void main_thread_handler (gpointer user_data) {
PyNet_Args *pn_args=(PyNet_Args *)user_data;
MonoMethod *init;
MonoImage *pr_image;
MonoClass *pythonengine;
MonoObject *exception = NULL;
MonoObject *init_result;
#ifndef _WIN32
// Get the filename of the python shared object and set
// LD_LIBRARY_PATH so Mono can find it.
Dl_info dlinfo = {0};
if (0 != dladdr(&Py_Initialize, &dlinfo)) {
char* fname = alloca(strlen(dlinfo.dli_fname) + 1);
strcpy(fname, dlinfo.dli_fname);
char* py_libdir = dirname(fname);
char* ld_library_path = getenv("LD_LIBRARY_PATH");
if (NULL == ld_library_path) {
setenv("LD_LIBRARY_PATH", py_libdir, 1);
} else {
char* new_ld_library_path = alloca(strlen(py_libdir)
+ strlen(ld_library_path)
+ 2);
strcpy(new_ld_library_path, py_libdir);
strcat(new_ld_library_path, ":");
strcat(new_ld_library_path, ld_library_path);
setenv("LD_LIBRARY_PATH", py_libdir, 1);
}
}
//get python path system variable
PyObject* syspath = PySys_GetObject("path");
char* runtime_full_path = (char*) malloc(1024);
const char* slash = "/";
int found = 0;
int ii = 0;
for (ii = 0; ii < PyList_Size(syspath); ++ii) {
#if PY_MAJOR_VERSION > 2
Py_ssize_t wlen;
wchar_t *wstr = PyUnicode_AsWideCharString(PyList_GetItem(syspath, ii), &wlen);
char* pydir = (char*)malloc(wlen + 1);
size_t mblen = wcstombs(pydir, wstr, wlen + 1);
if (mblen > wlen)
pydir[wlen] = '\0';
PyMem_Free(wstr);
#else
const char* pydir = PyString_AsString(PyList_GetItem(syspath, ii));
#endif
char* curdir = (char*) malloc(1024);
strncpy(curdir, strlen(pydir) > 0 ? pydir : ".", 1024);
strncat(curdir, slash, 1024);
#if PY_MAJOR_VERSION > 2
free(pydir);
#endif
//look in this directory for the pn_args->pr_file
DIR* dirp = opendir(curdir);
if (dirp != NULL) {
struct dirent *dp;
while ((dp = readdir(dirp)) != NULL) {
if (strcmp(dp->d_name, pn_args->pr_file) == 0) {
strcpy(runtime_full_path, curdir);
strcat(runtime_full_path, pn_args->pr_file);
found = 1;
break;
}
}
closedir(dirp);
}
free(curdir);
if (found) {
pn_args->pr_file = runtime_full_path;
break;
}
}
if (!found) {
fprintf(stderr, "Could not find assembly %s. \n", pn_args->pr_file);
return;
}
#endif
pn_args->pr_assm = mono_domain_assembly_open(pn_args->domain, pn_args->pr_file);
if (!pn_args->pr_assm) {
pn_args->error = "Unable to load assembly";
return;
}
#ifndef _WIN32
free(runtime_full_path);
#endif
pr_image = mono_assembly_get_image(pn_args->pr_assm);
if (!pr_image) {
pn_args->error = "Unable to get image";
return;
}
pythonengine = mono_class_from_name(pr_image, "Python.Runtime", "PythonEngine");
if (!pythonengine) {
pn_args->error = "Unable to load class PythonEngine from Python.Runtime";
return;
}
init = getMethodFromClass(pythonengine, pn_args->init_name);
if (!init) {
pn_args->error = "Unable to fetch Init method from PythonEngine";
return;
}
pn_args->shutdown = getMethodFromClass(pythonengine, pn_args->shutdown_name);
if (!pn_args->shutdown) {
pn_args->error = "Unable to fetch shutdown method from PythonEngine";
return;
}
init_result = mono_runtime_invoke(init, NULL, NULL, &exception);
if (exception) {
pn_args->error = PyNet_ExceptionToString(exception);
return;
}
#if PY_MAJOR_VERSION >= 3
if (NULL != init_result)
pn_args->module = *(PyObject**)mono_object_unbox(init_result);
#endif
}
void main_thread_handler (gpointer user_data) {
PyNet_Args *pn_args=(PyNet_Args *)user_data;
MonoMethod *init;
MonoImage *pr_image;
MonoClass *pythonengine;
MonoObject *exception = NULL;
#ifndef _WIN32
//get python path system variable
PyObject* syspath = PySys_GetObject("path");
char* runtime_full_path = (char*) malloc(1024);
const char* slash = "/";
int found = 0;
int ii = 0;
for (ii = 0; ii < PyList_Size(syspath); ++ii) {
const char* pydir = PyString_AsString(PyList_GetItem(syspath, ii));
char* curdir = (char*) malloc(1024);
strncpy(curdir, strlen(pydir) > 0 ? pydir : ".", 1024);
strncat(curdir, slash, 1024);
//look in this directory for the pn_args->pr_file
DIR* dirp = opendir(curdir);
if (dirp != NULL) {
struct dirent *dp;
while ((dp = readdir(dirp)) != NULL) {
if (strcmp(dp->d_name, pn_args->pr_file) == 0) {
strcpy(runtime_full_path, curdir);
strcat(runtime_full_path, pn_args->pr_file);
found = 1;
break;
}
}
closedir(dirp);
}
free(curdir);
if (found) {
pn_args->pr_file = runtime_full_path;
break;
}
}
if (!found) {
fprintf(stderr, "Could not find assembly %s. \n", pn_args->pr_file);
return;
}
#endif
pn_args->pr_assm = mono_domain_assembly_open(pn_args->domain, pn_args->pr_file);
if (!pn_args->pr_assm) {
pn_args->error = "Unable to load assembly";
return;
}
#ifndef _WIN32
free(runtime_full_path);
#endif
pr_image = mono_assembly_get_image(pn_args->pr_assm);
if (!pr_image) {
pn_args->error = "Unable to get image";
return;
}
pythonengine = mono_class_from_name(pr_image, "Python.Runtime", "PythonEngine");
if (!pythonengine) {
pn_args->error = "Unable to load class PythonEngine from Python.Runtime";
return;
}
init = getMethodFromClass(pythonengine, pn_args->init_name);
if (!init) {
pn_args->error = "Unable to fetch Init method from PythonEngine";
return;
}
pn_args->shutdown = getMethodFromClass(pythonengine, pn_args->shutdown_name);
if (!pn_args->shutdown) {
pn_args->error = "Unable to fetch shutdown method from PythonEngine";
return;
}
mono_runtime_invoke(init, NULL, NULL, &exception);
if (exception) {
pn_args->error = PyNet_ExceptionToString(exception);
return;
}
}
