Mercurial > hg > nginx-quic
view auto/unix @ 8398:82e174e47663
Changed keepalive_requests default to 1000 (ticket #2155).
It turns out no browsers implement HTTP/2 GOAWAY handling properly, and
large enough number of resources on a page results in failures to load
some resources. In particular, Chrome seems to experience errors if
loading of all resources requires more than 1 connection (while it
is usually able to retry requests at least once, even with 2 connections
there are occasional failures for some reason), Safari if loading requires
more than 3 connections, and Firefox if loading requires more than 10
connections (can be configured with network.http.request.max-attempts,
defaults to 10).
It does not seem to be possible to resolve this on nginx side, even strict
limiting of maximum concurrency does not help, and loading issues seems to
be triggered by merely queueing of a request for a particular connection.
The only available mitigation seems to use higher keepalive_requests value.
The new default is 1000 and matches previously used default for
http2_max_requests. It is expected to be enough for 99.98% of the pages
(https://httparchive.org/reports/state-of-the-web?start=latest#reqTotal)
even in Chrome.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 08 Apr 2021 00:16:30 +0300 |
parents | e2e9e0fae747 |
children | afebde21cb32 |
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# Copyright (C) Igor Sysoev # Copyright (C) Nginx, Inc. NGX_USER=${NGX_USER:-nobody} if [ -z "$NGX_GROUP" ]; then if [ $NGX_USER = nobody ]; then if grep nobody /etc/group 2>&1 >/dev/null; then echo "checking for nobody group ... found" NGX_GROUP=nobody else echo "checking for nobody group ... not found" if grep nogroup /etc/group 2>&1 >/dev/null; then echo "checking for nogroup group ... found" NGX_GROUP=nogroup else echo "checking for nogroup group ... not found" NGX_GROUP=nobody fi fi else NGX_GROUP=$NGX_USER fi fi ngx_feature="poll()" ngx_feature_name= ngx_feature_run=no ngx_feature_incs="#include <poll.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int n; struct pollfd pl; pl.fd = 0; pl.events = 0; pl.revents = 0; n = poll(&pl, 1, 0); if (n == -1) return 1" . auto/feature if [ $ngx_found = no ]; then EVENT_POLL=NONE fi ngx_feature="/dev/poll" ngx_feature_name="NGX_HAVE_DEVPOLL" ngx_feature_run=no ngx_feature_incs="#include <sys/devpoll.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int n, dp; struct dvpoll dvp; dp = 0; dvp.dp_fds = NULL; dvp.dp_nfds = 0; dvp.dp_timeout = 0; n = ioctl(dp, DP_POLL, &dvp); if (n == -1) return 1" . auto/feature if [ $ngx_found = yes ]; then CORE_SRCS="$CORE_SRCS $DEVPOLL_SRCS" EVENT_MODULES="$EVENT_MODULES $DEVPOLL_MODULE" EVENT_FOUND=YES fi if test -z "$NGX_KQUEUE_CHECKED"; then ngx_feature="kqueue" ngx_feature_name="NGX_HAVE_KQUEUE" ngx_feature_run=no ngx_feature_incs="#include <sys/event.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="(void) kqueue()" . auto/feature if [ $ngx_found = yes ]; then have=NGX_HAVE_CLEAR_EVENT . auto/have EVENT_MODULES="$EVENT_MODULES $KQUEUE_MODULE" CORE_SRCS="$CORE_SRCS $KQUEUE_SRCS" EVENT_FOUND=YES ngx_feature="kqueue's NOTE_LOWAT" ngx_feature_name="NGX_HAVE_LOWAT_EVENT" ngx_feature_run=no ngx_feature_incs="#include <sys/event.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct kevent kev; kev.fflags = NOTE_LOWAT; (void) kev" . auto/feature ngx_feature="kqueue's EVFILT_TIMER" ngx_feature_name="NGX_HAVE_TIMER_EVENT" ngx_feature_run=yes ngx_feature_incs="#include <sys/event.h> #include <sys/time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int kq; struct kevent kev; struct timespec ts; if ((kq = kqueue()) == -1) return 1; kev.ident = 0; kev.filter = EVFILT_TIMER; kev.flags = EV_ADD|EV_ENABLE; kev.fflags = 0; kev.data = 1000; kev.udata = 0; ts.tv_sec = 0; ts.tv_nsec = 0; if (kevent(kq, &kev, 1, &kev, 1, &ts) == -1) return 1; if (kev.flags & EV_ERROR) return 1;" . auto/feature fi fi if [ "$NGX_SYSTEM" = "NetBSD" ]; then # NetBSD 2.0 incompatibly defines kevent.udata as "intptr_t" cat << END >> $NGX_AUTO_CONFIG_H #define NGX_KQUEUE_UDATA_T END else cat << END >> $NGX_AUTO_CONFIG_H #define NGX_KQUEUE_UDATA_T (void *) END fi ngx_feature="crypt()" ngx_feature_name= ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test="crypt(\"test\", \"salt\");" . auto/feature if [ $ngx_found = no ]; then ngx_feature="crypt() in libcrypt" ngx_feature_name= ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs=-lcrypt . auto/feature if [ $ngx_found = yes ]; then CRYPT_LIB="-lcrypt" fi fi ngx_feature="F_READAHEAD" ngx_feature_name="NGX_HAVE_F_READAHEAD" ngx_feature_run=no ngx_feature_incs="#include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="fcntl(0, F_READAHEAD, 1);" . auto/feature ngx_feature="posix_fadvise()" ngx_feature_name="NGX_HAVE_POSIX_FADVISE" ngx_feature_run=no ngx_feature_incs="#include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="posix_fadvise(0, 0, 0, POSIX_FADV_SEQUENTIAL);" . auto/feature ngx_feature="O_DIRECT" ngx_feature_name="NGX_HAVE_O_DIRECT" ngx_feature_run=no ngx_feature_incs="#include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="fcntl(0, F_SETFL, O_DIRECT);" . auto/feature if [ $ngx_found = yes -a "$NGX_SYSTEM" = "Linux" ]; then have=NGX_HAVE_ALIGNED_DIRECTIO . auto/have fi ngx_feature="F_NOCACHE" ngx_feature_name="NGX_HAVE_F_NOCACHE" ngx_feature_run=no ngx_feature_incs="#include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="fcntl(0, F_NOCACHE, 1);" . auto/feature ngx_feature="directio()" ngx_feature_name="NGX_HAVE_DIRECTIO" ngx_feature_run=no ngx_feature_incs="#include <sys/types.h> #include <sys/fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="directio(0, DIRECTIO_ON);" . auto/feature ngx_feature="statfs()" ngx_feature_name="NGX_HAVE_STATFS" ngx_feature_run=no ngx_feature_incs="$NGX_INCLUDE_SYS_PARAM_H $NGX_INCLUDE_SYS_MOUNT_H $NGX_INCLUDE_SYS_VFS_H" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct statfs fs; statfs(\".\", &fs);" . auto/feature ngx_feature="statvfs()" ngx_feature_name="NGX_HAVE_STATVFS" ngx_feature_run=no ngx_feature_incs="#include <sys/types.h> #include <sys/statvfs.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct statvfs fs; statvfs(\".\", &fs);" . auto/feature ngx_feature="dlopen()" ngx_feature_name="NGX_HAVE_DLOPEN" ngx_feature_run=no ngx_feature_incs="#include <dlfcn.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="dlopen(NULL, RTLD_NOW | RTLD_GLOBAL); dlsym(NULL, \"\")" . auto/feature if [ $ngx_found = no ]; then ngx_feature="dlopen() in libdl" ngx_feature_libs="-ldl" . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS -ldl" NGX_LIBDL="-ldl" fi fi ngx_feature="sched_yield()" ngx_feature_name="NGX_HAVE_SCHED_YIELD" ngx_feature_run=no ngx_feature_incs="#include <sched.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="sched_yield()" . auto/feature if [ $ngx_found = no ]; then ngx_feature="sched_yield() in librt" ngx_feature_libs="-lrt" . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS -lrt" fi fi ngx_feature="sched_setaffinity()" ngx_feature_name="NGX_HAVE_SCHED_SETAFFINITY" ngx_feature_run=no ngx_feature_incs="#include <sched.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="cpu_set_t mask; CPU_ZERO(&mask); sched_setaffinity(0, sizeof(cpu_set_t), &mask)" . auto/feature ngx_feature="SO_SETFIB" ngx_feature_name="NGX_HAVE_SETFIB" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_SETFIB, NULL, 0)" . auto/feature ngx_feature="SO_REUSEPORT" ngx_feature_name="NGX_HAVE_REUSEPORT" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_REUSEPORT, NULL, 0)" . auto/feature ngx_feature="SO_ACCEPTFILTER" ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_ACCEPTFILTER, NULL, 0)" . auto/feature # OpenBSD bind to any address for transparent proxying ngx_feature="SO_BINDANY" ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, SOL_SOCKET, SO_BINDANY, NULL, 0)" . auto/feature # Linux transparent proxying ngx_feature="IP_TRANSPARENT" ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_TRANSPARENT, NULL, 0)" . auto/feature # FreeBSD bind to any address for transparent proxying ngx_feature="IP_BINDANY" ngx_feature_name="NGX_HAVE_TRANSPARENT_PROXY" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BINDANY, NULL, 0)" . auto/feature # Linux IP_BIND_ADDRESS_NO_PORT ngx_feature="IP_BIND_ADDRESS_NO_PORT" ngx_feature_name="NGX_HAVE_IP_BIND_ADDRESS_NO_PORT" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_BIND_ADDRESS_NO_PORT, NULL, 0)" . auto/feature # BSD way to get IPv4 datagram destination address ngx_feature="IP_RECVDSTADDR" ngx_feature_name="NGX_HAVE_IP_RECVDSTADDR" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_RECVDSTADDR, NULL, 0)" . auto/feature # BSD way to set IPv4 datagram source address ngx_feature="IP_SENDSRCADDR" ngx_feature_name="NGX_HAVE_IP_SENDSRCADDR" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IP, IP_SENDSRCADDR, NULL, 0)" . auto/feature # Linux way to get IPv4 datagram destination address ngx_feature="IP_PKTINFO" ngx_feature_name="NGX_HAVE_IP_PKTINFO" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct in_pktinfo pkt; pkt.ipi_spec_dst.s_addr = INADDR_ANY; (void) pkt; setsockopt(0, IPPROTO_IP, IP_PKTINFO, NULL, 0)" . auto/feature # RFC 3542 way to get IPv6 datagram destination address ngx_feature="IPV6_RECVPKTINFO" ngx_feature_name="NGX_HAVE_IPV6_RECVPKTINFO" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_IPV6, IPV6_RECVPKTINFO, NULL, 0)" . auto/feature ngx_feature="TCP_DEFER_ACCEPT" ngx_feature_name="NGX_HAVE_DEFERRED_ACCEPT" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_DEFER_ACCEPT, NULL, 0)" . auto/feature ngx_feature="TCP_KEEPIDLE" ngx_feature_name="NGX_HAVE_KEEPALIVE_TUNABLE" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_KEEPIDLE, NULL, 0); setsockopt(0, IPPROTO_TCP, TCP_KEEPINTVL, NULL, 0); setsockopt(0, IPPROTO_TCP, TCP_KEEPCNT, NULL, 0)" . auto/feature ngx_feature="TCP_FASTOPEN" ngx_feature_name="NGX_HAVE_TCP_FASTOPEN" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="setsockopt(0, IPPROTO_TCP, TCP_FASTOPEN, NULL, 0)" . auto/feature ngx_feature="TCP_INFO" ngx_feature_name="NGX_HAVE_TCP_INFO" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <netinet/tcp.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="socklen_t optlen = sizeof(struct tcp_info); struct tcp_info ti; ti.tcpi_rtt = 0; ti.tcpi_rttvar = 0; ti.tcpi_snd_cwnd = 0; ti.tcpi_rcv_space = 0; getsockopt(0, IPPROTO_TCP, TCP_INFO, &ti, &optlen)" . auto/feature ngx_feature="accept4()" ngx_feature_name="NGX_HAVE_ACCEPT4" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="accept4(0, NULL, NULL, SOCK_NONBLOCK)" . auto/feature if [ $NGX_FILE_AIO = YES ]; then ngx_feature="kqueue AIO support" ngx_feature_name="NGX_HAVE_FILE_AIO" ngx_feature_run=no ngx_feature_incs="#include <aio.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct aiocb iocb; iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; (void) aio_read(&iocb)" . auto/feature if [ $ngx_found = yes ]; then CORE_SRCS="$CORE_SRCS $FILE_AIO_SRCS" fi if [ $ngx_found = no ]; then ngx_feature="Linux AIO support" ngx_feature_name="NGX_HAVE_FILE_AIO" ngx_feature_run=no ngx_feature_incs="#include <linux/aio_abi.h> #include <sys/eventfd.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct iocb iocb; iocb.aio_lio_opcode = IOCB_CMD_PREAD; iocb.aio_flags = IOCB_FLAG_RESFD; iocb.aio_resfd = -1; (void) iocb; (void) eventfd(0, 0)" . auto/feature if [ $ngx_found = yes ]; then have=NGX_HAVE_EVENTFD . auto/have have=NGX_HAVE_SYS_EVENTFD_H . auto/have CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" fi fi if [ $ngx_found = no ]; then ngx_feature="Linux AIO support (SYS_eventfd)" ngx_feature_incs="#include <linux/aio_abi.h> #include <sys/syscall.h>" ngx_feature_test="struct iocb iocb; iocb.aio_lio_opcode = IOCB_CMD_PREAD; iocb.aio_flags = IOCB_FLAG_RESFD; iocb.aio_resfd = -1; (void) iocb; (void) SYS_eventfd" . auto/feature if [ $ngx_found = yes ]; then have=NGX_HAVE_EVENTFD . auto/have CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" fi fi if [ $ngx_found = no ]; then cat << END $0: no supported file AIO was found Currently file AIO is supported on FreeBSD 4.3+ and Linux 2.6.22+ only END exit 1 fi fi have=NGX_HAVE_UNIX_DOMAIN . auto/have ngx_feature_libs= # C types ngx_type="int"; . auto/types/sizeof ngx_type="long"; . auto/types/sizeof ngx_type="long long"; . auto/types/sizeof ngx_type="void *"; . auto/types/sizeof; ngx_ptr_size=$ngx_size ngx_param=NGX_PTR_SIZE; ngx_value=$ngx_size; . auto/types/value # POSIX types NGX_INCLUDE_AUTO_CONFIG_H="#include \"ngx_auto_config.h\"" ngx_type="uint32_t"; ngx_types="u_int32_t"; . auto/types/typedef ngx_type="uint64_t"; ngx_types="u_int64_t"; . auto/types/typedef ngx_type="sig_atomic_t"; ngx_types="int"; . auto/types/typedef . auto/types/sizeof ngx_param=NGX_SIG_ATOMIC_T_SIZE; ngx_value=$ngx_size; . auto/types/value ngx_type="socklen_t"; ngx_types="int"; . auto/types/typedef ngx_type="in_addr_t"; ngx_types="uint32_t u_int32_t"; . auto/types/typedef ngx_type="in_port_t"; ngx_types="u_short"; . auto/types/typedef ngx_type="rlim_t"; ngx_types="int"; . auto/types/typedef . auto/types/uintptr_t . auto/endianness ngx_type="size_t"; . auto/types/sizeof ngx_param=NGX_MAX_SIZE_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value ngx_param=NGX_SIZE_T_LEN; ngx_value=$ngx_max_len; . auto/types/value ngx_type="off_t"; . auto/types/sizeof ngx_param=NGX_MAX_OFF_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value ngx_param=NGX_OFF_T_LEN; ngx_value=$ngx_max_len; . auto/types/value ngx_type="time_t"; . auto/types/sizeof ngx_param=NGX_TIME_T_SIZE; ngx_value=$ngx_size; . auto/types/value ngx_param=NGX_TIME_T_LEN; ngx_value=$ngx_max_len; . auto/types/value ngx_param=NGX_MAX_TIME_T_VALUE; ngx_value=$ngx_max_value; . auto/types/value # syscalls, libc calls and some features ngx_feature="AF_INET6" ngx_feature_name="NGX_HAVE_INET6" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct sockaddr_in6 sin6; sin6.sin6_family = AF_INET6; (void) sin6" . auto/feature ngx_feature="setproctitle()" ngx_feature_name="NGX_HAVE_SETPROCTITLE" ngx_feature_run=no ngx_feature_incs="#include <stdlib.h>" ngx_feature_path= ngx_feature_libs=$NGX_SETPROCTITLE_LIB ngx_feature_test="setproctitle(\"test\");" . auto/feature ngx_feature="pread()" ngx_feature_name="NGX_HAVE_PREAD" ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test="char buf[1]; ssize_t n; n = pread(0, buf, 1, 0); if (n == -1) return 1" . auto/feature ngx_feature="pwrite()" ngx_feature_name="NGX_HAVE_PWRITE" ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test="char buf[1]; ssize_t n; n = pwrite(1, buf, 1, 0); if (n == -1) return 1" . auto/feature # pwritev() was introduced in FreeBSD 6 and Linux 2.6.30, glibc 2.10 ngx_feature="pwritev()" ngx_feature_name="NGX_HAVE_PWRITEV" ngx_feature_run=no ngx_feature_incs='#include <sys/uio.h>' ngx_feature_path= ngx_feature_libs= ngx_feature_test="char buf[1]; struct iovec vec[1]; ssize_t n; vec[0].iov_base = buf; vec[0].iov_len = 1; n = pwritev(1, vec, 1, 0); if (n == -1) return 1" . auto/feature # strerrordesc_np(), introduced in glibc 2.32 ngx_feature="strerrordesc_np()" ngx_feature_name="NGX_HAVE_STRERRORDESC_NP" ngx_feature_run=no ngx_feature_incs='#include <string.h>' ngx_feature_path= ngx_feature_libs= ngx_feature_test="char *p; p = strerrordesc_np(0); if (p == NULL) return 1" . auto/feature if [ $ngx_found = no ]; then ngx_feature="sys_nerr" ngx_feature_name="NGX_SYS_NERR" ngx_feature_run=value ngx_feature_incs='#include <errno.h> #include <stdio.h>' ngx_feature_path= ngx_feature_libs= ngx_feature_test='printf("%d", sys_nerr);' . auto/feature fi if [ $ngx_found = no ]; then # Cygiwn defines _sys_nerr ngx_feature="_sys_nerr" ngx_feature_name="NGX_SYS_NERR" ngx_feature_run=value ngx_feature_incs='#include <errno.h> #include <stdio.h>' ngx_feature_path= ngx_feature_libs= ngx_feature_test='printf("%d", _sys_nerr);' . auto/feature fi ngx_feature="localtime_r()" ngx_feature_name="NGX_HAVE_LOCALTIME_R" ngx_feature_run=no ngx_feature_incs="#include <time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct tm t; time_t c=0; localtime_r(&c, &t)" . auto/feature ngx_feature="clock_gettime(CLOCK_MONOTONIC)" ngx_feature_name="NGX_HAVE_CLOCK_MONOTONIC" ngx_feature_run=no ngx_feature_incs="#include <time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct timespec ts; clock_gettime(CLOCK_MONOTONIC, &ts)" . auto/feature if [ $ngx_found = no ]; then # Linux before glibc 2.17, notably CentOS 6 ngx_feature="clock_gettime(CLOCK_MONOTONIC) in librt" ngx_feature_libs="-lrt" . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS -lrt" fi fi ngx_feature="posix_memalign()" ngx_feature_name="NGX_HAVE_POSIX_MEMALIGN" ngx_feature_run=no ngx_feature_incs="#include <stdlib.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="void *p; int n; n = posix_memalign(&p, 4096, 4096); if (n != 0) return 1" . auto/feature ngx_feature="memalign()" ngx_feature_name="NGX_HAVE_MEMALIGN" ngx_feature_run=no ngx_feature_incs="#include <stdlib.h> #include <malloc.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="void *p; p = memalign(4096, 4096); if (p == NULL) return 1" . auto/feature ngx_feature="mmap(MAP_ANON|MAP_SHARED)" ngx_feature_name="NGX_HAVE_MAP_ANON" ngx_feature_run=yes ngx_feature_incs="#include <sys/mman.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="void *p; p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_ANON|MAP_SHARED, -1, 0); if (p == MAP_FAILED) return 1;" . auto/feature ngx_feature='mmap("/dev/zero", MAP_SHARED)' ngx_feature_name="NGX_HAVE_MAP_DEVZERO" ngx_feature_run=yes ngx_feature_incs="#include <sys/mman.h> #include <sys/stat.h> #include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test='void *p; int fd; fd = open("/dev/zero", O_RDWR); p = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED, fd, 0); if (p == MAP_FAILED) return 1;' . auto/feature ngx_feature="System V shared memory" ngx_feature_name="NGX_HAVE_SYSVSHM" ngx_feature_run=yes ngx_feature_incs="#include <sys/ipc.h> #include <sys/shm.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int id; id = shmget(IPC_PRIVATE, 4096, (SHM_R|SHM_W|IPC_CREAT)); if (id == -1) return 1; shmctl(id, IPC_RMID, NULL);" . auto/feature ngx_feature="POSIX semaphores" ngx_feature_name="NGX_HAVE_POSIX_SEM" ngx_feature_run=yes ngx_feature_incs="#include <semaphore.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="sem_t sem; if (sem_init(&sem, 1, 0) == -1) return 1; sem_destroy(&sem);" . auto/feature if [ $ngx_found = no ]; then # Linux has POSIX semaphores in libpthread ngx_feature="POSIX semaphores in libpthread" ngx_feature_libs=-lpthread . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS -lpthread" NGX_LIBPTHREAD="-lpthread" fi fi if [ $ngx_found = no ]; then # Solaris has POSIX semaphores in librt ngx_feature="POSIX semaphores in librt" ngx_feature_libs=-lrt . auto/feature if [ $ngx_found = yes ]; then CORE_LIBS="$CORE_LIBS -lrt" fi fi ngx_feature="struct msghdr.msg_control" ngx_feature_name="NGX_HAVE_MSGHDR_MSG_CONTROL" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <stdio.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct msghdr msg; printf(\"%d\", (int) sizeof(msg.msg_control))" . auto/feature ngx_feature="ioctl(FIONBIO)" ngx_feature_name="NGX_HAVE_FIONBIO" ngx_feature_run=no ngx_feature_incs="#include <sys/ioctl.h> #include <stdio.h> $NGX_INCLUDE_SYS_FILIO_H" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int i = FIONBIO; printf(\"%d\", i)" . auto/feature ngx_feature="ioctl(FIONREAD)" ngx_feature_name="NGX_HAVE_FIONREAD" ngx_feature_run=no ngx_feature_incs="#include <sys/ioctl.h> #include <stdio.h> $NGX_INCLUDE_SYS_FILIO_H" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int i = FIONREAD; printf(\"%d\", i)" . auto/feature ngx_feature="struct tm.tm_gmtoff" ngx_feature_name="NGX_HAVE_GMTOFF" ngx_feature_run=no ngx_feature_incs="#include <time.h> #include <stdio.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct tm tm; tm.tm_gmtoff = 0; printf(\"%d\", (int) tm.tm_gmtoff)" . auto/feature ngx_feature="struct dirent.d_namlen" ngx_feature_name="NGX_HAVE_D_NAMLEN" ngx_feature_run=no ngx_feature_incs="#include <dirent.h> #include <stdio.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct dirent dir; dir.d_namlen = 0; printf(\"%d\", (int) dir.d_namlen)" . auto/feature ngx_feature="struct dirent.d_type" ngx_feature_name="NGX_HAVE_D_TYPE" ngx_feature_run=no ngx_feature_incs="#include <dirent.h> #include <stdio.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct dirent dir; dir.d_type = DT_REG; printf(\"%d\", (int) dir.d_type)" . auto/feature ngx_feature="sysconf(_SC_NPROCESSORS_ONLN)" ngx_feature_name="NGX_HAVE_SC_NPROCESSORS_ONLN" ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test="sysconf(_SC_NPROCESSORS_ONLN)" . auto/feature ngx_feature="sysconf(_SC_LEVEL1_DCACHE_LINESIZE)" ngx_feature_name="NGX_HAVE_LEVEL1_DCACHE_LINESIZE" ngx_feature_run=no ngx_feature_incs= ngx_feature_path= ngx_feature_libs= ngx_feature_test="sysconf(_SC_LEVEL1_DCACHE_LINESIZE)" . auto/feature ngx_feature="openat(), fstatat()" ngx_feature_name="NGX_HAVE_OPENAT" ngx_feature_run=no ngx_feature_incs="#include <sys/types.h> #include <sys/stat.h> #include <fcntl.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct stat sb; openat(AT_FDCWD, \".\", O_RDONLY|O_NOFOLLOW); fstatat(AT_FDCWD, \".\", &sb, AT_SYMLINK_NOFOLLOW);" . auto/feature ngx_feature="getaddrinfo()" ngx_feature_name="NGX_HAVE_GETADDRINFO" ngx_feature_run=no ngx_feature_incs="#include <sys/types.h> #include <sys/socket.h> #include <netdb.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test='struct addrinfo *res; if (getaddrinfo("localhost", NULL, NULL, &res) != 0) return 1; freeaddrinfo(res)' . auto/feature