mirror of
https://github.com/postgres/postgres.git
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Add thread.c for libpq threading, and hook it into libpq/configure.
This commit is contained in:
Bruce Momjian
parent
02d847fe9f
commit
62b532b736
111
configure
vendored
111
configure
vendored
@ -2824,7 +2824,11 @@ if test "${with_threads+set}" = set; then
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case $withval in
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yes)
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:
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cat >>confdefs.h <<\_ACEOF
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#define USE_THREADS 1
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_ACEOF
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;;
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no)
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:
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@ -2841,6 +2845,7 @@ else
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fi;
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echo "$as_me:$LINENO: result: $with_threads" >&5
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echo "${ECHO_T}$with_threads" >&6
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@ -3899,9 +3904,12 @@ case $host_os in
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# these require no special flags or libraries
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;;
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freebsd2*|freebsd3*|freebsd4*) THREAD_CFLAGS="-pthread" ;;
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freebsd*) THREAD_LIBS="-lc_r" ;;
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linux*) THREAD_LIBS="-lpthread"
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THREAD_CFLAGS="-D_REENTRANT" ;;
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freebsd*)
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THREAD_LIBS="-lc_r"
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;;
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linux*) THREAD_CFLAGS="-D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
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THREAD_LIBS="-lpthread"
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;;
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*)
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# other operating systems might fail because they have pthread.h but need
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# special libs we don't know about yet.
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@ -3918,7 +3926,7 @@ so it can be added to the next release. Report any compile or link flags,
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or libraries required for threading support.
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" >&2;}
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{ (exit 1); exit 1; }; }
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esac
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esac
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fi
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@ -12818,6 +12826,97 @@ _ACEOF
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fi
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#
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# Check for re-entrant versions of certain functions
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#
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# Include special flags if required
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#
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_CFLAGS="$CFLAGS"
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_LIB="$LIBS"
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CFLAGS="$CFLAGS $TREAD_CFLAGS"
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LIBS="$LIBS $THREAD_LIBS"
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for ac_func in strerror_r getpwuid_r gethostbyname_r
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do
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as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
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echo "$as_me:$LINENO: checking for $ac_func" >&5
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echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
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if eval "test \"\${$as_ac_var+set}\" = set"; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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cat >conftest.$ac_ext <<_ACEOF
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#line $LINENO "configure"
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#include "confdefs.h"
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/* System header to define __stub macros and hopefully few prototypes,
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which can conflict with char $ac_func (); below. */
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#include <assert.h>
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/* Override any gcc2 internal prototype to avoid an error. */
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#ifdef __cplusplus
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extern "C"
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#endif
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/* We use char because int might match the return type of a gcc2
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builtin and then its argument prototype would still apply. */
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char $ac_func ();
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char (*f) ();
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#ifdef F77_DUMMY_MAIN
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# ifdef __cplusplus
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extern "C"
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# endif
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int F77_DUMMY_MAIN() { return 1; }
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#endif
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int
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main ()
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{
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/* The GNU C library defines this for functions which it implements
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to always fail with ENOSYS. Some functions are actually named
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something starting with __ and the normal name is an alias. */
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#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
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choke me
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#else
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f = $ac_func;
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#endif
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext conftest$ac_exeext
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if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
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(eval $ac_link) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -s conftest$ac_exeext'
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{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
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(eval $ac_try) 2>&5
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ac_status=$?
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); }; }; then
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eval "$as_ac_var=yes"
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else
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echo "$as_me: failed program was:" >&5
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cat conftest.$ac_ext >&5
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eval "$as_ac_var=no"
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fi
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rm -f conftest.$ac_objext conftest$ac_exeext conftest.$ac_ext
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fi
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echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
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echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
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if test `eval echo '${'$as_ac_var'}'` = yes; then
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cat >>confdefs.h <<_ACEOF
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#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
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_ACEOF
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fi
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done
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CFLAGS="$_CFLAGS"
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LIB="$_LIBS"
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# This test makes sure that run tests work at all. Sometimes a shared
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# library is found by the linker, but the runtime linker can't find it.
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@ -17603,8 +17702,8 @@ s,@with_pam@,$with_pam,;t t
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s,@with_rendezvous@,$with_rendezvous,;t t
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s,@with_openssl@,$with_openssl,;t t
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s,@ELF_SYS@,$ELF_SYS,;t t
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s,@THREAD_LIBS@,$THREAD_LIBS,;t t
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s,@THREAD_CFLAGS@,$THREAD_CFLAGS,;t t
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s,@THREAD_LIBS@,$THREAD_LIBS,;t t
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s,@AWK@,$AWK,;t t
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s,@FLEX@,$FLEX,;t t
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s,@FLEXFLAGS@,$FLEXFLAGS,;t t
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33
configure.in
33
configure.in
@ -1,5 +1,5 @@
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dnl Process this file with autoconf to produce a configure script.
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dnl $Header: /cvsroot/pgsql/configure.in,v 1.261 2003/06/13 23:10:07 momjian Exp $
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dnl $Header: /cvsroot/pgsql/configure.in,v 1.262 2003/06/14 14:35:42 momjian Exp $
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dnl
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dnl Developers, please strive to achieve this order:
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dnl
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@ -323,7 +323,9 @@ IFS=$ac_save_IFS
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# Enable libpq to be thread-safe
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#
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AC_MSG_CHECKING([allow threaded libpq])
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PGAC_ARG_BOOL(with, threads, no, [ --with-threads allow libpq to be thread-safe])
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PGAC_ARG_BOOL(with, threads, no, [ --with-threads allow libpq to be thread-safe],
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[AC_DEFINE([USE_THREADS], 1, [Define to 1 to build libpq with threads. (--with-threads)])])
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AC_MSG_RESULT([$with_threads])
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AC_SUBST(with_threads)
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@ -559,9 +561,12 @@ case $host_os in
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# these require no special flags or libraries
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;;
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freebsd2*|freebsd3*|freebsd4*) THREAD_CFLAGS="-pthread" ;;
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freebsd*) THREAD_LIBS="-lc_r" ;;
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linux*) THREAD_LIBS="-lpthread"
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THREAD_CFLAGS="-D_REENTRANT" ;;
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freebsd*)
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THREAD_LIBS="-lc_r"
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;;
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linux*) THREAD_CFLAGS="-D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
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THREAD_LIBS="-lpthread"
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;;
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*)
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# other operating systems might fail because they have pthread.h but need
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# special libs we don't know about yet.
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@ -571,10 +576,10 @@ Please report your platform threading info to the PostgreSQL mailing lists
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so it can be added to the next release. Report any compile or link flags,
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or libraries required for threading support.
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])
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esac
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esac
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fi
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AC_SUBST(THREAD_LIBS)
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AC_SUBST(THREAD_CFLAGS)
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AC_SUBST(THREAD_LIBS)
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#
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# Assignments
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@ -983,6 +988,20 @@ AC_CHECK_FUNCS(atexit, [],
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AC_FUNC_FSEEKO
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#
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# Check for re-entrant versions of certain functions
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#
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# Include special flags if required
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#
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_CFLAGS="$CFLAGS"
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_LIB="$LIBS"
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CFLAGS="$CFLAGS $TREAD_CFLAGS"
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LIBS="$LIBS $THREAD_LIBS"
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AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
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CFLAGS="$_CFLAGS"
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LIB="$_LIBS"
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# This test makes sure that run tests work at all. Sometimes a shared
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# library is found by the linker, but the runtime linker can't find it.
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@ -1,5 +1,5 @@
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# -*-makefile-*-
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# $Header: /cvsroot/pgsql/src/Makefile.global.in,v 1.163 2003/05/27 16:36:50 momjian Exp $
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# $Header: /cvsroot/pgsql/src/Makefile.global.in,v 1.164 2003/06/14 14:35:42 momjian Exp $
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#------------------------------------------------------------------------------
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# All PostgreSQL makefiles include this file and use the variables it sets,
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@ -121,6 +121,7 @@ localedir := @localedir@
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#
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# Records the choice of the various --enable-xxx and --with-xxx options.
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with_threads = @with_threads@
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with_java = @with_java@
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with_perl = @with_perl@
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with_python = @with_python@
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@ -340,7 +341,7 @@ endif
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#
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# substitute implementations of the C library
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LIBOBJS = @LIBOBJS@ path.o
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LIBOBJS = @LIBOBJS@ path.o threads.o
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ifneq (,$(LIBOBJS))
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LIBS += -lpgport
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@ -121,6 +121,9 @@
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/* Define to 1 if you have the `getaddrinfo' function. */
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#undef HAVE_GETADDRINFO
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/* Define to 1 if you have the `gethostbyname_r' function. */
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#undef HAVE_GETHOSTBYNAME_R
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/* Define to 1 if you have the `gethostname' function. */
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#undef HAVE_GETHOSTNAME
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@ -136,6 +139,9 @@
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/* Define to 1 if you have the `getpeereid' function. */
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#undef HAVE_GETPEEREID
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/* Define to 1 if you have the `getpwuid_r' function. */
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#undef HAVE_GETPWUID_R
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/* Define to 1 if you have the `getrusage' function. */
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#undef HAVE_GETRUSAGE
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@ -375,6 +381,9 @@
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/* Define to 1 if you have the `strerror' function. */
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#undef HAVE_STRERROR
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/* Define to 1 if you have the `strerror_r' function. */
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#undef HAVE_STRERROR_R
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/* Define to 1 if cpp supports the ANSI # stringizing operator. */
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#undef HAVE_STRINGIZE
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@ -579,6 +588,9 @@
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/* Define to select SysV-style shared memory. */
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#undef USE_SYSV_SHARED_MEMORY
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/* Define to 1 to build libpq with threads. (--with-threads) */
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#undef USE_THREADS
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/* Define to select unnamed POSIX semaphores. */
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#undef USE_UNNAMED_POSIX_SEMAPHORES
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@ -6,11 +6,15 @@
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* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $Id: port.h,v 1.6 2003/06/12 08:15:29 momjian Exp $
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* $Id: port.h,v 1.7 2003/06/14 14:35:42 momjian Exp $
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*
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*-------------------------------------------------------------------------
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*/
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/* for thread.c */
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#include <pwd.h>
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#include <netdb.h>
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/* Portable path handling for Unix/Win32 */
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bool is_absolute_path(const char *filename);
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char *first_path_separator(const char *filename);
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@ -98,3 +102,15 @@ extern long random(void);
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#ifndef HAVE_SRANDOM
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extern void srandom(unsigned int seed);
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#endif
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/* thread.h */
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extern char *pqStrerror(int errnum, char *strerrbuf, size_t buflen);
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extern int pqGetpwuid(uid_t uid, struct passwd *resultbuf, char *buffer,
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size_t buflen, struct passwd **result);
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extern int pqGethostbyname(const char *name,
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struct hostent *resbuf,
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char *buf, size_t buflen,
|
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struct hostent **result,
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int *herrno);
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@ -4,7 +4,7 @@
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#
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# Copyright (c) 1994, Regents of the University of California
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#
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# $Header: /cvsroot/pgsql/src/interfaces/libpq/Makefile,v 1.81 2003/06/12 17:31:50 momjian Exp $
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# $Header: /cvsroot/pgsql/src/interfaces/libpq/Makefile,v 1.82 2003/06/14 14:35:42 momjian Exp $
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#
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#-------------------------------------------------------------------------
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@ -23,7 +23,7 @@ override CPPFLAGS := -I$(srcdir) $(CPPFLAGS) $(THREAD_CFLAGS) -DFRONTEND -DSYSCO
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OBJS= fe-auth.o fe-connect.o fe-exec.o fe-misc.o fe-print.o fe-lobj.o \
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fe-protocol2.o fe-protocol3.o pqexpbuffer.o pqsignal.o fe-secure.o \
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dllist.o md5.o ip.o wchar.o encnames.o \
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$(filter crypt.o getaddrinfo.o inet_aton.o snprintf.o strerror.o path.o, $(LIBOBJS))
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$(filter crypt.o getaddrinfo.o inet_aton.o snprintf.o strerror.o path.o threads.o, $(LIBOBJS))
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# Add libraries that libpq depends (or might depend) on into the
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@ -46,9 +46,13 @@ backend_src = $(top_srcdir)/src/backend
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# For port modules, this only happens if configure decides the module
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# is needed (see filter hack in OBJS, above).
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|
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crypt.c getaddrinfo.c inet_aton.c snprintf.c strerror.c path.c: %.c : $(top_srcdir)/src/port/%.c
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crypt.c getaddrinfo.c inet_aton.c snprintf.c strerror.c path.c threads.c: %.c : $(top_srcdir)/src/port/%.c
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rm -f $@ && $(LN_S) $< .
|
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# compile this with thread flags
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thread.o: thread.c
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$(CC) $(CFLAGS) $(THREAD_CFLAGS) -c thread.c
|
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dllist.c: $(backend_src)/lib/dllist.c
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rm -f $@ && $(LN_S) $< .
|
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|
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@ -7,7 +7,7 @@
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# with broken/missing library files.
|
||||
|
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# IDENTIFICATION
|
||||
# $Header: /cvsroot/pgsql/src/port/Makefile,v 1.3 2002/07/27 20:10:05 petere Exp $
|
||||
# $Header: /cvsroot/pgsql/src/port/Makefile,v 1.4 2003/06/14 14:35:42 momjian Exp $
|
||||
#
|
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#-------------------------------------------------------------------------
|
||||
|
||||
@ -22,5 +22,8 @@ endif
|
||||
libpgport.a: $(LIBOBJS)
|
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$(AR) crs $@ $^
|
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|
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thread.o: thread.c
|
||||
$(CC) $(CFLAGS) $(THREAD_CFLAGS) -c thread.c
|
||||
|
||||
clean distclean maintainer-clean:
|
||||
rm -f libpgport.a $(LIBOBJS)
|
||||
|
||||
85
src/port/threads.c
Normal file
85
src/port/threads.c
Normal file
@ -0,0 +1,85 @@
|
||||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* threads.c
|
||||
*
|
||||
* Prototypes and macros around system calls, used to help make
|
||||
* threaded libraries reentrant and safe to use from threaded applications.
|
||||
*
|
||||
* Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
|
||||
*
|
||||
* $Id: threads.c,v 1.1 2003/06/14 14:35:42 momjian Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
#include "postgres.h"
|
||||
|
||||
/*
|
||||
* Wrapper around strerror and strerror_r to use the former if it is
|
||||
* available and also return a more useful value (the error string).
|
||||
*/
|
||||
char *
|
||||
pqStrerror(int errnum, char *strerrbuf, size_t buflen)
|
||||
{
|
||||
#if defined(USE_THREADS) && defined(HAVE_STRERROR_R)
|
||||
/* reentrant strerror_r is available */
|
||||
/* some early standards had strerror_r returning char * */
|
||||
strerror_r(errnum, strerrbuf, buflen);
|
||||
return (strerrbuf);
|
||||
#else
|
||||
/* no strerror_r() available, just use strerror */
|
||||
return strerror(errnum);
|
||||
#endif
|
||||
}
|
||||
|
||||
/*
|
||||
* Wrapper around getpwuid() or getpwuid_r() to mimic POSIX getpwuid_r()
|
||||
* behaviour, if it is not available.
|
||||
*/
|
||||
int
|
||||
pqGetpwuid(uid_t uid, struct passwd * resultbuf, char *buffer,
|
||||
size_t buflen, struct passwd ** result)
|
||||
{
|
||||
#if defined(USE_THREADS) && defined(HAVE_GETPWUID_R)
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||||
/*
|
||||
* broken (well early POSIX draft) getpwuid_r() which returns 'struct
|
||||
* passwd *'
|
||||
*/
|
||||
*result = getpwuid_r(uid, resultbuf, buffer, buflen);
|
||||
#else
|
||||
/* no getpwuid_r() available, just use getpwuid() */
|
||||
*result = getpwuid(uid);
|
||||
#endif
|
||||
return (*result == NULL) ? -1 : 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Wrapper around gethostbyname() or gethostbyname_r() to mimic
|
||||
* POSIX gethostbyname_r() behaviour, if it is not available.
|
||||
*/
|
||||
int
|
||||
pqGethostbyname(const char *name,
|
||||
struct hostent * resbuf,
|
||||
char *buf, size_t buflen,
|
||||
struct hostent ** result,
|
||||
int *herrno)
|
||||
{
|
||||
#if defined(USE_THREADS) && defined(HAVE_GETHOSTBYNAME_R)
|
||||
/*
|
||||
* broken (well early POSIX draft) gethostbyname_r() which returns
|
||||
* 'struct hostent *'
|
||||
*/
|
||||
*result = gethostbyname_r(name, resbuf, buf, buflen, herrno);
|
||||
return (*result == NULL) ? -1 : 0;
|
||||
#else
|
||||
/* no gethostbyname_r(), just use gethostbyname() */
|
||||
*result = gethostbyname(name);
|
||||
if (*result != NULL)
|
||||
return 0;
|
||||
else
|
||||
{
|
||||
*herrno = h_errno;
|
||||
return -1;
|
||||
}
|
||||
#endif
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user