Mercurial > hg > nginx-quic
view auto/lib/libatomic/conf @ 6818:2b2239a1e0d4
Mp4: fixed setting wrong mdat atom size in very rare cases.
Atom size is the sum of atom header size and atom data size. The
specification says that the first 4 bytes are set to one when
the atom size is greater than the maximum unsigned 32-bit value.
Which means atom header size should be considered when the
comparison takes place between atom data size and 0xffffffff.
author | hucongcong <hucong.c@foxmail.com> |
---|---|
date | Tue, 22 Nov 2016 13:40:08 +0800 |
parents | d620f497c50f |
children |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. if [ $NGX_LIBATOMIC != YES ]; then have=NGX_HAVE_LIBATOMIC . auto/have CORE_INCS="$CORE_INCS $NGX_LIBATOMIC/src" LINK_DEPS="$LINK_DEPS $NGX_LIBATOMIC/src/libatomic_ops.a" CORE_LIBS="$CORE_LIBS $NGX_LIBATOMIC/src/libatomic_ops.a" else ngx_feature="atomic_ops library" ngx_feature_name=NGX_HAVE_LIBATOMIC ngx_feature_run=yes ngx_feature_incs="#define AO_REQUIRE_CAS #include <atomic_ops.h>" ngx_feature_path= ngx_feature_libs="-latomic_ops" ngx_feature_test="long n = 0; if (!AO_compare_and_swap(&n, 0, 1)) return 1; if (AO_fetch_and_add(&n, 1) != 1) return 1; if (n != 2) return 1; AO_nop();" . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS $ngx_feature_libs" else cat << END $0: error: libatomic_ops library was not found. END exit 1 fi fi