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Commitf36fc7b

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I haven't tried building postgres with the Watcom compiler for 7.1 because
it does not support 64bit integers. AFAIK that's the default data type forOIDs, so I am not surprised that this does not work. Use gcc instead.BTW., 7.1 does not compile as is with gcc either, I believed therequired patches made it into the 7.1.1 release but obviously I missedthe deadline.Since the ports mailing list does not seem to be archived I have attacheda copy of the patch (for 7.1 and 7.1.1).I've just performed a build of a Watcom compiled version and found a coupleof bugs in the watcom specific part of that patch. Please use the attachedversion instead.Tegge, Bernd
1 parent6f101c8 commitf36fc7b

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‎doc/FAQ_QNX4

Lines changed: 58 additions & 28 deletions
Original file line numberDiff line numberDiff line change
@@ -1,53 +1,76 @@
11
PostgresSQL on QNX 4
22
--------------------
3+
last updated: $Date: 2001/05/24 15:53:31 $
4+
5+
current maintainer: Bernd Tegge (tegge@repas-aeg.de)
6+
original author: Andreas Kardos (kardos@repas-aeg.de)
37

48
This port is an important step because PostgreSQL is now the only free
59
relational database with full SQL and ODBC support available for QNX 4.
610
The only commercial databases available are Empress RDBMS and Velocis
711
Database Server (not supported for Digital Unix).
812

913
The most effort required the emulation of System V semaphore sets,
10-
shared memory and IPC and of some IEEE floating-point functionality. For
11-
the Watcom compiler spinlocks have been implemented using POSIX semaphores.
14+
shared memory and IPC and of some IEEE floating-point functionality.
1215

13-
It isrecomended to use the GNU C compiler instead of the Watcom compiler
16+
It isrecommended to use the GNU C compiler instead of the Watcom compiler
1417
because the Watcom compiler doesn't support a int8 datatype (long or
15-
long long int) and it does not have a C++ frontend.
16-
It could be managed to build postgres using the Watcom compiler but it crashes
17-
quite early. These problems probably could be solved. The only advantage would
18-
be support of Tk and pgaccess. For the Watcom compiler some more modifications
19-
have to be made which are not described here.
18+
long long int) and it does not have a C++ frontend. The only advantage
19+
using Watcom C would be support of Tk and pgaccess.
2020

2121
QNX 4 does not offer native support of shared libraries. Therefore the related
2222
functionality cannot be used. Shared library support could probably be
2323
implemented in future.
2424

25-
QNX 4 does not support UNIX domain sockets.Connections can only be made
26-
with TCP/IP sockets.Therefore postmaster must always be started with the
27-
-i option. Furthermoreit would be useful to set the PGHOST variable.
25+
QNX 4 does not support UNIX domain sockets.Clients must use TCP/IP sockets.
26+
Therefore postmaster must always be started with the -i option. Furthermore
27+
it would be useful to set the PGHOST variable.
2828

2929
Prerequisites:
3030
--------------
3131

3232
The following prerequisites have been used:
3333

34-
QNX 4.25
35-
Watcom C 10.6
36-
GNU make
34+
QNX standard:
35+
QNX 4.25, Watcom C 10.6, GNU make
36+
37+
Available from http://www.teaser.fr/~jcmichot/
3738
flex-2.5.4a.tar.gz (flex)
38-
egcs111-qnx4-r20.tar[.gz] (GNU C)
39+
egcs-112-qnx4-r20.tar[.gz] (GNU C)
40+
41+
Available from ftp://ftp.visi.com/users/hawkeyd/qnx/
42+
bison-1.2.5.tar.gz
43+
44+
Available from http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/
3945
perl 5.004_04
46+
47+
from ftp://ftp.freesoftware.com/pub/infozip/zlib/
48+
zlib 1.1.3
49+
4050
tcl8.0.3.tar.Z (Tcl)
4151

52+
In order to achieve meaningful results for the regression tests, you need
53+
a different shell. The standard QNX shell is quite broken with regard to
54+
scripting (even QSSL suggested to use pdksh or bash). Both are available
55+
in source and binaries at
56+
http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/
57+
4258
flex can be built without any problems using the Watcom or GNU C compilers.
4359

60+
The current version of bison (1.2.8 at the time of this writing) does not
61+
build cleanly on QNX4 with gcc installed, but you can download src and
62+
binary of a previous version from the above mentioned ftp site.
63+
64+
download source
4465
GNU C can be installed by
45-
/etc/install -uegcs111-qnx4-r20.tar[.gz]
66+
/etc/install -uegcs112-qnx4-r20.tar[.gz]
4667

4768
Although Tcl can be built after some slight code changes using the Watcom
4869
compiler, the GNU C compiler should be used instead. Otherwise it would be
4970
impossible to link postgres built with GNU C together with libtcl8.0.a built
50-
with the Watcom compiler.
71+
with the Watcom compiler. However, if you are going to build a Watcom version
72+
you must build the tcl and tk libraries with Watcom too.
73+
5174
To make unix/tclUnixTest.c compilable uncomment
5275
#include <sys/resource.h>
5376
in it or
@@ -79,17 +102,14 @@ ln -s /usr/src/pgsql/src/backend/port/qnx4/sem.h /usr/include/sys/sem.h
79102
ln -s /usr/src/pgsql/src/backend/port/qnx4/shm.h /usr/include/sys/shm.h
80103

81104
For ecgs-2.91.60 the file
82-
/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.60/include/g++/stl_alloc.h
105+
/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.66/include/g++/stl_alloc.h
83106
had to be patched (extern "C++" { ... } // extern "C++").
84107
See attached patch.
85108

86-
If you use another ecpg version the include/g++ path in Makefile.qnx4
87-
(CXXFLAGS) has to be adopted.
88-
89109
If all prerequisites are available postgres can be built and installed by
90110
cd pgsql/src
91-
./configure --with-tcl --with-perl --with-x
92-
gmakeall> make.log 2>&1
111+
./configure --with-tcl --without-tk --with-perl
112+
gmake > make.log 2>&1
93113
gmake install > make.install.log 2>&1
94114
su
95115
cd interfaces/perl5
@@ -113,11 +133,15 @@ Currently yacc fails on backend/parser/gram.y and
113133
interfaces/ecpg/preproc/preproc.y due to exceeded maximum table size. You can
114134
generate the gram.h, parse.h, preproc.h and preproc.c files on another platform
115135
and use them. This is only a problem when you use the current source tree since
116-
parse.h, gram.c, preproc.h and preporc.c are included in official
117-
distributions.
136+
parse.h, gram.c, preproc.h and preproc.c are included in official
137+
distributions. In order to avoid this, install the bison binary mentioned
138+
above.
118139

119140
Regression tests:
120141
-----------------
142+
please don't use the QNX shell for the parallel regression tests. Download
143+
bash from quics.qnx.com and run 'make SHELL=/usr/local/bin/bash check'
144+
instead.
121145

122146
The majority of regression tests succeeded. The following tests failed:
123147

@@ -136,7 +160,8 @@ if a value of type money is inserted in string representation e.g. as in
136160
"insert into rtest_emp values ('wiech', '5000.00');"
137161
Subject of further investigation.
138162

139-
create_function_2, triggers, misc, plpgsql:
163+
create_function_1, create_function_2, create_type, create_operator,
164+
create_view, select_views, triggers, misc, plpgsql:
140165
Error messages due to the lack of shared library support.
141166

142167
numeric, numeric_big, sanity_check:
@@ -147,14 +172,19 @@ Subject of further investigation. Probably because of the missing indices
147172
these numeric tests take a long time.
148173
The diffence in sanity_check.out is a consequence of this problem only.
149174

150-
The reached state of this port should be sufficient for lot of applications.
175+
The current state of this port should be sufficient for lot of applications.
176+
177+
The Watcom version failed additional tests because of the lack of int8
178+
support.
151179

152180
Have fun!
153181

154182
Andreas Kardos
155-
kardos@repas-aeg.de
156183
2000-04-04
157184

185+
Bernd Tegge
186+
tegge@repas-aeg.de
187+
2001-03-01
158188

159189
---------------------------------------------------------------------------
160190

‎src/backend/Makefile

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -4,7 +4,7 @@
44
#
55
# Copyright (c) 1994, Regents of the University of California
66
#
7-
# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.71 2001/04/23 20:27:55 petere Exp $
7+
# $Header: /cvsroot/pgsql/src/backend/Makefile,v 1.72 2001/05/24 15:53:32 momjian Exp $
88
#
99
#-------------------------------------------------------------------------
1010

@@ -25,7 +25,8 @@ OBJS := $(DIRS:%=%/SUBSYS.o)
2525
ifeq ($(PORTNAME), qnx4)
2626
# This file crashes qnx4's wlink and is therefore not in
2727
# bootstrap/SUBSYS.o on that platform. (Wotta hack ... is it still
28-
# necessary?)
28+
# necessary?) [ Yes, until the Watcom compiler goes open source it's
29+
# effectively unsupported ]
2930
OBJS+= bootstrap/bootstrap.o
3031
endif
3132

‎src/backend/port/qnx4/sem.c

Lines changed: 38 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -7,7 +7,7 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/sem.c,v 1.4 2001/02/02 18:21:58 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/sem.c,v 1.5 2001/05/24 15:53:33 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
@@ -23,14 +23,16 @@
2323
#include"storage/ipc.h"
2424
#include"storage/proc.h"
2525
#include<sys/sem.h>
26+
#include<sys/mman.h>
27+
#include<sys/stat.h>
2628

2729

28-
#defineSETMAX((MAXBACKENDS + PROC_NSEMS_PER_SET- 1) / PROC_NSEMS_PER_SET)
30+
#defineSETMAX((MAXBACKENDS + PROC_NSEMS_PER_SET+ 1) / PROC_NSEMS_PER_SET)
2931
#defineSEMMAX(PROC_NSEMS_PER_SET+1)
3032
#defineOPMAX8
3133

3234
#defineMODE0700
33-
#defineSHM_INFO_NAME"SysV_Sem_Info"
35+
#defineSHM_INFO_NAME"PgSysV_Sem_Info"
3436

3537

3638
structpending_ops
@@ -56,6 +58,17 @@ struct sem_info
5658

5759
staticstructsem_info*SemInfo= (structsem_info*)-1;
5860

61+
/* ----------------------------------------------------------------
62+
* semclean - remove the shared memory file on exit
63+
* only called by the process which created the shm file
64+
* ----------------------------------------------------------------
65+
*/
66+
67+
staticvoid
68+
semclean(void )
69+
{
70+
remove("/dev/shmem/"SHM_INFO_NAME );
71+
}
5972

6073
int
6174
semctl(intsemid,intsemnum,intcmd,/* ... */unionsemunarg)
@@ -132,6 +145,7 @@ semget(key_t key, int nsems, int semflg)
132145
semid,
133146
semnum/* , semnum1 */ ;
134147
intexist=0;
148+
structstatstatbuf;
135149

136150
if (nsems<0||nsems>SEMMAX)
137151
{
@@ -153,6 +167,26 @@ semget(key_t key, int nsems, int semflg)
153167
returnfd;
154168
/* The size may only be set once. Ignore errors. */
155169
ltrunc(fd,sizeof(structsem_info),SEEK_SET);
170+
if (fstat(fd,&statbuf ) )/* would be strange : the only doc'ed */
171+
{/* error is EBADF */
172+
close(fd );
173+
return-1;
174+
}
175+
/*
176+
* size is rounded by proc to the next __PAGESIZE
177+
*/
178+
if (statbuf.st_size!=
179+
(((sizeof(structsem_info) /__PAGESIZE)+1)*__PAGESIZE) )
180+
{
181+
fprintf(stderr,
182+
"Found a pre-existing shared memory block for the semaphore memory\n"
183+
"of a different size (%ld instead %ld). Make sure that all executables\n"
184+
"are from the same release or remove the file \"/dev/shmem/%s\"\n"
185+
"left by a previous version.\n",statbuf.st_size,
186+
sizeof(structsem_info),SHM_INFO_NAME);
187+
errno=EACCES;
188+
return-1;
189+
}
156190
SemInfo=mmap(NULL,sizeof(structsem_info),
157191
PROT_READ |PROT_WRITE,MAP_SHARED,fd,0);
158192
if (SemInfo==MAP_FAILED)
@@ -167,6 +201,7 @@ semget(key_t key, int nsems, int semflg)
167201
for (semid=0;semid<SETMAX;semid++)
168202
SemInfo->set[semid].key=-1;
169203
sem_post(&SemInfo->sem);
204+
on_proc_exit(semclean,NULL );
170205
}
171206
}
172207

‎src/backend/port/qnx4/shm.c

Lines changed: 50 additions & 11 deletions
Original file line numberDiff line numberDiff line change
@@ -7,17 +7,19 @@
77
*
88
*
99
* IDENTIFICATION
10-
* $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/shm.c,v 1.4 2001/03/22 03:59:43 momjian Exp $
10+
* $Header: /cvsroot/pgsql/src/backend/port/qnx4/Attic/shm.c,v 1.5 2001/05/24 15:53:33 momjian Exp $
1111
*
1212
*-------------------------------------------------------------------------
1313
*/
1414

1515
#include<errno.h>
1616
#include<fcntl.h>
1717
#include<stdlib.h>
18+
#include<string.h>
1819
#include<unistd.h>
1920
#include<sys/mman.h>
2021
#include<sys/shm.h>
22+
#include<sys/stat.h>
2123

2224

2325
#defineMODE0777
@@ -41,6 +43,12 @@ static intshm_updinfo(int i, struct shm_info * info);
4143
staticintshm_getinfo(intshmid,structshm_info*info);
4244
staticintshm_getinfobyaddr(constvoid*addr,structshm_info*info);
4345

46+
staticchar*
47+
keytoname(key_tkey,char*name)
48+
{
49+
sprintf(name,"PgShm%x",key );
50+
returnname;
51+
}
4452

4553
staticint
4654
shm_putinfo(structshm_info*info)
@@ -172,25 +180,51 @@ shmctl(int shmid, int cmd, struct shmid_ds * buf)
172180
{
173181
structshm_infoinfo;
174182
charname[NAME_MAX+1];
183+
intresult;
184+
intfd;
185+
structstatstatbuf;
175186

176-
if (cmd==IPC_RMID)
187+
188+
switch(cmd )
177189
{
190+
caseIPC_RMID :
178191
if (shm_getinfo(shmid,&info)==-1)
179192
{
180193
errno=EACCES;
181194
return-1;
182195
}
183-
returnshm_unlink(itoa(info.key,name,16));
196+
close(info.shmid );
197+
keytoname(info.key,name);
198+
returnshm_unlink(name );
199+
200+
caseIPC_STAT :
201+
/*
202+
* we have to open it first. stat() does no prefix tracking
203+
* -> the call would go to fsys instead of proc
204+
*/
205+
keytoname(shmid,name);
206+
fd=shm_open(name,0,MODE );
207+
if (fd >=0 )
208+
{
209+
result=fstat(fd,&statbuf );
210+
/*
211+
* if the file exists, subtract 2 from linkcount :
212+
* one for our own open and one for the dir entry
213+
*/
214+
if ( !result )
215+
buf->shm_nattch=statbuf.st_nlink-2;
216+
close(fd );
217+
returnresult;
184218
}
185-
if (cmd==IPC_STAT)
219+
else
186220
{
187-
188221
/*
189-
* Can we support IPC_STAT? We only need shm_nattch ... For now,
190-
* punt and assumetheshm seg does not exist.
222+
* if there's no entry for this key it doesn't matter
223+
*thenext shmget() would get a different shm anyway
191224
*/
192-
errno=EINVAL;
193-
return-1;
225+
buf->shm_nattch=0;
226+
return0;
227+
}
194228
}
195229
errno=EINVAL;
196230
return-1;
@@ -214,16 +248,21 @@ shmget(key_t key, size_t size, int flags)
214248
else
215249
oflag |=O_RDONLY;
216250
}
217-
info.shmid=shm_open(itoa(key,name,16),oflag,MODE);
251+
info.shmid=shm_open(keytoname(key,name),oflag,MODE);
218252

219253
/* store shared memory information */
220254
if (info.shmid!=-1)
221255
{
222256
info.key=key;
223257
info.size=size;
224258
info.addr=NULL;
225-
if (shm_putinfo(&info)==-1)
259+
if (shm_putinfo(&info)==-1) {
260+
close(info.shmid );
261+
if ( (oflag& (O_CREAT|O_EXCL))== (O_CREAT|O_EXCL) ) {
262+
shm_unlink(name );
263+
}
226264
return-1;
265+
}
227266
}
228267

229268
/* The size may only be set once. Ignore errors. */

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