PostgresSQL on QNX 4
--------------------
+last updated: $Date: 2001/05/24 15:53:31 $
+
+current maintainer: Bernd Tegge (tegge@repas-aeg.de)
+original author: Andreas Kardos (kardos@repas-aeg.de)
This port is an important step because PostgreSQL is now the only free
relational database with full SQL and ODBC support available for QNX 4.
Database Server (not supported for Digital Unix).
The most effort required the emulation of System V semaphore sets,
-shared memory and IPC and of some IEEE floating-point functionality. For
-the Watcom compiler spinlocks have been implemented using POSIX semaphores.
+shared memory and IPC and of some IEEE floating-point functionality.
-It is recomended to use the GNU C compiler instead of the Watcom compiler
+It is recommended to use the GNU C compiler instead of the Watcom compiler
because the Watcom compiler doesn't support a int8 datatype (long or
-long long int) and it does not have a C++ frontend.
-It could be managed to build postgres using the Watcom compiler but it crashes
-quite early. These problems probably could be solved. The only advantage would
-be support of Tk and pgaccess. For the Watcom compiler some more modifications
-have to be made which are not described here.
+long long int) and it does not have a C++ frontend. The only advantage
+using Watcom C would be support of Tk and pgaccess.
QNX 4 does not offer native support of shared libraries. Therefore the related
functionality cannot be used. Shared library support could probably be
implemented in future.
-QNX 4 does not support UNIX domain sockets. Connections can only be made
-with TCP/IP sockets. Therefore postmaster must always be started with the
--i option. Furthermore it would be useful to set the PGHOST variable.
+QNX 4 does not support UNIX domain sockets. Clients must use TCP/IP sockets.
+Therefore postmaster must always be started with the -i option. Furthermore
+it would be useful to set the PGHOST variable.
Prerequisites:
--------------
The following prerequisites have been used:
-QNX 4.25
-Watcom C 10.6
-GNU make
+QNX standard:
+QNX 4.25, Watcom C 10.6, GNU make
+
+Available from http://www.teaser.fr/~jcmichot/
flex-2.5.4a.tar.gz (flex)
-egcs111-qnx4-r20.tar[.gz] (GNU C)
+egcs-112-qnx4-r20.tar[.gz] (GNU C)
+
+Available from ftp://ftp.visi.com/users/hawkeyd/qnx/
+bison-1.2.5.tar.gz
+
+Available from http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/
perl 5.004_04
+
+from ftp://ftp.freesoftware.com/pub/infozip/zlib/
+zlib 1.1.3
+
tcl8.0.3.tar.Z (Tcl)
+In order to achieve meaningful results for the regression tests, you need
+a different shell. The standard QNX shell is quite broken with regard to
+scripting (even QSSL suggested to use pdksh or bash). Both are available
+in source and binaries at
+http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/
+
flex can be built without any problems using the Watcom or GNU C compilers.
+The current version of bison (1.2.8 at the time of this writing) does not
+build cleanly on QNX4 with gcc installed, but you can download src and
+binary of a previous version from the above mentioned ftp site.
+
+download source
GNU C can be installed by
-/etc/install -u egcs111-qnx4-r20.tar[.gz]
+/etc/install -u egcs112-qnx4-r20.tar[.gz]
Although Tcl can be built after some slight code changes using the Watcom
compiler, the GNU C compiler should be used instead. Otherwise it would be
impossible to link postgres built with GNU C together with libtcl8.0.a built
-with the Watcom compiler.
+with the Watcom compiler. However, if you are going to build a Watcom version
+you must build the tcl and tk libraries with Watcom too.
+
To make unix/tclUnixTest.c compilable uncomment
#include <sys/resource.h>
in it or
ln -s /usr/src/pgsql/src/backend/port/qnx4/shm.h /usr/include/sys/shm.h
For ecgs-2.91.60 the file
-/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.60/include/g++/stl_alloc.h
+/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.66/include/g++/stl_alloc.h
had to be patched (extern "C++" { ... } // extern "C++").
See attached patch.
-If you use another ecpg version the include/g++ path in Makefile.qnx4
-(CXXFLAGS) has to be adopted.
-
If all prerequisites are available postgres can be built and installed by
cd pgsql/src
-./configure --with-tcl --with-perl --with-x
-gmake all > make.log 2>&1
+./configure --with-tcl --without-tk --with-perl
+gmake > make.log 2>&1
gmake install > make.install.log 2>&1
su
cd interfaces/perl5
interfaces/ecpg/preproc/preproc.y due to exceeded maximum table size. You can
generate the gram.h, parse.h, preproc.h and preproc.c files on another platform
and use them. This is only a problem when you use the current source tree since
-parse.h, gram.c, preproc.h and preporc.c are included in official
-distributions.
+parse.h, gram.c, preproc.h and preproc.c are included in official
+distributions. In order to avoid this, install the bison binary mentioned
+above.
Regression tests:
-----------------
+please don't use the QNX shell for the parallel regression tests. Download
+bash from quics.qnx.com and run 'make SHELL=/usr/local/bin/bash check'
+instead.
The majority of regression tests succeeded. The following tests failed:
"insert into rtest_emp values ('wiech', '5000.00');"
Subject of further investigation.
-create_function_2, triggers, misc, plpgsql:
+create_function_1, create_function_2, create_type, create_operator,
+create_view, select_views, triggers, misc, plpgsql:
Error messages due to the lack of shared library support.
numeric, numeric_big, sanity_check:
these numeric tests take a long time.
The diffence in sanity_check.out is a consequence of this problem only.
-The reached state of this port should be sufficient for lot of applications.
+The current state of this port should be sufficient for lot of applications.
+
+The Watcom version failed additional tests because of the lack of int8
+support.
Have fun!
Andreas Kardos
-kardos@repas-aeg.de
2000-04-04
+Bernd Tegge
+tegge@repas-aeg.de
+2001-03-01
---------------------------------------------------------------------------
#
# Copyright (c) 1994, Regents of the University of California
#
-# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.71 2001/04/23 20:27:55 petere Exp $
+# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.72 2001/05/24 15:53:32 momjian Exp $
#
#-------------------------------------------------------------------------
ifeq ($(PORTNAME), qnx4)
# This file crashes qnx4's wlink and is therefore not in
# bootstrap/SUBSYS.o on that platform. (Wotta hack ... is it still
-# necessary?)
+# necessary?) [ Yes, until the Watcom compiler goes open source it's
+# effectively unsupported ]
OBJS+= bootstrap/bootstrap.o
endif
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/sem.c,v 1.4 2001/02/02 18:21:58 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/sem.c,v 1.5 2001/05/24 15:53:33 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include "storage/ipc.h"
#include "storage/proc.h"
#include <sys/sem.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
-#define SETMAX ((MAXBACKENDS + PROC_NSEMS_PER_SET - 1) / PROC_NSEMS_PER_SET)
+#define SETMAX ((MAXBACKENDS + PROC_NSEMS_PER_SET + 1) / PROC_NSEMS_PER_SET)
#define SEMMAX (PROC_NSEMS_PER_SET+1)
#define OPMAX 8
#define MODE 0700
-#define SHM_INFO_NAME "SysV_Sem_Info"
+#define SHM_INFO_NAME "PgSysV_Sem_Info"
struct pending_ops
static struct sem_info *SemInfo = (struct sem_info *) - 1;
+/* ----------------------------------------------------------------
+ * semclean - remove the shared memory file on exit
+ * only called by the process which created the shm file
+ * ----------------------------------------------------------------
+ */
+
+static void
+semclean( void )
+{
+ remove( "/dev/shmem/" SHM_INFO_NAME );
+}
int
semctl(int semid, int semnum, int cmd, /* ... */ union semun arg)
semid,
semnum /* , semnum1 */ ;
int exist = 0;
+ struct stat statbuf;
if (nsems < 0 || nsems > SEMMAX)
{
return fd;
/* The size may only be set once. Ignore errors. */
ltrunc(fd, sizeof(struct sem_info), SEEK_SET);
+ if ( fstat( fd, &statbuf ) ) /* would be strange : the only doc'ed */
+ { /* error is EBADF */
+ close( fd );
+ return -1;
+ }
+ /*
+ * size is rounded by proc to the next __PAGESIZE
+ */
+ if ( statbuf.st_size !=
+ ((( sizeof(struct sem_info) /__PAGESIZE)+1) * __PAGESIZE) )
+ {
+ fprintf( stderr,
+ "Found a pre-existing shared memory block for the semaphore memory\n"
+ "of a different size (%ld instead %ld). Make sure that all executables\n"
+ "are from the same release or remove the file \"/dev/shmem/%s\"\n"
+ "left by a previous version.\n", statbuf.st_size,
+ sizeof(struct sem_info), SHM_INFO_NAME);
+ errno = EACCES;
+ return -1;
+ }
SemInfo = mmap(NULL, sizeof(struct sem_info),
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (SemInfo == MAP_FAILED)
for (semid = 0; semid < SETMAX; semid++)
SemInfo->set[semid].key = -1;
sem_post(&SemInfo->sem);
+ on_proc_exit( semclean, NULL );
}
}
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/shm.c,v 1.4 2001/03/22 03:59:43 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/shm.c,v 1.5 2001/05/24 15:53:33 momjian Exp $
*
*-------------------------------------------------------------------------
*/
#include <errno.h>
#include <fcntl.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/shm.h>
+#include <sys/stat.h>
#define MODE 0777
static int shm_getinfo(int shmid, struct shm_info * info);
static int shm_getinfobyaddr(const void *addr, struct shm_info * info);
+static char *
+keytoname(key_t key, char *name)
+{
+ sprintf( name,"PgShm%x", key );
+ return name;
+}
static int
shm_putinfo(struct shm_info * info)
{
struct shm_info info;
char name[NAME_MAX + 1];
+ int result;
+ int fd;
+ struct stat statbuf;
- if (cmd == IPC_RMID)
+
+ switch( cmd )
{
+ case IPC_RMID :
if (shm_getinfo(shmid, &info) == -1)
{
errno = EACCES;
return -1;
}
- return shm_unlink(itoa(info.key, name, 16));
+ close( info.shmid );
+ keytoname(info.key, name);
+ return shm_unlink( name );
+
+ case IPC_STAT :
+ /*
+ * we have to open it first. stat() does no prefix tracking
+ * -> the call would go to fsys instead of proc
+ */
+ keytoname(shmid, name);
+ fd = shm_open( name, 0, MODE );
+ if ( fd >= 0 )
+ {
+ result = fstat( fd, &statbuf );
+ /*
+ * if the file exists, subtract 2 from linkcount :
+ * one for our own open and one for the dir entry
+ */
+ if ( ! result )
+ buf->shm_nattch = statbuf.st_nlink-2;
+ close( fd );
+ return result;
}
- if (cmd == IPC_STAT)
+ else
{
-
/*
- * Can we support IPC_STAT? We only need shm_nattch ... For now,
- * punt and assume the shm seg does not exist.
+ * if there's no entry for this key it doesn't matter
+ * the next shmget() would get a different shm anyway
*/
- errno = EINVAL;
- return -1;
+ buf->shm_nattch = 0;
+ return 0;
+ }
}
errno = EINVAL;
return -1;
else
oflag |= O_RDONLY;
}
- info.shmid = shm_open(itoa(key, name, 16), oflag, MODE);
+ info.shmid = shm_open(keytoname(key, name), oflag, MODE);
/* store shared memory information */
if (info.shmid != -1)
info.key = key;
info.size = size;
info.addr = NULL;
- if (shm_putinfo(&info) == -1)
+ if (shm_putinfo(&info) == -1) {
+ close( info.shmid );
+ if ( (oflag & (O_CREAT|O_EXCL)) == (O_CREAT|O_EXCL) ) {
+ shm_unlink( name );
+ }
return -1;
+ }
}
/* The size may only be set once. Ignore errors. */
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/tstsem.c,v 1.3 2000/04/12 17:15:30 momjian Exp $
+ * $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/tstsem.c,v 1.4 2001/05/24 15:53:33 momjian Exp $
*
*-------------------------------------------------------------------------
*/
printf("semval = %d\n", i);
}
+void on_proc_exit( void (*function)(), Datum arg )
+{
+ atexit( function );
+}
int
main(int argc, char **argv)
{
#!/bin/sh
#
-# $Header: /cvsroot/pgsql/src/bin/ipcclean/Attic/ipcclean.sh,v 1.10 2001/02/10 10:27:28 petere Exp $
+# $Header: /cvsroot/pgsql/src/bin/ipcclean/Attic/ipcclean.sh,v 1.11 2001/05/24 15:53:33 momjian Exp $
#
CMDNAME=`basename $0`
# List of platform-specific hacks
# Feel free to add yours here.
#-----------------------------------
-
+#
+# This is QNX 4.25
+#
+if [ `uname` = 'QNX' ]; then
+ if ps -eA | grep -s '[p]ostmaster' >/dev/null 2>&1 ; then
+ echo "$CMDNAME: You still have a postmaster running." 1>&2
+ exit 1
+ fi
+ rm -f /dev/shmem/PgS*
+ exit $?
+fi
#
# This is based on RedHat 5.2.
#
#include <ioctl.h> /* for unix.h */
#include <unix.h>
#include <sys/select.h> /* for select */
-#if !defined(__GNUC__)
-#include <semaphore.h> /* for sem_t */
-#endif
#define HAS_TEST_AND_SET
-#define HAVE_STRING_H
#undef HAVE_GETRUSAGE
typedef u_short ushort;
-#if defined(__GNUC__)
typedef unsigned char slock_t;
-#else
-typedef sem_t slock_t;
-
-#endif
-
extern int isnan(double dsrc);
extern double rint(double x);
*
*
* IDENTIFICATION
- * $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.92 2001/04/13 23:32:57 tgl Exp $
+ * $Header: /cvsroot/pgsql/src/include/storage/s_lock.h,v 1.93 2001/05/24 15:53:34 momjian Exp $
*
*-------------------------------------------------------------------------
*/
*/
-#if defined(__i386__) && !defined(__QNX__)
+#if defined(__i386__)
#define TAS(lock) tas(lock)
static __inline__ int
#endif /* __hpux */
-
-#if defined(__QNX__)
+#if defined(__QNX__) && defined(__WATCOMC__)
/*
- * QNX 4
- *
- * Note that slock_t under QNX is sem_t instead of char
+ * QNX 4 using WATCOM C
*/
-#define TAS(lock) (sem_trywait((lock)) < 0)
-#define S_UNLOCK(lock) sem_post((lock))
-#define S_INIT_LOCK(lock) sem_init((lock), 1, 1)
-#define S_LOCK_FREE(lock) ((lock)->value)
-#endif /* __QNX__ */
+#define TAS(lock) wc_tas(lock)
+extern slock_t wc_tas(volatile slock_t *lock);
+#pragma aux wc_tas =\
+ " mov al,1 " \
+ " lock xchg al,[esi]" \
+ parm [esi] \
+ value [al];
+
+#endif /* __QNX__ and __WATCOMC__*/
#if defined(__sgi)
/****************************************************************************
* Platform-independent out-of-line support routines
*/
-
extern void s_lock(volatile slock_t *lock,
const char *file, const int line);
extern void s_lock_sleep(unsigned spins, int timeout, int microsec,
%$(DLSUFFIX): %.o
@echo 'cannot make shared object $@ from $<'
-# Hack alert! Fix your compiler installation...
-override CXXFLAGS +=-I/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.60/include/g++
+override CXXFLAGS +=-I/usr/local/include/g++
+override CFLAGS +=-I/usr/local/include
#
# Copyright (c) 1994, Regents of the University of California
#
-# $Header: /cvsroot/pgsql/src/pl/plpgsql/Makefile,v 1.5 2000/08/31 16:12:15 petere Exp $
+# $Header: /cvsroot/pgsql/src/pl/plpgsql/Makefile,v 1.6 2001/05/24 15:53:34 momjian Exp $
#
#-------------------------------------------------------------------------
top_builddir = ../../..
include $(top_builddir)/src/Makefile.global
+ifneq ($(PORTNAME), qnx4)
+
all install installdirs uninstall distprep:
$(MAKE) -C src $@
+else #qnx4
+
+all install installdirs uninstall distprep:
+ echo plpgsql not supported with QNX due to lack of shared library support
+
+endif # qnx4
+
clean distclean maintainer-clean:
-$(MAKE) -C src $@
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