【比特币源码精读一】

/**

bitcoind.cpp    启动源码

*/

//source code

int main(int argc, char* argv[])

{

    SetupEnvironment();    //util.cpp

    // Connect bitcoind signal handlers

    noui_connect();

    return (AppInit(argc, argv) ? EXIT_SUCCESS : EXIT_FAILURE);

}

//代码测试

intmain() {

std::cout<<"Hello, World!"<

return0;

}

//文件路径 src/util.cpp

/**

* Server/client environment: argument handling, config file parsing,

* thread wrappers, startup time

*/

void SetupEnvironment()

{

#ifdef HAVE_MALLOPT_ARENA_MAX

    // glibc-specific: On 32-bit systems set the number of arenas to 1.

    // By default, since glibc 2.10, the C library will create up to two heap

    // arenas per core. This is known to cause excessive virtual address space

    // usage in our usage. Work around it by setting the maximum number of

    // arenas to 1.

    //内存分配区设置

    //Win32索引32位地址(4字节),X64索引64位地址(8字节)

    if (sizeof(void*) == 4) {

        mallopt(M_ARENA_MAX, 1);

    }

#endif

    // On most POSIX systems (e.g. Linux, but not BSD) the environment's locale

    // may be invalid, in which case the "C" locale is used as fallback.

    /**

    [michael@s132-148-91-102 ~]$ locale

   *LANG=en_US.UTF-8

   *LC_CTYPE="en_US.UTF-8"

   *LC_NUMERIC="en_US.UTF-8"

    *LC_TIME="en_US.UTF-8"

    *LC_COLLATE="en_US.UTF-8"

    *LC_MONETARY="en_US.UTF-8"

    *LC_MESSAGES="en_US.UTF-8"

    *LC_PAPER="en_US.UTF-8"

    *LC_NAME="en_US.UTF-8"

    *LC_ADDRESS="en_US.UTF-8"

    *LC_TELEPHONE="en_US.UTF-8"

    *LC_MEASUREMENT="en_US.UTF-8"

    *LC_IDENTIFICATION="en_US.UTF-8"

    *LC_ALL=

    */

#if !defined(WIN32) && !defined(MAC_OSX) && !defined(__FreeBSD__) && !defined(__OpenBSD__)

    try {

        std::locale(""); // Raises a runtime error if current locale is invalid

    } catch (const std::runtime_error&) {

        setenv("LC_ALL", "C", 1);

    }

#endif


    // The path locale is lazy initialized and to avoid deinitialization errors

    // in multithreading environments, it is set explicitly by the main thread.

    // A dummy locale is used to extract the internal default locale, used by

    // fs::path, which is then used to explicitly imbue the path.

    //文件系统的本地化设置

    std::locale loc = fs::path::imbue(std::locale::classic());

    fs::path::imbue(loc);

}


// src/noui.cpp // no ui connect

// #include// #includevoid noui_connect()

{

    // Connect bitcoind signal handlers

    uiInterface.ThreadSafeMessageBox.connect(noui_ThreadSafeMessageBox);

    uiInterface.ThreadSafeQuestion.connect(noui_ThreadSafeQuestion);

    uiInterface.InitMessage.connect(noui_InitMessage);

}

/**

* boost

* Boost provides free peer-reviewed portable C++ source libraries.

*/

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