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