Mercurial > hg > nginx
view auto/unix @ 6891:749bcfdf097a stable-1.10
HTTP/2: fixed posted streams handling.
A bug was introduced by 82efcedb310b that could lead to timing out of
responses or segmentation fault, when accept_mutex was enabled.
The output queue in HTTP/2 can contain frames from different streams.
When the queue is sent, all related write handlers need to be called.
In order to do so, the streams were added to the h2c->posted queue
after handling sent frames. Then this queue was processed in
ngx_http_v2_write_handler().
If accept_mutex is enabled, the event's "ready" flag is set but its
handler is not called immediately. Instead, the event is added to
the ngx_posted_events queue. At the same time in this queue can be
events from upstream connections. Such events can result in sending
output queue before ngx_http_v2_write_handler() is triggered. And
at the time ngx_http_v2_write_handler() is called, the output queue
can be already empty with some streams added to h2c->posted.
But after 82efcedb310b, these streams weren't processed if all frames
have already been sent and the output queue was empty. This might lead
to a situation when a number of streams were get stuck in h2c->posted
queue for a long time. Eventually these streams might get closed by
the send timeout.
In the worst case this might also lead to a segmentation fault, if
already freed stream was left in the h2c->posted queue. This could
happen if one of the streams was terminated but wasn't closed, due to
the HEADERS frame or a partially sent DATA frame left in the output
queue. If this happened the ngx_http_v2_filter_cleanup() handler
removed the stream from the h2c->waiting or h2c->posted queue on
termination stage, before the frame has been sent, and the stream
was again added to the h2c->posted queue after the frame was sent.
In order to fix all these problems and simplify the code, write
events of fake stream connections are now added to ngx_posted_events
instead of using a custom h2c->posted queue.
| author | Valentin Bartenev <vbart@nginx.com> |
|---|---|
| date | Mon, 28 Nov 2016 20:58:14 +0300 |
| parents | 8426275a13fd |
| children | 1d0e03db9f8e |
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="int kq; kq = 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 $KQUEUE_SRCS" EVENT_FOUND=YES ngx_feature="kqueue's NOTE_LOWAT" ngx_feature_name="NGX_HAVE_LOWAT_EVENT" ngx_feature_run=no ngx_feature_incs="#include <sys/event.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct kevent kev; kev.fflags = NOTE_LOWAT;" . auto/feature ngx_feature="kqueue's EVFILT_TIMER" ngx_feature_name="NGX_HAVE_TIMER_EVENT" ngx_feature_run=yes ngx_feature_incs="#include <sys/event.h> #include <sys/time.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="int kq; struct kevent kev; struct timespec ts; if ((kq = kqueue()) == -1) return 1; kev.ident = 0; kev.filter = EVFILT_TIMER; kev.flags = EV_ADD|EV_ENABLE; kev.fflags = 0; kev.data = 1000; kev.udata = 0; ts.tv_sec = 0; ts.tv_nsec = 0; if (kevent(kq, &kev, 1, &kev, 1, &ts) == -1) return 1; if (kev.flags & EV_ERROR) return 1;" . auto/feature fi fi if [ "$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, NULL)" . auto/feature if [ $ngx_found != yes ]; 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 != yes ]; 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="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 # 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 # 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="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="int n; struct aiocb iocb; iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; n = 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) 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="int n = SYS_eventfd; struct iocb iocb; iocb.aio_lio_opcode = IOCB_CMD_PREAD; iocb.aio_flags = IOCB_FLAG_RESFD; iocb.aio_resfd = -1;" . 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 [ $ngx_found = no ]; then ngx_feature="eventfd() (SYS_eventfd)" ngx_feature_incs="#include <sys/syscall.h>" ngx_feature_test="int n = SYS_eventfd" . auto/feature fi fi have=NGX_HAVE_UNIX_DOMAIN . auto/have ngx_feature_libs= # C types ngx_type="int"; . auto/types/sizeof ngx_type="long"; . auto/types/sizeof ngx_type="long long"; . auto/types/sizeof ngx_type="void *"; . auto/types/sizeof; ngx_ptr_size=$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 if [ $NGX_IPV6 = YES ]; then ngx_feature="AF_INET6" ngx_feature_name="NGX_HAVE_INET6" ngx_feature_run=no ngx_feature_incs="#include <sys/socket.h> #include <netinet/in.h> #include <arpa/inet.h>" ngx_feature_path= ngx_feature_libs= ngx_feature_test="struct sockaddr_in6 sin6; sin6.sin6_family = AF_INET6;" . auto/feature fi ngx_feature="setproctitle()" ngx_feature_name="NGX_HAVE_SETPROCTITLE" ngx_feature_run=no ngx_feature_incs="#include <stdlib.h>" ngx_feature_path= ngx_feature_libs=$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="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" 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="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="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