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view src/os/win32/ngx_time.h @ 6133:af7eba90645d
Win32: shared memory base addresses and remapping.
Two mechanisms are implemented to make it possible to store pointers
in shared memory on Windows, in particular on Windows Vista and later
versions with ASLR:
- The ngx_shm_remap() function added to allow remapping of a shared memory
zone to the address originally used for it in the master process. While
important, it doesn't solve the problem by itself as in many cases it's
not possible to use the address because of conflicts with other
allocations.
- We now create mappings at the same address in all processes by starting
mappings at predefined addresses normally unused by newborn processes.
These two mechanisms combined allow to use shared memory on Windows
almost without problems, including reloads.
Based on the patch by Sergey Brester:
http://mailman.nginx.org/pipermail/nginx-devel/2015-April/006836.html
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 27 Apr 2015 18:25:42 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_TIME_H_INCLUDED_ #define _NGX_TIME_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> typedef ngx_rbtree_key_t ngx_msec_t; typedef ngx_rbtree_key_int_t ngx_msec_int_t; typedef SYSTEMTIME ngx_tm_t; typedef FILETIME ngx_mtime_t; #define ngx_tm_sec wSecond #define ngx_tm_min wMinute #define ngx_tm_hour wHour #define ngx_tm_mday wDay #define ngx_tm_mon wMonth #define ngx_tm_year wYear #define ngx_tm_wday wDayOfWeek #define ngx_tm_sec_t u_short #define ngx_tm_min_t u_short #define ngx_tm_hour_t u_short #define ngx_tm_mday_t u_short #define ngx_tm_mon_t u_short #define ngx_tm_year_t u_short #define ngx_tm_wday_t u_short #define ngx_msleep Sleep #define NGX_HAVE_GETTIMEZONE 1 #define ngx_timezone_update() ngx_int_t ngx_gettimezone(void); void ngx_libc_localtime(time_t s, struct tm *tm); void ngx_libc_gmtime(time_t s, struct tm *tm); void ngx_gettimeofday(struct timeval *tp); #endif /* _NGX_TIME_H_INCLUDED_ */