mirror of
https://github.com/postgres/postgres.git
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Convert the arithmetic for shared memory size calculation from 'int'
to 'Size' (that is, size_t), and install overflow detection checks in it. This allows us to remove the former arbitrary restrictions on NBuffers etc. It won't make any difference in a 32-bit machine, but in a 64-bit machine you could theoretically have terabytes of shared buffers. (How efficiently we could manage 'em remains to be seen.) Similarly, num_temp_buffers, work_mem, and maintenance_work_mem can be set above 2Gb on a 64-bit machine. Original patch from Koichi Suzuki, additional work by moi.
This commit is contained in:
Tom Lane
416
configure
vendored
416
configure
vendored
@ -18063,6 +18063,422 @@ _ACEOF
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# And one for the size of size_t (enables tweaks for > 32bit address space)
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echo "$as_me:$LINENO: checking for size_t" >&5
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echo $ECHO_N "checking for size_t... $ECHO_C" >&6
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if test "${ac_cv_type_size_t+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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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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$ac_includes_default
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int
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main ()
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{
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if ((size_t *) 0)
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return 0;
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if (sizeof (size_t))
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return 0;
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag"
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|| test ! -s conftest.err'
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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 $ac_status); }; } &&
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{ ac_try='test -s conftest.$ac_objext'
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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 $ac_status); }; }; then
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ac_cv_type_size_t=yes
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_cv_type_size_t=no
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fi
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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echo "$as_me:$LINENO: result: $ac_cv_type_size_t" >&5
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echo "${ECHO_T}$ac_cv_type_size_t" >&6
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echo "$as_me:$LINENO: checking size of size_t" >&5
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echo $ECHO_N "checking size of size_t... $ECHO_C" >&6
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if test "${ac_cv_sizeof_size_t+set}" = set; then
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echo $ECHO_N "(cached) $ECHO_C" >&6
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else
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if test "$ac_cv_type_size_t" = yes; then
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# The cast to unsigned long works around a bug in the HP C Compiler
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# version HP92453-01 B.11.11.23709.GP, which incorrectly rejects
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# declarations like `int a3[[(sizeof (unsigned char)) >= 0]];'.
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# This bug is HP SR number 8606223364.
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if test "$cross_compiling" = yes; then
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# Depending upon the size, compute the lo and hi bounds.
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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$ac_includes_default
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int
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main ()
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{
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static int test_array [1 - 2 * !(((long) (sizeof (size_t))) >= 0)];
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test_array [0] = 0
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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{ ac_try='test -z "$ac_c_werror_flag"
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|| test ! -s conftest.err'
|
||||
{ (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 $ac_status); }; } &&
|
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{ ac_try='test -s conftest.$ac_objext'
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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 $ac_status); }; }; then
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ac_lo=0 ac_mid=0
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while :; do
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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||||
/* end confdefs.h. */
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||||
$ac_includes_default
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||||
int
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||||
main ()
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{
|
||||
static int test_array [1 - 2 * !(((long) (sizeof (size_t))) <= $ac_mid)];
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test_array [0] = 0
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||||
|
||||
;
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return 0;
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||||
}
|
||||
_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>conftest.er1
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||||
ac_status=$?
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||||
grep -v '^ *+' conftest.er1 >conftest.err
|
||||
rm -f conftest.er1
|
||||
cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); } &&
|
||||
{ ac_try='test -z "$ac_c_werror_flag"
|
||||
|| test ! -s conftest.err'
|
||||
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
|
||||
(eval $ac_try) 2>&5
|
||||
ac_status=$?
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); }; } &&
|
||||
{ ac_try='test -s conftest.$ac_objext'
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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 $ac_status); }; }; then
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ac_hi=$ac_mid; break
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||||
else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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||||
ac_lo=`expr $ac_mid + 1`
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||||
if test $ac_lo -le $ac_mid; then
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ac_lo= ac_hi=
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break
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fi
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ac_mid=`expr 2 '*' $ac_mid + 1`
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fi
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
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done
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else
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echo "$as_me: failed program was:" >&5
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||||
sed 's/^/| /' conftest.$ac_ext >&5
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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||||
_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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||||
/* end confdefs.h. */
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||||
$ac_includes_default
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||||
int
|
||||
main ()
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||||
{
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||||
static int test_array [1 - 2 * !(((long) (sizeof (size_t))) < 0)];
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test_array [0] = 0
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|
||||
;
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return 0;
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||||
}
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||||
_ACEOF
|
||||
rm -f conftest.$ac_objext
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||||
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
|
||||
(eval $ac_compile) 2>conftest.er1
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||||
ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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||||
{ ac_try='test -z "$ac_c_werror_flag"
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||||
|| test ! -s conftest.err'
|
||||
{ (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 $ac_status); }; } &&
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{ ac_try='test -s conftest.$ac_objext'
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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 $ac_status); }; }; then
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ac_hi=-1 ac_mid=-1
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while :; do
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cat >conftest.$ac_ext <<_ACEOF
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/* confdefs.h. */
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_ACEOF
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cat confdefs.h >>conftest.$ac_ext
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cat >>conftest.$ac_ext <<_ACEOF
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/* end confdefs.h. */
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||||
$ac_includes_default
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||||
int
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||||
main ()
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{
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static int test_array [1 - 2 * !(((long) (sizeof (size_t))) >= $ac_mid)];
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test_array [0] = 0
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;
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return 0;
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}
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_ACEOF
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rm -f conftest.$ac_objext
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if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
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(eval $ac_compile) 2>conftest.er1
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ac_status=$?
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grep -v '^ *+' conftest.er1 >conftest.err
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rm -f conftest.er1
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cat conftest.err >&5
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echo "$as_me:$LINENO: \$? = $ac_status" >&5
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(exit $ac_status); } &&
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||||
{ ac_try='test -z "$ac_c_werror_flag"
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|| test ! -s conftest.err'
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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
|
||||
(exit $ac_status); }; } &&
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||||
{ ac_try='test -s conftest.$ac_objext'
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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 $ac_status); }; }; then
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ac_lo=$ac_mid; break
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else
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echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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ac_hi=`expr '(' $ac_mid ')' - 1`
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||||
if test $ac_mid -le $ac_hi; then
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||||
ac_lo= ac_hi=
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break
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fi
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ac_mid=`expr 2 '*' $ac_mid`
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||||
fi
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
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||||
done
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||||
else
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||||
echo "$as_me: failed program was:" >&5
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sed 's/^/| /' conftest.$ac_ext >&5
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|
||||
ac_lo= ac_hi=
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||||
fi
|
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
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fi
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rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
|
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# Binary search between lo and hi bounds.
|
||||
while test "x$ac_lo" != "x$ac_hi"; do
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ac_mid=`expr '(' $ac_hi - $ac_lo ')' / 2 + $ac_lo`
|
||||
cat >conftest.$ac_ext <<_ACEOF
|
||||
/* confdefs.h. */
|
||||
_ACEOF
|
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cat confdefs.h >>conftest.$ac_ext
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||||
cat >>conftest.$ac_ext <<_ACEOF
|
||||
/* end confdefs.h. */
|
||||
$ac_includes_default
|
||||
int
|
||||
main ()
|
||||
{
|
||||
static int test_array [1 - 2 * !(((long) (sizeof (size_t))) <= $ac_mid)];
|
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test_array [0] = 0
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|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
rm -f conftest.$ac_objext
|
||||
if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
|
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(eval $ac_compile) 2>conftest.er1
|
||||
ac_status=$?
|
||||
grep -v '^ *+' conftest.er1 >conftest.err
|
||||
rm -f conftest.er1
|
||||
cat conftest.err >&5
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); } &&
|
||||
{ ac_try='test -z "$ac_c_werror_flag"
|
||||
|| test ! -s conftest.err'
|
||||
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
|
||||
(eval $ac_try) 2>&5
|
||||
ac_status=$?
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); }; } &&
|
||||
{ ac_try='test -s conftest.$ac_objext'
|
||||
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
|
||||
(eval $ac_try) 2>&5
|
||||
ac_status=$?
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); }; }; then
|
||||
ac_hi=$ac_mid
|
||||
else
|
||||
echo "$as_me: failed program was:" >&5
|
||||
sed 's/^/| /' conftest.$ac_ext >&5
|
||||
|
||||
ac_lo=`expr '(' $ac_mid ')' + 1`
|
||||
fi
|
||||
rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
|
||||
done
|
||||
case $ac_lo in
|
||||
?*) ac_cv_sizeof_size_t=$ac_lo;;
|
||||
'') { { echo "$as_me:$LINENO: error: cannot compute sizeof (size_t), 77
|
||||
See \`config.log' for more details." >&5
|
||||
echo "$as_me: error: cannot compute sizeof (size_t), 77
|
||||
See \`config.log' for more details." >&2;}
|
||||
{ (exit 1); exit 1; }; } ;;
|
||||
esac
|
||||
else
|
||||
if test "$cross_compiling" = yes; then
|
||||
{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
|
||||
See \`config.log' for more details." >&5
|
||||
echo "$as_me: error: cannot run test program while cross compiling
|
||||
See \`config.log' for more details." >&2;}
|
||||
{ (exit 1); exit 1; }; }
|
||||
else
|
||||
cat >conftest.$ac_ext <<_ACEOF
|
||||
/* confdefs.h. */
|
||||
_ACEOF
|
||||
cat confdefs.h >>conftest.$ac_ext
|
||||
cat >>conftest.$ac_ext <<_ACEOF
|
||||
/* end confdefs.h. */
|
||||
$ac_includes_default
|
||||
long longval () { return (long) (sizeof (size_t)); }
|
||||
unsigned long ulongval () { return (long) (sizeof (size_t)); }
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
int
|
||||
main ()
|
||||
{
|
||||
|
||||
FILE *f = fopen ("conftest.val", "w");
|
||||
if (! f)
|
||||
exit (1);
|
||||
if (((long) (sizeof (size_t))) < 0)
|
||||
{
|
||||
long i = longval ();
|
||||
if (i != ((long) (sizeof (size_t))))
|
||||
exit (1);
|
||||
fprintf (f, "%ld\n", i);
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned long i = ulongval ();
|
||||
if (i != ((long) (sizeof (size_t))))
|
||||
exit (1);
|
||||
fprintf (f, "%lu\n", i);
|
||||
}
|
||||
exit (ferror (f) || fclose (f) != 0);
|
||||
|
||||
;
|
||||
return 0;
|
||||
}
|
||||
_ACEOF
|
||||
rm -f conftest$ac_exeext
|
||||
if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
|
||||
(eval $ac_link) 2>&5
|
||||
ac_status=$?
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); } && { ac_try='./conftest$ac_exeext'
|
||||
{ (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
|
||||
(eval $ac_try) 2>&5
|
||||
ac_status=$?
|
||||
echo "$as_me:$LINENO: \$? = $ac_status" >&5
|
||||
(exit $ac_status); }; }; then
|
||||
ac_cv_sizeof_size_t=`cat conftest.val`
|
||||
else
|
||||
echo "$as_me: program exited with status $ac_status" >&5
|
||||
echo "$as_me: failed program was:" >&5
|
||||
sed 's/^/| /' conftest.$ac_ext >&5
|
||||
|
||||
( exit $ac_status )
|
||||
{ { echo "$as_me:$LINENO: error: cannot compute sizeof (size_t), 77
|
||||
See \`config.log' for more details." >&5
|
||||
echo "$as_me: error: cannot compute sizeof (size_t), 77
|
||||
See \`config.log' for more details." >&2;}
|
||||
{ (exit 1); exit 1; }; }
|
||||
fi
|
||||
rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
|
||||
fi
|
||||
fi
|
||||
rm -f conftest.val
|
||||
else
|
||||
ac_cv_sizeof_size_t=0
|
||||
fi
|
||||
fi
|
||||
echo "$as_me:$LINENO: result: $ac_cv_sizeof_size_t" >&5
|
||||
echo "${ECHO_T}$ac_cv_sizeof_size_t" >&6
|
||||
cat >>confdefs.h <<_ACEOF
|
||||
#define SIZEOF_SIZE_T $ac_cv_sizeof_size_t
|
||||
_ACEOF
|
||||
|
||||
|
||||
|
||||
# Determine memory alignment requirements for the basic C data types.
|
||||
|
||||
echo "$as_me:$LINENO: checking for short" >&5
|
||||
|
||||
Reference in New Issue
Block a user