mirror of https://github.com/postgres/postgres
Bruce Momjian
20 years ago
parent
349f40b2c2
commit
a1675649e4
@ -1,229 +0,0 @@ |
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PostgreSQL on QNX 4 |
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-------------------- |
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last updated: $Date: 2004/03/23 01:23:47 $ |
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|
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current maintainer: Bernd Tegge (tegge@repas-aeg.de) |
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original author: Andreas Kardos (kardos@repas-aeg.de) |
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|
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This port is an important step because PostgreSQL is still the only free |
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relational database with full SQL and ODBC support available for QNX 4. |
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The only commercial databases available are Empress RDBMS and Velocis |
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Database Server (not supported for Digital Unix). |
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|
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The most effort required the emulation of System V semaphore sets, |
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shared memory and IPC and of some IEEE floating-point functionality. |
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|
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It is recommended to use the GNU C compiler instead of the Watcom compiler |
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because the Watcom compiler doesn't support a int8 datatype (long or |
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long long int) and it does not have a C++ frontend. The only advantage |
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using Watcom C would be support of Tk and pgaccess. |
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|
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QNX 4 does not offer native support of shared libraries. Therefore the related |
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functionality cannot be used. Shared library support could probably be |
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implemented in future. |
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|
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QNX 4 does not support UNIX domain sockets. Clients must use TCP/IP |
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sockets. Therefore, do not set "listen_addresses" to empty in your |
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postgresql.conf file. In fact, it's advisable to explicitly set |
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"listen_addresses" in an environment using native QNX networking. |
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Otherwise the postmaster might not use the IP-Address you think it does :-) |
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Prerequisites: |
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-------------- |
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The following prerequisites have been used: |
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QNX standard: |
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QNX 4.25, Watcom C 10.6, GNU make |
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Available from http://www.teaser.fr/~jcmichot/ |
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flex-2.5.4a.tar.gz (flex) |
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egcs-112-qnx4-r20.tar[.gz] (GNU C) |
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|
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Available from ftp://ftp.visi.com/users/hawkeyd/qnx/ |
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bison-1.2.5.tar.gz |
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|
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Available from http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/ |
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perl 5.004_04 |
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|
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from ftp://ftp.freesoftware.com/pub/infozip/zlib/ |
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zlib 1.1.3 |
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tcl8.0.3.tar.Z (Tcl) |
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|
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In order to achieve meaningful results for the regression tests, you need |
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a different shell. The standard QNX shell is quite broken with regard to |
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scripting (even QSSL suggested to use pdksh or bash). Both are available |
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in source and binaries at |
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http://quics.qnx.com/cgi-bin/dir_find.cgi?/usr/free/ |
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|
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flex can be built without any problems using the Watcom or GNU C compilers. |
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|
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The current version of bison (1.2.8 at the time of this writing) does not |
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build cleanly on QNX4 with gcc installed, but you can download src and |
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binary of a previous version from the above mentioned ftp site. |
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|
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download source |
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GNU C can be installed by |
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/etc/install -u egcs112-qnx4-r20.tar[.gz] |
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|
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Although Tcl can be built after some slight code changes using the Watcom |
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compiler, the GNU C compiler should be used instead. Otherwise it would be |
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impossible to link postgres built with GNU C together with libtcl8.0.a built |
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with the Watcom compiler. However, if you are going to build a Watcom version |
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you must build the tcl and tk libraries with Watcom too. |
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|
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To make unix/tclUnixTest.c compilable uncomment |
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#include <sys/resource.h> |
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in it or |
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touch /usr/include/sys/resource.h |
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In unix/Makefile.in replace |
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( echo cd $(TOP_DIR)/tests\; source all ) | ./tcltest |
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by |
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( echo cd ../tests\; source all ) | ./tcltest |
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After that Tcl can be built and tested as stated in README. |
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|
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Tk cannot be built with GNU C due to the lack of a stack version of the |
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X11 library. With the Watcom compiler Tk could be built but this is not useful |
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because of the link problems mentioned above. |
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|
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Therefore the Tk interface and the pgaccess tool cannot be supported for a GNU C |
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version of PostgreSQL on QNX 4. |
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PostgreSQL: |
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----------- |
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On QNX 4 some headers are not in the directories expected. To avoid |
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modifications of the code the following links should be made: |
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ln -s /usr/local/bin/perl /usr/local/bin/perl5 |
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ln -s /usr/include/errno.h /usr/include/sys/errno.h |
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ln -s /usr/include/ioctl.h /usr/include/sys/ioctl.h |
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ln -s /usr/src/pgsql/src/backend/port/qnx4/ipc.h /usr/include/sys/ipc.h |
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ln -s /usr/src/pgsql/src/backend/port/qnx4/sem.h /usr/include/sys/sem.h |
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ln -s /usr/src/pgsql/src/backend/port/qnx4/shm.h /usr/include/sys/shm.h |
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For ecgs-2.91.60 the file |
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/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.66/include/g++/stl_alloc.h |
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had to be patched (extern "C++" { ... } // extern "C++"). |
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See attached patch. |
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If all prerequisites are available postgres can be built and installed by |
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cd pgsql/src |
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./configure --with-tcl --without-tk --with-perl |
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gmake > make.log 2>&1 |
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gmake install > make.install.log 2>&1 |
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su |
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cd interfaces/perl5 |
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gmake install |
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exit |
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All other steps can be carried out as stated in the INSTALL file. |
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Make problems: |
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-------------- |
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|
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Sometimes the Watcom library manager wlib crashes with SIGSEGV on some |
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object files. This is a general problem and not PostgreSQL related. |
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Currently bootstrap.o causes such a crash. The workaround is not to include |
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the object file into the SUBSYS.o but link it directly. For further information |
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see backend/Makefile and backend/bootstrap/Makefile. |
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libpgsql.a currently cannot be generated because of the same problem. But this |
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doesn't matter since shared libraries are not supported. |
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(The Makefiles are already changed to ignore this, you don't have to |
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do anything) |
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|
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Regression tests: |
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----------------- |
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please don't use the QNX shell for the parallel regression tests. Download |
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bash from quics.qnx.com and run 'make SHELL=/usr/local/bin/bash check' |
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instead. |
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|
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The majority of regression tests succeeded. The following tests failed: |
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geometry: |
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Some slight deviation in the last digit and "0" instead of "-0". |
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Can be ignored. |
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timestamp, tinterval, abstime, horology: |
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Differences for years before the UNIX epoch. The QNX library probably treats |
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time_t as unsigned -> dates before 1970 get moved into the far future. |
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Can be ignored. |
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|
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create_function_1, create_function_2, create_type, create_operator, |
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create_view, select_views, triggers, misc, plpgsql: |
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Error messages due to the lack of shared library support. |
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rules, select_views: |
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looks like it fails because it depends on tables created by previously |
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failing tests. |
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alter_table: |
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An expected failure message contains one blank more than expected. |
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Possibly a faulty output file. |
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int8, subselect, union |
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fails for Watcom version because of lacking int8 support. |
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The current state of this port should be sufficient for lot of applications. |
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Have fun! |
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Andreas Kardos |
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2000-04-04 |
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Bernd Tegge |
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tegge@repas-aeg.de |
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2001-12-10 |
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--------------------------------------------------------------------------- |
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*** ./stl_alloc.h.orig Sat Feb 28 05:17:28 1998 |
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--- ./stl_alloc.h Tue Nov 23 04:14:09 1999 |
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*************** |
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*** 120,125 **** |
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--- 120,126 ---- |
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#pragma set woff 1174 |
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#endif |
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+ extern "C++" { |
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// Malloc-based allocator. Typically slower than default alloc below. |
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// Typically thread-safe and more storage efficient. |
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#ifdef __STL_STATIC_TEMPLATE_MEMBER_BUG |
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*************** |
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*** 682,687 **** |
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--- 683,689 ---- |
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# endif |
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#endif /* ! __USE_MALLOC */ |
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+ } // extern "C++" |
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#if defined(__sgi) && !defined(__GNUC__) && (_MIPS_SIM != _MIPS_SIM_ABI32) |
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#pragma reset woff 1174 |
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Patch required to build with gcc: |
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*** /usr/src/postgresql-7.2b3/src/backend/port/qnx4/sem.h Thu Nov 8 21:37:52 2001 |
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--- src/backend/port/qnx4/sem.h Mon Dec 10 13:22:18 2001 |
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*************** |
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*** 55,60 **** |
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--- 55,71 ---- |
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ushort_t sem_num; /* semaphore # */ |
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short sem_op; /* semaphore operation */ |
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short sem_flg; /* operation flags */ |
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+ }; |
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+ |
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+ /* |
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+ * command union for semctl. |
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+ */ |
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+ |
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+ union semun { |
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+ int val; /* value for SETVAL */ |
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+ struct semid_ds *buf; /* buffer for IPC_STAT, IPC_SET */ |
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+ unsigned short int *array; /* array for GETALL, SETALL */ |
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+ struct seminfo *__buf; /* buffer for IPC_INFO */ |
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}; |
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extern int semctl(int semid, int semnum, int cmd, /* ... */ union semun arg); |
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@ -1,51 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* dynloader.c |
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* dynamic loader for QNX4 using the shared library mechanism |
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* |
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* Copyright (c) 1999, repas AEG Automation GmbH |
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* |
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* |
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* IDENTIFICATION |
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* $PostgreSQL: pgsql/src/backend/port/dynloader/qnx4.c,v 1.6 2004/01/07 18:56:27 neilc Exp $ |
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* |
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* NOTES |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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/* System includes */ |
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#include "postgres.h" |
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/*
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#include <a.out.h> |
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#include <dl.h> |
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*/ |
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#include "utils/dynamic_loader.h" |
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#include "dynloader.h" |
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void * |
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pg_dlopen(char *filename) |
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{ |
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return NULL; |
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} |
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PGFunction |
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pg_dlsym(void *handle, char *funcname) |
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{ |
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return NULL; |
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} |
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void |
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pg_dlclose(void *handle) |
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{ |
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} |
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char * |
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pg_dlerror() |
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{ |
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static char errmsg[] = "Failed to load shared library due to lack of shared library support."; |
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return errmsg; |
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} |
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@ -1,22 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* dynloader.h |
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* dynamic loader for QNX4 using the shared library mechanism |
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* |
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* Copyright (c) 1999, repas AEG Automation GmbH |
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* |
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* |
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* IDENTIFICATION |
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* $PostgreSQL: pgsql/src/backend/port/dynloader/qnx4.h,v 1.4 2003/11/29 19:51:54 pgsql Exp $ |
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* |
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* NOTES |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#include "fmgr.h" |
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void *pg_dlopen(char *filename); |
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PGFunction pg_dlsym(void *handle, char *funcname); |
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void pg_dlclose(void *handle); |
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char *pg_dlerror(); |
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@ -1,36 +0,0 @@ |
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#-------------------------------------------------------------------------
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#
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# Makefile--
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# Makefile for port/qnx4
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#
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# IDENTIFICATION
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# $PostgreSQL: pgsql/src/backend/port/qnx4/Makefile,v 1.6 2003/11/29 19:51:54 pgsql Exp $
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#
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#-------------------------------------------------------------------------
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subdir = src/backend/port/qnx4
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top_builddir = ../../../..
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include $(top_builddir)/src/Makefile.global |
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OBJS = isnan.o sem.o shm.o
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all: SUBSYS.o tstsem tstshm |
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SUBSYS.o: $(OBJS) |
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$(LD) $(LDREL) $(LDOUT) SUBSYS.o $(OBJS)
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tstsem: tstsem.o sem.o |
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$(CC) -o tstsem sem.o tstsem.o
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tstshm: tstshm.o shm.o |
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$(CC) -o tstshm shm.o tstshm.o
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depend dep: |
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$(CC) -MM $(CFLAGS) *.c >depend
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clean: |
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rm -f SUBSYS.o $(OBJS) tstsem tstsem.o tstshm tstshm.o
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ifeq (depend,$(wildcard depend)) |
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include depend |
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endif |
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@ -1,31 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* ipc.h |
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* System V IPC Emulation |
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* |
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* Copyright (c) 1999, repas AEG Automation GmbH |
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* |
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* |
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* IDENTIFICATION |
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* $PostgreSQL: pgsql/src/backend/port/qnx4/ipc.h,v 1.7 2003/11/29 19:51:54 pgsql Exp $ |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#ifndef _SYS_IPC_H |
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#define _SYS_IPC_H |
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/* Common IPC definitions. */ |
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/* Mode bits. */ |
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#define IPC_CREAT 0001000 /* create entry if key doesn't exist */ |
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#define IPC_EXCL 0002000 /* fail if key exists */ |
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#define IPC_NOWAIT 0004000 /* error if request must wait */ |
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/* Keys. */ |
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#define IPC_PRIVATE (key_t)0 /* private key */ |
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/* Control Commands. */ |
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#define IPC_RMID 0 /* remove identifier */ |
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#define IPC_STAT 1 /* get shm status */ |
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#endif /* _SYS_IPC_H */ |
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@ -1,29 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* isnan.c |
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* isnan() implementation |
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* |
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* Copyright (c) 1999, repas AEG Automation GmbH |
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* |
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* |
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* IDENTIFICATION |
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* $PostgreSQL: pgsql/src/backend/port/qnx4/isnan.c,v 1.5 2004/03/15 03:29:22 tgl Exp $ |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#include "c.h" |
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#include <math.h> |
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#ifndef __nan_bytes |
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#define __nan_bytes { 0, 0, 0, 0, 0, 0, 0xf8, 0x7f } |
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#endif /* __nan_bytes */ |
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static unsigned char __nan[8] = __nan_bytes; |
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int |
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isnan(double dsrc) |
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{ |
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return memcmp(&dsrc, __nan, sizeof(double)) == 0; |
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} |
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@ -1,396 +0,0 @@ |
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/*-------------------------------------------------------------------------
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* |
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* sem.c |
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* System V Semaphore Emulation |
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* |
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* Copyright (c) 1999, repas AEG Automation GmbH |
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* |
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* |
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* IDENTIFICATION |
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* $PostgreSQL: pgsql/src/backend/port/qnx4/sem.c,v 1.13 2005/10/15 02:49:23 momjian Exp $ |
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* |
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*------------------------------------------------------------------------- |
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*/ |
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#include "postgres.h" |
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#include <errno.h> |
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#include <semaphore.h> |
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#include <unistd.h> |
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#include <fcntl.h> |
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#include <sys/mman.h> |
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#include <sys/sem.h> |
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#include <sys/mman.h> |
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#include <sys/stat.h> |
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#include "miscadmin.h" |
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#include "storage/ipc.h" |
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#include "storage/proc.h" |
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#define SEMMAX (PROC_NSEMS_PER_SET+1) |
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#define OPMAX 8 |
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#define MODE 0700 |
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#define SHM_INFO_NAME "PgSysV_Sem_Info" |
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struct pending_ops |
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{ |
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int op[OPMAX]; /* array of pending operations */ |
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int idx; /* index of first free array member */ |
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}; |
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struct sem_set_info |
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{ |
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key_t key; |
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int nsems; |
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sem_t sem[SEMMAX]; /* array of POSIX semaphores */ |
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struct sem semV[SEMMAX]; /* array of System V semaphore structures */ |
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struct pending_ops pendingOps[SEMMAX]; /* array of pending operations */ |
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}; |
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struct sem_info |
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{ |
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sem_t sem; |
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int nsets; |
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/* there are actually nsets of these: */ |
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struct sem_set_info set[1]; /* VARIABLE LENGTH ARRAY */ |
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}; |
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static struct sem_info *SemInfo = (struct sem_info *) - 1; |
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/* ----------------------------------------------------------------
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* semclean - remove the shared memory file on exit |
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* only called by the process which created the shm file |
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* ---------------------------------------------------------------- |
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*/ |
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static void |
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semclean(void) |
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{ |
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remove("/dev/shmem/" SHM_INFO_NAME); |
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} |
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int |
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semctl(int semid, int semnum, int cmd, /* ... */ union semun arg) |
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{ |
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int r = 0; |
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sem_wait(&SemInfo->sem); |
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if (semid < 0 || semid >= SemInfo->nsets || |
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semnum < 0 || semnum >= SemInfo->set[semid].nsems) |
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{ |
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sem_post(&SemInfo->sem); |
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errno = EINVAL; |
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return -1; |
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} |
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|
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switch (cmd) |
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{ |
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case GETNCNT: |
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r = SemInfo->set[semid].semV[semnum].semncnt; |
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break; |
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|
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case GETPID: |
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r = SemInfo->set[semid].semV[semnum].sempid; |
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break; |
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case GETVAL: |
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r = SemInfo->set[semid].semV[semnum].semval; |
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break; |
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|
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case GETALL: |
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for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++) |
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arg.array[semnum] = SemInfo->set[semid].semV[semnum].semval; |
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break; |
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|
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case SETVAL: |
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SemInfo->set[semid].semV[semnum].semval = arg.val; |
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break; |
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|
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case SETALL: |
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for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++) |
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SemInfo->set[semid].semV[semnum].semval = arg.array[semnum]; |
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break; |
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|
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case GETZCNT: |
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r = SemInfo->set[semid].semV[semnum].semzcnt; |
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break; |
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|
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case IPC_RMID: |
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for (semnum = 0; semnum < SemInfo->set[semid].nsems; semnum++) |
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{ |
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if (sem_destroy(&SemInfo->set[semid].sem[semnum]) == -1) |
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r = -1; |
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} |
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SemInfo->set[semid].key = -1; |
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SemInfo->set[semid].nsems = 0; |
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break; |
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|
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default: |
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sem_post(&SemInfo->sem); |
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errno = EINVAL; |
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return -1; |
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} |
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|
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sem_post(&SemInfo->sem); |
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|
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return r; |
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} |
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|
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int |
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semget(key_t key, int nsems, int semflg) |
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{ |
||||
int fd, |
||||
semid, |
||||
semnum, |
||||
nsets; |
||||
int exist = 0; |
||||
Size sem_info_size; |
||||
struct stat statbuf; |
||||
|
||||
if (nsems < 0 || nsems > SEMMAX) |
||||
{ |
||||
errno = EINVAL; |
||||
return -1; |
||||
} |
||||
|
||||
/* open and map shared memory */ |
||||
if (SemInfo == (struct sem_info *) - 1) |
||||
{ |
||||
/* test if the shared memory already exists */ |
||||
fd = shm_open(SHM_INFO_NAME, O_RDWR | O_CREAT | O_EXCL, MODE); |
||||
if (fd == -1 && errno == EEXIST) |
||||
{ |
||||
exist = 1; |
||||
fd = shm_open(SHM_INFO_NAME, O_RDWR | O_CREAT, MODE); |
||||
} |
||||
if (fd == -1) |
||||
return fd; |
||||
/* The size may only be set once. Ignore errors. */ |
||||
nsets = PROC_SEM_MAP_ENTRIES(MaxBackends); |
||||
sem_info_size = sizeof(struct sem_info) + (nsets - 1) * sizeof(struct sem_set_info); |
||||
ltrunc(fd, sem_info_size, 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 != |
||||
(((sem_info_size / __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", |
||||
(long) statbuf.st_size, |
||||
(long) sem_info_size, |
||||
SHM_INFO_NAME); |
||||
errno = EACCES; |
||||
return -1; |
||||
} |
||||
SemInfo = mmap(NULL, sem_info_size, |
||||
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); |
||||
if (SemInfo == MAP_FAILED) |
||||
return -1; |
||||
if (!exist) |
||||
{ |
||||
/* initialize shared memory */ |
||||
memset(SemInfo, 0, sem_info_size); |
||||
SemInfo->nsets = nsets; |
||||
for (semid = 0; semid < nsets; semid++) |
||||
SemInfo->set[semid].key = -1; |
||||
/* create semaphore for locking */ |
||||
sem_init(&SemInfo->sem, 1, 1); |
||||
on_proc_exit(semclean, 0); |
||||
} |
||||
} |
||||
|
||||
sem_wait(&SemInfo->sem); |
||||
nsets = SemInfo->nsets; |
||||
|
||||
if (key != IPC_PRIVATE) |
||||
{ |
||||
/* search existing element */ |
||||
semid = 0; |
||||
while (semid < nsets && SemInfo->set[semid].key != key) |
||||
semid++; |
||||
if (!(semflg & IPC_CREAT) && semid >= nsets) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = ENOENT; |
||||
return -1; |
||||
} |
||||
else if (semid < nsets) |
||||
{ |
||||
if (semflg & IPC_CREAT && semflg & IPC_EXCL) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = EEXIST; |
||||
return -1; |
||||
} |
||||
else |
||||
{ |
||||
if (nsems != 0 && SemInfo->set[semid].nsems < nsems) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = EINVAL; |
||||
return -1; |
||||
} |
||||
sem_post(&SemInfo->sem); |
||||
return semid; |
||||
} |
||||
} |
||||
} |
||||
|
||||
/* search first free element */ |
||||
semid = 0; |
||||
while (semid < nsets && SemInfo->set[semid].key != -1) |
||||
semid++; |
||||
if (semid >= nsets) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = ENOSPC; |
||||
return -1; |
||||
} |
||||
|
||||
for (semnum = 0; semnum < nsems; semnum++) |
||||
{ |
||||
sem_init(&SemInfo->set[semid].sem[semnum], 1, 0); |
||||
/* Currently sem_init always returns -1. */ |
||||
#ifdef NOT_USED |
||||
if (sem_init(&SemInfo->set[semid].sem[semnum], 1, 0) == -1) |
||||
{ |
||||
int semnum1; |
||||
|
||||
for (semnum1 = 0; semnum1 < semnum; semnum1++) |
||||
sem_destroy(&SemInfo->set[semid].sem[semnum1]); |
||||
sem_post(&SemInfo->sem); |
||||
return -1; |
||||
} |
||||
#endif |
||||
} |
||||
|
||||
SemInfo->set[semid].key = key; |
||||
SemInfo->set[semid].nsems = nsems; |
||||
|
||||
sem_post(&SemInfo->sem); |
||||
|
||||
return semid; |
||||
} |
||||
|
||||
int |
||||
semop(int semid, struct sembuf * sops, size_t nsops) |
||||
{ |
||||
int i, |
||||
r = 0, |
||||
r1, |
||||
errno1 = 0, |
||||
op; |
||||
|
||||
sem_wait(&SemInfo->sem); |
||||
|
||||
if (semid < 0 || semid >= SemInfo->nsets) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = EINVAL; |
||||
return -1; |
||||
} |
||||
for (i = 0; i < nsops; i++) |
||||
{ |
||||
if ( /* sops[i].sem_num < 0 || */ sops[i].sem_num >= SemInfo->set[semid].nsems) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = EFBIG; |
||||
return -1; |
||||
} |
||||
} |
||||
|
||||
for (i = 0; i < nsops; i++) |
||||
{ |
||||
if (sops[i].sem_op < 0) |
||||
{ |
||||
if (SemInfo->set[semid].semV[sops[i].sem_num].semval < -sops[i].sem_op) |
||||
{ |
||||
if (sops[i].sem_flg & IPC_NOWAIT) |
||||
{ |
||||
sem_post(&SemInfo->sem); |
||||
errno = EAGAIN; |
||||
return -1; |
||||
} |
||||
SemInfo->set[semid].semV[sops[i].sem_num].semncnt++; |
||||
if (SemInfo->set[semid].pendingOps[sops[i].sem_num].idx >= OPMAX) |
||||
{ |
||||
/* pending operations array overflow */ |
||||
sem_post(&SemInfo->sem); |
||||
errno = ERANGE; |
||||
return -1; |
||||
} |
||||
SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx++] = sops[i].sem_op; |
||||
/* suspend */ |
||||
sem_post(&SemInfo->sem); /* avoid deadlock */ |
||||
r1 = sem_wait(&SemInfo->set[semid].sem[sops[i].sem_num]); |
||||
sem_wait(&SemInfo->sem); |
||||
if (r1) |
||||
{ |
||||
errno1 = errno; |
||||
r = r1; |
||||
/* remove pending operation */ |
||||
SemInfo->set[semid].pendingOps[sops[i].sem_num].op[--SemInfo->set[semid].pendingOps[sops[i].sem_num].idx] = 0; |
||||
} |
||||
else |
||||
SemInfo->set[semid].semV[sops[i].sem_num].semval -= -sops[i].sem_op; |
||||
SemInfo->set[semid].semV[sops[i].sem_num].semncnt--; |
||||
} |
||||
else |
||||
SemInfo->set[semid].semV[sops[i].sem_num].semval -= -sops[i].sem_op; |
||||
} |
||||
else if (sops[i].sem_op > 0) |
||||
{ |
||||
SemInfo->set[semid].semV[sops[i].sem_num].semval += sops[i].sem_op; |
||||
op = sops[i].sem_op; |
||||
while (op > 0 && SemInfo->set[semid].pendingOps[sops[i].sem_num].idx > 0) |
||||
{ /* operations pending */ |
||||
if (SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx - 1] + op >= 0) |
||||
{ |
||||
/* unsuspend processes */ |
||||
if (sem_post(&SemInfo->set[semid].sem[sops[i].sem_num])) |
||||
{ |
||||
errno1 = errno; |
||||
r = -1; |
||||
} |
||||
/* adjust pending operations */ |
||||
op += SemInfo->set[semid].pendingOps[sops[i].sem_num].op[--SemInfo->set[semid].pendingOps[sops[i].sem_num].idx]; |
||||
SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx] = 0; |
||||
} |
||||
else |
||||
{ |
||||
/* adjust pending operations */ |
||||
SemInfo->set[semid].pendingOps[sops[i].sem_num].op[SemInfo->set[semid].pendingOps[sops[i].sem_num].idx - 1] += op; |
||||
op = 0; |
||||
} |
||||
} |
||||
} |
||||
else |
||||
/* sops[i].sem_op == 0 */ |
||||
{ |
||||
/* not supported */ |
||||
sem_post(&SemInfo->sem); |
||||
errno = ENOSYS; |
||||
return -1; |
||||
} |
||||
SemInfo->set[semid].semV[sops[i].sem_num].sempid = getpid(); |
||||
} |
||||
|
||||
sem_post(&SemInfo->sem); |
||||
|
||||
errno = errno1; |
||||
return r; |
||||
} |
||||
@ -1,68 +0,0 @@ |
||||
/*-------------------------------------------------------------------------
|
||||
* |
||||
* sem.h |
||||
* System V Semaphore Emulation |
||||
* |
||||
* Copyright (c) 1999, repas AEG Automation GmbH |
||||
* |
||||
* |
||||
* IDENTIFICATION |
||||
* $PostgreSQL: pgsql/src/backend/port/qnx4/sem.h,v 1.8 2003/11/29 19:51:54 pgsql Exp $ |
||||
* |
||||
*------------------------------------------------------------------------- |
||||
*/ |
||||
|
||||
#ifndef _SYS_SEM_H |
||||
#define _SYS_SEM_H |
||||
|
||||
#include <sys/ipc.h> |
||||
|
||||
#ifdef __cplusplus |
||||
extern "C" |
||||
{ |
||||
#endif |
||||
|
||||
/*
|
||||
* Semctl Command Definitions. |
||||
*/ |
||||
|
||||
#define GETNCNT 3 /* get semncnt */ |
||||
#define GETPID 4 /* get sempid */ |
||||
#define GETVAL 5 /* get semval */ |
||||
#define GETALL 6 /* get all semval's */ |
||||
#define GETZCNT 7 /* get semzcnt */ |
||||
#define SETVAL 8 /* set semval */ |
||||
#define SETALL 9 /* set all semval's */ |
||||
|
||||
/*
|
||||
* There is one semaphore structure for each semaphore in the system. |
||||
*/ |
||||
|
||||
struct sem |
||||
{ |
||||
ushort_t semval; /* semaphore text map address */ |
||||
pid_t sempid; /* pid of last operation */ |
||||
ushort_t semncnt; /* # awaiting semval > cval */ |
||||
ushort_t semzcnt; /* # awaiting semval = 0 */ |
||||
}; |
||||
|
||||
/*
|
||||
* User semaphore template for semop system calls. |
||||
*/ |
||||
|
||||
struct sembuf |
||||
{ |
||||
ushort_t sem_num; /* semaphore # */ |
||||
short sem_op; /* semaphore operation */ |
||||
short sem_flg; /* operation flags */ |
||||
}; |
||||
|
||||
extern int semctl(int semid, int semnum, int cmd, /* ... */ union semun arg); |
||||
extern int semget(key_t key, int nsems, int semflg); |
||||
extern int semop(int semid, struct sembuf * sops, size_t nsops); |
||||
|
||||
#ifdef __cplusplus |
||||
} |
||||
#endif |
||||
|
||||
#endif /* _SYS_SEM_H */ |
||||
@ -1,274 +0,0 @@ |
||||
/*-------------------------------------------------------------------------
|
||||
* |
||||
* shm.c |
||||
* System V Shared Memory Emulation |
||||
* |
||||
* Copyright (c) 1999, repas AEG Automation GmbH |
||||
* |
||||
* |
||||
* IDENTIFICATION |
||||
* $PostgreSQL: pgsql/src/backend/port/qnx4/shm.c,v 1.10 2005/10/15 02:49:23 momjian Exp $ |
||||
* |
||||
*------------------------------------------------------------------------- |
||||
*/ |
||||
|
||||
#include "postgres.h" |
||||
|
||||
#include <errno.h> |
||||
#include <fcntl.h> |
||||
#include <unistd.h> |
||||
#include <sys/mman.h> |
||||
#include <sys/shm.h> |
||||
#include <sys/stat.h> |
||||
|
||||
|
||||
#define MODE 0777 |
||||
|
||||
#define SHMMAX 1024 |
||||
|
||||
|
||||
struct shm_info |
||||
{ |
||||
int shmid; |
||||
key_t key; |
||||
size_t size; |
||||
void *addr; |
||||
}; |
||||
|
||||
static struct shm_info *ShmInfo; |
||||
|
||||
|
||||
static int shm_putinfo(struct shm_info * info); |
||||
static int shm_updinfo(int i, struct shm_info * info); |
||||
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) |
||||
{ |
||||
int i; |
||||
|
||||
if (ShmInfo == NULL) |
||||
{ |
||||
ShmInfo = calloc(SHMMAX, sizeof(struct shm_info)); |
||||
if (ShmInfo == NULL) |
||||
return -1; |
||||
/* initialize ShmInfo */ |
||||
for (i = 0; i < SHMMAX; i++) |
||||
ShmInfo[i].shmid = -1; |
||||
} |
||||
|
||||
/* search first free element */ |
||||
i = 0; |
||||
while (i < SHMMAX && ShmInfo[i].shmid != -1) |
||||
i++; |
||||
if (i >= SHMMAX) |
||||
{ |
||||
errno = ENOSPC; |
||||
return -1; |
||||
} |
||||
|
||||
memcpy(&ShmInfo[i], info, sizeof(struct shm_info)); |
||||
|
||||
return i; |
||||
} |
||||
|
||||
static int |
||||
shm_updinfo(int i, struct shm_info * info) |
||||
{ |
||||
if (i >= SHMMAX) |
||||
return -1; |
||||
if (ShmInfo == NULL) |
||||
return -1; |
||||
|
||||
memcpy(&ShmInfo[i], info, sizeof(struct shm_info)); |
||||
|
||||
return i; |
||||
} |
||||
|
||||
static int |
||||
shm_getinfo(int shmid, struct shm_info * info) |
||||
{ |
||||
int i; |
||||
|
||||
if (ShmInfo == NULL) |
||||
return -1; |
||||
|
||||
/* search element */ |
||||
i = 0; |
||||
while (i < SHMMAX && ShmInfo[i].shmid != shmid) |
||||
i++; |
||||
if (i >= SHMMAX) |
||||
return -1; |
||||
|
||||
memcpy(info, &ShmInfo[i], sizeof(struct shm_info)); |
||||
|
||||
return i; |
||||
} |
||||
|
||||
static int |
||||
shm_getinfobyaddr(const void *addr, struct shm_info * info) |
||||
{ |
||||
int i; |
||||
|
||||
if (ShmInfo == (struct shm_info *) - 1) |
||||
return -1; |
||||
|
||||
/* search element */ |
||||
i = 0; |
||||
while (i < SHMMAX && ShmInfo[i].addr != addr) |
||||
i++; |
||||
if (i >= SHMMAX) |
||||
return -1; |
||||
|
||||
memcpy(info, &ShmInfo[i], sizeof(struct shm_info)); |
||||
|
||||
return i; |
||||
} |
||||
|
||||
|
||||
void * |
||||
shmat(int shmid, const void *shmaddr, int shmflg) |
||||
{ |
||||
struct shm_info info; |
||||
int i; |
||||
|
||||
i = shm_getinfo(shmid, &info); |
||||
if (i == -1) |
||||
{ |
||||
errno = EACCES; |
||||
return (void *) -1; |
||||
} |
||||
|
||||
info.addr = mmap((void *) shmaddr, info.size, |
||||
PROT_READ | PROT_WRITE, MAP_SHARED, shmid, 0); |
||||
if (info.addr == MAP_FAILED) |
||||
return info.addr; |
||||
|
||||
if (shm_updinfo(i, &info) == -1) |
||||
{ |
||||
errno = EACCES; |
||||
return (void *) -1; |
||||
} |
||||
|
||||
return info.addr; |
||||
} |
||||
|
||||
int |
||||
shmdt(const void *addr) |
||||
{ |
||||
struct shm_info info; |
||||
|
||||
if (shm_getinfobyaddr(addr, &info) == -1) |
||||
{ |
||||
errno = EACCES; |
||||
return -1; |
||||
} |
||||
|
||||
return munmap((void *) addr, info.size); |
||||
} |
||||
|
||||
int |
||||
shmctl(int shmid, int cmd, struct shmid_ds * buf) |
||||
{ |
||||
struct shm_info info; |
||||
char name[NAME_MAX + 1]; |
||||
int result; |
||||
int fd; |
||||
struct stat statbuf; |
||||
|
||||
|
||||
switch (cmd) |
||||
{ |
||||
case IPC_RMID: |
||||
if (shm_getinfo(shmid, &info) == -1) |
||||
{ |
||||
errno = EACCES; |
||||
return -1; |
||||
} |
||||
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; |
||||
} |
||||
else |
||||
{ |
||||
/*
|
||||
* if there's no entry for this key it doesn't matter the next |
||||
* shmget() would get a different shm anyway |
||||
*/ |
||||
buf->shm_nattch = 0; |
||||
return 0; |
||||
} |
||||
} |
||||
errno = EINVAL; |
||||
return -1; |
||||
} |
||||
|
||||
int |
||||
shmget(key_t key, size_t size, int flags) |
||||
{ |
||||
char name[NAME_MAX + 1]; |
||||
int oflag = 0; |
||||
struct shm_info info; |
||||
|
||||
if (flags & IPC_CREAT) |
||||
oflag |= O_CREAT; |
||||
if (flags & IPC_EXCL) |
||||
oflag |= O_EXCL; |
||||
if (flags & SHM_R) |
||||
{ |
||||
if (flags & SHM_W) |
||||
oflag |= O_RDWR; |
||||
else |
||||
oflag |= O_RDONLY; |
||||
} |
||||
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) |
||||
{ |
||||
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. */ |
||||
ltrunc(info.shmid, size, SEEK_SET); |
||||
|
||||
return info.shmid; |
||||
} |
||||
@ -1,43 +0,0 @@ |
||||
/*-------------------------------------------------------------------------
|
||||
* |
||||
* shm.h |
||||
* System V Shared Memory Emulation |
||||
* |
||||
* Copyright (c) 1999, repas AEG Automation GmbH |
||||
* |
||||
* |
||||
* IDENTIFICATION |
||||
* $PostgreSQL: pgsql/src/backend/port/qnx4/shm.h,v 1.8 2003/11/29 19:51:54 pgsql Exp $ |
||||
* |
||||
*------------------------------------------------------------------------- |
||||
*/ |
||||
|
||||
#ifndef _SYS_SHM_H |
||||
#define _SYS_SHM_H |
||||
|
||||
#include <sys/ipc.h> |
||||
|
||||
#ifdef __cplusplus |
||||
extern "C" |
||||
{ |
||||
#endif |
||||
|
||||
#define SHM_R 0400 /* read permission */ |
||||
#define SHM_W 0200 /* write permission */ |
||||
|
||||
struct shmid_ds |
||||
{ |
||||
int dummy; |
||||
int shm_nattch; |
||||
}; |
||||
|
||||
extern void *shmat(int shmid, const void *shmaddr, int shmflg); |
||||
extern int shmdt(const void *addr); |
||||
extern int shmctl(int shmid, int cmd, struct shmid_ds * buf); |
||||
extern int shmget(key_t key, size_t size, int flags); |
||||
|
||||
#ifdef __cplusplus |
||||
} |
||||
#endif |
||||
|
||||
#endif /* _SYS_SHM_H */ |
||||
@ -1,206 +0,0 @@ |
||||
/*-------------------------------------------------------------------------
|
||||
* |
||||
* tstsem.c |
||||
* Test of System V Semaphore Emulation |
||||
* |
||||
* Copyright (c) 1999, repas AEG Automation GmbH |
||||
* |
||||
* |
||||
* IDENTIFICATION |
||||
* $PostgreSQL: pgsql/src/backend/port/qnx4/tstsem.c,v 1.10 2003/11/29 19:51:54 pgsql Exp $ |
||||
* |
||||
*------------------------------------------------------------------------- |
||||
*/ |
||||
|
||||
#include "postgres.h" |
||||
|
||||
#include <signal.h> |
||||
#include <unistd.h> |
||||
#include "storage/ipc.h" |
||||
#include <sys/mman.h> |
||||
#include <sys/sem.h> |
||||
|
||||
|
||||
#define SEMMAX 16 |
||||
#define OPSMAX 1 |
||||
|
||||
int MaxBackends = SEMMAX; |
||||
|
||||
static int semid; |
||||
|
||||
static void |
||||
sig_handler(int sig_no) |
||||
{ |
||||
union semun arg; |
||||
int i = semctl(semid, 0, GETNCNT, arg); |
||||
|
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
printf("semval = %d\n", i); |
||||
} |
||||
|
||||
void on_proc_exit(void (*function) (), Datum arg) |
||||
{ |
||||
atexit(function); |
||||
} |
||||
int |
||||
main(int argc, char **argv) |
||||
{ |
||||
int c, |
||||
errflg = 0; |
||||
char s[80]; |
||||
key_t key = IPC_PRIVATE; |
||||
int nsems = SEMMAX; |
||||
int semflg = 0; |
||||
int unlink = 0; |
||||
int i; |
||||
struct sembuf sops[OPSMAX]; |
||||
u_short array[SEMMAX]; |
||||
union semun arg; |
||||
|
||||
optarg = NULL; |
||||
while (!errflg && (c = getopt(argc, argv, "k:n:cxu")) != -1) |
||||
{ |
||||
switch (c) |
||||
{ |
||||
case 'k': |
||||
key = atoi(optarg); |
||||
break; |
||||
case 'n': |
||||
nsems = atoi(optarg); |
||||
break; |
||||
case 'c': |
||||
semflg |= IPC_CREAT; |
||||
break; |
||||
case 'x': |
||||
semflg |= IPC_EXCL; |
||||
break; |
||||
case 'u': |
||||
unlink = 1; |
||||
break; |
||||
default: |
||||
errflg++; |
||||
} |
||||
} |
||||
if (errflg) |
||||
{ |
||||
printf("usage: tstsem [-k key] [-n nsems] [-cxu]\n"); |
||||
exit(1); |
||||
} |
||||
|
||||
if (unlink) |
||||
{ |
||||
i = shm_unlink("SysV_Sem_Info"); |
||||
if (i == -1) |
||||
perror("shm_unlink"); |
||||
exit(i); |
||||
} |
||||
|
||||
semid = semget(key, nsems, semflg); |
||||
if (semid == -1) |
||||
{ |
||||
perror("semget"); |
||||
exit(semid); |
||||
} |
||||
|
||||
/* test signal interrupts */ |
||||
signal(SIGTERM, sig_handler); |
||||
|
||||
do |
||||
{ |
||||
printf("(-)sem_op, (+)sem_op, (G)ETVAL, (S)ETVAL, GET(P)ID, GET(A)LL, SETA(L)L, GET(N)CNT, GET(Z)CNT, e(x)it: "); |
||||
scanf("%s", s); |
||||
switch (s[0]) |
||||
{ |
||||
case '-': |
||||
case '+': |
||||
sops[0].sem_num = 0; |
||||
sops[0].sem_op = atoi(s); |
||||
if (sops[0].sem_op == 0) |
||||
sops[0].sem_op = s[0] == '+' ? +1 : -1; |
||||
sops[0].sem_flg = 0; |
||||
if (semop(semid, sops, 1) == -1) |
||||
perror("semop"); |
||||
break; |
||||
|
||||
case 'G': |
||||
case 'g': |
||||
i = semctl(semid, 0, GETVAL, arg); |
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
printf("semval = %d\n", i); |
||||
break; |
||||
|
||||
case 'S': |
||||
case 's': |
||||
printf("semval = "); |
||||
scanf("%d", &arg.val); |
||||
if (semctl(semid, 0, SETVAL, arg) == -1) |
||||
perror("semctl"); |
||||
break; |
||||
|
||||
case 'P': |
||||
case 'p': |
||||
i = semctl(semid, 0, GETPID, arg); |
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
printf("PID = %d\n", i); |
||||
break; |
||||
|
||||
case 'A': |
||||
case 'a': |
||||
arg.array = array; |
||||
i = semctl(semid, 0, GETALL, arg); |
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
{ |
||||
for (i = 0; i < nsems; i++) |
||||
printf("semval[%d] = %hu\n", i, arg.array[i]); |
||||
} |
||||
break; |
||||
|
||||
case 'L': |
||||
case 'l': |
||||
arg.array = array; |
||||
for (i = 0; i < nsems; i++) |
||||
{ |
||||
printf("semval[%d] = ", i); |
||||
scanf("%hu", &arg.array[i]); |
||||
} |
||||
if (semctl(semid, 0, SETALL, arg) == -1) |
||||
perror("semctl"); |
||||
break; |
||||
|
||||
case 'N': |
||||
case 'n': |
||||
i = semctl(semid, 0, GETNCNT, arg); |
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
printf("semval = %d\n", i); |
||||
break; |
||||
|
||||
case 'Z': |
||||
case 'z': |
||||
i = semctl(semid, 0, GETZCNT, arg); |
||||
if (i == -1) |
||||
perror("semctl"); |
||||
else |
||||
printf("semval = %d\n", i); |
||||
break; |
||||
} |
||||
} |
||||
while (s[0] != 'x'); |
||||
|
||||
if (semctl(semid, 0, IPC_RMID, arg) == -1) |
||||
{ |
||||
perror("semctl"); |
||||
exit(-1); |
||||
} |
||||
|
||||
exit(0); |
||||
} |
||||
@ -1,98 +0,0 @@ |
||||
/*-------------------------------------------------------------------------
|
||||
* |
||||
* tstshm.c |
||||
* Test of System V Shared Memory Emulation |
||||
* |
||||
* Copyright (c) 1999, repas AEG Automation GmbH |
||||
* |
||||
* |
||||
* IDENTIFICATION |
||||
* $PostgreSQL: pgsql/src/backend/port/qnx4/tstshm.c,v 1.5 2003/11/29 19:51:54 pgsql Exp $ |
||||
* |
||||
*------------------------------------------------------------------------- |
||||
*/ |
||||
|
||||
#include "postgres.h" |
||||
|
||||
#include <unistd.h> |
||||
#include <sys/shm.h> |
||||
|
||||
|
||||
int |
||||
main(int argc, char **argv) |
||||
{ |
||||
int c, |
||||
errflg = 0; |
||||
char s[80]; |
||||
key_t key = 0x1000; |
||||
size_t size = 256; |
||||
int shmid = -1; |
||||
caddr_t addr = NULL; |
||||
|
||||
optarg = NULL; |
||||
while (!errflg && (c = getopt(argc, argv, "k:s:")) != -1) |
||||
{ |
||||
switch (c) |
||||
{ |
||||
case 'k': |
||||
key = atoi(optarg); |
||||
break; |
||||
case 's': |
||||
size = atoi(optarg); |
||||
break; |
||||
default: |
||||
errflg++; |
||||
} |
||||
} |
||||
if (errflg) |
||||
{ |
||||
printf("usage: tstshm [-k key] [-s size]\n"); |
||||
exit(1); |
||||
} |
||||
|
||||
do |
||||
{ |
||||
printf("shm(g)et, shm(a)t, shm(d)t, shm(c)tl, (w)rite, (r)ead, e(x)it: "); |
||||
scanf("%s", s); |
||||
switch (s[0]) |
||||
{ |
||||
case 'g': |
||||
shmid = shmget(key, size, IPC_CREAT | SHM_R | SHM_W); |
||||
if (shmid == -1) |
||||
perror("shmget"); |
||||
break; |
||||
|
||||
case 'a': |
||||
addr = shmat(shmid, NULL, 0); |
||||
if (addr == (void *) -1) |
||||
perror("shmat"); |
||||
break; |
||||
|
||||
case 'd': |
||||
if (shmdt(addr) == -1) |
||||
perror("shmdt"); |
||||
else |
||||
addr = NULL; |
||||
break; |
||||
|
||||
case 'c': |
||||
if (shmctl(shmid, IPC_RMID, NULL) == -1) |
||||
perror("shmctl"); |
||||
else |
||||
shmid = -1; |
||||
break; |
||||
|
||||
case 'w': |
||||
printf("String to write: "); |
||||
scanf("%s", addr); |
||||
break; |
||||
|
||||
case 'r': |
||||
puts(addr); |
||||
break; |
||||
} |
||||
} |
||||
while (s[0] != 'x'); |
||||
|
||||
return 0; |
||||
} |
||||
@ -1,16 +0,0 @@ |
||||
MK_NO_LORDER= true
|
||||
AR= ar
|
||||
AROPT = cr
|
||||
LD= $(AR)
|
||||
LDREL= $(AROPT)
|
||||
LDOUT=
|
||||
LDFLAGS=
|
||||
|
||||
enable_shared = no
|
||||
DLSUFFIX = .so
|
||||
CFLAGS_SL =
|
||||
|
||||
%$(DLSUFFIX): %.o |
||||
@echo 'cannot make shared object $@ from $<'
|
||||
|
||||
sqlmansect = 7
|
||||
@ -1 +0,0 @@ |
||||
LIBS="-lunix" |
||||
@ -1,391 +0,0 @@ |
||||
-- |
||||
-- FLOAT8 |
||||
-- |
||||
CREATE TABLE FLOAT8_TBL(f1 float8); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES (' 0.0 '); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('1004.30 '); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES (' -34.84'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e+200'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('1.2345678901234e-200'); |
||||
-- test for underflow and overflow handling |
||||
SELECT '10e400'::float8; |
||||
ERROR: "10e400" is out of range for type double precision |
||||
SELECT '-10e400'::float8; |
||||
ERROR: "-10e400" is out of range for type double precision |
||||
SELECT '10e-400'::float8; |
||||
ERROR: "10e-400" is out of range for type double precision |
||||
SELECT '-10e-400'::float8; |
||||
ERROR: "-10e-400" is out of range for type double precision |
||||
-- bad input |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES (''); |
||||
ERROR: invalid input syntax for type double precision: "" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES (' '); |
||||
ERROR: invalid input syntax for type double precision: " " |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('xyz'); |
||||
ERROR: invalid input syntax for type double precision: "xyz" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('5.0.0'); |
||||
ERROR: invalid input syntax for type double precision: "5.0.0" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('5 . 0'); |
||||
ERROR: invalid input syntax for type double precision: "5 . 0" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('5. 0'); |
||||
ERROR: invalid input syntax for type double precision: "5. 0" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES (' - 3'); |
||||
ERROR: invalid input syntax for type double precision: " - 3" |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('123 5'); |
||||
ERROR: invalid input syntax for type double precision: "123 5" |
||||
-- special inputs |
||||
SELECT 'NaN'::float8; |
||||
float8 |
||||
-------- |
||||
NaN |
||||
(1 row) |
||||
SELECT 'nan'::float8; |
||||
float8 |
||||
-------- |
||||
NaN |
||||
(1 row) |
||||
|
||||
SELECT ' NAN '::float8; |
||||
float8 |
||||
-------- |
||||
NaN |
||||
(1 row) |
||||
|
||||
SELECT 'infinity'::float8; |
||||
float8 |
||||
---------- |
||||
Infinity |
||||
(1 row) |
||||
|
||||
SELECT ' -INFINiTY '::float8; |
||||
float8 |
||||
----------- |
||||
-Infinity |
||||
(1 row) |
||||
|
||||
-- bad special inputs |
||||
SELECT 'N A N'::float8; |
||||
ERROR: invalid input syntax for type double precision: "N A N" |
||||
SELECT 'NaN x'::float8; |
||||
ERROR: invalid input syntax for type double precision: "NaN x" |
||||
SELECT ' INFINITY x'::float8; |
||||
ERROR: invalid input syntax for type double precision: " INFINITY x" |
||||
SELECT 'Infinity'::float8 + 100.0; |
||||
ERROR: type "double precision" value out of range: overflow |
||||
SELECT 'Infinity'::float8 / 'Infinity'::float8; |
||||
?column? |
||||
---------- |
||||
NaN |
||||
(1 row) |
||||
|
||||
SELECT 'nan'::float8 / 'nan'::float8; |
||||
?column? |
||||
---------- |
||||
NaN |
||||
(1 row) |
||||
|
||||
SELECT '' AS five, * FROM FLOAT8_TBL; |
||||
five | f1 |
||||
------+---------------------- |
||||
| 0 |
||||
| 1004.3 |
||||
| -34.84 |
||||
| 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 |
||||
(5 rows) |
||||
|
||||
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE f.f1 <> '1004.3'; |
||||
four | f1 |
||||
------+---------------------- |
||||
| 0 |
||||
| -34.84 |
||||
| 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 |
||||
(4 rows) |
||||
|
||||
SELECT '' AS one, f.* FROM FLOAT8_TBL f WHERE f.f1 = '1004.3'; |
||||
one | f1 |
||||
-----+-------- |
||||
| 1004.3 |
||||
(1 row) |
||||
|
||||
SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE '1004.3' > f.f1; |
||||
three | f1 |
||||
-------+---------------------- |
||||
| 0 |
||||
| -34.84 |
||||
| 1.2345678901234e-200 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS three, f.* FROM FLOAT8_TBL f WHERE f.f1 < '1004.3'; |
||||
three | f1 |
||||
-------+---------------------- |
||||
| 0 |
||||
| -34.84 |
||||
| 1.2345678901234e-200 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE '1004.3' >= f.f1; |
||||
four | f1 |
||||
------+---------------------- |
||||
| 0 |
||||
| 1004.3 |
||||
| -34.84 |
||||
| 1.2345678901234e-200 |
||||
(4 rows) |
||||
|
||||
SELECT '' AS four, f.* FROM FLOAT8_TBL f WHERE f.f1 <= '1004.3'; |
||||
four | f1 |
||||
------+---------------------- |
||||
| 0 |
||||
| 1004.3 |
||||
| -34.84 |
||||
| 1.2345678901234e-200 |
||||
(4 rows) |
||||
|
||||
SELECT '' AS three, f.f1, f.f1 * '-10' AS x |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | x |
||||
-------+----------------------+----------------------- |
||||
| 1004.3 | -10043 |
||||
| 1.2345678901234e+200 | -1.2345678901234e+201 |
||||
| 1.2345678901234e-200 | -1.2345678901234e-199 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS three, f.f1, f.f1 + '-10' AS x |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | x |
||||
-------+----------------------+---------------------- |
||||
| 1004.3 | 994.3 |
||||
| 1.2345678901234e+200 | 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 | -10 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS three, f.f1, f.f1 / '-10' AS x |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | x |
||||
-------+----------------------+----------------------- |
||||
| 1004.3 | -100.43 |
||||
| 1.2345678901234e+200 | -1.2345678901234e+199 |
||||
| 1.2345678901234e-200 | -1.2345678901234e-201 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS three, f.f1, f.f1 - '-10' AS x |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | x |
||||
-------+----------------------+---------------------- |
||||
| 1004.3 | 1014.3 |
||||
| 1.2345678901234e+200 | 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 | 10 |
||||
(3 rows) |
||||
|
||||
SELECT '' AS one, f.f1 ^ '2.0' AS square_f1 |
||||
FROM FLOAT8_TBL f where f.f1 = '1004.3'; |
||||
one | square_f1 |
||||
-----+------------ |
||||
| 1008618.49 |
||||
(1 row) |
||||
|
||||
-- absolute value |
||||
SELECT '' AS five, f.f1, @f.f1 AS abs_f1 |
||||
FROM FLOAT8_TBL f; |
||||
five | f1 | abs_f1 |
||||
------+----------------------+---------------------- |
||||
| 0 | 0 |
||||
| 1004.3 | 1004.3 |
||||
| -34.84 | 34.84 |
||||
| 1.2345678901234e+200 | 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 | 1.2345678901234e-200 |
||||
(5 rows) |
||||
|
||||
-- truncate |
||||
SELECT '' AS five, f.f1, trunc(f.f1) AS trunc_f1 |
||||
FROM FLOAT8_TBL f; |
||||
five | f1 | trunc_f1 |
||||
------+----------------------+---------------------- |
||||
| 0 | 0 |
||||
| 1004.3 | 1004 |
||||
| -34.84 | -34 |
||||
| 1.2345678901234e+200 | 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 | 0 |
||||
(5 rows) |
||||
|
||||
-- round |
||||
SELECT '' AS five, f.f1, round(f.f1) AS round_f1 |
||||
FROM FLOAT8_TBL f; |
||||
five | f1 | round_f1 |
||||
------+----------------------+---------------------- |
||||
| 0 | 0 |
||||
| 1004.3 | 1004 |
||||
| -34.84 | -35 |
||||
| 1.2345678901234e+200 | 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 | 0 |
||||
(5 rows) |
||||
|
||||
-- ceil / ceiling |
||||
select ceil(f1) as ceil_f1 from float8_tbl f; |
||||
ceil_f1 |
||||
---------------------- |
||||
0 |
||||
1005 |
||||
-34 |
||||
1.2345678901234e+200 |
||||
1 |
||||
(5 rows) |
||||
|
||||
select ceiling(f1) as ceiling_f1 from float8_tbl f; |
||||
ceiling_f1 |
||||
---------------------- |
||||
0 |
||||
1005 |
||||
-34 |
||||
1.2345678901234e+200 |
||||
1 |
||||
(5 rows) |
||||
|
||||
-- floor |
||||
select floor(f1) as floor_f1 from float8_tbl f; |
||||
floor_f1 |
||||
---------------------- |
||||
0 |
||||
1004 |
||||
-35 |
||||
1.2345678901234e+200 |
||||
0 |
||||
(5 rows) |
||||
|
||||
-- sign |
||||
select sign(f1) as sign_f1 from float8_tbl f; |
||||
sign_f1 |
||||
--------- |
||||
0 |
||||
1 |
||||
-1 |
||||
1 |
||||
1 |
||||
(5 rows) |
||||
|
||||
-- square root |
||||
SELECT sqrt(float8 '64') AS eight; |
||||
eight |
||||
------- |
||||
8 |
||||
(1 row) |
||||
|
||||
SELECT |/ float8 '64' AS eight; |
||||
eight |
||||
------- |
||||
8 |
||||
(1 row) |
||||
|
||||
SELECT '' AS three, f.f1, |/f.f1 AS sqrt_f1 |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | sqrt_f1 |
||||
-------+----------------------+----------------------- |
||||
| 1004.3 | 31.6906926399535 |
||||
| 1.2345678901234e+200 | 1.11111110611109e+100 |
||||
| 1.2345678901234e-200 | 1.11111110611109e-100 |
||||
(3 rows) |
||||
|
||||
-- power |
||||
SELECT power(float8 '144', float8 '0.5'); |
||||
power |
||||
------- |
||||
12 |
||||
(1 row) |
||||
|
||||
-- take exp of ln(f.f1) |
||||
SELECT '' AS three, f.f1, exp(ln(f.f1)) AS exp_ln_f1 |
||||
FROM FLOAT8_TBL f |
||||
WHERE f.f1 > '0.0'; |
||||
three | f1 | exp_ln_f1 |
||||
-------+----------------------+----------------------- |
||||
| 1004.3 | 1004.3 |
||||
| 1.2345678901234e+200 | 1.23456789012337e+200 |
||||
| 1.2345678901234e-200 | 1.23456789012338e-200 |
||||
(3 rows) |
||||
|
||||
-- cube root |
||||
SELECT ||/ float8 '27' AS three; |
||||
three |
||||
------- |
||||
3 |
||||
(1 row) |
||||
|
||||
SELECT '' AS five, f.f1, ||/f.f1 AS cbrt_f1 FROM FLOAT8_TBL f; |
||||
five | f1 | cbrt_f1 |
||||
------+----------------------+----------------------- |
||||
| 0 | 0 |
||||
| 1004.3 | 10.014312837827 |
||||
| -34.84 | -3.26607421344208 |
||||
| 1.2345678901234e+200 | 4.97933859234757e+066 |
||||
| 1.2345678901234e-200 | 2.3112042409018e-067 |
||||
(5 rows) |
||||
|
||||
SELECT '' AS five, * FROM FLOAT8_TBL; |
||||
five | f1 |
||||
------+---------------------- |
||||
| 0 |
||||
| 1004.3 |
||||
| -34.84 |
||||
| 1.2345678901234e+200 |
||||
| 1.2345678901234e-200 |
||||
(5 rows) |
||||
|
||||
UPDATE FLOAT8_TBL |
||||
SET f1 = FLOAT8_TBL.f1 * '-1' |
||||
WHERE FLOAT8_TBL.f1 > '0.0'; |
||||
SELECT '' AS bad, f.f1 * '1e200' from FLOAT8_TBL f; |
||||
ERROR: type "double precision" value out of range: overflow |
||||
SELECT '' AS bad, f.f1 ^ '1e200' from FLOAT8_TBL f; |
||||
ERROR: result is out of range |
||||
SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 = '0.0' ; |
||||
ERROR: cannot take logarithm of zero |
||||
SELECT '' AS bad, ln(f.f1) from FLOAT8_TBL f where f.f1 < '0.0' ; |
||||
ERROR: cannot take logarithm of a negative number |
||||
SELECT '' AS bad, exp(f.f1) from FLOAT8_TBL f; |
||||
ERROR: result is out of range |
||||
SELECT '' AS bad, f.f1 / '0.0' from FLOAT8_TBL f; |
||||
ERROR: division by zero |
||||
SELECT '' AS five, * FROM FLOAT8_TBL; |
||||
five | f1 |
||||
------+----------------------- |
||||
| 0 |
||||
| -34.84 |
||||
| -1004.3 |
||||
| -1.2345678901234e+200 |
||||
| -1.2345678901234e-200 |
||||
(5 rows) |
||||
|
||||
-- test for over- and underflow |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('10e400'); |
||||
ERROR: "10e400" is out of range for type double precision |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e400'); |
||||
ERROR: "-10e400" is out of range for type double precision |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('10e-400'); |
||||
ERROR: "10e-400" is out of range for type double precision |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-10e-400'); |
||||
ERROR: "-10e-400" is out of range for type double precision |
||||
-- maintain external table consistency across platforms |
||||
-- delete all values and reinsert well-behaved ones |
||||
DELETE FROM FLOAT8_TBL; |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('0.0'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-34.84'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1004.30'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e+200'); |
||||
INSERT INTO FLOAT8_TBL(f1) VALUES ('-1.2345678901234e-200'); |
||||
SELECT '' AS five, * FROM FLOAT8_TBL; |
||||
five | f1 |
||||
------+----------------------- |
||||
| 0 |
||||
| -34.84 |
||||
| -1004.3 |
||||
| -1.2345678901234e+200 |
||||
| -1.2345678901234e-200 |
||||
(5 rows) |
||||
|
||||
@ -1,11 +1,8 @@ |
||||
float4/.*-qnx=float4-exp-three-digits |
||||
float4/i.86-pc-mingw32=float4-exp-three-digits |
||||
float8/i.86-.*-freebsd[234]=float8-small-is-zero |
||||
float8/i.86-.*-openbsd=float8-small-is-zero |
||||
float8/i.86-.*-netbsd=float8-small-is-zero |
||||
float8/m68k-.*-netbsd=float8-small-is-zero |
||||
float8/.*-qnx=float8-exp-three-digits |
||||
float8/i.86-pc-mingw32=float8-exp-three-digits-win32 |
||||
float8/i.86-pc-cygwin=float8-small-is-zero |
||||
int8/.*-qnx=int8-exp-three-digits |
||||
int8/i.86-pc-mingw32=int8-exp-three-digits |
||||
|
||||
Loading…
Reference in new issue