view src/os/unix/ngx_freebsd_config.h @ 7985:ec2e6893caaa

Simplified sendfile(SF_NODISKIO) usage. Starting with FreeBSD 11, there is no need to use AIO operations to preload data into cache for sendfile(SF_NODISKIO) to work. Instead, sendfile() handles non-blocking loading data from disk by itself. It still can, however, return EBUSY if a page is already being loaded (for example, by a different process). If this happens, we now post an event for the next event loop iteration, so sendfile() is retried "after a short period", as manpage recommends. The limit of the number of EBUSY tolerated without any progress is preserved, but now it does not result in an alert, since on an idle system event loop iteration might be very short and EBUSY can happen many times in a row. Instead, SF_NODISKIO is simply disabled for one call once the limit is reached. With this change, sendfile(SF_NODISKIO) is now used automatically as long as sendfile() is enabled, and no longer requires "aio on;".
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 27 Dec 2021 19:48:33 +0300
parents 7f035fd1ec7b
children 93bbb9fbf30d
line wrap: on
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/*
 * Copyright (C) Igor Sysoev
 * Copyright (C) Nginx, Inc.
 */


#ifndef _NGX_FREEBSD_CONFIG_H_INCLUDED_
#define _NGX_FREEBSD_CONFIG_H_INCLUDED_


#include <sys/types.h>
#include <sys/time.h>
#include <unistd.h>
#include <stdarg.h>
#include <stddef.h>             /* offsetof() */
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <pwd.h>
#include <grp.h>
#include <dirent.h>
#include <glob.h>
#include <time.h>
#include <sys/param.h>          /* ALIGN() */
#include <sys/mount.h>          /* statfs() */

#include <sys/filio.h>          /* FIONBIO */
#include <sys/uio.h>
#include <sys/stat.h>
#include <fcntl.h>

#include <sys/wait.h>
#include <sys/mman.h>
#include <sys/resource.h>
#include <sched.h>

#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>        /* TCP_NODELAY, TCP_NOPUSH */
#include <arpa/inet.h>
#include <netdb.h>
#include <sys/un.h>

#include <libutil.h>            /* setproctitle() before 4.1 */
#include <osreldate.h>
#include <sys/sysctl.h>

#include <dlfcn.h>


#if __FreeBSD_version < 400017

/*
 * FreeBSD 3.x has no CMSG_SPACE() and CMSG_LEN() and has the broken CMSG_DATA()
 */

#undef  CMSG_SPACE
#define CMSG_SPACE(l)       (ALIGN(sizeof(struct cmsghdr)) + ALIGN(l))

#undef  CMSG_LEN
#define CMSG_LEN(l)         (ALIGN(sizeof(struct cmsghdr)) + (l))

#undef  CMSG_DATA
#define CMSG_DATA(cmsg)     ((u_char *)(cmsg) + ALIGN(sizeof(struct cmsghdr)))

#endif


#include <ngx_auto_config.h>


#if (NGX_HAVE_POSIX_SEM)
#include <semaphore.h>
#endif


#if (NGX_HAVE_POLL)
#include <poll.h>
#endif


#if (NGX_HAVE_KQUEUE)
#include <sys/event.h>
#endif


#if (NGX_HAVE_FILE_AIO)

#include <aio.h>
typedef struct aiocb  ngx_aiocb_t;

#if (__FreeBSD_version < 700005 && !defined __DragonFly__)
#define sival_ptr     sigval_ptr
#endif

#endif


#define NGX_LISTEN_BACKLOG        -1


#ifdef __DragonFly__
#define NGX_KEEPALIVE_FACTOR      1000
#endif


#ifndef IOV_MAX
#define IOV_MAX   1024
#endif


#ifndef NGX_HAVE_INHERITED_NONBLOCK
#define NGX_HAVE_INHERITED_NONBLOCK  1
#endif


#define NGX_HAVE_OS_SPECIFIC_INIT    1
#define NGX_HAVE_DEBUG_MALLOC        1


extern char **environ;
extern char  *malloc_options;


#endif /* _NGX_FREEBSD_CONFIG_H_INCLUDED_ */