/*M///////////////////////////////////////////////////////////////////////////////////////

//

// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.

//

// By downloading, copying, installing or using the software you agree to this license.

// If you do not agree to this license, do not download, install,

// copy or use the software.

//

//

// License Agreement

// For Open Source Computer Vision Library

//

// Copyright (C) 2000-2008, Intel Corporation, all rights reserved.

// Copyright (C) 2009, Willow Garage Inc., all rights reserved.

// Third party copyrights are property of their respective owners.

//

// Redistribution and use in source and binary forms, with or without modification,

// are permitted provided that the following conditions are met:

//

// * Redistribution's of source code must retain the above copyright notice,

// this list of conditions and the following disclaimer.

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// * Redistribution's in binary form must reproduce the above copyright notice,

// this list of conditions and the following disclaimer in the documentation

// and/or other materials provided with the distribution.

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// * The name of the copyright holders may not be used to endorse or promote products

// derived from this software without specific prior written permission.

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// This software is provided by the copyright holders and contributors "as is" and

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// In no event shall the Intel Corporation or contributors be liable for any direct,

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//M*/

#include "precomp.hpp"

#ifdef __QNX__

#include <unistd.h>

#include <sys/neutrino.h>

#include <sys/syspage.h>

#ifdef __aarch64__

#include <aarch64/syspage.h>

#endif

#endif

#include <opencv2/core/utils/trace.private.hpp>

#include <opencv2/core/utils/logger.hpp>

#include <opencv2/core/utils/tls.hpp>

#include <opencv2/core/utils/instrumentation.hpp>

#include <opencv2/core/utils/filesystem.private.hpp>

#include <opencv2/core/utils/fp_control_utils.hpp>

#include <opencv2/core/utils/fp_control.private.hpp>

namespace cv {

static void _initSystem()

{

#ifdef __ANDROID__

// https://github.com/opencv/opencv/issues/14906

// "ios_base::Init" object is not a part of Android's "iostream" header (in case of clang toolchain, NDK 20).

// Ref1: https://en.cppreference.com/w/cpp/io/ios_base/Init

// The header <iostream> behaves as if it defines (directly or indirectly) an instance of std::ios_base::Init with static storage duration

// Ref2: https://github.com/gcc-mirror/gcc/blob/gcc-8-branch/libstdc%2B%2B-v3/include/std/iostream#L73-L74

static std::ios_base::Init s_iostream_initializer;

#endif

}

static Mutex* __initialization_mutex = NULL;

Mutex& getInitializationMutex()

{

if (__initialization_mutex == NULL)

{

(void)_initSystem();

return *__initialization_mutex;

}

// force initialization (single-threaded environment)

Mutex* __initialization_mutex_initializer = &getInitializationMutex();

true

#else