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Standardize on xoroshiro128** as our basic PRNG algorithm, eliminating a bunch of platform dependencies as well as fundamentally-obsolete PRNG code. In addition, this API replacement will ease replacing the algorithm again in future, should that become necessary. xoroshiro128** is a few percent slower than the drand48 family, but it can produce full-width 64-bit random values not only 48-bit, and it should be much more trustworthy. It's likely to be noticeably faster than the platform's random(), depending on which platform you are thinking about; and we can have non-global state vectors easily, unlike with random(). It is not cryptographically strong, but neither are the functions it replaces. Fabien Coelho, reviewed by Dean Rasheed, Aleksander Alekseev, and myself Discussion: https://postgr.es/m/alpine.DEB.2.22.394.2105241211230.165418@pseudo |
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chklocale.c | ||
dirent.c | ||
dirmod.c | ||
dlopen.c | ||
explicit_bzero.c | ||
fls.c | ||
getaddrinfo.c | ||
getopt_long.c | ||
getopt.c | ||
getpeereid.c | ||
getrusage.c | ||
gettimeofday.c | ||
inet_aton.c | ||
inet_net_ntop.c | ||
kill.c | ||
link.c | ||
Makefile | ||
mkdtemp.c | ||
noblock.c | ||
open.c | ||
path.c | ||
pg_bitutils.c | ||
pg_crc32c_armv8_choose.c | ||
pg_crc32c_armv8.c | ||
pg_crc32c_sb8.c | ||
pg_crc32c_sse42_choose.c | ||
pg_crc32c_sse42.c | ||
pg_strong_random.c | ||
pgcheckdir.c | ||
pgmkdirp.c | ||
pgsleep.c | ||
pgstrcasecmp.c | ||
pgstrsignal.c | ||
pqsignal.c | ||
pread.c | ||
preadv.c | ||
pthread_barrier_wait.c | ||
pthread-win32.h | ||
pwrite.c | ||
pwritev.c | ||
qsort_arg.c | ||
qsort.c | ||
quotes.c | ||
README | ||
setenv.c | ||
snprintf.c | ||
strerror.c | ||
strlcat.c | ||
strlcpy.c | ||
strnlen.c | ||
strtof.c | ||
system.c | ||
tar.c | ||
thread.c | ||
unsetenv.c | ||
win32.ico | ||
win32env.c | ||
win32error.c | ||
win32security.c | ||
win32setlocale.c | ||
win32stat.c | ||
win32ver.rc |
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, AIX, and macOS use an export list to control the symbols exported by libpq.