Mercurial > hg > nginx-quic
view src/os/unix/ngx_setproctitle.c @ 7105:0846dd76a487
Stream: fixed logging UDP upstream timeout.
Previously, when the first UDP response packet was not received from the
proxied server within proxy_timeout, no error message was logged before
switching to the next upstream. Additionally, when one of succeeding response
packets was not received within the timeout, the timeout error had low severity
because it was logged as a client connection error as opposed to upstream
connection error.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 12 Sep 2017 13:44:04 +0300 |
parents | 67653855682e |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #if (NGX_SETPROCTITLE_USES_ENV) /* * To change the process title in Linux and Solaris we have to set argv[1] * to NULL and to copy the title to the same place where the argv[0] points to. * However, argv[0] may be too small to hold a new title. Fortunately, Linux * and Solaris store argv[] and environ[] one after another. So we should * ensure that is the continuous memory and then we allocate the new memory * for environ[] and copy it. After this we could use the memory starting * from argv[0] for our process title. * * The Solaris's standard /bin/ps does not show the changed process title. * You have to use "/usr/ucb/ps -w" instead. Besides, the UCB ps does not * show a new title if its length less than the origin command line length. * To avoid it we append to a new title the origin command line in the * parenthesis. */ extern char **environ; static char *ngx_os_argv_last; ngx_int_t ngx_init_setproctitle(ngx_log_t *log) { u_char *p; size_t size; ngx_uint_t i; size = 0; for (i = 0; environ[i]; i++) { size += ngx_strlen(environ[i]) + 1; } p = ngx_alloc(size, log); if (p == NULL) { return NGX_ERROR; } ngx_os_argv_last = ngx_os_argv[0]; for (i = 0; ngx_os_argv[i]; i++) { if (ngx_os_argv_last == ngx_os_argv[i]) { ngx_os_argv_last = ngx_os_argv[i] + ngx_strlen(ngx_os_argv[i]) + 1; } } for (i = 0; environ[i]; i++) { if (ngx_os_argv_last == environ[i]) { size = ngx_strlen(environ[i]) + 1; ngx_os_argv_last = environ[i] + size; ngx_cpystrn(p, (u_char *) environ[i], size); environ[i] = (char *) p; p += size; } } ngx_os_argv_last--; return NGX_OK; } void ngx_setproctitle(char *title) { u_char *p; #if (NGX_SOLARIS) ngx_int_t i; size_t size; #endif ngx_os_argv[1] = NULL; p = ngx_cpystrn((u_char *) ngx_os_argv[0], (u_char *) "nginx: ", ngx_os_argv_last - ngx_os_argv[0]); p = ngx_cpystrn(p, (u_char *) title, ngx_os_argv_last - (char *) p); #if (NGX_SOLARIS) size = 0; for (i = 0; i < ngx_argc; i++) { size += ngx_strlen(ngx_argv[i]) + 1; } if (size > (size_t) ((char *) p - ngx_os_argv[0])) { /* * ngx_setproctitle() is too rare operation so we use * the non-optimized copies */ p = ngx_cpystrn(p, (u_char *) " (", ngx_os_argv_last - (char *) p); for (i = 0; i < ngx_argc; i++) { p = ngx_cpystrn(p, (u_char *) ngx_argv[i], ngx_os_argv_last - (char *) p); p = ngx_cpystrn(p, (u_char *) " ", ngx_os_argv_last - (char *) p); } if (*(p - 1) == ' ') { *(p - 1) = ')'; } } #endif if (ngx_os_argv_last - (char *) p) { ngx_memset(p, NGX_SETPROCTITLE_PAD, ngx_os_argv_last - (char *) p); } ngx_log_debug1(NGX_LOG_DEBUG_CORE, ngx_cycle->log, 0, "setproctitle: \"%s\"", ngx_os_argv[0]); } #endif /* NGX_SETPROCTITLE_USES_ENV */