Mercurial > hg > nginx

annotate src/os/unix/ngx_linux_config.h @ 3440:88741ec7731a stable-0.7

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merge r3294, r3305: Fix a bug introduced in r2032: After a child process has read a terminate message from a channel, the process tries to read the channel again. The kernel (at least FreeBSD) may preempt the process and sends a SIGIO signal to a master process. The master process sends a new terminate message, the kernel switches again to the the child process, and the child process reads the messages instead of an EAGAIN error. And this may repeat over and over. Being that the child process can not exit the cycle and test the termination flag set by the message handler. The fix disallow the master process to send a new terminate message on SIGIO signal reception. It may send the message only on SIGALARM signal.
author Igor Sysoev <igor@sysoev.ru>
date Mon, 01 Feb 2010 15:49:36 +0000
parents 2ca36a62c8a1
children 6060225e9261
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_LINUX_CONFIG_H_INCLUDED_
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8 #define _NGX_LINUX_CONFIG_H_INCLUDED_
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11 #ifndef _GNU_SOURCE
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12 #define _GNU_SOURCE /* pread(), pwrite(), gethostname() */
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13 #endif
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15 #define _FILE_OFFSET_BITS 64
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17 #include <sys/types.h>
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18 #include <sys/time.h>
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19 #include <unistd.h>
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20 #include <stdarg.h>
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21 #include <stddef.h> /* offsetof() */
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22 #include <stdio.h>
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23 #include <stdlib.h>
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24 #include <errno.h>
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25 #include <string.h>
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26 #include <signal.h>
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27 #include <pwd.h>
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28 #include <grp.h>
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29 #include <dirent.h>
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30 #include <glob.h>
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31 #include <sys/vfs.h> /* statfs() */
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33 #include <sys/uio.h>
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34 #include <sys/stat.h>
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35 #include <fcntl.h>
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37 #include <sys/wait.h>
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38 #include <sys/mman.h>
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39 #include <sys/resource.h>
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40 #include <sched.h>
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42 #include <sys/socket.h>
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43 #include <netinet/in.h>
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44 #include <netinet/tcp.h> /* TCP_NODELAY, TCP_CORK */
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45 #include <arpa/inet.h>
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46 #include <netdb.h>
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47 #include <sys/un.h>
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49 #include <time.h> /* tzset() */
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50 #include <malloc.h> /* memalign() */
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51 #include <limits.h> /* IOV_MAX */
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52 #include <sys/ioctl.h>
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53 #include <sys/sysctl.h>
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54 #include <crypt.h>
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55 #include <sys/utsname.h> /* uname() */
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58 #include <ngx_auto_config.h>
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61 #if (NGX_HAVE_SYS_PRCTL_H)
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62 #include <sys/prctl.h>
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63 #endif
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66 #if (NGX_HAVE_SENDFILE64)
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67 #include <sys/sendfile.h>
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68 #else
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69 extern ssize_t sendfile(int s, int fd, int32_t *offset, size_t size);
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70 #define NGX_SENDFILE_LIMIT 0x80000000
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71 #endif
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74 #if (NGX_HAVE_POLL || NGX_HAVE_RTSIG)
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75 #include <poll.h>
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76 #endif
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79 #if (NGX_HAVE_EPOLL)
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80 #include <sys/epoll.h>
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81 #endif
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83
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84 #define NGX_LISTEN_BACKLOG 511
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87 #if defined TCP_DEFER_ACCEPT && !defined NGX_HAVE_DEFERRED_ACCEPT
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88 #define NGX_HAVE_DEFERRED_ACCEPT 1
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89 #endif
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92 #ifndef NGX_HAVE_SO_SNDLOWAT
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93 /* setsockopt(SO_SNDLOWAT) returns ENOPROTOOPT */
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94 #define NGX_HAVE_SO_SNDLOWAT 0
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95 #endif
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98 #ifndef NGX_HAVE_INHERITED_NONBLOCK
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99 #define NGX_HAVE_INHERITED_NONBLOCK 0
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100 #endif
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103 #define NGX_HAVE_OS_SPECIFIC_INIT 1
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106 extern char **environ;
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109 #endif /* _NGX_LINUX_CONFIG_H_INCLUDED_ */