Mercurial > hg > nginx

annotate src/os/win32/ngx_shmem.c @ 7660:d33e17499088

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Version bump.
author Maxim Dounin <mdounin@mdounin.ru>
date Tue, 26 May 2020 22:03:00 +0300
parents af7eba90645d
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 /*
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 * Copyright (C) Igor Sysoev
4412
d620f497c50f Copyright updated.
Maxim Konovalov <maxim@nginx.com>
parents: 2904
diff changeset
4 * Copyright (C) Nginx, Inc.
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5 */
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #include <ngx_config.h>
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
9 #include <ngx_core.h>
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11
6133
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
12 /*
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
13 * Base addresses selected by system for shared memory mappings are likely
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
14 * to be different on Windows Vista and later versions due to address space
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
15 * layout randomization. This is however incompatible with storing absolute
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
16 * addresses within the shared memory.
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
17 *
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
18 * To make it possible to store absolute addresses we create mappings
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
19 * at the same address in all processes by starting mappings at predefined
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
20 * addresses. The addresses were selected somewhat randomly in order to
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
21 * minimize the probability that some other library doing something similar
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
22 * conflicts with us. The addresses are from the following typically free
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
23 * blocks:
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
24 *
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
25 * - 0x10000000 .. 0x70000000 (about 1.5 GB in total) on 32-bit platforms
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
26 * - 0x000000007fff0000 .. 0x000007f68e8b0000 (about 8 TB) on 64-bit platforms
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
27 *
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
28 * Additionally, we allow to change the mapping address once it was detected
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
29 * to be different from one originally used. This is needed to support
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
30 * reconfiguration.
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
31 */
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
32
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
33
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
34 #ifdef _WIN64
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
35 #define NGX_SHMEM_BASE 0x0000047047e00000
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
36 #else
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
37 #define NGX_SHMEM_BASE 0x2efe0000
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
38 #endif
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
39
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
40
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
41 ngx_uint_t ngx_allocation_granularity;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
42
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
43
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
44 ngx_int_t
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
45 ngx_shm_alloc(ngx_shm_t *shm)
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
46 {
6133
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
47 u_char *name;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
48 uint64_t size;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
49 static u_char *base = (u_char *) NGX_SHMEM_BASE;
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
50
4570
b3d4e9c66e24 Win32: fixed memory allocation for shmem name (ticket #134).
Maxim Dounin <mdounin@mdounin.ru>
parents: 4412
diff changeset
51 name = ngx_alloc(shm->name.len + 2 + NGX_INT32_LEN, shm->log);
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
52 if (name == NULL) {
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
53 return NGX_ERROR;
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
54 }
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
55
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
56 (void) ngx_sprintf(name, "%V_%s%Z", &shm->name, ngx_unique);
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
57
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
58 ngx_set_errno(0);
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
59
2903
beb0707ed8ab allow shared memory segments more than 4G
Igor Sysoev <igor@sysoev.ru>
parents: 2737
diff changeset
60 size = shm->size;
beb0707ed8ab allow shared memory segments more than 4G
Igor Sysoev <igor@sysoev.ru>
parents: 2737
diff changeset
61
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
62 shm->handle = CreateFileMapping(INVALID_HANDLE_VALUE, NULL, PAGE_READWRITE,
2903
beb0707ed8ab allow shared memory segments more than 4G
Igor Sysoev <igor@sysoev.ru>
parents: 2737
diff changeset
63 (u_long) (size >> 32),
beb0707ed8ab allow shared memory segments more than 4G
Igor Sysoev <igor@sysoev.ru>
parents: 2737
diff changeset
64 (u_long) (size & 0xffffffff),
beb0707ed8ab allow shared memory segments more than 4G
Igor Sysoev <igor@sysoev.ru>
parents: 2737
diff changeset
65 (char *) name);
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
66
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
67 if (shm->handle == NULL) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
68 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
2716
d5896f6608e8 move zone name from ngx_shm_zone_t to ngx_shm_t to use Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 605
diff changeset
69 "CreateFileMapping(%uz, %s) failed",
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
70 shm->size, name);
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
71 ngx_free(name);
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
72
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
73 return NGX_ERROR;
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
74 }
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
75
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
76 ngx_free(name);
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
77
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
78 if (ngx_errno == ERROR_ALREADY_EXISTS) {
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
79 shm->exists = 1;
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81
6133
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
82 shm->addr = MapViewOfFileEx(shm->handle, FILE_MAP_WRITE, 0, 0, 0, base);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
83
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
84 if (shm->addr != NULL) {
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
85 base += ngx_align(size, ngx_allocation_granularity);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
86 return NGX_OK;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
87 }
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
88
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
89 ngx_log_debug3(NGX_LOG_DEBUG_CORE, shm->log, ngx_errno,
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
90 "MapViewOfFileEx(%uz, %p) of file mapping \"%V\" failed, "
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
91 "retry without a base address",
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
92 shm->size, base, &shm->name);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
93
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
94 /*
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
95 * Order of shared memory zones may be different in the master process
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
96 * and worker processes after reconfiguration. As a result, the above
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
97 * may fail due to a conflict with a previously created mapping remapped
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
98 * to a different address. Additionally, there may be a conflict with
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
99 * some other uses of the memory. In this case we retry without a base
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
100 * address to let the system assign the address itself.
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
101 */
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
102
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
103 shm->addr = MapViewOfFile(shm->handle, FILE_MAP_WRITE, 0, 0, 0);
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
104
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
105 if (shm->addr != NULL) {
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
106 return NGX_OK;
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
109 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
110 "MapViewOfFile(%uz) of file mapping \"%V\" failed",
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
111 shm->size, &shm->name);
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
112
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
113 if (CloseHandle(shm->handle) == 0) {
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
114 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
115 "CloseHandle() of file mapping \"%V\" failed",
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
116 &shm->name);
2720
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
117 }
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
118
b3b8c66bd520 support attaching to an existent Win32 shared memory
Igor Sysoev <igor@sysoev.ru>
parents: 2716
diff changeset
119 return NGX_ERROR;
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
120 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
121
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
122
6133
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
123 ngx_int_t
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
124 ngx_shm_remap(ngx_shm_t *shm, u_char *addr)
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
125 {
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
126 if (UnmapViewOfFile(shm->addr) == 0) {
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
127 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
128 "UnmapViewOfFile(%p) of file mapping \"%V\" failed",
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
129 shm->addr, &shm->name);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
130 return NGX_ERROR;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
131 }
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
132
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
133 shm->addr = MapViewOfFileEx(shm->handle, FILE_MAP_WRITE, 0, 0, 0, addr);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
134
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
135 if (shm->addr != NULL) {
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
136 return NGX_OK;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
137 }
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
138
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
139 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
140 "MapViewOfFileEx(%uz, %p) of file mapping \"%V\" failed",
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
141 shm->size, addr, &shm->name);
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
142
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
143 return NGX_ERROR;
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
144 }
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
145
af7eba90645d Win32: shared memory base addresses and remapping.
Maxim Dounin <mdounin@mdounin.ru>
parents: 4570
diff changeset
146
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
147 void
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
148 ngx_shm_free(ngx_shm_t *shm)
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
149 {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
150 if (UnmapViewOfFile(shm->addr) == 0) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
151 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
152 "UnmapViewOfFile(%p) of file mapping \"%V\" failed",
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
153 shm->addr, &shm->name);
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
154 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
155
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
156 if (CloseHandle(shm->handle) == 0) {
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
157 ngx_log_error(NGX_LOG_ALERT, shm->log, ngx_errno,
2904
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
158 "CloseHandle() of file mapping \"%V\" failed",
474a9daf8c80 *) fix memory leak in successful case
Igor Sysoev <igor@sysoev.ru>
parents: 2903
diff changeset
159 &shm->name);
605
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
160 }
5dac8c7fb71b nginx-0.3.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
161 }