Commit Graph

216 Commits

Author SHA1 Message Date
Heikki Linnakangas
025c02420d Speed up CRC calculation using slicing-by-8 algorithm.
This speeds up WAL generation and replay. The new algorithm is
significantly faster with large inputs, like full-page images or when
inserting wide rows. It is slower with tiny inputs, i.e. less than 10 bytes
or so, but the speedup with longer inputs more than make up for that. Even
small WAL records at least have 24 byte header in the front.

The output is identical to the current byte-at-a-time computation, so this
does not affect compatibility. The new algorithm is only used for the
CRC-32C variant, not the legacy version used in tsquery or the
"traditional" CRC-32 used in hstore and ltree. Those are not as performance
critical, and are usually only applied over small inputs, so it seems
better to not carry around the extra lookup tables to speed up those rare
cases.

Abhijit Menon-Sen
2015-02-10 10:54:40 +02:00
Tom Lane
8883bae33b Remove configure test for nonstandard variants of getpwuid_r().
We had code that supposed that some platforms might offer a nonstandard
version of getpwuid_r() with only four arguments.  However, the 5-argument
definition has been standardized at least since the Single Unix Spec v2,
which is our normal reference for what's portable across all Unix-oid
platforms.  (What's more, this wasn't the only pre-standardization version
of getpwuid_r(); my old HPUX 10.20 box has still another signature.)
So let's just get rid of the now-useless configure step.
2015-01-11 12:52:37 -05:00
Noah Misch
b779168ffe Detect PG_PRINTF_ATTRIBUTE automatically.
This eliminates gobs of "unrecognized format function type" warnings
under MinGW compilers predating GCC 4.4.
2014-11-23 09:34:03 -05:00
Andres Freund
b64d92f1a5 Add a basic atomic ops API abstracting away platform/architecture details.
Several upcoming performance/scalability improvements require atomic
operations. This new API avoids the need to splatter compiler and
architecture dependent code over all the locations employing atomic
ops.

For several of the potential usages it'd be problematic to maintain
both, a atomics using implementation and one using spinlocks or
similar. In all likelihood one of the implementations would not get
tested regularly under concurrency. To avoid that scenario the new API
provides a automatic fallback of atomic operations to spinlocks. All
properties of atomic operations are maintained. This fallback -
obviously - isn't as fast as just using atomic ops, but it's not bad
either. For one of the future users the atomics ontop spinlocks
implementation was actually slightly faster than the old purely
spinlock using implementation. That's important because it reduces the
fear of regressing older platforms when improving the scalability for
new ones.

The API, loosely modeled after the C11 atomics support, currently
provides 'atomic flags' and 32 bit unsigned integers. If the platform
efficiently supports atomic 64 bit unsigned integers those are also
provided.

To implement atomics support for a platform/architecture/compiler for
a type of atomics 32bit compare and exchange needs to be
implemented. If available and more efficient native support for flags,
32 bit atomic addition, and corresponding 64 bit operations may also
be provided. Additional useful atomic operations are implemented
generically ontop of these.

The implementation for various versions of gcc, msvc and sun studio have
been tested. Additional existing stub implementations for
* Intel icc
* HUPX acc
* IBM xlc
are included but have never been tested. These will likely require
fixes based on buildfarm and user feedback.

As atomic operations also require barriers for some operations the
existing barrier support has been moved into the atomics code.

Author: Andres Freund with contributions from Oskari Saarenmaa
Reviewed-By: Amit Kapila, Robert Haas, Heikki Linnakangas and Álvaro Herrera
Discussion: CA+TgmoYBW+ux5-8Ja=Mcyuy8=VXAnVRHp3Kess6Pn3DMXAPAEA@mail.gmail.com,
    20131015123303.GH5300@awork2.anarazel.de,
    20131028205522.GI20248@awork2.anarazel.de
2014-09-25 23:49:05 +02:00
Andres Freund
7e3f728353 Fix configure check for %z printf support after INT64_MODIFIER changes.
The PGAC_FUNC_SNPRINTF_SIZE_T_SUPPORT test was broken by
ce486056ec. Among others it made the UINT64_FORMAT macro to be
defined in c.h, instead of directly being defined by configure.

This lead to the replacement printf being used on all platforms for a
while. Which seems to work, because this was only used due to
different profiles ;)

Fix by relying on INT64_MODIFIER instead.
2014-09-18 09:59:10 +02:00
Heikki Linnakangas
ce486056ec Add #define INT64_MODIFIER for the printf length modifier for 64-bit ints.
We have had INT64_FORMAT and UINT64_FORMAT for a long time, but that's not
good enough if you want something more exotic, like "%20lld".

Abhijit Menon-Sen, per Andres Freund's suggestion.
2014-08-21 09:56:44 +03:00
Noah Misch
e565ff7553 Move PGAC_LDAP_SAFE to config/programs.m4.
This restores the style of keeping configure.in free of AC_DEFUN.  Per
gripe from Tom Lane.
2014-07-25 18:51:35 -04:00
Tom Lane
2e8ce9ae46 Remove some useless code in the configure script.
Almost ten years ago, commit e48322a6d6 broke
the logic in ACX_PTHREAD by looping through all the possible flags rather
than stopping with the first one that would work.  This meant that
$acx_pthread_ok was no longer meaningful after the loop; it would usually
be "no", whether or not we'd found working thread flags.  The reason nobody
noticed is that Postgres doesn't actually use any of the symbols set up
by the code after the loop.  Rather than complicate things some more to
make it work as designed, let's just remove all that dead code, and thereby
save a few cycles in each configure run.
2014-07-01 17:51:53 -04:00
Peter Eisentraut
55fb759ab3 Silence Bison deprecation warnings
Bison >=3.0 issues warnings about

    %name-prefix="base_yy"

instead of the now preferred

    %name-prefix "base_yy"

but the latter doesn't work with Bison 2.3 or less.  So for now we
silence the deprecation warnings.
2014-06-03 22:36:35 -04:00
Tom Lane
20561acf93 On OS X, link libpython normally, ignoring the "framework" framework.
As of Xcode 5.0, Apple isn't including the Python framework as part of the
SDK-level files, which means that linking to it might fail depending on
whether Xcode thinks you've selected a specific SDK version.  According to
their Tech Note 2328, they've basically deprecated the framework method of
linking to libpython and are telling people to link to the shared library
normally.  (I'm pretty sure this is in direct contradiction to the advice
they were giving a few years ago, but whatever.)  Testing says that this
approach works fine at least as far back as OS X 10.4.11, so let's just
rip out the framework special case entirely.  We do still need a special
case to decide that OS X provides a shared library at all, unfortunately
(I wonder why the distutils check doesn't work ...).  But this is still
less of a special case than before, so it's fine.

Back-patch to all supported branches, since we'll doubtless be hearing
about this more as more people update to recent Xcode.
2014-05-30 18:19:06 -04:00
Tom Lane
eaba54c20c Accept tcl 8.6 in configure's probe for tclsh.
Usually the search would find plain "tclsh" without any trouble,
but some installations might only have the version-numbered flavor
of that program.

No compatibility problems have been reported with 8.6, so we might
as well back-patch this to all active branches.

Christoph Berg
2014-05-10 10:48:01 -04:00
Tom Lane
7fa5bc43aa Update config.guess and config.sub 2014-05-10 10:33:34 -04:00
Bruce Momjian
0a78320057 pgindent run for 9.4
This includes removing tabs after periods in C comments, which was
applied to back branches, so this change should not effect backpatching.
2014-05-06 12:12:18 -04:00
Tom Lane
4c8aa8b5ae Fix "quiet inline" configure test for newer clang compilers.
This test used to just define an unused static inline function and check
whether that causes a warning.  But newer clang versions warn about
unused static inline functions when defined inside a .c file, but not
when defined in an included header, which is the case we care about.
Change the test to cope.

Andres Freund
2014-05-01 16:16:36 -04:00
Tom Lane
ac4ef637ad Allow use of "z" flag in our printf calls, and use it where appropriate.
Since C99, it's been standard for printf and friends to accept a "z" size
modifier, meaning "whatever size size_t has".  Up to now we've generally
dealt with printing size_t values by explicitly casting them to unsigned
long and using the "l" modifier; but this is really the wrong thing on
platforms where pointers are wider than longs (such as Win64).  So let's
start using "z" instead.  To ensure we can do that on all platforms, teach
src/port/snprintf.c to understand "z", and add a configure test to force
use of that implementation when the platform's version doesn't handle "z".

Having done that, modify a bunch of places that were using the
unsigned-long hack to use "z" instead.  This patch doesn't pretend to have
gotten everyplace that could benefit, but it catches many of them.  I made
an effort in particular to ensure that all uses of the same error message
text were updated together, so as not to increase the number of
translatable strings.

It's possible that this change will result in format-string warnings from
pre-C99 compilers.  We might have to reconsider if there are any popular
compilers that will warn about this; but let's start by seeing what the
buildfarm thinks.

Andres Freund, with a little additional work by me
2014-01-23 17:18:33 -05:00
Peter Eisentraut
5dd41f3574 Remove maintainer-check target, fold into normal build
make maintainer-check was obscure and rarely called in practice, and
many breakages were missed.  Fold everything that make maintainer-check
used to do into the normal build.  Specifically:

- Call duplicate_oids when genbki.pl is called.

- Check for tabs in SGML files when the documentation is built.

- Run msgfmt with the -c option during the regular build.  Add an
  additional configure check to see whether we are using the GNU
  version.  (make maintainer-check probably used to fail with non-GNU
  msgfmt.)

Keep maintainer-check as around as phony target for the time being in
case anyone is calling it.  But it won't do anything anymore.
2013-10-10 20:11:56 -04:00
Tom Lane
5242fefb47 Be consistent about #define'ing configure symbols as "1" not empty.
This is just neatnik-ism, since all the tests in the code are #ifdefs,
but we shouldn't specify symbols as "Define to 1 ..." and then not
actually define them that way.
2013-06-15 14:11:43 -04:00
Simon Riggs
fdea2530bd Compiler optimizations for page checksum code.
Ants Aasma and Jeff Davis
2013-04-30 06:59:26 +01:00
Peter Eisentraut
b53b603c91 Update config.guess and config.sub 2013-04-26 22:13:03 -04:00
Tom Lane
b853eb9718 Improve handling of ereport(ERROR) and elog(ERROR).
In commit 71450d7fd6, we added code to inform
suitably-intelligent compilers that ereport() doesn't return if the elevel
is ERROR or higher.  This patch extends that to elog(), and also fixes a
double-evaluation hazard that the previous commit created in ereport(),
as well as reducing the emitted code size.

The elog() improvement requires the compiler to support __VA_ARGS__, which
should be available in just about anything nowadays since it's required by
C99.  But our minimum language baseline is still C89, so add a configure
test for that.

The previous commit assumed that ereport's elevel could be evaluated twice,
which isn't terribly safe --- there are already counterexamples in xlog.c.
On compilers that have __builtin_constant_p, we can use that to protect the
second test, since there's no possible optimization gain if the compiler
doesn't know the value of elevel.  Otherwise, use a local variable inside
the macros to prevent double evaluation.  The local-variable solution is
inferior because (a) it leads to useless code being emitted when elevel
isn't constant, and (b) it increases the optimization level needed for the
compiler to recognize that subsequent code is unreachable.  But it seems
better than not teaching non-gcc compilers about unreachability at all.

Lastly, if the compiler has __builtin_unreachable(), we can use that
instead of abort(), resulting in a noticeable code savings since no
function call is actually emitted.  However, it seems wise to do this only
in non-assert builds.  In an assert build, continue to use abort(), so that
the behavior will be predictable and debuggable if the "impossible"
happens.

These changes involve making the ereport and elog macros emit do-while
statement blocks not just expressions, which forces small changes in
a few call sites.

Andres Freund, Tom Lane, Heikki Linnakangas
2013-01-13 18:40:09 -05:00
Andrew Dunstan
7fb97ecd13 Detect Windows perl linkage parameters in configure script.
This means we can now construct a configure test for the library
presence. Previously these parameters were only figured out at
build time in plperl's GnuMakefile.
2013-01-09 17:49:23 -05:00
Tom Lane
5aec9ccafe Fix plpython build on older versions of OS X.
Pre-Lion versions of Apple's linker don't allow space between -F and its
argument.  (Snow Leopard is nice enough to tell you that in so many words,
but older versions just fail with very obscure link errors, as seen on
buildfarm member locust for instance.)  Oversight in commit
fc8745070a.
2013-01-06 15:49:53 -05:00
Peter Eisentraut
fc8745070a PL/Python: Make build on OS X more flexible
The PL/Python build on OS X was previously hardcoded to use the system
installation of Python, ignoring whatever was specified to configure.
Except that it would use the header files from configure, which could
lead to mismatches.  It was not possible to build against a custom
Python installation.

Now, we check in configure how the specified Python installation was
built and use that, supporting framework and non-framework builds.
2013-01-05 08:56:14 -05:00
Alvaro Herrera
f46baf601d Rename USE_INLINE to PG_USE_INLINE
The former name was too likely to conflict with symbols from external
headers; and, as seen in recent buildfarm failures in member spoonbill,
it has now happened at least in plpython.
2012-10-09 11:17:33 -03:00
Tom Lane
ea473fb2de Add infrastructure for compile-time assertions about variable types.
Currently, the macros only work with fairly recent gcc versions, but there
is room to expand them to other compilers that have comparable features.

Heavily revised and autoconfiscated version of a patch by Andres Freund.
2012-09-30 14:38:31 -04:00
Peter Eisentraut
9cffb187d8 Also check for Python platform-specific include directory
Python can be built to have two separate include directories: one for
platform-independent files and one for platform-specific files.  So
far, this has apparently never mattered for a PL/Python build.  But
with the new multi-arch Python packages in Debian and Ubuntu, this is
becoming the standard configuration on these platforms, so we must
check these directories separately to be able to build there.

Also add a bit of reporting in configure to be able to see better what
is going on with this.
2012-08-29 23:05:35 -04:00
Peter Eisentraut
b748d8f280 Fix install-strip on Mac OS X
There was a hack put into install-sh to call strip with the correct
options on Mac OS X.  But that never worked, because configure
disabled stripping on that platform altogether.  So remove that dead
code, and while we're at it, update install-sh to the latest upstream
source (from Automake).

Instead, set up the right strip options in programs.m4, so this now
actually works the way it was originally intended.
2012-08-21 23:42:43 -04:00
Tom Lane
f667747b6d Put back AC_REQUIRE([AC_STRUCT_TM]).
The BSD-ish members of the buildfarm all seem to think removing this
was a bad idea.  It looks to me like it resulted in omitting the system
header inclusion necessary to detect the fields of struct tm correctly.
2012-05-14 23:06:48 -04:00
Peter Eisentraut
ff4628f37a Remove unused AC_DEFINE symbols
ENABLE_DTRACE            unused as of a7b7b07af3
HAVE_ERR_SET_MARK        unused as of 4ed4b6c54e
HAVE_FCVT                unused as of 4553e1d80f
HAVE_STRUCT_SOCKADDR_UN  unused as of b4cea00a1f
HAVE_SYSCONF             unused as of f83356c7f5
TM_IN_SYS_TIME           never used, obsolescent per Autoconf documentation
2012-05-14 22:51:21 +03:00
Peter Eisentraut
cf09230e19 Update config.guess and config.sub 2012-05-08 20:46:13 +03:00
Tom Lane
f2386d7136 Fix configure's search for collateindex.pl.
PGAC_PATH_COLLATEINDEX supposed that it could use AC_PATH_PROGS to search
for collateindex.pl, but that macro will only accept files that are marked
executable, and at least some DocBook installations don't mark the script
executable (a case the docs Makefile was already prepared for).  Accept the
script if it's present and readable in $DOCBOOKSTYLE/bin, and otherwise
search the PATH as before.

Having fixed that up, we don't need the fallback case that was in the docs
Makefile, and instead can throw an understandable error if configure didn't
find the script.  Per recent trouble report from John Lumby.
2012-03-22 00:46:03 -04:00
Tom Lane
c0efc2c2ab Don't reject threaded Python on FreeBSD.
According to Chris Rees, this has worked for awhile, and the current
FreeBSD port is removing the test anyway.
2012-02-20 16:21:28 -05:00
Andrew Dunstan
1a0c76c32f Enable compiling with the mingw-w64 32 bit compiler.
Original patch by Lars Kanis, reviewed by Nishiyama Tomoaki and tweaked some by me.

This compiler, or at least the latest version of it, is currently broken, and
only passes the regression tests if built with -O0.
2011-12-10 15:35:41 -05:00
Peter Eisentraut
80ac853f05 python.m4: Remove useless "import string" calls
They have been unneeded since the use of the string module has been
removed in a65ed83f8a.
2011-11-29 06:50:11 +02:00
Peter Eisentraut
f8c2029ef0 Improve detection of Python 3.2 installations
Because of ABI tagging, the library version number might no longer be
exactly the Python version number, so do extra lookups.  This affects
installations without a shared library, such as ActiveState's
installer.

Also update the way to detect the location of the 'config' directory,
which can also be versioned.

Ashesh Vashi
2011-08-18 14:43:16 +03:00
Tom Lane
44404f3945 Adjust configure to use "+Olibmerrno" with HP-UX C compiler, if possible.
This is reported to be necessary on some versions of that OS.  In service
of this, cause PGAC_PROG_CC_CFLAGS_OPT to reject switches that result in
compiler warnings, since on yet other versions of that OS, the switch does
nothing except provoke a warning.

Report and patch by Ibrar Ahmed, further tweaking by me.
2011-05-26 17:29:33 -04:00
Peter Eisentraut
8d89549380 Update config.guess and config.sub 2011-05-19 22:14:56 +03:00
Peter Eisentraut
f005384532 Better support for thread-support flag detection with clang
When testing the stderr produced by various thread-support flags, also
run a compilation in addition to a link, because clang warns on
certain flags when compiling but not when linking.
2011-02-16 23:15:54 +02:00
Peter Eisentraut
414c5a2ea6 Per-column collation support
This adds collation support for columns and domains, a COLLATE clause
to override it per expression, and B-tree index support.

Peter Eisentraut
reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch
2011-02-08 23:04:18 +02:00
Andrew Dunstan
91812df4ed Enable building with the Mingw64 compiler.
This can be used to build 64 bit Windows binaries, not only on 64 bit
Windows but on supported cross-compiling hosts including 32 bit Windows,
Cygwin, Darwin and Linux.
2011-01-30 19:56:46 -05:00
Peter Eisentraut
fc946c39ae Remove useless whitespace at end of lines 2010-11-23 22:34:55 +02:00
Alvaro Herrera
9350824e70 find -path is not portable, so use grep -v instead.
Per previous failure of buildfarm member koi (which is no longer
failing, alas).
2010-10-25 10:04:00 -03:00
Peter Eisentraut
804a786c95 Add/fix caching on some configure checks 2010-09-29 22:38:04 +03:00
Alvaro Herrera
fde5ce4fe2 Prevent doc/src/sgml subdirs from being created, instead of deleting
them after the fact.  This is a more elegant fix for bug #5595.
2010-09-24 01:32:52 -04:00
Tom Lane
651377933e Fix remaining stray references to CVS.
These are just cosmetic and don't seem worth back-patching far.
I put them into 9.0 just because it was trivial to do so.
2010-09-22 19:51:39 -04:00
Magnus Hagander
9f2e211386 Remove cvs keywords from all files. 2010-09-20 22:08:53 +02:00
Tom Lane
39ce62b110 Don't auto-create the subdirectories holding built documentation in a VPATH
build tree.  If we actually build the docs in the VPATH tree, those dirs
will get created then; but if they're present and empty, they capture the
vpathsearch searches in "make install", preventing installation of prebuilt
docs that might exist in the source tree.  Per bug #5595 from Dmtiriy Igrishin.
Fix based on idea from Peter Eisentraut.
2010-08-26 18:34:37 +00:00
Peter Eisentraut
3f11971916 Remove extra newlines at end and beginning of files, add missing newlines
at end of files.
2010-08-19 05:57:36 +00:00
Michael Meskes
29259531c7 Replace self written 'long long int' configure test by standard 'AC_TYPE_LONG_LONG_INT' macro call. 2010-05-25 17:28:20 +00:00
Michael Meskes
555a02f910 Added a configure test for "long long" datatypes. So far this is only used in ecpg and replaces the old test that was kind of hackish. 2010-05-25 14:32:55 +00:00