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 YAZ_HAVE_XML2
  27 #include <libxml/parser.h>
  28 #endif
  29
  30 #if YAZ_HAVE_XSLT
  31 #include <libxslt/xslt.h>
  32 #endif
  33
  34 #if YAZ_HAVE_EXSLT
  35 #include <libexslt/exslt.h>
  36 #endif
  37
  38 static int yaz_init_flag = 0;
  39 #if YAZ_POSIX_THREADS
  40 static pthread_mutex_t yaz_init_mutex = PTHREAD_MUTEX_INITIALIZER;
  41 #endif
  42
  43 extern void yaz_log_init_globals(void);
  44 extern void yaz_log_deinit_globals(void);
  45
  46 void yaz_init_globals(void)
  47 {
  48     if (yaz_init_flag)
  49         return;
  50 #if YAZ_POSIX_THREADS
  51     pthread_mutex_lock(&yaz_init_mutex);
  52 #endif
  53     if (!yaz_init_flag)
  54     {
  55         yaz_log_init_globals();
  56 #if HAVE_GNUTLS_H
  57         gnutls_global_init();
  58 #endif
  59 #if YAZ_HAVE_XML2
  60         xmlInitParser();
  61 #endif
  62 #if YAZ_HAVE_XSLT
  63         xsltInit();
  64 #endif
  65 #if YAZ_HAVE_EXSLT
  66         exsltRegisterAll();
  67 #endif
  68         yaz_init_flag = 1; /* must be last, before unlocking */
  69     }
  70 #if YAZ_POSIX_THREADS
  71     pthread_mutex_unlock(&yaz_init_mutex);
  72 #endif
  73 }
  74
  75 void yaz_deinit_globals(void)
  76 {
  77     if (!yaz_init_flag)
  78         return;
  79 #if YAZ_POSIX_THREADS
  80     pthread_mutex_lock(&yaz_init_mutex);
  81 #endif
  82     if (yaz_init_flag)
  83     {
  84         yaz_log_deinit_globals();
  85 #if HAVE_GNUTLS_H
  86         gnutls_global_deinit();
  87 #endif
  88 #if YAZ_HAVE_XSLT
  89         xsltCleanupGlobals();
  90 #endif
  91 #if YAZ_HAVE_XML2
  92         xmlCleanupParser();
  93 #endif
  94         yaz_init_flag = 0;
  95     }
  96 #if YAZ_POSIX_THREADS
  97     pthread_mutex_unlock(&yaz_init_mutex);
  98 #endif
  99 }
 100
 101 /*
 102  * Local variables:
 103  * c-basic-offset: 4
 104  * c-file-style: "Stroustrup"
 105  * indent-tabs-mode: nil
 106  * End:
 107  * vim: shiftwidth=4 tabstop=8 expandtab
 108  */
 109