Mercurial > hg > nginx
view auto/unix @ 7584:9d2ad2fb4423
SSL: available bytes handling (ticket #1431).
Added code to track number of bytes available in the socket.
This makes it possible to avoid looping for a long time while
working with fast enough peer when data are added to the socket buffer
faster than we are able to read and process data.
When kernel does not provide number of bytes available, it is
retrieved using ioctl(FIONREAD) as long as a buffer is filled by
SSL_read().
It is assumed that number of bytes returned by SSL_read() is close
to the number of bytes read from the socket, as we do not use
SSL compression. But even if it is not true for some reason, this
is not important, as we post an additional reading event anyway.
Note that data can be buffered at SSL layer, and it is not possible
to simply stop reading at some point and wait till the event will
be reported by the kernel again. This can be only done when there
are no data in SSL buffers, and there is no good way to find out if
it's the case.
Instead of trying to figure out if SSL buffers are empty, this patch
introduces events posted for the next event loop iteration - such
events will be processed only on the next event loop iteration,
after going into the kernel and retrieving additional events. This
seems to be simple and reliable approach.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 17 Oct 2019 16:02:24 +0300 |
parents | efd71d49bde0 |
children | 8cc5b0365ee5 |
line wrap: on
line source
# 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 else ngx_feature="eventfd()" ngx_feature_name="NGX_HAVE_EVENTFD" ngx_feature_run=no ngx_feature_incs="#include <sys/eventfd.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="(void) eventfd(0, 0)" . auto/feature if [ $ngx_found = yes ]; then have=NGX_HAVE_SYS_EVENTFD_H . auto/have fi if [ $ngx_found = no ]; then ngx_feature="eventfd() (SYS_eventfd)" ngx_feature_incs="#include <sys/syscall.h>" ngx_feature_test="(void) SYS_eventfd" . auto/feature fi fi have=NGX_HAVE_UNIX_DOMAIN . auto/have ngx_feature_libs= # C types ngx_type="int"; . auto/types/sizeof ngx_type="long"; . auto/types/sizeof ngx_type="long long"; . auto/types/sizeof ngx_type="void *"; . auto/types/sizeof; ngx_ptr_size=$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 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 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 if [ $ngx_found = no ]; then # Solaris has no sys_nerr ngx_feature='maximum errno' ngx_feature_name=NGX_SYS_NERR ngx_feature_run=value ngx_feature_incs='#include <errno.h> #include <string.h> #include <stdio.h>' ngx_feature_path= ngx_feature_libs= ngx_feature_test='int n; char *p; for (n = 1; n < 1000; n++) { errno = 0; p = strerror(n); if (errno == EINVAL || p == NULL || strncmp(p, "Unknown error", 13) == 0) { break; } } printf("%d", n);' . 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