Mercurial > hg > nginx-quic
view auto/types/uintptr_t @ 6517:657e029bac28
Thread pools: memory barriers in task completion notifications.
The ngx_thread_pool_done object isn't volatile, and at least some
compilers assume that it is permitted to reorder modifications of
volatile and non-volatile objects. Added appropriate ngx_memory_barrier()
calls to make sure all modifications will happen before the lock is released.
Reported by Mindaugas Rasiukevicius,
http://mailman.nginx.org/pipermail/nginx-devel/2016-April/008160.html.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 19 Apr 2016 17:18:28 +0300 |
parents | 7ec809b579d7 |
children | e3faa5fb7772 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. echo $ngx_n "checking for uintptr_t ...$ngx_c" cat << END >> $NGX_AUTOCONF_ERR ---------------------------------------- checking for uintptr_t END found=no cat << END > $NGX_AUTOTEST.c #include <sys/types.h> $NGX_INTTYPES_H int main() { uintptr_t i = 0; return (int) i; } END ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \ -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT" eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1" if [ -x $NGX_AUTOTEST ]; then echo " uintptr_t found" found=yes else echo $ngx_n " uintptr_t not found" $ngx_c fi rm -rf $NGX_AUTOTEST* if [ $found = no ]; then found="uint`expr 8 \* $ngx_ptr_size`_t" echo ", $found used" echo "typedef $found uintptr_t;" >> $NGX_AUTO_CONFIG_H echo "typedef $found intptr_t;" | sed -e 's/u//g' >> $NGX_AUTO_CONFIG_H fi