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150 lines
3.5 KiB
C
150 lines
3.5 KiB
C
/*
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This file is part of libmicrohttpd
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Copyright (C) 2007-2018 Daniel Pittman and Christian Grothoff
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file lib/init.c
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* @brief initialization routines
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* @author Christian Grothoff
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*/
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#include "internal.h"
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#include "init.h"
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#ifndef _AUTOINIT_FUNCS_ARE_SUPPORTED
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/**
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* Track global initialisation
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*/
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volatile unsigned int global_init_count = 0;
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#ifdef MHD_MUTEX_STATIC_DEFN_INIT_
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/**
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* Global initialisation mutex
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*/
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MHD_MUTEX_STATIC_DEFN_INIT_ (global_init_mutex_);
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#endif /* MHD_MUTEX_STATIC_DEFN_INIT_ */
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#endif
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#if defined(_WIN32) && ! defined(__CYGWIN__)
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/**
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* Track initialization of winsock
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*/
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static int mhd_winsock_inited_ = 0;
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#endif
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/**
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* Default implementation of the panic function,
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* prints an error message and aborts.
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*
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* @param cls unused
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* @param file name of the file with the problem
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* @param line line number with the problem
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* @param reason error message with details
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*/
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static void
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mhd_panic_std (void *cls,
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const char *file,
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unsigned int line,
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const char *reason)
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{
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(void) cls; /* Mute compiler warning. */
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#ifdef HAVE_MESSAGES
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fprintf (stderr,
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_ ("Fatal error in GNU libmicrohttpd %s:%u: %s\n"),
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file,
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line,
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reason);
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#else /* ! HAVE_MESSAGES */
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(void) file; /* Mute compiler warning. */
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(void) line; /* Mute compiler warning. */
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(void) reason; /* Mute compiler warning. */
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#endif
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abort ();
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}
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/**
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* Globally initialize library.
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*/
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void
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MHD_init (void)
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{
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#if defined(_WIN32) && ! defined(__CYGWIN__)
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WSADATA wsd;
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#endif /* _WIN32 && ! __CYGWIN__ */
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if (NULL == mhd_panic)
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mhd_panic = &mhd_panic_std;
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#if defined(_WIN32) && ! defined(__CYGWIN__)
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if (0 != WSAStartup (MAKEWORD (2, 2),
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&wsd))
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MHD_PANIC (_ ("Failed to initialize winsock.\n"));
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mhd_winsock_inited_ = 1;
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if ( (2 != LOBYTE (wsd.wVersion)) &&
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(2 != HIBYTE (wsd.wVersion)) )
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MHD_PANIC (_ ("Winsock version 2.2 is not available.\n"));
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#endif
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MHD_monotonic_sec_counter_init ();
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#ifdef HAVE_FREEBSD_SENDFILE
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MHD_conn_init_static_ ();
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#endif /* HAVE_FREEBSD_SENDFILE */
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}
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/**
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* Global teardown work.
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*/
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void
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MHD_fini (void)
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{
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#if defined(_WIN32) && ! defined(__CYGWIN__)
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if (mhd_winsock_inited_)
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WSACleanup ();
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#endif
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MHD_monotonic_sec_counter_finish ();
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}
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#ifdef _AUTOINIT_FUNCS_ARE_SUPPORTED
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_SET_INIT_AND_DEINIT_FUNCS (MHD_init, MHD_fini);
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#else
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/**
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* Check whether global initialisation was performed
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* and call initialiser if necessary.
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*/
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void
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MHD_check_global_init_ (void)
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{
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#ifdef MHD_MUTEX_STATIC_DEFN_INIT_
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MHD_mutex_lock_chk_ (&global_init_mutex_);
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#endif /* MHD_MUTEX_STATIC_DEFN_INIT_ */
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if (0 == global_init_count++)
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MHD_init ();
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#ifdef MHD_MUTEX_STATIC_DEFN_INIT_
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MHD_mutex_unlock_chk_ (&global_init_mutex_);
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#endif /* MHD_MUTEX_STATIC_DEFN_INIT_ */
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}
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#endif
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