src/init_globals.c

   1 /* This file is part of the YAZ toolkit.
   2  * Copyright (C) Index Data
   3  * See the file LICENSE for details.
   4  */
   5
   6 /**
   7  * \file init_globals.c
   8  * \brief Initialize global things
   9  */
  10
  11 #if HAVE_CONFIG_H
  12 #include <config.h>
  13 #endif
  14
  15 #include <yaz/log.h>
  16
  17 #if YAZ_POSIX_THREADS
  18 #include <pthread.h>
  19 #endif
  20 #include <errno.h>
  21
  22 #if HAVE_GNUTLS_H
  23 #include <gnutls/gnutls.h>
  24 #endif
  25
  26 #if HAVE_GCRYPT_H
  27 #include <gcrypt.h>
  28 #endif
  29
  30 #if YAZ_HAVE_XML2
  31 #include <libxml/parser.h>
  32 #endif
  33
  34 #if YAZ_HAVE_XSLT
  35 #include <libxslt/xslt.h>
  36 #endif
  37
  38 #if YAZ_HAVE_EXSLT
  39 #include <libexslt/exslt.h>
  40 #endif
  41
  42 static int yaz_init_flag = 0;
  43 #if YAZ_POSIX_THREADS
  44 static pthread_mutex_t yaz_init_mutex = PTHREAD_MUTEX_INITIALIZER;
  45 #endif
  46
  47 extern void yaz_log_init_globals(void);
  48
  49 #if HAVE_GCRYPT_H
  50 GCRY_THREAD_OPTION_PTHREAD_IMPL;
  51 #endif
  52
  53 void yaz_init_globals(void)
  54 {
  55     if (yaz_init_flag)
  56         return;
  57 #if YAZ_POSIX_THREADS
  58     pthread_mutex_lock(&yaz_init_mutex);
  59 #endif
  60     if (!yaz_init_flag)
  61     {
  62         yaz_log_init_globals();
  63 #if HAVE_GCRYPT_H
  64         /* POSIX threads locking. In case gnutls_global_init do not override */
  65         gcry_control(GCRYCTL_SET_THREAD_CBS, &gcry_threads_pthread);
  66 #endif
  67 #if HAVE_GNUTLS_H
  68         gnutls_global_init();
  69 #endif
  70 #if HAVE_GCRYPT_H
  71         /* most likely, GnuTLS has already initialized libgcrypt */
  72         if (gcry_control(GCRYCTL_ANY_INITIALIZATION_P) == 0)
  73         {
  74             gcry_control(GCRYCTL_INITIALIZATION_FINISHED, NULL, 0);
  75         }
  76 #endif
  77 #if YAZ_HAVE_XML2
  78         xmlInitParser();
  79 #endif
  80 #if YAZ_HAVE_XSLT
  81         xsltInit();
  82 #endif
  83 #if YAZ_HAVE_EXSLT
  84         exsltRegisterAll();
  85 #endif
  86         yaz_init_flag = 1; /* must be last, before unlocking */
  87     }
  88 #if YAZ_POSIX_THREADS
  89     pthread_mutex_unlock(&yaz_init_mutex);
  90 #endif
  91 }
  92
  93 void yaz_deinit_globals(void)
  94 {
  95     if (!yaz_init_flag)
  96         return;
  97 #if YAZ_POSIX_THREADS
  98     pthread_mutex_lock(&yaz_init_mutex);
  99 #endif
 100     if (yaz_init_flag)
 101     {
 102         yaz_log_init_file(0);
 103 #if HAVE_GNUTLS_H
 104         gnutls_global_deinit();
 105 #endif
 106 #if YAZ_HAVE_XSLT
 107         xsltCleanupGlobals();
 108 #endif
 109 #if YAZ_HAVE_XML2
 110         xmlCleanupParser();
 111 #endif
 112         yaz_init_flag = 0;
 113     }
 114 #if YAZ_POSIX_THREADS
 115     pthread_mutex_unlock(&yaz_init_mutex);
 116 #endif
 117 }
 118
 119 /*
 120  * Local variables:
 121  * c-basic-offset: 4
 122  * c-file-style: "Stroustrup"
 123  * indent-tabs-mode: nil
 124  * End:
 125  * vim: shiftwidth=4 tabstop=8 expandtab
 126  */
 127