Mercurial > hg > nginx
annotate auto/lib/libatomic/conf @ 8085:043006e5a0b1
SSL: optimized rotation of session ticket keys.
Instead of syncing keys with shared memory on each ticket operation,
the code now does this only when the worker is going to change expiration
of the current key, or going to switch to a new key: that is, usually
at most once per second.
To do so without races, the code maintains 3 keys: current, previous,
and next. If a worker will switch to the next key earlier, other workers
will still be able to decrypt new tickets, since they will be encrypted
with the next key.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Wed, 12 Oct 2022 20:14:55 +0300 |
parents | d620f497c50f |
children |
rev | line source |
---|---|
3363 | 1 |
2 # Copyright (C) Igor Sysoev | |
4412 | 3 # Copyright (C) Nginx, Inc. |
3363 | 4 |
5 | |
6 if [ $NGX_LIBATOMIC != YES ]; then | |
7 | |
8 have=NGX_HAVE_LIBATOMIC . auto/have | |
9 CORE_INCS="$CORE_INCS $NGX_LIBATOMIC/src" | |
10 LINK_DEPS="$LINK_DEPS $NGX_LIBATOMIC/src/libatomic_ops.a" | |
11 CORE_LIBS="$CORE_LIBS $NGX_LIBATOMIC/src/libatomic_ops.a" | |
12 | |
13 else | |
14 | |
15 ngx_feature="atomic_ops library" | |
16 ngx_feature_name=NGX_HAVE_LIBATOMIC | |
3366 | 17 ngx_feature_run=yes |
3378
5d17022a1e88
fix libatomic usage on arm, cris, hppa, m68k, and sparc platforms
Igor Sysoev <igor@sysoev.ru>
parents:
3366
diff
changeset
|
18 ngx_feature_incs="#define AO_REQUIRE_CAS |
5d17022a1e88
fix libatomic usage on arm, cris, hppa, m68k, and sparc platforms
Igor Sysoev <igor@sysoev.ru>
parents:
3366
diff
changeset
|
19 #include <atomic_ops.h>" |
3363 | 20 ngx_feature_path= |
21 ngx_feature_libs="-latomic_ops" | |
3366 | 22 ngx_feature_test="long n = 0; |
23 if (!AO_compare_and_swap(&n, 0, 1)) | |
24 return 1; | |
25 if (AO_fetch_and_add(&n, 1) != 1) | |
26 return 1; | |
27 if (n != 2) | |
28 return 1; | |
3363 | 29 AO_nop();" |
30 . auto/feature | |
31 | |
32 if [ $ngx_found = yes ]; then | |
33 CORE_LIBS="$CORE_LIBS $ngx_feature_libs" | |
34 else | |
35 | |
36 cat << END | |
37 | |
38 $0: error: libatomic_ops library was not found. | |
39 | |
40 END | |
41 exit 1 | |
42 fi | |
43 fi |