Mercurial > trustbridge > nss-cmake-static

annotate nspr/pr/src/md/windows/w32shm.c @ 3:150b72113545

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Add DBM and legacydb support
author Andre Heinecke <andre.heinecke@intevation.de>
date Tue, 05 Aug 2014 18:32:02 +0200
parents 1e5118fa0cb1
children
rev   line source
0
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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2 /* This Source Code Form is subject to the terms of the Mozilla Public
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3 * License, v. 2.0. If a copy of the MPL was not distributed with this
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4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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5
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6 #include <private/primpl.h>
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7 #include <string.h>
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8 #include <prshm.h>
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9 #include <prerr.h>
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10 #include <prmem.h>
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11
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12 #if defined(PR_HAVE_WIN32_NAMED_SHARED_MEMORY)
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13
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14 extern PRLogModuleInfo *_pr_shm_lm;
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15
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16 /*
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17 * NSPR-to-NT access right mapping table for file-mapping objects.
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18 *
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19 * The OR of these three access masks must equal FILE_MAP_ALL_ACCESS.
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20 * This is because if a file-mapping object with the specified name
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21 * exists, CreateFileMapping requests full access to the existing
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22 * object.
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23 */
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24 static DWORD filemapAccessTable[] = {
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25 FILE_MAP_ALL_ACCESS & ~FILE_MAP_WRITE, /* read */
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26 FILE_MAP_ALL_ACCESS & ~FILE_MAP_READ, /* write */
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27 0 /* execute */
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28 };
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29
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30 extern PRSharedMemory * _MD_OpenSharedMemory(
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31 const char *name,
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32 PRSize size,
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33 PRIntn flags,
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34 PRIntn mode
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35 )
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36 {
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37 char ipcname[PR_IPC_NAME_SIZE];
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38 PRStatus rc = PR_SUCCESS;
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39 DWORD dwHi, dwLo;
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40 PRSharedMemory *shm;
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41 DWORD flProtect = ( PAGE_READWRITE );
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42 SECURITY_ATTRIBUTES sa;
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43 LPSECURITY_ATTRIBUTES lpSA = NULL;
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44 PSECURITY_DESCRIPTOR pSD = NULL;
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45 PACL pACL = NULL;
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46
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47 rc = _PR_MakeNativeIPCName( name, ipcname, PR_IPC_NAME_SIZE, _PRIPCShm );
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48 if ( PR_FAILURE == rc )
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49 {
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50 PR_SetError(PR_UNKNOWN_ERROR, 0 );
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51 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: name is invalid"));
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52 return(NULL);
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53 }
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54
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55 shm = PR_NEWZAP( PRSharedMemory );
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56 if ( NULL == shm )
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57 {
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58 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
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59 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New PRSharedMemory out of memory"));
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60 return(NULL);
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61 }
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62
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63 shm->ipcname = PR_MALLOC( (PRUint32) (strlen( ipcname ) + 1) );
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64 if ( NULL == shm->ipcname )
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65 {
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66 PR_SetError(PR_OUT_OF_MEMORY_ERROR, 0 );
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67 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG, ( "PR_OpenSharedMemory: New shm->ipcname out of memory"));
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68 PR_DELETE(shm);
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69 return(NULL);
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70 }
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71
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72 /* copy args to struct */
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73 strcpy( shm->ipcname, ipcname );
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74 shm->size = size;
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75 shm->mode = mode;
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76 shm->flags = flags;
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77 shm->ident = _PR_SHM_IDENT;
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78
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79 if (flags & PR_SHM_CREATE ) {
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80 dwHi = (DWORD) (((PRUint64) shm->size >> 32) & 0xffffffff);
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81 dwLo = (DWORD) (shm->size & 0xffffffff);
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82
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83 if (_PR_NT_MakeSecurityDescriptorACL(mode, filemapAccessTable,
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84 &pSD, &pACL) == PR_SUCCESS) {
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85 sa.nLength = sizeof(sa);
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86 sa.lpSecurityDescriptor = pSD;
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87 sa.bInheritHandle = FALSE;
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88 lpSA = &sa;
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89 }
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90 #ifdef WINCE
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91 {
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92 /*
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93 * This is assuming that the name will never be larger than
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94 * MAX_PATH. Should we dynamically allocate?
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95 */
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96 PRUnichar wideIpcName[MAX_PATH];
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97 MultiByteToWideChar(CP_ACP, 0, shm->ipcname, -1,
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98 wideIpcName, MAX_PATH);
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99 shm->handle = CreateFileMappingW(
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100 (HANDLE)-1 ,
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101 lpSA,
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102 flProtect,
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103 dwHi,
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104 dwLo,
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105 wideIpcName);
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106 }
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107 #else
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108 shm->handle = CreateFileMappingA(
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109 (HANDLE)-1 ,
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110 lpSA,
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111 flProtect,
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112 dwHi,
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113 dwLo,
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114 shm->ipcname);
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115 #endif
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116 if (lpSA != NULL) {
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117 _PR_NT_FreeSecurityDescriptorACL(pSD, pACL);
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118 }
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119
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120 if ( NULL == shm->handle ) {
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121 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
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122 ( "PR_OpenSharedMemory: CreateFileMapping() failed: %s",
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123 shm->ipcname ));
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124 _PR_MD_MAP_DEFAULT_ERROR( GetLastError());
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125 PR_FREEIF( shm->ipcname )
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126 PR_DELETE( shm );
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127 return(NULL);
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128 } else {
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129 if (( flags & PR_SHM_EXCL) && ( GetLastError() == ERROR_ALREADY_EXISTS )) {
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130 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
131 ( "PR_OpenSharedMemory: Request exclusive & already exists",
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
132 shm->ipcname ));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
133 PR_SetError( PR_FILE_EXISTS_ERROR, ERROR_ALREADY_EXISTS );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
134 CloseHandle( shm->handle );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
135 PR_FREEIF( shm->ipcname )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
136 PR_DELETE( shm );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
137 return(NULL);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
138 } else {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
139 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
140 ( "PR_OpenSharedMemory: CreateFileMapping() success: %s, handle: %d",
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
141 shm->ipcname, shm->handle ));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
142 return(shm);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
143 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
144 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
145 } else {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
146 #ifdef WINCE
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
147 PR_SetError( PR_NOT_IMPLEMENTED_ERROR, 0 );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
148 shm->handle = NULL; /* OpenFileMapping not supported */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
149 #else
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
150 shm->handle = OpenFileMapping( FILE_MAP_WRITE, TRUE, shm->ipcname );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
151 #endif
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
152 if ( NULL == shm->handle ) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
153 _PR_MD_MAP_DEFAULT_ERROR( GetLastError());
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
154 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
155 ( "PR_OpenSharedMemory: OpenFileMapping() failed: %s, error: %d",
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
156 shm->ipcname, PR_GetOSError()));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
157 PR_FREEIF( shm->ipcname );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
158 PR_DELETE( shm );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
159 return(NULL);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
160 } else {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
161 PR_LOG(_pr_shm_lm, PR_LOG_DEBUG,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
162 ( "PR_OpenSharedMemory: OpenFileMapping() success: %s, handle: %d",
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
163 shm->ipcname, shm->handle ));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
164 return(shm);
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
165 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
166 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
167 /* returns from separate paths */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
168 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
169
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
170 extern void * _MD_AttachSharedMemory( PRSharedMemory *shm, PRIntn flags )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
171 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
172 PRUint32 access = FILE_MAP_WRITE;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
173 void *addr;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
174
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
175 PR_ASSERT( shm->ident == _PR_SHM_IDENT );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
176
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
177 if ( PR_SHM_READONLY & flags )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
178 access = FILE_MAP_READ;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
179
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
180 addr = MapViewOfFile( shm->handle,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
181 access,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
182 0, 0,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
183 shm->size );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
184
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
185 if ( NULL == addr ) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
186 _PR_MD_MAP_DEFAULT_ERROR( GetLastError());
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
187 PR_LOG( _pr_shm_lm, PR_LOG_ERROR,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
188 ("_MD_AttachSharedMemory: MapViewOfFile() failed. OSerror: %d", PR_GetOSError()));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
189 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
190
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
191 return( addr );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
192 } /* end _MD_ATTACH_SHARED_MEMORY() */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
193
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
194
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
195 extern PRStatus _MD_DetachSharedMemory( PRSharedMemory *shm, void *addr )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
196 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
197 PRStatus rc = PR_SUCCESS;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
198 BOOL wrc;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
199
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
200 PR_ASSERT( shm->ident == _PR_SHM_IDENT );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
201
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
202 wrc = UnmapViewOfFile( addr );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
203 if ( FALSE == wrc )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
204 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
205 _PR_MD_MAP_DEFAULT_ERROR( GetLastError());
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
206 PR_LOG( _pr_shm_lm, PR_LOG_ERROR,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
207 ("_MD_DetachSharedMemory: UnmapViewOfFile() failed. OSerror: %d", PR_GetOSError()));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
208 rc = PR_FAILURE;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
209 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
210
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
211 return( rc );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
212 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
213
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
214
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
215 extern PRStatus _MD_CloseSharedMemory( PRSharedMemory *shm )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
216 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
217 PRStatus rc = PR_SUCCESS;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
218 BOOL wrc;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
219
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
220 PR_ASSERT( shm->ident == _PR_SHM_IDENT );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
221
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
222 wrc = CloseHandle( shm->handle );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
223 if ( FALSE == wrc )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
224 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
225 _PR_MD_MAP_DEFAULT_ERROR( GetLastError());
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
226 PR_LOG( _pr_shm_lm, PR_LOG_ERROR,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
227 ("_MD_CloseSharedMemory: CloseHandle() failed. OSerror: %d", PR_GetOSError()));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
228 rc = PR_FAILURE;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
229 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
230 PR_FREEIF( shm->ipcname );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
231 PR_DELETE( shm );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
232
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
233 return( rc );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
234 } /* end _MD_CLOSE_SHARED_MEMORY() */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
235
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
236 extern PRStatus _MD_DeleteSharedMemory( const char *name )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
237 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
238 return( PR_SUCCESS );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
239 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
240
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
241
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
242 /*
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
243 ** Windows implementation of anonymous memory (file) map
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
244 */
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
245 extern PRLogModuleInfo *_pr_shma_lm;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
246
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
247 extern PRFileMap* _md_OpenAnonFileMap(
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
248 const char *dirName,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
249 PRSize size,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
250 PRFileMapProtect prot
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
251 )
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
252 {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
253 PRFileMap *fm;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
254 HANDLE hFileMap;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
255
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
256 fm = PR_CreateFileMap( (PRFileDesc*)-1, size, prot );
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
257 if ( NULL == fm ) {
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
258 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
259 ("_md_OpenAnonFileMap(): PR_CreateFileMap(): failed"));
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
260 goto Finished;
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
261 }
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
262
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
263 /*
1e5118fa0cb1 This is NSS with a Cmake Buildsyste
Andre Heinecke <andre.heinecke@intevation.de>
parents:
diff changeset
264 ** Make fm->md.hFileMap inheritable. We can't use
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265 ** GetHandleInformation and SetHandleInformation
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266 ** because these two functions fail with
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267 ** ERROR_CALL_NOT_IMPLEMENTED on Win95.
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268 */
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269 if (DuplicateHandle(GetCurrentProcess(), fm->md.hFileMap,
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270 GetCurrentProcess(), &hFileMap,
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271 0, TRUE /* inheritable */,
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272 DUPLICATE_SAME_ACCESS) == FALSE) {
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273 PR_SetError( PR_UNKNOWN_ERROR, GetLastError() );
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274 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
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275 ("_md_OpenAnonFileMap(): DuplicateHandle(): failed"));
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276 PR_CloseFileMap( fm );
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277 fm = NULL;
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278 goto Finished;
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279 }
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280 CloseHandle(fm->md.hFileMap);
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281 fm->md.hFileMap = hFileMap;
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282
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283 Finished:
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284 return(fm);
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285 } /* end md_OpenAnonFileMap() */
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286
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287 /*
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288 ** _md_ExportFileMapAsString()
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289 **
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290 */
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291 extern PRStatus _md_ExportFileMapAsString(
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292 PRFileMap *fm,
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293 PRSize bufSize,
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294 char *buf
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295 )
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296 {
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297 PRIntn written;
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298
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299 written = PR_snprintf( buf, (PRUint32) bufSize, "%d:%" PR_PRIdOSFD ":%ld",
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300 (PRIntn)fm->prot, (PROsfd)fm->md.hFileMap, (PRInt32)fm->md.dwAccess );
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301
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302 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
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303 ("_md_ExportFileMapAsString(): prot: %x, hFileMap: %x, dwAccess: %x",
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304 fm->prot, fm->md.hFileMap, fm->md.dwAccess ));
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305
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306 return((written == -1)? PR_FAILURE : PR_SUCCESS);
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307 } /* end _md_ExportFileMapAsString() */
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308
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309
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310 /*
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311 ** _md_ImportFileMapFromString()
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312 **
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313 */
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314 extern PRFileMap * _md_ImportFileMapFromString(
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315 const char *fmstring
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316 )
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317 {
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318 PRIntn prot;
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319 PROsfd hFileMap;
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320 PRInt32 dwAccess;
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321 PRFileMap *fm = NULL;
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322
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323 PR_sscanf( fmstring, "%d:%" PR_SCNdOSFD ":%ld",
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324 &prot, &hFileMap, &dwAccess );
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325
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326 fm = PR_NEWZAP(PRFileMap);
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327 if ( NULL == fm ) {
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328 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
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329 ("_md_ImportFileMapFromString(): PR_NEWZAP(): Failed"));
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330 return(fm);
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331 }
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332
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333 fm->prot = (PRFileMapProtect)prot;
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334 fm->md.hFileMap = (HANDLE)hFileMap;
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335 fm->md.dwAccess = (DWORD)dwAccess;
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336 fm->fd = (PRFileDesc*)-1;
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diff changeset
337
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338 PR_LOG( _pr_shma_lm, PR_LOG_DEBUG,
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diff changeset
339 ("_md_ImportFileMapFromString(): fm: %p, prot: %d, hFileMap: %8.8x, dwAccess: %8.8x, fd: %x",
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parents:
diff changeset
340 fm, prot, fm->md.hFileMap, fm->md.dwAccess, fm->fd));
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341 return(fm);
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342 } /* end _md_ImportFileMapFromString() */
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diff changeset
343
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344 #else
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345 Error! Why is PR_HAVE_WIN32_NAMED_SHARED_MEMORY not defined?
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346 #endif /* PR_HAVE_WIN32_NAMED_SHARED_MEMORY */
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diff changeset
347 /* --- end w32shm.c --- */
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