postgresql/src/port
Nathan Bossart cc4826dd5e Inline pg_popcount{32,64} into pg_popcount().
On some systems, calls to pg_popcount{32,64} are indirected through
a function pointer.  This commit converts pg_popcount() to a
function pointer on those systems so that we can inline the
appropriate pg_popcount{32,64} implementations into each of the
pg_popcount() implementations.  Since pg_popcount() may call
pg_popcount{32,64} several times, this can significantly improve
its performance.

Suggested-by: David Rowley
Reviewed-by: David Rowley
Discussion: https://postgr.es/m/CAApHDvrb7MJRB6JuKLDEY2x_LKdFHwVbogpjZBCX547i5%2BrXOQ%40mail.gmail.com
2024-03-19 14:46:16 -05:00
..
.gitignore Build src/port files as a library with -fPIC, and use that in libpq. 2018-09-27 11:23:43 -04:00
Makefile Remove MSVC scripts 2023-12-20 09:44:37 +09:00
README Remove AIX support 2024-02-28 15:17:23 +04:00
bsearch_arg.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
chklocale.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
dirent.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
dirmod.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
explicit_bzero.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
getopt.c Use our own getopt() on OpenBSD. 2019-01-18 15:06:26 -05:00
getopt_long.c Teach in-tree getopt_long() to move non-options to the end of argv. 2023-07-12 20:34:39 -07:00
getpeereid.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
inet_aton.c Correct include file name in inet_aton fallback. 2017-10-01 17:41:00 -07:00
inet_net_ntop.c Remove configure probe for sockaddr_in6 and require AF_INET6. 2022-08-26 10:18:30 +12:00
kill.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
meson.build Fix gai_strerror() thread-safety on Windows. 2024-02-12 11:14:21 +13:00
mkdtemp.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
noblock.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
open.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
path.c Use printf's %m format instead of strerror(errno) in more places 2024-03-12 10:02:54 +09:00
pg_bitutils.c Inline pg_popcount{32,64} into pg_popcount(). 2024-03-19 14:46:16 -05:00
pg_crc32c_armv8.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc32c_armv8_choose.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc32c_loongarch.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc32c_sb8.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc32c_sse42.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_crc32c_sse42_choose.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pg_strong_random.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pgcheckdir.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pgmkdirp.c Fix various typos and grammar errors in comments. 2015-04-26 18:42:31 +02:00
pgsleep.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pgstrcasecmp.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pgstrsignal.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
pqsignal.c Centralize logic for restoring errno in signal handlers. 2024-02-14 16:34:18 -06:00
pthread-win32.h Clean up Windows-specific mutex code in libpq and ecpglib. 2024-02-09 11:11:39 -05:00
pthread_barrier_wait.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
qsort.c Use sort_template.h for qsort() and qsort_arg(). 2021-03-03 17:02:32 +13:00
qsort_arg.c Use sort_template.h for qsort() and qsort_arg(). 2021-03-03 17:02:32 +13:00
quotes.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
snprintf.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
strerror.c Remove AIX support 2024-02-28 15:17:23 +04:00
strlcat.c pgindent run for 9.4 2014-05-06 12:12:18 -04:00
strlcpy.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
strnlen.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
strtof.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
system.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
tar.c Add and use symbolic constants for tar header offsets and file types. 2023-08-01 13:50:42 -04:00
user.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32.ico Revert binary change in copyright year adjustment. 2012-01-01 19:40:13 -05:00
win32common.c Remove "#ifdef WIN32" guards from src/port/win32*.c 2024-02-12 11:57:45 +02:00
win32dlopen.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32env.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32error.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32fdatasync.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32fseek.c Remove "#ifdef WIN32" guards from src/port/win32*.c 2024-02-12 11:57:45 +02:00
win32gai_strerror.c Fix gai_strerror() thread-safety on Windows. 2024-02-12 11:14:21 +13:00
win32getrusage.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32gettimeofday.c Simplify gettimeofday for Windows. 2022-08-07 12:35:36 +12:00
win32link.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32ntdll.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32pread.c Fix overflow in Windows replacement pg_pread/pg_pwrite. 2024-03-03 08:40:41 +13:00
win32pwrite.c Fix overflow in Windows replacement pg_pread/pg_pwrite. 2024-03-03 08:40:41 +13:00
win32security.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32setlocale.c Update copyright for 2024 2024-01-03 20:49:05 -05:00
win32stat.c Remove "#ifdef WIN32" guards from src/port/win32*.c 2024-02-12 11:57:45 +02:00
win32ver.rc Update copyright for 2024 2024-01-03 20:49:05 -05:00

README

src/port/README

libpgport
=========

libpgport must have special behavior.  It supplies functions to both
libraries and applications.  However, there are two complexities:

1)  Libraries need to use object files that are compiled with exactly
the same flags as the library.  libpgport might not use the same flags,
so it is necessary to recompile the object files for individual
libraries.  This is done by removing -lpgport from the link line:

        # Need to recompile any libpgport object files
        LIBS := $(filter-out -lpgport, $(LIBS))

and adding infrastructure to recompile the object files:

        OBJS= execute.o typename.o descriptor.o data.o error.o prepare.o memory.o \
                connect.o misc.o path.o exec.o \
                $(filter strlcat.o, $(LIBOBJS))

The problem is that there is no testing of which object files need to be
added, but missing functions usually show up when linking user
applications.

2) For applications, we use -lpgport before -lpq, so the static files
from libpgport are linked first.  This avoids having applications
dependent on symbols that are _used_ by libpq, but not intended to be
exported by libpq.  libpq's libpgport usage changes over time, so such a
dependency is a problem.  Windows, Linux, and macOS use an export
list to control the symbols exported by libpq.