock'Access
+ else Self_ID.Common.LL.L'Access),
+ abstime => Request'Access);
+
+ Check_Time := Monotonic_Clock;
+ exit when Abs_Time <= Check_Time or else Check_Time < Base_Time;
+
+ pragma Assert (Result = 0
+ or else Result = ETIMEDOUT
+ or else Result = EINTR);
+ end loop;
+
+ Self_ID.Common.State := Runnable;
+ end if;
+
+ Unlock (Self_ID);
+
+ if Single_Lock then
+ Unlock_RTS;
+ end if;
+
+ Result := sched_yield;
+ end Timed_Delay;
+
+ ---------------------
+ -- Monotonic_Clock --
+ ---------------------
+
+ function Monotonic_Clock return Duration is
+ TS : aliased timespec;
+ Result : Interfaces.C.int;
+ begin
+ Result := clock_gettime
+ (clock_id => CLOCK_REALTIME, tp => TS'Unchecked_Access);
+ pragma Assert (Result = 0);
+ return To_Duration (TS);
+ end Monotonic_Clock;
+
+ -------------------
+ -- RT_Resolution --
+ -------------------
+
+ function RT_Resolution return Duration is
+ begin
+ return 10#1.0#E-6;
+ end RT_Resolution;
+
+ ------------
+ -- Wakeup --
+ ------------
+
+ procedure Wakeup (T : Task_Id; Reason : System.Tasking.Task_States) is
+ pragma Unreferenced (Reason);
+ Result : Interfaces.C.int;
+ begin
+ Result := pthread_cond_signal (T.Common.LL.CV'Access);
+ pragma Assert (Result = 0);
+ end Wakeup;
+
+ -----------
+ -- Yield --
+ -----------
+
+ procedure Yield (Do_Yield : Boolean := True) is
+ Result : Interfaces.C.int;
+ pragma Unreferenced (Result);
+ begin
+ if Do_Yield then
+ Result := sched_yield;
+ end if;
+ end Yield;
+
+ ------------------
+ -- Set_Priority --
+ ------------------
+
+ procedure Set_Priority
+ (T : Task_Id;
+ Prio : System.Any_Priority;
+ Loss_Of_Inheritance : Boolean := False)
+ is
+ pragma Unreferenced (Loss_Of_Inheritance);
+
+ begin
+ null;
+ end Set_Priority;
+
+ ------------------
+ -- Get_Priority --
+ ------------------
+
+ function Get_Priority (T : Task_Id) return System.Any_Priority is
+ begin
+ return T.Common.Current_Priority;
+ end Get_Priority;
+
+ ----------------
+ -- Enter_Task --
+ ----------------
+
+ procedure Enter_Task (Self_ID : Task_Id) is
+ begin
+ Self_ID.Common.LL.Thread := pthread_self;
+ Self_ID.Common.LL.LWP := lwp_self;
+
+ Specific.Set (Self_ID);
+
+ if Use_Alternate_Stack then
+ declare
+ Stack : aliased stack_t;
+ Result : Interfaces.C.int;
+ begin
+ Stack.ss_sp := Self_ID.Common.Task_Alternate_Stack;
+ Stack.ss_size := Alternate_Stack_Size;
+ Stack.ss_flags := 0;
+ Result := sigaltstack (Stack'Access, null);
+ pragma Assert (Result = 0);
+ end;
+ end if;
+ end Enter_Task;
+
+ --------------
+ -- New_ATCB --
+ --------------
+
+ function New_ATCB (Entry_Num : Task_Entry_Index) return Task_Id is
+ begin
+ return new Ada_Task_Control_Block (Entry_Num);
+ end New_ATCB;
+
+ -------------------
+ -- Is_Valid_Task --
+ -------------------
+
+ function Is_Valid_Task return Boolean renames Specific.Is_Valid_Task;
+
+ -----------------------------
+ -- Register_Foreign_Thread --
+ -----------------------------
+
+ function Register_Foreign_Thread return Task_Id is
+ begin
+ if Is_Valid_Task then
+ return Self;
+ else
+ return Register_Foreign_Thread (pthread_self);
+ end if;
+ end Register_Foreign_Thread;
+
+ --------------------
+ -- Initialize_TCB --
+ --------------------
+
+ procedure Initialize_TCB (Self_ID : Task_Id; Succeeded : out Boolean) is
+ Mutex_Attr : aliased pthread_mutexattr_t;
+ Result : Interfaces.C.int;
+ Cond_Attr : aliased pthread_condattr_t;
+
+ begin
+ -- Give the task a unique serial number
+
+ Self_ID.Serial_Number := Next_Serial_Number;
+ Next_Serial_Number := Next_Serial_Number + 1;
+ pragma Assert (Next_Serial_Number /= 0);
+
+ if not Single_Lock then
+ Result := pthread_mutexattr_init (Mutex_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = 0 then
+ Result :=
+ pthread_mutex_init
+ (Self_ID.Common.LL.L'Access,
+ Mutex_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+ end if;
+
+ if Result /= 0 then
+ Succeeded := False;
+ return;
+ end if;
+
+ Result := pthread_mutexattr_destroy (Mutex_Attr'Access);
+ pragma Assert (Result = 0);
+ end if;
+
+ Result := pthread_condattr_init (Cond_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = 0 then
+ Result :=
+ pthread_cond_init
+ (Self_ID.Common.LL.CV'Access, Cond_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+ end if;
+
+ if Result = 0 then
+ Succeeded := True;
+ else
+ if not Single_Lock then
+ Result := pthread_mutex_destroy (Self_ID.Common.LL.L'Access);
+ pragma Assert (Result = 0);
+ end if;
+
+ Succeeded := False;
+ end if;
+
+ Result := pthread_condattr_destroy (Cond_Attr'Access);
+ pragma Assert (Result = 0);
+ end Initialize_TCB;
+
+ -----------------
+ -- Create_Task --
+ -----------------
+
+ procedure Create_Task
+ (T : Task_Id;
+ Wrapper : System.Address;
+ Stack_Size : System.Parameters.Size_Type;
+ Priority : System.Any_Priority;
+ Succeeded : out Boolean)
+ is
+ Attributes : aliased pthread_attr_t;
+ Adjusted_Stack_Size : Interfaces.C.size_t;
+ Page_Size : constant Interfaces.C.size_t := Get_Page_Size;
+ Result : Interfaces.C.int;
+
+ function Thread_Body_Access is new
+ Ada.Unchecked_Conversion (System.Address, Thread_Body);
+
+ use System.Task_Info;
+
+ begin
+ Adjusted_Stack_Size :=
+ Interfaces.C.size_t (Stack_Size + Alternate_Stack_Size);
+
+ if Stack_Base_Available then
+
+ -- If Stack Checking is supported then allocate 2 additional pages:
+
+ -- In the worst case, stack is allocated at something like
+ -- N * Get_Page_Size - epsilon, we need to add the size for 2 pages
+ -- to be sure the effective stack size is greater than what
+ -- has been asked.
+
+ Adjusted_Stack_Size := Adjusted_Stack_Size + 2 * Page_Size;
+ end if;
+
+ -- Round stack size as this is required by some OSes (Darwin)
+
+ Adjusted_Stack_Size := Adjusted_Stack_Size + Page_Size - 1;
+ Adjusted_Stack_Size :=
+ Adjusted_Stack_Size - Adjusted_Stack_Size mod Page_Size;
+
+ Result := pthread_attr_init (Attributes'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result /= 0 then
+ Succeeded := False;
+ return;
+ end if;
+
+ Result :=
+ pthread_attr_setdetachstate
+ (Attributes'Access, PTHREAD_CREATE_DETACHED);
+ pragma Assert (Result = 0);
+
+ Result :=
+ pthread_attr_setstacksize
+ (Attributes'Access, Adjusted_Stack_Size);
+ pragma Assert (Result = 0);
+
+ -- Since the initial signal mask of a thread is inherited from the
+ -- creator, and the Environment task has all its signals masked, we
+ -- do not need to manipulate caller's signal mask at this point.
+ -- All tasks in RTS will have All_Tasks_Mask initially.
+
+ Result := pthread_create
+ (T.Common.LL.Thread'Access,
+ Attributes'Access,
+ Thread_Body_Access (Wrapper),
+ To_Address (T));
+ pragma Assert (Result = 0 or else Result = EAGAIN);
+
+ Succeeded := Result = 0;
+
+ Result := pthread_attr_destroy (Attributes'Access);
+ pragma Assert (Result = 0);
+
+ if Succeeded then
+ Set_Priority (T, Priority);
+ end if;
+ end Create_Task;
+
+ ------------------
+ -- Finalize_TCB --
+ ------------------
+
+ procedure Finalize_TCB (T : Task_Id) is
+ Result : Interfaces.C.int;
+ Tmp : Task_Id := T;
+ Is_Self : constant Boolean := T = Self;
+
+ procedure Free is new
+ Ada.Unchecked_Deallocation (Ada_Task_Control_Block, Task_Id);
+
+ begin
+ if not Single_Lock then
+ Result := pthread_mutex_destroy (T.Common.LL.L'Access);
+ pragma Assert (Result = 0);
+ end if;
+
+ Result := pthread_cond_destroy (T.Common.LL.CV'Access);
+ pragma Assert (Result = 0);
+
+ if T.Known_Tasks_Index /= -1 then
+ Known_Tasks (T.Known_Tasks_Index) := null;
+ end if;
+
+ Free (Tmp);
+
+ if Is_Self then
+ Specific.Set (null);
+ end if;
+ end Finalize_TCB;
+
+ ---------------
+ -- Exit_Task --
+ ---------------
+
+ procedure Exit_Task is
+ begin
+ -- Mark this task as unknown, so that if Self is called, it won't
+ -- return a dangling pointer.
+
+ Specific.Set (null);
+ end Exit_Task;
+
+ ----------------
+ -- Abort_Task --
+ ----------------
+
+ procedure Abort_Task (T : Task_Id) is
+ Result : Interfaces.C.int;
+ begin
+ if Abort_Handler_Installed then
+ Result :=
+ pthread_kill
+ (T.Common.LL.Thread,
+ Signal (System.Interrupt_Management.Abort_Task_Interrupt));
+ pragma Assert (Result = 0);
+ end if;
+ end Abort_Task;
+
+ ----------------
+ -- Initialize --
+ ----------------
+
+ procedure Initialize (S : in out Suspension_Object) is
+ Mutex_Attr : aliased pthread_mutexattr_t;
+ Cond_Attr : aliased pthread_condattr_t;
+ Result : Interfaces.C.int;
+
+ begin
+ -- Initialize internal state (always to False (RM D.10 (6)))
+
+ S.State := False;
+ S.Waiting := False;
+
+ -- Initialize internal mutex
+
+ Result := pthread_mutexattr_init (Mutex_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ raise Storage_Error;
+ end if;
+
+ Result := pthread_mutex_init (S.L'Access, Mutex_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result = ENOMEM then
+ Result := pthread_mutexattr_destroy (Mutex_Attr'Access);
+ pragma Assert (Result = 0);
+
+ raise Storage_Error;
+ end if;
+
+ Result := pthread_mutexattr_destroy (Mutex_Attr'Access);
+ pragma Assert (Result = 0);
+
+ -- Initialize internal condition variable
+
+ Result := pthread_condattr_init (Cond_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result /= 0 then
+ Result := pthread_mutex_destroy (S.L'Access);
+ pragma Assert (Result = 0);
+
+ if Result = ENOMEM then
+ raise Storage_Error;
+ end if;
+ end if;
+
+ Result := pthread_cond_init (S.CV'Access, Cond_Attr'Access);
+ pragma Assert (Result = 0 or else Result = ENOMEM);
+
+ if Result /= 0 then
+ Result := pthread_mutex_destroy (S.L'Access);
+ pragma Assert (Result = 0);
+
+ if Result = ENOMEM then
+ Result := pthread_condattr_destroy (Cond_Attr'Access);
+ pragma Assert (Result = 0);
+ raise Storage_Error;
+ end if;
+ end if;
+
+ Result := pthread_condattr_destroy (Cond_Attr'Access);
+ pragma Assert (Result = 0);
+ end Initialize;
+
+ --------------
+ -- Finalize --
+ --------------
+
+ procedure Finalize (S : in out Suspension_Object) is
+ Result : Interfaces.C.int;
+
+ begin
+ -- Destroy internal mutex
+
+ Result := pthread_mutex_destroy (S.L'Access);
+ pragma Assert (Result = 0);
+
+ -- Destroy internal condition variable
+
+ Result := pthread_cond_destroy (S.CV'Access);
+ pragma Assert (Result = 0);
+ end Finalize;
+
+ -------------------
+ -- Current_State --
+ -------------------
+
+ function Current_State (S : Suspension_Object) return Boolean is
+ begin
+ -- We do not want to use lock on this read operation. State is marked
+ -- as Atomic so that we ensure that the value retrieved is correct.
+
+ return S.State;
+ end Current_State;
+
+ ---------------
+ -- Set_False --
+ ---------------
+
+ procedure Set_False (S : in out Suspension_Object) is
+ Result : Interfaces.C.int;
+
+ begin
+ SSL.Abort_Defer.all;
+
+ Result := pthread_mutex_lock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ S.State := False;
+
+ Result := pthread_mutex_unlock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ SSL.Abort_Undefer.all;
+ end Set_False;
+
+ --------------
+ -- Set_True --
+ --------------
+
+ procedure Set_True (S : in out Suspension_Object) is
+ Result : Interfaces.C.int;
+
+ begin
+ SSL.Abort_Defer.all;
+
+ Result := pthread_mutex_lock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ -- If there is already a task waiting on this suspension object then
+ -- we resume it, leaving the state of the suspension object to False,
+ -- as it is specified in (RM D.10(9)). Otherwise, it just leaves
+ -- the state to True.
+
+ if S.Waiting then
+ S.Waiting := False;
+ S.State := False;
+
+ Result := pthread_cond_signal (S.CV'Access);
+ pragma Assert (Result = 0);
+
+ else
+ S.State := True;
+ end if;
+
+ Result := pthread_mutex_unlock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ SSL.Abort_Undefer.all;
+ end Set_True;
+
+ ------------------------
+ -- Suspend_Until_True --
+ ------------------------
+
+ procedure Suspend_Until_True (S : in out Suspension_Object) is
+ Result : Interfaces.C.int;
+
+ begin
+ SSL.Abort_Defer.all;
+
+ Result := pthread_mutex_lock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ if S.Waiting then
+
+ -- Program_Error must be raised upon calling Suspend_Until_True
+ -- if another task is already waiting on that suspension object
+ -- (RM D.10(10)).
+
+ Result := pthread_mutex_unlock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ SSL.Abort_Undefer.all;
+
+ raise Program_Error;
+
+ else
+ -- Suspend the task if the state is False. Otherwise, the task
+ -- continues its execution, and the state of the suspension object
+ -- is set to False (ARM D.10 par. 9).
+
+ if S.State then
+ S.State := False;
+ else
+ S.Waiting := True;
+
+ loop
+ -- Loop in case pthread_cond_wait returns earlier than expected
+ -- (e.g. in case of EINTR caused by a signal).
+
+ Result := pthread_cond_wait (S.CV'Access, S.L'Access);
+ pragma Assert (Result = 0 or else Result = EINTR);
+
+ exit when not S.Waiting;
+ end loop;
+ end if;
+
+ Result := pthread_mutex_unlock (S.L'Access);
+ pragma Assert (Result = 0);
+
+ SSL.Abort_Undefer.all;
+ end if;
+ end Suspend_Until_True;
+
+ ----------------
+ -- Check_Exit --
+ ----------------
+
+ -- Dummy version
+
+ function Check_Exit (Self_ID : ST.Task_Id) return Boolean is
+ pragma Unreferenced (Self_ID);
+ begin
+ return True;
+ end Check_Exit;
+
+ --------------------
+ -- Check_No_Locks --
+ --------------------
+
+ function Check_No_Locks (Self_ID : ST.Task_Id) return Boolean is
+ pragma Unreferenced (Self_ID);
+ begin
+ return True;
+ end Check_No_Locks;
+
+ ----------------------
+ -- Environment_Task --
+ ----------------------
+
+ function Environment_Task return Task_Id is
+ begin
+ return Environment_Task_Id;
+ end Environment_Task;
+
+ --------------
+ -- Lock_RTS --
+ --------------
+
+ procedure Lock_RTS is
+ begin
+ Write_Lock (Single_RTS_Lock'Access, Global_Lock => True);
+ end Lock_RTS;
+
+ ----------------
+ -- Unlock_RTS --
+ ----------------
+
+ procedure Unlock_RTS is
+ begin
+ Unlock (Single_RTS_Lock'Access, Global_Lock => True);
+ end Unlock_RTS;
+
+ ------------------
+ -- Suspend_Task --
+ ------------------
+
+ function Suspend_Task
+ (T : ST.Task_Id;
+ Thread_Self : Thread_Id) return Boolean
+ is
+ pragma Unreferenced (T, Thread_Self);
+ begin
+ return False;
+ end Suspend_Task;
+
+ -----------------
+ -- Resume_Task --
+ -----------------
+
+ function Resume_Task
+ (T : ST.Task_Id;
+ Thread_Self : Thread_Id) return Boolean
+ is
+ pragma Unreferenced (T, Thread_Self);
+ begin
+ return False;
+ end Resume_Task;
+
+ --------------------
+ -- Stop_All_Tasks --
+ --------------------
+
+ procedure Stop_All_Tasks is
+ begin
+ null;
+ end Stop_All_Tasks;
+
+ ---------------
+ -- Stop_Task --
+ ---------------
+
+ function Stop_Task (T : ST.Task_Id) return Boolean is
+ pragma Unreferenced (T);
+ begin
+ return False;
+ end Stop_Task;
+
+ -------------------
+ -- Continue_Task --
+ -------------------
+
+ function Continue_Task (T : ST.Task_Id) return Boolean is
+ pragma Unreferenced (T);
+ begin
+ return False;
+ end Continue_Task;
+
+ ----------------
+ -- Initialize --
+ ----------------
+
+ procedure Initialize (Environment_Task : Task_Id) is
+ act : aliased struct_sigaction;
+ old_act : aliased struct_sigaction;
+ Tmp_Set : aliased sigset_t;
+ Result : Interfaces.C.int;
+
+ function State
+ (Int : System.Interrupt_Management.Interrupt_ID) return Character;
+ pragma Import (C, State, "__gnat_get_interrupt_state");
+ -- Get interrupt state. Defined in a-init.c
+ -- The input argument is the interrupt number,
+ -- and the result is one of the following:
+
+ Default : constant Character := 's';
+ -- 'n' this interrupt not set by any Interrupt_State pragma
+ -- 'u' Interrupt_State pragma set state to User
+ -- 'r' Interrupt_State pragma set state to Runtime
+ -- 's' Interrupt_State pragma set state to System (use "default"
+ -- system handler)
+
+ begin
+ Environment_Task_Id := Environment_Task;
+
+ Interrupt_Management.Initialize;
+
+ -- Prepare the set of signals that should unblocked in all tasks
+
+ Result := sigemptyset (Unblocked_Signal_Mask'Access);
+ pragma Assert (Result = 0);
+
+ for J in Interrupt_Management.Interrupt_ID loop
+ if System.Interrupt_Management.Keep_Unmasked (J) then
+ Result := sigaddset (Unblocked_Signal_Mask'Access, Signal (J));
+ pragma Assert (Result = 0);
+ end if;
+ end loop;
+
+ -- Initialize the lock used to synchronize chain of all ATCBs
+
+ Initialize_Lock (Single_RTS_Lock'Access, RTS_Lock_Level);
+
+ Specific.Initialize (Environment_Task);
+
+ if Use_Alternate_Stack then
+ Environment_Task.Common.Task_Alternate_Stack :=
+ Alternate_Stack'Address;
+ end if;
+
+ -- Make environment task known here because it doesn't go through
+ -- Activate_Tasks, which does it for all other tasks.
+
+ Known_Tasks (Known_Tasks'First) := Environment_Task;
+ Environment_Task.Known_Tasks_Index := Known_Tasks'First;
+
+ Enter_Task (Environment_Task);
+
+ if State
+ (System.Interrupt_Management.Abort_Task_Interrupt) /= Default
+ then
+ act.sa_flags := 0;
+ act.sa_handler := Abort_Handler'Address;
+
+ Result := sigemptyset (Tmp_Set'Access);
+ pragma Assert (Result = 0);
+ act.sa_mask := Tmp_Set;
+
+ Result :=
+ sigaction
+ (Signal (System.Interrupt_Management.Abort_Task_Interrupt),
+ act'Unchecked_Access,
+ old_act'Unchecked_Access);
+ pragma Assert (Result = 0);
+ Abort_Handler_Installed := True;
+ end if;
+ end Initialize;
+
+end System.Task_Primitives.Operations;
--- /dev/null 2012-01-30 20:41:15.189616186 +0100
+++ ./src/gcc/ada/s-osinte-gnu.ads 2012-04-11 19:34:45.000000000 +0200
@@ -0,0 +1,749 @@
+------------------------------------------------------------------------------
+-- --
+-- GNU ADA 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) 1995-2011, 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- --
+-- 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 the GNU/Hurd version of this package
+
+-- This package encapsulates all direct interfaces to OS services
+-- that are needed by children of System.
+
+-- 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 Interfaces.C;
+with Unchecked_Conversion;
+
+package System.OS_Interface is
+ pragma Preelaborate;
+
+ pragma Linker_Options ("-lpthread");
+ pragma Linker_Options ("-lrt");
+
+ subtype int is Interfaces.C.int;
+ subtype char is Interfaces.C.char;
+ subtype short is Interfaces.C.short;
+ subtype long is Interfaces.C.long;
+ subtype unsigned is Interfaces.C.unsigned;
+ subtype unsigned_short is Interfaces.C.unsigned_short;
+ subtype unsigned_long is Interfaces.C.unsigned_long;
+ subtype unsigned_char is Interfaces.C.unsigned_char;
+ subtype plain_char is Interfaces.C.plain_char;
+ subtype size_t is Interfaces.C.size_t;
+
+ -----------
+ -- Errno --
+ -----------
+ -- From /usr/include/i386-gnu/bits/errno.h
+
+ function errno return int;
+ pragma Import (C, errno, "__get_errno");
+
+ EAGAIN : constant := 1073741859;
+ EINTR : constant := 1073741828;
+ EINVAL : constant := 1073741846;
+ ENOMEM : constant := 1073741836;
+ EPERM : constant := 1073741825;
+ ETIMEDOUT : constant := 1073741884;
+
+ -------------
+ -- Signals --
+ -------------
+ -- From /usr/include/i386-gnu/bits/signum.h
+
+ Max_Interrupt : constant := 32;
+ type Signal is new int range 0 .. Max_Interrupt;
+ for Signal'Size use int'Size;
+
+ SIGHUP : constant := 1; -- hangup
+ SIGINT : constant := 2; -- interrupt (rubout)
+ SIGQUIT : constant := 3; -- quit (ASCD FS)
+ SIGILL : constant := 4; -- illegal instruction (not reset)
+ SIGTRAP : constant := 5; -- trace trap (not reset)
+ SIGIOT : constant := 6; -- IOT instruction
+ SIGABRT : constant := 6; -- used by abort, replace SIGIOT in the future
+ SIGEMT : constant := 7; -- EMT instruction
+ SIGFPE : constant := 8; -- floating point exception
+ SIGKILL : constant := 9; -- kill (cannot be caught or ignored)
+ SIGBUS : constant := 10; -- bus error
+ SIGSEGV : constant := 11; -- segmentation violation
+ SIGSYS : constant := 12; -- bad argument to system call
+ SIGPIPE : constant := 13; -- write on a pipe with no one to read it
+ SIGALRM : constant := 14; -- alarm clock
+ SIGTERM : constant := 15; -- software termination signal from kill
+ SIGURG : constant := 16; -- urgent condition on IO channel
+ SIGSTOP : constant := 17; -- stop (cannot be caught or ignored)
+ SIGTSTP : constant := 18; -- user stop requested from tty
+ SIGCONT : constant := 19; -- stopped process has been continued
+ SIGCLD : constant := 20; -- alias for SIGCHLD
+ SIGCHLD : constant := 20; -- child status change
+ SIGTTIN : constant := 21; -- background tty read attempted
+ SIGTTOU : constant := 22; -- background tty write attempted
+ SIGIO : constant := 23; -- I/O possible (Solaris SIGPOLL alias)
+ SIGPOLL : constant := 23; -- I/O possible (same as SIGIO?)
+ SIGXCPU : constant := 24; -- CPU time limit exceeded
+ SIGXFSZ : constant := 25; -- filesize limit exceeded
+ SIGVTALRM : constant := 26; -- virtual timer expired
+ SIGPROF : constant := 27; -- profiling timer expired
+ SIGWINCH : constant := 28; -- window size change
+ SIGINFO : constant := 29; -- information request (NetBSD/FreeBSD)
+ SIGUSR1 : constant := 30; -- user defined signal 1
+ SIGUSR2 : constant := 31; -- user defined signal 2
+ SIGLOST : constant := 32; -- Resource lost (Sun); server died (GNU)
+-- SIGLTHRRES : constant := 32; -- GNU/LinuxThreads restart signal
+-- SIGLTHRCAN : constant := 33; -- GNU/LinuxThreads cancel signal
+-- SIGLTHRDBG : constant := 34; -- GNU/LinuxThreads debugger signal
+
+ 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 := (
+ SIGTRAP,
+ -- To enable debugging on multithreaded applications, mark SIGTRAP to
+ -- be kept unmasked.
+
+ SIGBUS,
+
+ SIGTTIN, SIGTTOU, SIGTSTP,
+ -- Keep these three signals unmasked so that background processes
+ -- and IO behaves as normal "C" applications
+
+ SIGPROF,
+ -- To avoid confusing the profiler
+
+ SIGKILL, SIGSTOP);
+ -- These two signals actually cannot be masked;
+ -- POSIX simply won't allow it.
+
+ Reserved : constant Signal_Set :=
+ -- I am not sure why the following signal is reserved.
+ -- I guess they are not supported by this version of GNU/Hurd.
+ (0 .. 0 => SIGVTALRM);
+
+ type sigset_t is private;
+
+ -- From /usr/include/signal.h /usr/include/i386-gnu/bits/sigset.h
+ function sigaddset (set : access sigset_t; sig : Signal) return int;
+ pragma Import (C, sigaddset, "sigaddset");
+
+ function sigdelset (set : access sigset_t; sig : Signal) return int;
+ pragma Import (C, sigdelset, "sigdelset");
+
+ function sigfillset (set : access sigset_t) return int;
+ pragma Import (C, sigfillset, "sigfillset");
+
+ function sigismember (set : access sigset_t; sig : Signal) return int;
+ pragma Import (C, sigismember, "sigismember");
+
+ function sigemptyset (set : access sigset_t) return int;
+ pragma Import (C, sigemptyset, "sigemptyset");
+
+ -- sigcontext is architecture dependent, so define it private
+ type struct_sigcontext is private;
+
+ -- From /usr/include/i386-gnu/bits/sigaction.h: Note: arg. order differs
+ type struct_sigaction is record
+ sa_handler : System.Address;
+ sa_mask : sigset_t;
+ sa_flags : int;
+ end record;
+ pragma Convention (C, struct_sigaction);
+
+ type struct_sigaction_ptr is access all struct_sigaction;
+
+ -- From /usr/include/i386-gnu/bits/sigaction.h
+ SIG_BLOCK : constant := 1;
+ SIG_UNBLOCK : constant := 2;
+ SIG_SETMASK : constant := 3;
+
+ -- From /usr/include/i386-gnu/bits/signum.h
+ SIG_ERR : constant := 1;
+ SIG_DFL : constant := 0;
+ SIG_IGN : constant := 1;
+ SIG_HOLD : constant := 2;
+
+ -- From /usr/include/i386-gnu/bits/sigaction.h
+ SA_SIGINFO : constant := 16#0040#;
+ SA_ONSTACK : constant := 16#0001#;
+
+ function sigaction
+ (sig : Signal;
+ act : struct_sigaction_ptr;
+ oact : struct_sigaction_ptr) return int;
+ pragma Import (C, sigaction, "sigaction");
+
+ ----------
+ -- Time --
+ ----------
+
+ Time_Slice_Supported : constant Boolean := True;
+ -- Indicates whether time slicing is supported (i.e SCHED_RR is supported)
+
+ type timespec is private;
+
+ function nanosleep (rqtp, rmtp : access timespec) return int;
+ pragma Import (C, nanosleep, "nanosleep");
+
+ type clockid_t is private;
+
+ CLOCK_REALTIME : constant clockid_t;
+
+ -- From: /usr/include/time.h
+ function clock_gettime
+ (clock_id : clockid_t;
+ tp : access timespec)
+ return int;
+ pragma Import (C, clock_gettime, "clock_gettime");
+
+ function To_Duration (TS : timespec) return Duration;
+ pragma Inline (To_Duration);
+
+ function To_Timespec (D : Duration) return timespec;
+ pragma Inline (To_Timespec);
+
+ -- From: /usr/include/unistd.h
+ function sysconf (name : int) return long;
+ pragma Import (C, sysconf);
+
+ -- From /usr/include/i386-gnu/bits/confname.h
+ SC_CLK_TCK : constant := 2;
+ SC_NPROCESSORS_ONLN : constant := 84;
+
+ -------------------------
+ -- Priority Scheduling --
+ -------------------------
+ -- From /usr/include/i386-gnu/bits/sched.h
+
+ SCHED_OTHER : constant := 0;
+ SCHED_FIFO : constant := 1;
+ SCHED_RR : constant := 2;
+
+ function To_Target_Priority
+ (Prio : System.Any_Priority) return Interfaces.C.int;
+ -- Maps System.Any_Priority to a POSIX priority.
+
+ -------------
+ -- Process --
+ -------------
+
+ type pid_t is private;
+
+ -- From: /usr/include/signal.h
+ function kill (pid : pid_t; sig : Signal) return int;
+ pragma Import (C, kill, "kill");
+
+ -- From: /usr/include/unistd.h
+ function getpid return pid_t;
+ pragma Import (C, getpid, "getpid");
+
+ ---------
+ -- LWP --
+ ---------
+
+ -- From: /usr/include/pthread/pthread.h
+ 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");
+
+ -------------
+ -- Threads --
+ -------------
+
+ 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);
+
+ -- From: /usr/include/bits/pthread.h:typedef int __pthread_t;
+ -- /usr/include/pthread/pthreadtypes.h:typedef __pthread_t pthread_t;
+ type pthread_t is new unsigned_long;
+ subtype Thread_Id is pthread_t;
+
+ function To_pthread_t is new Unchecked_Conversion
+ (unsigned_long, pthread_t);
+
+ type pthread_mutex_t is limited private;
+ type pthread_cond_t is limited private;
+ type pthread_attr_t is limited private;
+ type pthread_mutexattr_t is limited private;
+ type pthread_condattr_t is limited private;
+ type pthread_key_t is private;
+
+ -- From /usr/include/pthread/pthreadtypes.h
+ PTHREAD_CREATE_DETACHED : constant := 1;
+ PTHREAD_CREATE_JOINABLE : constant := 0;
+
+ PTHREAD_SCOPE_PROCESS : constant := 1;
+ PTHREAD_SCOPE_SYSTEM : constant := 0;
+
+ -----------
+ -- Stack --
+ -----------
+
+ -- From: /usr/include/i386-gnu/bits/sigstack.h
+ 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 whether the stack base is available on this target
+
+ 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.
+
+ -- From: /usr/include/i386-gnu/bits/shm.h __getpagesize or getpagesize??
+ 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
+
+ -- From /usr/include/i386-gnu/bits/mman.h
+ PROT_NONE : constant := 0;
+ PROT_READ : constant := 4;
+ PROT_WRITE : constant := 2;
+ PROT_EXEC : constant := 1;
+ PROT_ALL : constant := PROT_READ + PROT_WRITE + PROT_EXEC;
+ PROT_ON : constant := PROT_NONE;
+ PROT_OFF : constant := PROT_ALL;
+
+ -- From /usr/include/i386-gnu/bits/mman.h
+ function mprotect (addr : Address; len : size_t; prot : int) return int;
+ pragma Import (C, mprotect);
+
+ ---------------------------------------
+ -- Nonstandard Thread Initialization --
+ ---------------------------------------
+
+ procedure pthread_init;
+ pragma Inline (pthread_init);
+ -- This is a dummy procedure to share some GNULLI files
+
+ -------------------------
+ -- POSIX.1c Section 3 --
+ -------------------------
+
+ -- From: /usr/include/signal.h:
+ -- sigwait (__const sigset_t *__restrict __set, int *__restrict __sig)
+ function sigwait (set : access sigset_t; sig : access Signal) return int;
+ pragma Import (C, sigwait, "sigwait");
+
+ -- From: /usr/include/pthread/pthread.h:
+ -- extern int pthread_kill (pthread_t thread, int signo);
+ function pthread_kill (thread : pthread_t; sig : Signal) return int;
+ pragma Import (C, pthread_kill, "pthread_kill");
+
+ -- From: /usr/include/i386-gnu/bits/sigthread.h
+ -- extern int pthread_sigmask (int __how, __const __sigset_t *__newmask,
+ -- __sigset_t *__oldmask) __THROW;
+ function pthread_sigmask
+ (how : int;
+ set : access sigset_t;
+ oset : access sigset_t) return int;
+ pragma Import (C, pthread_sigmask, "pthread_sigmask");
+
+ --------------------------
+ -- POSIX.1c Section 11 --
+ --------------------------
+
+ -- From: /usr/include/pthread/pthread.h and
+ -- /usr/include/pthread/pthreadtypes.h
+ function pthread_mutexattr_init
+ (attr : access pthread_mutexattr_t) return int;
+ pragma Import (C, pthread_mutexattr_init, "pthread_mutexattr_init");
+
+ function pthread_mutexattr_destroy
+ (attr : access pthread_mutexattr_t) return int;
+ pragma Import (C, pthread_mutexattr_destroy, "pthread_mutexattr_destroy");
+
+ function pthread_mutex_init
+ (mutex : access pthread_mutex_t;
+ attr : access pthread_mutexattr_t) return int;
+ pragma Import (C, pthread_mutex_init, "pthread_mutex_init");
+
+ function pthread_mutex_destroy (mutex : access pthread_mutex_t) return int;
+ pragma Import (C, pthread_mutex_destroy, "pthread_mutex_destroy");
+
+ function pthread_mutex_lock (mutex : access pthread_mutex_t) return int;
+ pragma Import (C, pthread_mutex_lock, "pthread_mutex_lock");
+
+ function pthread_mutex_unlock (mutex : access pthread_mutex_t) return int;
+ pragma Import (C, pthread_mutex_unlock, "pthread_mutex_unlock");
+
+ function pthread_condattr_init
+ (attr : access pthread_condattr_t) return int;
+ pragma Import (C, pthread_condattr_init, "pthread_condattr_init");
+
+ function pthread_condattr_destroy
+ (attr : access pthread_condattr_t) return int;
+ pragma Import (C, pthread_condattr_destroy, "pthread_condattr_destroy");
+
+ function pthread_cond_init
+ (cond : access pthread_cond_t;
+ attr : access pthread_condattr_t) return int;
+ pragma Import (C, pthread_cond_init, "pthread_cond_init");
+
+ function pthread_cond_destroy (cond : access pthread_cond_t) return int;
+ pragma Import (C, pthread_cond_destroy, "pthread_cond_destroy");
+
+ function pthread_cond_signal (cond : access pthread_cond_t) return int;
+ pragma Import (C, pthread_cond_signal, "pthread_cond_signal");
+
+ function pthread_cond_wait
+ (cond : access pthread_cond_t;
+ mutex : access pthread_mutex_t) return int;
+ pragma Import (C, pthread_cond_wait, "pthread_cond_wait");
+
+ function pthread_cond_timedwait
+ (cond : access pthread_cond_t;
+ mutex : access pthread_mutex_t;
+ abstime : access timespec) return int;
+ pragma Import (C, pthread_cond_timedwait, "pthread_cond_timedwait");
+
+ Relative_Timed_Wait : constant Boolean := False;
+ -- pthread_cond_timedwait requires an absolute delay time
+
+ --------------------------
+ -- POSIX.1c Section 13 --
+ --------------------------
+ -- From /usr/include/pthread/pthreadtypes.h
+
+ PTHREAD_PRIO_NONE : constant := 0;
+ PTHREAD_PRIO_PROTECT : constant := 2;
+ PTHREAD_PRIO_INHERIT : constant := 1;
+
+ -- GNU/Hurd does not support Thread Priority Protection or Thread
+ -- Priority Inheritance and lacks some pthread_mutexattr_* functions.
+ -- Replace them with dummy versions.
+
+ -- From: /usr/include/pthread/pthread.h
+ function pthread_mutexattr_setprotocol
+ (attr : access pthread_mutexattr_t;
+ protocol : int) return int;
+
+ function pthread_mutexattr_getprotocol
+ (attr : access pthread_mutexattr_t;
+ protocol : access int) return int;
+
+ function pthread_mutexattr_setprioceiling
+ (attr : access pthread_mutexattr_t;
+ prioceiling : int) return int;
+
+ function pthread_mutexattr_getprioceiling
+ (attr : access pthread_mutexattr_t;
+ prioceiling : access int) return int;
+
+ type struct_sched_param is record
+ sched_priority : int; -- scheduling priority
+ end record;
+ pragma Convention (C, struct_sched_param);
+
+ -- From: /usr/include/pthread/pthread.h
+ -- Dummy versions start
+ function pthread_setschedparam
+ (thread : pthread_t;
+ policy : int;
+ param : access struct_sched_param) return int;
+
+ function pthread_attr_setscope
+ (attr : access pthread_attr_t;
+ contentionscope : int) return int;
+
+ function pthread_attr_getscope
+ (attr : access pthread_attr_t;
+ contentionscope : access int) return int;
+
+ function pthread_attr_setinheritsched
+ (attr : access pthread_attr_t;
+ inheritsched : int) return int;
+
+ function pthread_attr_getinheritsched
+ (attr : access pthread_attr_t;
+ inheritsched : access int) return int;
+
+ function pthread_attr_setschedpolicy
+ (attr : access pthread_attr_t;
+ policy : int) return int;
+ -- Dummy versions end
+
+ function sched_yield return int;
+ pragma Import (C, sched_yield, "sched_yield");
+
+ ---------------------------
+ -- P1003.1c - Section 16 --
+ ---------------------------
+
+ function pthread_attr_init
+ (attributes : access pthread_attr_t) return int;
+ pragma Import (C, pthread_attr_init, "pthread_attr_init");
+
+ function pthread_attr_destroy
+ (attributes : access pthread_attr_t) return int;
+ pragma Import (C, pthread_attr_destroy, "pthread_attr_destroy");
+
+ function pthread_attr_setdetachstate
+ (attr : access pthread_attr_t;
+ detachstate : int) return int;
+ pragma Import
+ (C, pthread_attr_setdetachstate, "pthread_attr_setdetachstate");
+
+ function pthread_attr_setstacksize
+ (attr : access pthread_attr_t;
+ stacksize : size_t) return int;
+ pragma Import (C, pthread_attr_setstacksize, "pthread_attr_setstacksize");
+
+ -- From: /usr/include/pthread/pthread.h
+ function pthread_create
+ (thread : access pthread_t;
+ attributes : access pthread_attr_t;
+ start_routine : Thread_Body;
+ arg : System.Address) return int;
+ pragma Import (C, pthread_create, "pthread_create");
+
+ procedure pthread_exit (status : System.Address);
+ pragma Import (C, pthread_exit, "pthread_exit");
+
+ function pthread_self return pthread_t;
+ pragma Import (C, pthread_self, "pthread_self");
+
+ --------------------------
+ -- POSIX.1c Section 17 --
+ --------------------------
+
+ function pthread_setspecific
+ (key : pthread_key_t;
+ value : System.Address) return int;
+ pragma Import (C, pthread_setspecific, "pthread_setspecific");
+
+ 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);
+ pragma Convention (C, destructor_pointer);
+
+ function pthread_key_create
+ (key : access pthread_key_t;
+ destructor : destructor_pointer) return int;
+ pragma Import (C, pthread_key_create, "pthread_key_create");
+
+ -- From /usr/include/i386-gnu/bits/sched.h
+ -- 1_024 == 1024??
+ CPU_SETSIZE : constant := 1_024;
+
+ type bit_field is array (1 .. CPU_SETSIZE) of Boolean;
+ for bit_field'Size use CPU_SETSIZE;
+ pragma Pack (bit_field);
+ pragma Convention (C, bit_field);
+
+ type cpu_set_t is record
+ bits : bit_field;
+ end record;
+ pragma Convention (C, cpu_set_t);
+
+ -- function pthread_setaffinity_np
+ -- (thread : pthread_t;
+ -- cpusetsize : size_t;
+ -- cpuset : access cpu_set_t) return int;
+ -- pragma Import (C, pthread_setaffinity_np,
+ -- "__gnat_pthread_setaffinity_np");
+
+private
+
+ type sigset_t is array (1 .. 4) of unsigned;
+
+ -- FIXME:
+ -- In GNU/Hurd the component sa_handler turns out to
+ -- be one a union type, and the selector is a macro:
+ -- #define sa_handler __sigaction_handler.sa_handler
+ -- #define sa_sigaction __sigaction_handler.sa_sigaction
+
+ -- In FreeBSD the component sa_handler turns out to
+ -- be one a union type, and the selector is a macro:
+ -- #define sa_handler __sigaction_u._handler
+ -- #define sa_sigaction __sigaction_u._sigaction
+
+ -- Should we add a signal_context type here ?
+ -- How could it be done independent of the CPU architecture ?
+ -- sigcontext type is opaque, so it is architecturally neutral.
+ -- It is always passed as an access type, so define it as an empty record
+ -- since the contents are not used anywhere.
+ type struct_sigcontext is null record;
+ pragma Convention (C, struct_sigcontext);
+
+ type pid_t is new int;
+
+ type time_t is new long;
+
+ type timespec is record
+ tv_sec : time_t;
+ tv_nsec : long;
+ end record;
+ pragma Convention (C, timespec);
+
+ type clockid_t is new int;
+ CLOCK_REALTIME : constant clockid_t := 0;
+
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- typedef struct __pthread_attr pthread_attr_t;
+ -- /usr/include/bits/thread-attr.h: struct __pthread_attr...
+ -- /usr/include/pthread/pthreadtypes.h: enum __pthread_contentionscope
+ -- enum __pthread_detachstate detachstate;
+ -- enum __pthread_inheritsched inheritsched;
+ -- enum __pthread_contentionscope contentionscope;
+ -- Not used: schedpolicy : int;
+ type pthread_attr_t is record
+ schedparam : struct_sched_param;
+ stackaddr : System.Address;
+ stacksize : size_t;
+ guardsize : size_t;
+ detachstate : int;
+ inheritsched : int;
+ contentionscope : int;
+ stackaddr_set : int;
+ end record;
+ pragma Convention (C, pthread_attr_t);
+
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- typedef struct __pthread_condattr pthread_condattr_t;
+ -- From: /usr/include/bits/condition-attr.h:
+ -- struct __pthread_condattr {
+ -- enum __pthread_process_shared pshared;
+ -- __Clockid_T Clock;}
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- enum __pthread_process_shared
+ type pthread_condattr_t is record
+ pshared : int;
+ clock : clockid_t;
+ end record;
+ pragma Convention (C, pthread_condattr_t);
+
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- typedef struct __pthread_mutexattr pthread_mutexattr_t; and
+ -- /usr/include/bits/mutex-attr.h
+ -- struct __pthread_mutexattr {
+ -- Int Prioceiling;
+ -- Enum __Pthread_Mutex_Protocol Protocol;
+ -- Enum __Pthread_Process_Shared Pshared;
+ -- Enum __Pthread_Mutex_Type Mutex_Type;};
+ type pthread_mutexattr_t is record
+ prioceiling : int;
+ protocol : int;
+ pshared : int;
+ mutex_type : int;
+ end record;
+ pragma Convention (C, pthread_mutexattr_t);
+
+ type struct_pthread_fast_lock is record
+ status : long;
+ spinlock : int;
+ end record;
+ pragma Convention (C, struct_pthread_fast_lock);
+
+ -- From: /usr/include/pthread/pthreadtypes.h
+ -- typedef struct __pthread_mutex pthread_mutex_t; and
+ -- /usr/include/bits/mutex.h:
+ -- struct __pthread_mutex {
+ -- __pthread_spinlock_t __held;
+ -- __pthread_spinlock_t __lock;
+ -- /* in cthreads, mutex_init does not initialized the third
+ -- pointer, as such, we cannot rely on its value for anything. */
+ -- char *cthreadscompat1;
+ -- struct __pthread *__queue;
+ -- struct __pthread_mutexattr *attr;
+ -- void *data;
+ -- /* up to this point, we are completely compatible with cthreads
+ -- and what libc expects. */
+ -- void *owner;
+ -- unsigned locks;
+ -- /* if null then the default attributes apply. */
+ -- };
+ -- FIXME!!!
+ type pthread_mutex_t is record
+ held : int;
+ lock : int;
+ cthreadcompat : char;
+ queue : pthread_t;
+ attr : pthread_mutexattr_t;
+ data : System.Address;
+ owner : System.Address;
+ locks : unsigned_long;
+ end record;
+ pragma Convention (C, pthread_mutex_t);
+ -- pointer needed?
+ -- type pthread_mutex_t_ptr is access pthread_mutex_t;
+
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- typedef struct __pthread_cond pthread_cond_t;
+ -- typedef struct __pthread_condattr pthread_condattr_t;
+ -- /usr/include/bits/condition.h:struct __pthread_cond{}
+ -- pthread_condattr_t: see above!
+ -- /usr/include/bits/condition.h: struct __pthread_condimpl *__impl;
+
+ type pthread_cond_t is record
+ lock : int;
+ queue : pthread_t;
+ condattr : pthread_condattr_t;
+ impl : int;
+ -- impl : pthread_condimpl_t; -- FIXME
+ data : System.Address;
+ end record;
+ pragma Convention (C, pthread_cond_t);
+
+ -- From: /usr/include/pthread/pthreadtypes.h:
+ -- typedef __pthread_key pthread_key_t; and
+ -- /usr/include/bits/thread-specific.h:
+ -- typedef int __pthread_key;
+ type pthread_key_t is new int;
+
+end System.OS_Interface;
--- /dev/null 2012-01-30 20:41:15.189616186 +0100
+++ ./src/gcc/ada/s-osinte-gnu.adb 2012-04-11 22:56:06.000000000 +0200
@@ -0,0 +1,231 @@
+------------------------------------------------------------------------------
+-- --
+-- 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 the GNU/Hurd 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.
+
+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;
+
+ -----------------------------------
+ -- pthread_mutexattr_setprotocol --
+ -----------------------------------
+
+ function pthread_mutexattr_setprotocol
+ (attr : access pthread_mutexattr_t;
+ protocol : int) return int is
+ pragma Unreferenced (attr, protocol);
+ begin
+ return 0;
+ end pthread_mutexattr_setprotocol;
+
+ -----------------------------------
+ -- pthread_mutexattr_getprotocol --
+ -----------------------------------
+
+ function pthread_mutexattr_getprotocol
+ (attr : access pthread_mutexattr_t;
+ protocol : access int) return int is
+ pragma Unreferenced (attr, protocol);
+ begin
+ return 0;
+ end pthread_mutexattr_getprotocol;
+
+ --------------------------------------
+ -- pthread_mutexattr_setprioceiling --
+ --------------------------------------
+
+ function pthread_mutexattr_setprioceiling
+ (attr : access pthread_mutexattr_t;
+ prioceiling : int) return int is
+ pragma Unreferenced (attr, prioceiling);
+ begin
+ return 0;
+ end pthread_mutexattr_setprioceiling;
+
+ --------------------------------------
+ -- pthread_mutexattr_getprioceiling --
+ --------------------------------------
+
+ function pthread_mutexattr_getprioceiling
+ (attr : access pthread_mutexattr_t;
+ prioceiling : access int) return int is
+ pragma Unreferenced (attr, prioceiling);
+ begin
+ return 0;
+ end pthread_mutexattr_getprioceiling;
+
+ ---------------------------
+ -- pthread_setschedparam --
+ ---------------------------
+
+ function pthread_setschedparam
+ (thread : pthread_t;
+ policy : int;
+ param : access struct_sched_param) return int is
+ pragma Unreferenced (thread, policy, param);
+ begin
+ return 0;
+ end pthread_setschedparam;
+
+ ---------------------------
+ -- pthread_attr_setscope --
+ ---------------------------
+
+ function pthread_attr_setscope
+ (attr : access pthread_attr_t;
+ contentionscope : int) return int is
+ pragma Unreferenced (attr, contentionscope);
+ begin
+ return 0;
+ end pthread_attr_setscope;
+
+ ---------------------------
+ -- pthread_attr_setscope --
+ ---------------------------
+
+ function pthread_attr_getscope
+ (attr : access pthread_attr_t;
+ contentionscope : access int) return int is
+ pragma Unreferenced (attr, contentionscope);
+ begin
+ return 0;
+ end pthread_attr_getscope;
+
+ ----------------------------------
+ -- pthread_attr_setinheritsched --
+ ----------------------------------
+
+ function pthread_attr_setinheritsched
+ (attr : access pthread_attr_t;
+ inheritsched : int) return int is
+ pragma Unreferenced (attr, inheritsched);
+ begin
+ return 0;
+ end pthread_attr_setinheritsched;
+
+ ----------------------------------
+ -- pthread_attr_getinheritsched --
+ ----------------------------------
+
+ function pthread_attr_getinheritsched
+ (attr : access pthread_attr_t;
+ inheritsched : access int) return int is
+ pragma Unreferenced (attr, inheritsched);
+ begin
+ return 0;
+ end pthread_attr_getinheritsched;
+
+ ----------------------------------
+ -- pthread_attr_getinheritsched --
+ ----------------------------------
+
+ function pthread_attr_setschedpolicy
+ (attr : access pthread_attr_t;
+ policy : int) return int is
+ pragma Unreferenced (attr, policy);
+ begin
+ return 0;
+ end pthread_attr_setschedpolicy;
+
+ -----------------
+ -- 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;
+
+ ------------------------
+ -- 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;
+
+end System.OS_Interface;
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