* Thread support for VxWorks
@ 1998-02-05 17:44 Mike Stump
1998-04-03 21:52 ` Jeffrey A Law
0 siblings, 1 reply; 3+ messages in thread
From: Mike Stump @ 1998-02-05 17:44 UTC (permalink / raw)
To: egcs
Here is a first cut at thread support for C++ EH. I noticed that the
FSF doesn't have thread support yet, does someone want to work on
getting all the threading work into the FSF tree?
1998-02-05 Mike Stump <mrs@wrs.com>
* gthr.h: Support systems that don't have weak, but have threads.
* configure.in (*wrs-vxworks*): Use VxWorks threads by default.
* gthr-vxworks.h: New file.
* objc/thr-vxworks.h: Dummy file from thr-single.c for now.
Doing diffs in .:
*** ./gcc/gthr.h.~1~ Thu Jan 15 17:14:23 1998
--- ./gcc/gthr.h Thu Feb 5 15:02:58 1998
*************** Boston, MA 02111-1307, USA. */
*** 82,90 ****
#include "gthr-solaris.h"
/* Include GTHREAD_FILE if one is defined. */
! #elif SUPPORTS_WEAK && HAVE_GTHR_DEFAULT
#ifndef GTHREAD_USE_WEAK
#define GTHREAD_USE_WEAK 1
#endif
#include "gthr-default.h"
--- 82,92 ----
#include "gthr-solaris.h"
/* Include GTHREAD_FILE if one is defined. */
! #elif defined(HAVE_GTHR_DEFAULT)
! #if SUPPORTS_WEAK
#ifndef GTHREAD_USE_WEAK
#define GTHREAD_USE_WEAK 1
+ #endif
#endif
#include "gthr-default.h"
*** ./gcc/configure.in.~1~ Mon Feb 2 17:22:10 1998
--- ./gcc/configure.in Tue Feb 3 14:16:05 1998
*************** case x${enable_threads} in
*** 114,120 ****
target_thread_file=''
;;
xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
! xsolaris | xwin32 | xdce)
target_thread_file=$enable_threads
;;
*)
--- 114,120 ----
target_thread_file=''
;;
xdecosf1 | xirix | xmach | xos2 | xposix | xpthreads | xsingle | \
! xsolaris | xwin32 | xdce | xvxworks)
target_thread_file=$enable_threads
;;
*)
*************** for machine in $build $host $target; do
*** 304,313 ****
tm_file="${tm_file} dbxcoff.h a29k/udi.h"
tmake_file=a29k/t-a29kbare
;;
! a29k-*-vxworks*)
tm_file="${tm_file} dbxcoff.h a29k/udi.h a29k/vx29k.h"
tmake_file=a29k/t-vx29k
extra_parts="crtbegin.o crtend.o"
;;
a29k-*-*) # Default a29k environment.
use_collect2=yes
--- 304,314 ----
tm_file="${tm_file} dbxcoff.h a29k/udi.h"
tmake_file=a29k/t-a29kbare
;;
! a29k-wrs-vxworks*)
tm_file="${tm_file} dbxcoff.h a29k/udi.h a29k/vx29k.h"
tmake_file=a29k/t-vx29k
extra_parts="crtbegin.o crtend.o"
+ thread_file='vxworks'
;;
a29k-*-*) # Default a29k environment.
use_collect2=yes
*************** for machine in $build $host $target; do
*** 1099,1114 ****
--- 1100,1118 ----
tm_file="${tm_file} i960/vx960.h"
tmake_file=i960/t-vxworks960
use_collect2=yes
+ thread_file='vxworks'
;;
i960-wrs-vxworks5* | i960-wrs-vxworks)
tm_file="${tm_file} dbxcoff.h i960/i960-coff.h i960/vx960-coff.h"
tmake_file=i960/t-vxworks960
use_collect2=yes
+ thread_file='vxworks'
;;
i960-wrs-vxworks*)
tm_file="${tm_file} i960/vx960.h"
tmake_file=i960/t-vxworks960
use_collect2=yes
+ thread_file='vxworks'
;;
i960-*-coff*)
tm_file="${tm_file} dbxcoff.h i960/i960-coff.h libgloss.h"
*************** for machine in $build $host $target; do
*** 1419,1424 ****
--- 1423,1429 ----
tm_file=m68k/vxm68k.h
tmake_file=m68k/t-vxworks68
extra_headers=math-68881.h
+ thread_file='vxworks'
;;
m68k-*-aout*)
tmake_file=m68k/t-m68kbare
*************** for machine in $build $host $target; do
*** 2161,2172 ****
thread_file='posix'
fi
;;
! powerpc-*-vxworks*)
cpu_type=rs6000
xm_file=rs6000/xm-sysv4.h
tm_file=rs6000/vxppc.h
tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
extra_headers=ppc-asm.h
;;
powerpcle-*-sysv* | powerpcle-*-elf*)
tm_file=rs6000/sysv4le.h
--- 2166,2178 ----
thread_file='posix'
fi
;;
! powerpc-wrs-vxworks*)
cpu_type=rs6000
xm_file=rs6000/xm-sysv4.h
tm_file=rs6000/vxppc.h
tmake_file="rs6000/t-ppcgas rs6000/t-ppccomm"
extra_headers=ppc-asm.h
+ thread_file='vxworks'
;;
powerpcle-*-sysv* | powerpcle-*-elf*)
tm_file=rs6000/sysv4le.h
*************** for machine in $build $host $target; do
*** 2298,2303 ****
--- 2304,2310 ----
tm_file=sparc/vxsparc.h
tmake_file=sparc/t-vxsparc
use_collect2=yes
+ thread_file='vxworks'
;;
sparc-*-aout*)
tmake_file=sparc/t-sparcbare
*** ./gcc/gthr-vxworks.h.~1~ Fri Jan 30 11:29:49 1998
--- ./gcc/gthr-vxworks.h Wed Feb 4 19:42:45 1998
***************
*** 0 ****
--- 1,132 ----
+ /* Threads compatibily routines for libgcc2 for VxWorks. */
+ /* Compile this one with gcc. */
+ /* Copyright (C) 1997 Free Software Foundation, Inc.
+ Contributed by Mike Stump <mrs@wrs.com>.
+
+ This file is part of GNU CC.
+
+ GNU CC is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, or (at your option)
+ any later version.
+
+ GNU CC is distributed in the hope that it will be useful,
+ but WITHOUT 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
+ along with GNU CC; see the file COPYING. If not, write to
+ the Free Software Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+ /* As a special exception, if you link this library with other files,
+ some of which are compiled with GCC, to produce an executable,
+ this library 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 General Public License. */
+
+ #ifndef __gthr_vxworks_h
+ #define __gthr_vxworks_h
+
+ /* POSIX threads specific definitions.
+ Easy, since the interface is just one-to-one mapping. */
+
+ #define __GTHREADS 1
+
+ #include <vxWorks.h>
+ #include <semLib.h>
+ /* typedef void *SEM_ID; */
+
+ typedef int __gthread_key_t;
+ typedef char __gthread_once_t;
+ typedef SEM_ID __gthread_mutex_t;
+
+ #define __GTHREAD_MUTEX_INIT 0
+ #define __GTHREAD_ONCE_INIT 0
+
+ #ifndef REG_SAVED_REG
+ static inline int
+ __gthread_once (__gthread_once_t *once, void (*func) ())
+ {
+ (*func)();
+ return 0;
+ }
+
+ extern __gthread_key_t eh_context_key;
+
+ /* This is not the right way to do it, but the semantic of pthreads
+ don't map well enough onto VxWorks. */
+
+ static void
+ __ehdtor ()
+ {
+ if (eh_context_key)
+ free ((void*)eh_context_key);
+ eh_context_key = 0;
+ }
+
+ /* This only works for the code in libgcc2.c. */
+
+ static inline int
+ __gthread_key_create (__gthread_key_t *key, void (*dtor) (void *))
+ {
+ *key = 0;
+
+ /* We don't have a way to track dtor here, so instead, we
+ register a generic routine that can cleanup any task. */
+
+ taskDeleteHookAdd (__ehdtor);
+
+ return 0;
+ }
+
+ #define __gthread_setspecific(key, ptr) \
+ (key = (int) ptr, 0)
+
+ static inline int
+ __gthread_key_dtor (__gthread_key_t key, void *ptr)
+ {
+ /* Just reset the key value to zero. */
+ if (ptr)
+ return __gthread_setspecific (key, 0);
+ else
+ return 0;
+ }
+
+ #define __gthread_key_delete(key) \
+ taskVarDelete (taskIdSelf (), &key)
+
+ #define __gthread_getspecific(key) \
+ ((key == 0) \
+ ? ((taskVarAdd (taskIdSelf (), &key) != OK) \
+ ? (__terminate (), (void*)0) \
+ : (void*)0) \
+ : (void*)key)
+ #endif
+
+ static inline int
+ __gthread_mutex_lock (__gthread_mutex_t *mutex)
+ {
+ if (*mutex == 0)
+ *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
+ return semTake (*mutex, WAIT_FOREVER);
+ }
+
+ static inline int
+ __gthread_mutex_trylock (__gthread_mutex_t *mutex)
+ {
+ if (*mutex == 0)
+ *mutex = semMCreate (SEM_Q_PRIORITY | SEM_INVERSION_SAFE | SEM_DELETE_SAFE);
+ return semTake (*mutex, NO_WAIT);
+ }
+
+ static inline int
+ __gthread_mutex_unlock (__gthread_mutex_t *mutex)
+ {
+ /* We could return the */
+ return semGive (*mutex);
+ }
+
+ #endif /* not __gthr_vxworks_h */
*** ./gcc/objc/thr-vxworks.c.~1~ Fri Jan 30 11:41:12 1998
--- ./gcc/objc/thr-vxworks.c Mon Feb 2 17:57:00 1998
***************
*** 0 ****
--- 1,192 ----
+ /* GNU Objective C Runtime Thread Implementation
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ Contributed by Galen C. Hunt (gchunt@cs.rochester.edu)
+
+ This file is part of GNU CC.
+
+ GNU CC is free software; you can redistribute it and/or modify it under the
+ terms of the GNU General Public License as published by the Free Software
+ Foundation; either version 2, or (at your option) any later version.
+
+ GNU CC is distributed in the hope that it will be useful, but WITHOUT 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 along with
+ GNU CC; see the file COPYING. If not, write to the Free Software
+ Foundation, 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+ /* As a special exception, if you link this library with files compiled with
+ GCC to produce an executable, this does not 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 General Public License. */
+
+ #include <objc/thr.h>
+ #include "runtime.h"
+
+ /* Thread local storage for a single thread */
+ static void *thread_local_storage = NULL;
+
+ /* Backend initialization functions */
+
+ /* Initialize the threads subsystem. */
+ int
+ __objc_init_thread_system(void)
+ {
+ /* No thread support available */
+ return -1;
+ }
+
+ /* Close the threads subsystem. */
+ int
+ __objc_close_thread_system(void)
+ {
+ /* No thread support available */
+ return -1;
+ }
+
+ /* Backend thread functions */
+
+ /* Create a new thread of execution. */
+ objc_thread_t
+ __objc_thread_detach(void (*func)(void *arg), void *arg)
+ {
+ /* No thread support available */
+ return NULL;
+ }
+
+ /* Set the current thread's priority. */
+ int
+ __objc_thread_set_priority(int priority)
+ {
+ /* No thread support available */
+ return -1;
+ }
+
+ /* Return the current thread's priority. */
+ int
+ __objc_thread_get_priority(void)
+ {
+ return OBJC_THREAD_INTERACTIVE_PRIORITY;
+ }
+
+ /* Yield our process time to another thread. */
+ void
+ __objc_thread_yield(void)
+ {
+ return;
+ }
+
+ /* Terminate the current thread. */
+ int
+ __objc_thread_exit(void)
+ {
+ /* No thread support available */
+ /* Should we really exit the program */
+ /* exit(&__objc_thread_exit_status); */
+ return -1;
+ }
+
+ /* Returns an integer value which uniquely describes a thread. */
+ objc_thread_t
+ __objc_thread_id(void)
+ {
+ /* No thread support, use 1. */
+ return (objc_thread_t)1;
+ }
+
+ /* Sets the thread's local storage pointer. */
+ int
+ __objc_thread_set_data(void *value)
+ {
+ thread_local_storage = value;
+ return 0;
+ }
+
+ /* Returns the thread's local storage pointer. */
+ void *
+ __objc_thread_get_data(void)
+ {
+ return thread_local_storage;
+ }
+
+ /* Backend mutex functions */
+
+ /* Allocate a mutex. */
+ int
+ __objc_mutex_allocate(objc_mutex_t mutex)
+ {
+ return 0;
+ }
+
+ /* Deallocate a mutex. */
+ int
+ __objc_mutex_deallocate(objc_mutex_t mutex)
+ {
+ return 0;
+ }
+
+ /* Grab a lock on a mutex. */
+ int
+ __objc_mutex_lock(objc_mutex_t mutex)
+ {
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+ }
+
+ /* Try to grab a lock on a mutex. */
+ int
+ __objc_mutex_trylock(objc_mutex_t mutex)
+ {
+ /* There can only be one thread, so we always get the lock */
+ return 0;
+ }
+
+ /* Unlock the mutex */
+ int
+ __objc_mutex_unlock(objc_mutex_t mutex)
+ {
+ return 0;
+ }
+
+ /* Backend condition mutex functions */
+
+ /* Allocate a condition. */
+ int
+ __objc_condition_allocate(objc_condition_t condition)
+ {
+ return 0;
+ }
+
+ /* Deallocate a condition. */
+ int
+ __objc_condition_deallocate(objc_condition_t condition)
+ {
+ return 0;
+ }
+
+ /* Wait on the condition */
+ int
+ __objc_condition_wait(objc_condition_t condition, objc_mutex_t mutex)
+ {
+ return 0;
+ }
+
+ /* Wake up all threads waiting on this condition. */
+ int
+ __objc_condition_broadcast(objc_condition_t condition)
+ {
+ return 0;
+ }
+
+ /* Wake up one thread waiting on this condition. */
+ int
+ __objc_condition_signal(objc_condition_t condition)
+ {
+ return 0;
+ }
+
+ /* End of File */
--------------
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Thread support for VxWorks
1998-02-05 17:44 Thread support for VxWorks Mike Stump
@ 1998-04-03 21:52 ` Jeffrey A Law
0 siblings, 0 replies; 3+ messages in thread
From: Jeffrey A Law @ 1998-04-03 21:52 UTC (permalink / raw)
To: Mike Stump; +Cc: egcs, wilson
In message <199802052340.PAA23288@kankakee.wrs.com>you write:
> Here is a first cut at thread support for C++ EH. I noticed that the
> FSF doesn't have thread support yet, does someone want to work on
> getting all the threading work into the FSF tree?
>
> 1998-02-05 Mike Stump <mrs@wrs.com>
>
> * gthr.h: Support systems that don't have weak, but have threads.
> * configure.in (*wrs-vxworks*): Use VxWorks threads by default.
> * gthr-vxworks.h: New file.
> * objc/thr-vxworks.h: Dummy file from thr-single.c for now.
Nobody seemed to want to comment on this patch. I don't see that
it'll break anything but possibly VxWorks. I went ahead and installed
it.
If it causes any problems we'll just have to deal with them.
jeff
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Thread support for VxWorks
@ 1998-04-03 21:52 Mike Stump
0 siblings, 0 replies; 3+ messages in thread
From: Mike Stump @ 1998-04-03 21:52 UTC (permalink / raw)
To: law; +Cc: egcs
> Date: Fri, 03 Apr 1998 00:15:34 -0700
> From: Jeffrey A Law <law@hurl.cygnus.com>
> Nobody seemed to want to comment on this patch.
Some days are like that.
> I don't see that it'll break anything but possibly VxWorks. I went
> ahead and installed it.
> If it causes any problems we'll just have to deal with them.
It anything arises, just let me know and I will try and bump it up and
work on it myself. I'll keep an eye out for problems.
Thanks.
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~1998-04-03 21:52 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
1998-02-05 17:44 Thread support for VxWorks Mike Stump
1998-04-03 21:52 ` Jeffrey A Law
1998-04-03 21:52 Mike Stump
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).