Mercurial > hg > nginx-quic
annotate src/os/win32/ngx_thread.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> |
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date | Mon, 27 Apr 2015 18:25:42 +0300 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_THREAD_H_INCLUDED_ |
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9 #define _NGX_THREAD_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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461 | 16 typedef HANDLE ngx_tid_t; |
563 | 17 typedef DWORD ngx_thread_value_t; |
461 | 18 |
19 | |
563 | 20 ngx_err_t ngx_create_thread(ngx_tid_t *tid, |
21 ngx_thread_value_t (__stdcall *func)(void *arg), void *arg, ngx_log_t *log); | |
461 | 22 |
23 #define ngx_log_tid GetCurrentThreadId() | |
24 #define NGX_TID_T_FMT "%ud" | |
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27 #endif /* _NGX_THREAD_H_INCLUDED_ */ |