nsprpub/config/libc_r.h

   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/. */
   5
   6 /* libc_r.h  --  macros, defines, etc. to make using reentrant libc calls */
   7 /*               a bit easier.  This was initially done for AIX pthreads, */
   8 /*               but should be usable for anyone...                       */
   9
  10 /* Most of these use locally defined space instead of static library space. */
  11 /* Because of this, we use the _INIT_R to declare/allocate space (stack),   */
  12 /* and the plain routines to actually do it..._WARNING_: avoid allocating   */
  13 /* memory wherever possible.  Memory allocation is fairly expensive, at     */
  14 /* least on AIX...use arrays instead (which allocate from the stack.)       */
  15 /* I know the names are a bit strange, but I wanted to be fairly certain    */
  16 /* that we didn't have any namespace corruption...in general, the inits are */
  17 /* R_<name>_INIT_R(), and the actual calls are R_<name>_R().                */
  18
  19 #ifndef _LIBC_R_H
  20 #define _LIBC_R_H
  21
  22 /************/
  23 /*  strtok  */
  24 /************/
  25 #define R_STRTOK_INIT_R() \
  26     char *r_strtok_r=NULL
  27
  28 #define R_STRTOK_R(return,source,delim) \
  29     return=strtok_r(source,delim,&r_strtok_r)
  30
  31 #define R_STRTOK_NORET_R(source,delim) \
  32     strtok_r(source,delim,&r_strtok_r)
  33
  34 /**************/
  35 /*  strerror  */
  36 /**************/
  37 #define R_MAX_STRERROR_LEN_R 8192     /* Straight from limits.h */
  38
  39 #define R_STRERROR_INIT_R() \
  40     char r_strerror_r[R_MAX_STRERROR_LEN_R]
  41
  42 #define R_STRERROR_R(val) \
  43     strerror_r(val,r_strerror_r,R_MAX_STRERROR_LEN_R)
  44
  45 /*****************/
  46 /*  time things  */
  47 /*****************/
  48 #define R_ASCTIME_INIT_R() \
  49     char r_asctime_r[26]
  50
  51 #define R_ASCTIME_R(val) \
  52     asctime_r(val,r_asctime_r)
  53
  54 #define R_CTIME_INIT_R() \
  55     char r_ctime_r[26]
  56
  57 #define R_CTIME_R(val) \
  58     ctime_r(val,r_ctime_r)
  59
  60 #define R_GMTIME_INIT_R() \
  61     struct tm r_gmtime_r
  62
  63 #define R_GMTIME_R(time) \
  64     gmtime_r(time,&r_gmtime_r)
  65
  66 #define R_LOCALTIME_INIT_R() \
  67    struct tm r_localtime_r
  68
  69 #define R_LOCALTIME_R(val) \
  70    localtime_r(val,&r_localtime_r)
  71
  72 /***********/
  73 /*  crypt  */
  74 /***********/
  75 #include <crypt.h>
  76 #define R_CRYPT_INIT_R() \
  77     CRYPTD r_cryptd_r; \
  78     bzero(&r_cryptd_r,sizeof(CRYPTD))
  79
  80 #define R_CRYPT_R(pass,salt) \
  81     crypt_r(pass,salt,&r_cryptd_r)
  82
  83 /**************/
  84 /*  pw stuff  */
  85 /**************/
  86 #define R_MAX_PW_LEN_R 1024
  87 /* The following must be after the last declaration, but */
  88 /* before the first bit of code...                       */
  89 #define R_GETPWNAM_INIT_R(pw_ptr) \
  90     struct passwd r_getpwnam_pw_r; \
  91     char r_getpwnam_line_r[R_MAX_PW_LEN_R]; \
  92     pw_ptr = &r_getpwnam_pw_r
  93
  94 #define R_GETPWNAM_R(name) \
  95     getpwnam_r(name,&r_getpwnam_pw_r,r_getpwnam_line_r,R_MAX_PW_LEN_R)
  96
  97 /*******************/
  98 /*  gethost stuff  */
  99 /*******************/
 100 #define R_GETHOSTBYADDR_INIT_R() \
 101     struct hostent r_gethostbyaddr_r; \
 102     struct hostent_data r_gethostbyaddr_data_r
 103
 104 #define R_GETHOSTBYADDR_R(addr,len,type,xptr_ent) \
 105     bzero(&r_gethostbyaddr_r,sizeof(struct hostent)); \
 106     bzero(&r_gethostbyaddr_data_r,sizeof(struct hostent_data)); \
 107     xptr_ent = &r_gethostbyaddr_r; \
 108     if (gethostbyaddr_r(addr,len,type, \
 109        &r_gethostbyaddr_r,&r_gethostbyaddr_data_r) == -1) { \
 110            xptr_ent = NULL; \
 111     }
 112
 113 #define R_GETHOSTBYNAME_INIT_R() \
 114     struct hostent r_gethostbyname_r; \
 115     struct hostent_data r_gethostbyname_data_r
 116
 117 #define R_GETHOSTBYNAME_R(name,xptr_ent) \
 118     bzero(&r_gethostbyname_r,sizeof(struct hostent)); \
 119     bzero(&r_gethostbyname_data_r,sizeof(struct hostent_data)); \
 120     xptr_ent = &r_gethostbyname_r; \
 121     if (gethostbyname_r(name, \
 122        &r_gethostbyname_r,&r_gethostbyname_data_r) == -1) { \
 123           xptr_ent = NULL; \
 124     }
 125
 126 #endif /* _LIBC_R_H */