C++ boost.python折腾笔记

为了让当年研究生时写的图像处理系统重出江湖起到更大的作用,应研究生导师的意见,对原有的c++框架做了python扩展处理,为了避免遗忘,备注如下:

一、boost 编译

下载boost源码,这里使用boost 1.67,解压到目录,进行编译

  • 下载C++的boost库:http://www.boost.org/
  • 安装Anaconda3-5.1.0-Windows-x86_64 默认路径安装
  • 解压boost文件,在其目录中执行.\bootstrap.bat,会生成编译器b2.exebjam.exe
  • 修改project-config.jam文件,加入python的版本及路径(不加入则会默认python2):
  • import option ;
  • using msvc ;

    option.set keep-going : false ;

    using python
    : 3.6 # Version
    : C:\\ProgramData\\Anaconda3\\python.exe # Python Path
    : C:\\ProgramData\\Anaconda3\\include # include path
    : C:\\ProgramData\\Anaconda3\\libs # lib path(s)
    ;

  • 执行命令(我这里是vs 2010 故为msvc-10.0)`.\bjam.exe toolset=msvc-10.0 --with-python threading=multi link=shared address-model=64,在 stage\lib 目录中会生成 boost_numpy3-*boost_python3-* 字样的文件
  • 编译过程遇到了以下问题
  • (1)缺少头文件 无法打开包括文件:“inttypes.h
  • #include<inttypes.h>

    编译时,找不到此文件,所以无法打开

    方法:

    1. 获取此文件

    2. 放置此文件到目录:

    VS2008,C:\Program Files\Microsoft Visual Studio 9.0\VC\include
    VS2010,C:\Program Files\Microsoft Visual Studio 10.0\VC\include

  • (2)boost 1.67的bug   找不到库
  • C:\Boost\include\boost-1_67\boost\python\numpy\config.hpp
  • 修改这一段
  • // enable automatic library variant selection ------------------------------//

    #if !defined(BOOST_NUMPY_SOURCE) && !defined(BOOST_ALL_NO_LIB) && !defined(BOOST_NUMPY_NO_LIB)
    //
    // Set the name of our library, this will get undef'ed by auto_link.hpp
    // once it's done with it:
    //
    //#define BOOST_LIB_NAME boost_numpy##PY_MAJOR_VERSION##PY_MINOR_VERSION
    #define _BOOST_PYTHON_CONCAT(N, M, m) N ## M ## m
    #define BOOST_PYTHON_CONCAT(N, M, m) _BOOST_PYTHON_CONCAT(N, M, m)
    #define BOOST_LIB_NAME BOOST_PYTHON_CONCAT(boost_numpy, PY_MAJOR_VERSION, PY_MINOR_VERSION)
    //
    // If we're importing code from a dll, then tell auto_link.hpp about it:
    //
    #ifdef BOOST_NUMPY_DYNAMIC_LIB
    # define BOOST_DYN_LINK
    #endif
    //
    // And include the header that does the work:
    //
    #include <boost/config/auto_link.hpp>
    #endif // auto-linking disabled

    #undef BOOST_PYTHON_CONCAT
    #undef _BOOST_PYTHON_CONCAT

    #define NPY_NO_DEPRECATED_API NPY_1_7_API_VERSION

    #endif // CONFIG_NUMPY20170215_H_

文件C:\Boost\include\boost-1_67\boost\python\detail\config.hpp

#define _BOOST_PYTHON_CONCAT(N, M, m) N ## M ## m
#define BOOST_PYTHON_CONCAT(N, M, m) _BOOST_PYTHON_CONCAT(N, M, m)
#define BOOST_LIB_NAME BOOST_PYTHON_CONCAT(boost_python, PY_MAJOR_VERSION, PY_MINOR_VERSION)
//
// If we're importing code from a dll, then tell auto_link.hpp about it:
//
#ifdef BOOST_PYTHON_DYNAMIC_LIB
# define BOOST_DYN_LINK
#endif
//
// And include the header that does the work:
//
#include <boost/config/auto_link.hpp>
#endif // auto-linking disabled

#undef BOOST_PYTHON_CONCAT
#undef _BOOST_PYTHON_CONCAT

#ifndef BOOST_PYTHON_NO_PY_SIGNATURES
#define BOOST_PYTHON_SUPPORTS_PY_SIGNATURES // enables smooth transition
#endif

#if !defined(BOOST_ATTRIBUTE_UNUSED) && defined(__GNUC__) && (__GNUC__ >= 4)
# define BOOST_ATTRIBUTE_UNUSED __attribute__((unused))
#endif

二、在VS2010中引用

ProjectProject PropertyConfiguration PropertiesVC++ Directories 中,Library Directories 中需要包含C:\Boost\lib;C:\ProgramData\Anaconda3\libs;$(LibraryPath);Include Directories 中需要包含C:\Boost\include\boost-1_67;C:\ProgramData\Anaconda3\include;$(IncludePath)

另外要选择MD多线程。

三、在C++中如何调用python3的脚本

样例代码如下:

class ECT_PROCESSOR
{
public:
ECT_PROCESSOR()
{
Param1="";
Param2="";
Param3="";
Param4="";
Param5="";
Param6="";
Param7="";
Param8="";
Param9="";
Param10="";
dimx=0;
dimy=0;
dimz=0; }
~ECT_PROCESSOR()
{ }
void SetModel(Model * in_p_model)
{
p_model=in_p_model;
} bool SetSrcValue(int x, int y,int z,int tag, short val)
{ }
short GetSrcValue(int x, int y,int z,int tag)
{ } bool SetMaskValue(int x, int y,int z, unsigned char val)
{ }
unsigned char GetMaskValue(int x, int y,int z)
{ }
std::string Param1;
std::string Param2;
std::string Param3;
std::string Param4;
std::string Param5;
std::string Param6;
std::string Param7;
std::string Param8;
std::string Param9;
std::string Param10;
int dimx;
int dimy;
int dimz; private:
Model *p_model;
}; ECT_PROCESSOR* GetECT_PROCESSORInstance()
{
static ECT_PROCESSOR* the_ECT_PROCESSOR = NULL;
if (!the_ECT_PROCESSOR)
{
the_ECT_PROCESSOR = new ECT_PROCESSOR();
the_ECT_PROCESSOR->SetModel(Model::GetModelInstance());
}
return the_ECT_PROCESSOR;
} // export c++ function and class to python
BOOST_PYTHON_MODULE(MyEngine)
{
using namespace boost::python;
def("GetECT_PROCESSORInstance", GetECT_PROCESSORInstance,
return_value_policy< reference_existing_object >());
class_<ECT_PROCESSOR>("ECT_PROCESSOR", "ECT_PROCESSOR")
.def("SetSrcValue", &ECT_PROCESSOR::SetSrcValue,
args("x", "y","z","tag""val"))
.def("GetSrcValue", &ECT_PROCESSOR::GetSrcValue,
args("x","y","z","tag"))
.def("SetMaskValue", &ECT_PROCESSOR::SetMaskValue,
args("x","y","z","val"))
.def("GetMaskValue", &ECT_PROCESSOR::GetMaskValue,
args("x", "y","z"))
.def_readonly("Param1", &ECT_PROCESSOR::Param1,"Param1")
.def_readonly("Param2", &ECT_PROCESSOR::Param2,"Param2")
.def_readonly("Param3", &ECT_PROCESSOR::Param3,"Param3")
.def_readonly("Param4", &ECT_PROCESSOR::Param4,"Param4")
.def_readonly("Param5", &ECT_PROCESSOR::Param5,"Param5")
.def_readonly("Param6", &ECT_PROCESSOR::Param6,"Param6")
.def_readonly("Param7", &ECT_PROCESSOR::Param7,"Param7")
.def_readonly("Param8", &ECT_PROCESSOR::Param8,"Param8")
.def_readonly("Param9", &ECT_PROCESSOR::Param9,"Param9")
.def_readonly("Param10", &ECT_PROCESSOR::Param10,"Param10")
.def_readonly("dimx", &ECT_PROCESSOR::dimx,"dimx")
.def_readonly("dimy", &ECT_PROCESSOR::dimy,"dimy")
.def_readonly("dimz", &ECT_PROCESSOR::dimz,"dimz")
;
}
bool InitPython()
{
Py_Initialize(); if(!Py_IsInitialized())
{
return false;
}
return true;
}
int Controller::ExcutePythonScript_ECT(CString sInFilePath,CString sInFileName,CString sInParam1,CString sInParam2,CString sInParam3,CString sInParam4,CString sInParam5,
CString sInParam6,CString sInParam7,CString sInParam8,CString sInParam9,CString sInParam10,CString *pOutMsg)
{
int tmp_ectindex=model->GetActiveEctIndex();
if(tmp_ectindex<0)
{
//报错
OutputLogB("Log.log", __FILE__, __LINE__, "model->GetActiveEctIndex<0");
return -1;
}
try
{
CString sModuleName;
std::string stdModuleName;
std::string stdModulePath(sInFilePath.GetBuffer());
int pos = sInFileName.ReverseFind('.');
if ( pos > 0 )
{
sModuleName = sInFileName.Left(pos);
stdModuleName=sModuleName.GetBuffer(0);
}
else
{
stdModuleName=sInFileName.GetBuffer(0);
} std::ifstream fin;
char sFullPath[256]={0};
snprintf(sFullPath,sizeof(sFullPath),"%s\\%s",stdModulePath.c_str(),sInFileName.GetBuffer());
OutputLogB("Log.log", __FILE__, __LINE__, "fin.open(%s)",sFullPath);
fin.open(sFullPath);
std::string str;
std::string str_in = "";
while (getline(fin, str)) //一行一行地读到字符串str_in中
{
str_in = str_in + str + '\n';
}
fin.close(); using namespace boost::python; if (PyImport_AppendInittab(const_cast<char*>("MyEngine"),
#if PY_VERSION_HEX >= 0x03000000
PyInit_MyEngine
#else
initMyEngine
#endif
) == -1)
{
OutputLogB("Log.log", __FILE__, __LINE__,"Failed to add embedded_hello to the interpreter's builtin modules");
return -2;
} //PyImport_AppendInittab( stdModuleName.c_str(), &PyInit_MyEngine );
if(!InitPython())
{
return -1;
}
PyInit_MyEngine(); // init MyEngine Module // Add current path to sys.path. You have to
// do this in linux. While in Windows,
// current path is already in sys.path. ECT_PROCESSOR* pECT_PROCESSOR = GetECT_PROCESSORInstance();
pECT_PROCESSOR->Param1=sInParam1.GetBuffer();
pECT_PROCESSOR->Param2=sInParam2.GetBuffer();
pECT_PROCESSOR->Param3=sInParam3.GetBuffer();
pECT_PROCESSOR->Param4=sInParam4.GetBuffer();
pECT_PROCESSOR->Param5=sInParam5.GetBuffer();
pECT_PROCESSOR->Param6=sInParam6.GetBuffer();
pECT_PROCESSOR->Param7=sInParam7.GetBuffer();
pECT_PROCESSOR->Param8=sInParam8.GetBuffer();
pECT_PROCESSOR->Param9=sInParam9.GetBuffer();
pECT_PROCESSOR->Param10=sInParam10.GetBuffer(); object main_module = import( "__main__" );
object main_namespace = main_module.attr( "__dict__" ); object ignored = exec(
"import sys\n"
"sys.path.append('.')\n", main_namespace ); int dimxyz[3]={0};
model->GetActiveMask()->GetDimensions(dimxyz);
pECT_PROCESSOR->dimx=dimxyz[0];
pECT_PROCESSOR->dimy=dimxyz[0];
pECT_PROCESSOR->dimz=dimxyz[0]; object ignored2 = exec(str_in.c_str(),
main_namespace); return 0; }
catch (boost::python::error_already_set const &)
{
std::string perror_str = parse_python_exception();
pOutMsg->SetString(perror_str.c_str());
PyErr_Print();
PyErr_Clear();
//delete _module;
//_module = NULL;
// Py_Finalize();
return -2;
} }

  

 
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