The Tor Browser: nsprpub/pr/src/memory/prshma.c@ca08bd8f51b2

     1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 /*

     7 ** prshma.h -- NSPR Anonymous Shared Memory

     8 **

     9 **

    10 */

    12 #include "primpl.h"

    14 extern PRLogModuleInfo *_pr_shma_lm;

    16 #if defined(XP_UNIX)

    17 /* defined in pr/src/md/unix/uxshm.c */

    18 #elif defined(WIN32)

    19 /* defined in pr/src/md/windows/w32shm.c */

    20 #else

    21 extern PRFileMap * _PR_MD_OPEN_ANON_FILE_MAP( const char *dirName, PRSize size, PRFileMapProtect prot )

    22 {

    23     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);

    24     return NULL;

    25 }

    26 extern PRStatus _PR_MD_EXPORT_FILE_MAP_AS_STRING(PRFileMap *fm, PRSize bufSize, char *buf)

    27 {

    28     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);

    29     return PR_FAILURE;

    30 }

    31 extern PRFileMap * _PR_MD_IMPORT_FILE_MAP_FROM_STRING(const char *fmstring)

    32 {

    33     PR_SetError(PR_NOT_IMPLEMENTED_ERROR, 0);

    34     return NULL;

    35 }

    36 #endif

    38 /*

    39 ** PR_OpenAnonFileMap() -- Creates an anonymous file-mapped shared memory

    40 **

    41 */

    42 PR_IMPLEMENT(PRFileMap*)

    43 PR_OpenAnonFileMap(

    44     const char *dirName,

    45     PRSize      size,

    46     PRFileMapProtect prot

    47 )

    48 {

    49     return(_PR_MD_OPEN_ANON_FILE_MAP( dirName, size, prot ));

    50 } /* end PR_OpenAnonFileMap() */

    52 /*

    53 ** PR_ProcessAttrSetInheritableFileMap() -- Prepare FileMap for export

    54 **   to my children processes via PR_CreateProcess()

    55 **

    56 **

    57 */

    58 PR_IMPLEMENT( PRStatus)

    59 PR_ProcessAttrSetInheritableFileMap(

    60     PRProcessAttr   *attr,

    61     PRFileMap       *fm,

    62     const char      *shmname

    63 )

    64 {

    65     PR_SetError( PR_NOT_IMPLEMENTED_ERROR, 0 );

    66     return( PR_FAILURE);

    67 } /* end PR_ProcessAttrSetInheritableFileMap() */

    69 /*

    70 ** PR_GetInheritedFileMap() -- Import a PRFileMap previously exported

    71 **   by my parent process via PR_CreateProcess()

    72 **

    73 */

    74 PR_IMPLEMENT( PRFileMap *)

    75 PR_GetInheritedFileMap(

    76     const char *shmname

    77 )

    78 {

    79     PRFileMap   *fm = NULL;

    80     PR_SetError( PR_NOT_IMPLEMENTED_ERROR, 0 );

    81     return( fm );

    82 } /* end PR_GetInhteritedFileMap() */

    84 /*

    85 ** PR_ExportFileMapAsString() -- Creates a string identifying a PRFileMap

    86 **

    87 */

    88 PR_IMPLEMENT( PRStatus )

    89 PR_ExportFileMapAsString(

    90     PRFileMap *fm,

    91     PRSize    bufSize,

    92     char      *buf

    93 )

    94 {

    95     return( _PR_MD_EXPORT_FILE_MAP_AS_STRING( fm, bufSize, buf ));

    96 } /* end PR_ExportFileMapAsString() */

    98 /*

    99 ** PR_ImportFileMapFromString() -- Creates a PRFileMap from the identifying string

   100 **

   101 **

   102 */

   103 PR_IMPLEMENT( PRFileMap * )

   104 PR_ImportFileMapFromString(

   105     const char *fmstring

   106 )

   107 {

   108     return( _PR_MD_IMPORT_FILE_MAP_FROM_STRING(fmstring));

   109 } /* end PR_ImportFileMapFromString() */

   110 /* end prshma.c */

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