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unbound/pythonmod/pythonmod.c
W.C.A. Wijngaards ff653a7ef8 Call module init init again, and new function startup and destartup. 
NULL can be used if the function is not used. Open shared ports during
reload. Deinit is called during reload.
2024-07-01 16:10:07 +02:00

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/*
* pythonmod.c: unbound module C wrapper
*
* Copyright (c) 2009, Zdenek Vasicek (vasicek AT fit.vutbr.cz)
* Marek Vavrusa (xvavru00 AT stud.fit.vutbr.cz)
*
* This software is open source.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* * Redistributions 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.
*
* * Neither the name of the organization nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
* Python module for unbound. Calls python script.
*/
/* ignore the varargs unused warning from SWIGs internal vararg support */
#ifdef __GNUC__
#pragma GCC diagnostic ignored "-Wunused-parameter"
#ifndef __clang__
#pragma GCC diagnostic ignored "-Wunused-but-set-variable"
#endif
#endif
#include "config.h"
#include "sldns/sbuffer.h"
#undef _POSIX_C_SOURCE
#undef _XOPEN_SOURCE
#include <Python.h>
#include "pythonmod/pythonmod.h"
#include "util/module.h"
#include "util/config_file.h"
#include "pythonmod_utils.h"
#ifdef S_SPLINT_S
typedef struct PyObject PyObject;
typedef struct PyThreadState PyThreadState;
typedef void* PyGILState_STATE;
#endif
/**
* counter for python module instances
* incremented by pythonmod_init(...)
*/
int py_mod_count = 0;
/** Python main thread */
PyThreadState* mainthr;
/**
* Global state for the module.
*/
struct pythonmod_env {
/** Python script filename. */
const char* fname;
/** Python module. */
PyObject* module;
/** Module init function */
PyObject* func_init;
/** Module deinit function */
PyObject* func_deinit;
/** Module operate function */
PyObject* func_operate;
/** Module super_inform function */
PyObject* func_inform;
/** Python dictionary. */
PyObject* dict;
/** Module data. */
PyObject* data;
/** Module qstate. */
struct module_qstate* qstate;
};
/**
* Per query state for the iterator module.
*/
struct pythonmod_qstate {
/** Module per query data. */
PyObject* data;
};
/* The dict from __main__ could have remnants from a previous script
* invocation, in a multi python module setup. Usually this is fine since newer
* scripts will update their values. The obvious erroneous case is when mixing
* python scripts that make use of both 'init' and 'init_standard'. This
* results in 'init_standard' to persist on following scripts that don't use it
* (thus not replacing it). This is also problematic in case where a script
* does not define a required function but a previously loaded script did. The
* current solution is to make sure to clean offensive remnants that influence
* further parsing of the individual scripts.
*/
static void
clean_python_function_objects(PyObject* dict) {
const char* function_names[] = {
"init",
"init_standard",
"deinit",
"operate",
"inform_super"
};
size_t i;
for(i=0; i<sizeof(function_names)/sizeof(function_names[0]); i++) {
if(PyDict_GetItemString(dict, function_names[i]) != NULL) {
PyDict_DelItemString(dict, function_names[i]);
}
}
};
/* Generated */
#ifndef S_SPLINT_S
#include "pythonmod/interface.h"
#endif
/** log python error */
static void
log_py_err(void)
{
char *result = NULL;
const char* iomod = "cStringIO";
PyObject *modStringIO = NULL;
PyObject *modTB = NULL;
PyObject *obFuncStringIO = NULL;
PyObject *obStringIO = NULL;
PyObject *obFuncTB = NULL;
PyObject *argsTB = NULL;
PyObject *obResult = NULL;
PyObject *ascstr = NULL;
PyObject *exc_typ, *exc_val, *exc_tb;
/* Fetch the error state now before we cruch it */
/* exc val contains the error message
* exc tb contains stack traceback and other info. */
PyErr_Fetch(&exc_typ, &exc_val, &exc_tb);
PyErr_NormalizeException(&exc_typ, &exc_val, &exc_tb);
/* Import the modules we need - cStringIO and traceback */
modStringIO = PyImport_ImportModule("cStringIO");
if (modStringIO==NULL) {
/* python 1.4 and before */
modStringIO = PyImport_ImportModule("StringIO");
iomod = "StringIO";
}
if (modStringIO==NULL) {
/* python 3 */
modStringIO = PyImport_ImportModule("io");
iomod = "io";
}
if (modStringIO==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot ImportModule cStringIO or StringIO or io");
goto cleanup;
}
modTB = PyImport_ImportModule("traceback");
if (modTB==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot ImportModule traceback");
goto cleanup;
}
/* Construct a cStringIO object */
obFuncStringIO = PyObject_GetAttrString(modStringIO, "StringIO");
if (obFuncStringIO==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot GetAttrString %s.StringIO", iomod);
goto cleanup;
}
obStringIO = PyObject_CallObject(obFuncStringIO, NULL);
if (obStringIO==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot call %s.StringIO()", iomod);
goto cleanup;
}
/* Get the traceback.print_exception function, and call it. */
obFuncTB = PyObject_GetAttrString(modTB, "print_exception");
if (obFuncTB==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot GetAttrString traceback.print_exception");
goto cleanup;
}
argsTB = Py_BuildValue("OOOOO", (exc_typ ? exc_typ : Py_None),
(exc_val ? exc_val : Py_None), (exc_tb ? exc_tb : Py_None),
Py_None, obStringIO);
if (argsTB==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot BuildValue for print_exception");
goto cleanup;
}
obResult = PyObject_CallObject(obFuncTB, argsTB);
if (obResult==NULL) {
PyErr_Print();
log_err("pythonmod: cannot print exception, "
"call traceback.print_exception() failed");
goto cleanup;
}
/* Now call the getvalue() method in the StringIO instance */
Py_DECREF(obFuncStringIO);
obFuncStringIO = PyObject_GetAttrString(obStringIO, "getvalue");
if (obFuncStringIO==NULL) {
log_err("pythonmod: cannot print exception, "
"cannot GetAttrString StringIO.getvalue");
goto cleanup;
}
Py_DECREF(obResult);
obResult = PyObject_CallObject(obFuncStringIO, NULL);
if (obResult==NULL) {
log_err("pythonmod: cannot print exception, "
"call StringIO.getvalue() failed");
goto cleanup;
}
/* And it should be a string all ready to go - duplicate it. */
if (!PyString_Check(obResult) && !PyUnicode_Check(obResult)) {
log_err("pythonmod: cannot print exception, "
"StringIO.getvalue() result did not String_Check"
" or Unicode_Check");
goto cleanup;
}
if(PyString_Check(obResult)) {
result = PyString_AsString(obResult);
} else {
ascstr = PyUnicode_AsASCIIString(obResult);
result = PyBytes_AsString(ascstr);
}
log_err("pythonmod: python error: %s", result);
cleanup:
Py_XDECREF(modStringIO);
Py_XDECREF(modTB);
Py_XDECREF(obFuncStringIO);
Py_XDECREF(obStringIO);
Py_XDECREF(obFuncTB);
Py_XDECREF(argsTB);
Py_XDECREF(obResult);
Py_XDECREF(ascstr);
/* clear the exception, by not restoring it */
/* Restore the exception state */
/* PyErr_Restore(exc_typ, exc_val, exc_tb); */
/* when using PyErr_Restore there is no need to Py_XDECREF for
* these 3 pointers. */
Py_XDECREF(exc_typ);
Py_XDECREF(exc_val);
Py_XDECREF(exc_tb);
}
/* we only want to unwind Python once at exit */
static void
pythonmod_atexit(void)
{
log_assert(py_mod_count == 0);
log_assert(mainthr != NULL);
PyEval_RestoreThread(mainthr);
Py_Finalize();
}
int pythonmod_init(struct module_env* env, int id)
{
int py_mod_idx = py_mod_count++;
/* Initialize module */
FILE* script_py = NULL;
PyObject* py_init_arg = NULL, *res = NULL, *fname = NULL;
PyGILState_STATE gil;
int init_standard = 1, i = 0;
#if PY_MAJOR_VERSION < 3
PyObject* PyFileObject = NULL;
#endif
struct config_strlist* cfg_item = env->cfg->python_script;
struct pythonmod_env* pe = (struct pythonmod_env*)calloc(1, sizeof(struct pythonmod_env));
if (!pe)
{
log_err("pythonmod: malloc failure");
return 0;
}
env->modinfo[id] = (void*) pe;
/* Initialize module */
pe->fname=NULL; i = 0;
while (cfg_item!=NULL) {
if (py_mod_idx==i++) {
pe->fname=cfg_item->str;
break;
}
cfg_item = cfg_item->next;
}
if(pe->fname==NULL || pe->fname[0]==0) {
log_err("pythonmod[%d]: no script given.", py_mod_idx);
return 0;
}
/* Initialize Python libraries */
if (py_mod_count==1 && !Py_IsInitialized())
{
#if PY_VERSION_HEX >= 0x03080000
PyStatus status;
PyPreConfig preconfig;
PyConfig config;
#endif
#if PY_MAJOR_VERSION >= 3
wchar_t progname[8];
mbstowcs(progname, "unbound", 8);
#else
char *progname = "unbound";
#endif
#if PY_VERSION_HEX < 0x03080000
Py_SetProgramName(progname);
#else
/* Python must be preinitialized, before the PyImport_AppendInittab
* call. */
PyPreConfig_InitPythonConfig(&preconfig);
status = Py_PreInitialize(&preconfig);
if(PyStatus_Exception(status)) {
log_err("python exception in Py_PreInitialize: %s%s%s",
(status.func?status.func:""), (status.func?": ":""),
(status.err_msg?status.err_msg:""));
return 0;
}
#endif
#if PY_MAJOR_VERSION >= 3
PyImport_AppendInittab(SWIG_name, (void*)SWIG_init);
#endif
#if PY_VERSION_HEX < 0x03080000
Py_NoSiteFlag = 1;
Py_Initialize();
#else
PyConfig_InitPythonConfig(&config);
status = PyConfig_SetString(&config, &config.program_name, progname);
if(PyStatus_Exception(status)) {
log_err("python exception in PyConfig_SetString(.. program_name ..): %s%s%s",
(status.func?status.func:""), (status.func?": ":""),
(status.err_msg?status.err_msg:""));
PyConfig_Clear(&config);
return 0;
}
config.site_import = 0;
status = Py_InitializeFromConfig(&config);
if(PyStatus_Exception(status)) {
log_err("python exception in Py_InitializeFromConfig: %s%s%s",
(status.func?status.func:""), (status.func?": ":""),
(status.err_msg?status.err_msg:""));
PyConfig_Clear(&config);
return 0;
}
PyConfig_Clear(&config);
#endif
#if PY_MAJOR_VERSION <= 2 || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION <= 6)
/* initthreads only for python 3.6 and older */
PyEval_InitThreads();
#endif
SWIG_init();
mainthr = PyEval_SaveThread();
/* register callback to unwind Python at exit */
atexit(pythonmod_atexit);
}
gil = PyGILState_Ensure();
if (py_mod_count==1) {
/* Initialize Python */
if(PyRun_SimpleString("import sys \n") < 0 ) {
log_err("pythonmod: cannot initialize core module: unboundmodule.py");
goto python_init_fail;
}
PyRun_SimpleString("sys.path.append('.') \n");
PyRun_SimpleString("sys.path.append('"RUN_DIR"') \n");
PyRun_SimpleString("sys.path.append('"SHARE_DIR"') \n");
if(env->cfg->directory && env->cfg->directory[0]) {
char wdir[1524];
snprintf(wdir, sizeof(wdir), "sys.path.append('%s') \n",
env->cfg->directory);
PyRun_SimpleString(wdir);
}
if(PyRun_SimpleString("import site\n") < 0) {
log_err("pythonmod: cannot initialize core module: unboundmodule.py");
goto python_init_fail;
}
if(PyRun_SimpleString("sys.path.extend(site.getsitepackages())\n") < 0) {
log_err("pythonmod: cannot initialize core module: unboundmodule.py");
goto python_init_fail;
}
if(PyRun_SimpleString("from unboundmodule import *\n") < 0)
{
log_err("pythonmod: cannot initialize core module: unboundmodule.py");
goto python_init_fail;
}
}
/* Check Python file load */
/* uses python to open the file, this works on other platforms,
* eg. Windows, to open the file in the correct mode for python */
#if PY_MAJOR_VERSION < 3
PyFileObject = PyFile_FromString((char*)pe->fname, "r");
script_py = PyFile_AsFile(PyFileObject);
#else
script_py = fopen(pe->fname, "r");
#endif
if (script_py == NULL)
{
log_err("pythonmod: can't open file %s for reading", pe->fname);
goto python_init_fail;
}
/* Load file */
pe->module = PyImport_AddModule("__main__");
Py_XINCREF(pe->module);
pe->dict = PyModule_GetDict(pe->module);
Py_XINCREF(pe->dict);
clean_python_function_objects(pe->dict);
pe->data = PyDict_New();
/* add the script filename to the global "mod_env" for trivial access */
fname = PyString_FromString(pe->fname);
if(PyDict_SetItemString(pe->data, "script", fname) < 0) {
log_err("pythonmod: could not add item to dictionary");
Py_XDECREF(fname);
goto python_init_fail;
}
Py_XDECREF(fname);
Py_XINCREF(pe->data); /* reference will be stolen below */
if(PyModule_AddObject(pe->module, "mod_env", pe->data) < 0) {
log_err("pythonmod: could not add mod_env object");
Py_XDECREF(pe->data); /* 2 times, here and on python_init_fail; */
/* on failure the reference is not stolen */
goto python_init_fail;
}
if (PyRun_SimpleFile(script_py, pe->fname) < 0) {
#if PY_MAJOR_VERSION <= 2 || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION < 9)
/* for python before 3.9 */
log_err("pythonmod: can't parse Python script %s", pe->fname);
/* print the error to logs too, run it again */
fseek(script_py, 0, SEEK_SET);
/* we don't run the file, like this, because then side-effects
* s = PyRun_File(script_py, pe->fname, Py_file_input,
* PyModule_GetDict(PyImport_AddModule("__main__")), pe->dict);
* could happen (again). Instead we parse the file again to get
* the error string in the logs, for when the daemon has stderr
* removed. SimpleFile run already printed to stderr, for then
* this is called from unbound-checkconf or unbound -dd the user
* has a nice formatted error.
*/
/* ignore the NULL return of _node, it is NULL due to the parse failure
* that we are expecting */
(void)PyParser_SimpleParseFile(script_py, pe->fname, Py_file_input);
#else
/* for python 3.9 and newer */
char* fstr = NULL;
size_t flen = 0;
log_err("pythonmod: can't parse Python script %s", pe->fname);
/* print the error to logs too, run it again */
fseek(script_py, 0, SEEK_END);
flen = (size_t)ftell(script_py);
fstr = malloc(flen+1);
if(!fstr) {
log_err("malloc failure to print parse error");
/* close the file */
#if PY_MAJOR_VERSION < 3
Py_XDECREF(PyFileObject);
#else
fclose(script_py);
#endif
goto python_init_fail;
}
fseek(script_py, 0, SEEK_SET);
if(fread(fstr, flen, 1, script_py) < 1) {
log_err("file read failed to print parse error: %s: %s",
pe->fname, strerror(errno));
free(fstr);
/* close the file */
#if PY_MAJOR_VERSION < 3
Py_XDECREF(PyFileObject);
#else
fclose(script_py);
#endif
goto python_init_fail;
}
fstr[flen] = 0;
/* we compile the string, but do not run it, to stop side-effects */
/* ignore the NULL return of _node, it is NULL due to the parse failure
* that we are expecting */
(void)Py_CompileString(fstr, pe->fname, Py_file_input);
#endif
log_py_err();
/* close the file */
#if PY_MAJOR_VERSION < 3
Py_XDECREF(PyFileObject);
#else
fclose(script_py);
#endif
#if PY_MAJOR_VERSION <= 2 || (PY_MAJOR_VERSION == 3 && PY_MINOR_VERSION < 9)
/* no cleanup needed for python before 3.9 */
#else
/* cleanup for python 3.9 and newer */
free(fstr);
#endif
goto python_init_fail;
}
/* close the file */
#if PY_MAJOR_VERSION < 3
Py_XDECREF(PyFileObject);
#else
fclose(script_py);
#endif
if ((pe->func_init = PyDict_GetItemString(pe->dict, "init_standard")) == NULL)
{
init_standard = 0;
if ((pe->func_init = PyDict_GetItemString(pe->dict, "init")) == NULL)
{
log_err("pythonmod: function init is missing in %s", pe->fname);
goto python_init_fail;
}
}
Py_XINCREF(pe->func_init);
if ((pe->func_deinit = PyDict_GetItemString(pe->dict, "deinit")) == NULL)
{
log_err("pythonmod: function deinit is missing in %s", pe->fname);
goto python_init_fail;
}
Py_XINCREF(pe->func_deinit);
if ((pe->func_operate = PyDict_GetItemString(pe->dict, "operate")) == NULL)
{
log_err("pythonmod: function operate is missing in %s", pe->fname);
goto python_init_fail;
}
Py_XINCREF(pe->func_operate);
if ((pe->func_inform = PyDict_GetItemString(pe->dict, "inform_super")) == NULL)
{
log_err("pythonmod: function inform_super is missing in %s", pe->fname);
goto python_init_fail;
}
Py_XINCREF(pe->func_inform);
if (init_standard)
{
py_init_arg = SWIG_NewPointerObj((void*) env, SWIGTYPE_p_module_env, 0);
}
else
{
py_init_arg = SWIG_NewPointerObj((void*) env->cfg,
SWIGTYPE_p_config_file, 0);
}
res = PyObject_CallFunction(pe->func_init, "iO", id, py_init_arg);
if (PyErr_Occurred())
{
log_err("pythonmod: Exception occurred in function init");
log_py_err();
goto python_init_fail;
}
Py_XDECREF(res);
Py_XDECREF(py_init_arg);
PyGILState_Release(gil);
return 1;
python_init_fail:
Py_XDECREF(pe->module);
Py_XDECREF(pe->dict);
Py_XDECREF(pe->data);
Py_XDECREF(pe->func_init);
Py_XDECREF(pe->func_deinit);
Py_XDECREF(pe->func_operate);
Py_XDECREF(pe->func_inform);
Py_XDECREF(res);
Py_XDECREF(py_init_arg);
PyGILState_Release(gil);
return 0;
}
void pythonmod_deinit(struct module_env* env, int id)
{
int cbtype;
struct pythonmod_env* pe = env->modinfo[id];
if(pe == NULL)
return;
/* Free Python resources */
if(pe->module != NULL)
{
PyObject* res;
PyGILState_STATE gil = PyGILState_Ensure();
/* Deinit module */
res = PyObject_CallFunction(pe->func_deinit, "i", id);
if (PyErr_Occurred()) {
log_err("pythonmod: Exception occurred in function deinit");
log_py_err();
}
/* Free result if any */
Py_XDECREF(res);
/* Free shared data if any */
Py_XDECREF(pe->module);
Py_XDECREF(pe->dict);
Py_XDECREF(pe->data);
Py_XDECREF(pe->func_init);
Py_XDECREF(pe->func_deinit);
Py_XDECREF(pe->func_inform);
Py_XDECREF(pe->func_operate);
PyGILState_Release(gil);
py_mod_count--;
}
pe->fname = NULL;
free(pe);
/* iterate over all possible callback types and clean up each in turn */
for (cbtype = 0; cbtype < inplace_cb_types_total; cbtype++)
inplace_cb_delete(env, cbtype, id);
/* Module is deallocated in Python */
env->modinfo[id] = NULL;
}
void pythonmod_inform_super(struct module_qstate* qstate, int id, struct module_qstate* super)
{
struct pythonmod_env* pe = (struct pythonmod_env*)qstate->env->modinfo[id];
struct pythonmod_qstate* pq = (struct pythonmod_qstate*)qstate->minfo[id];
PyObject* py_qstate, *py_sqstate, *res;
PyGILState_STATE gil = PyGILState_Ensure();
log_query_info(VERB_ALGO, "pythonmod: inform_super, sub is", &qstate->qinfo);
log_query_info(VERB_ALGO, "super is", &super->qinfo);
py_qstate = SWIG_NewPointerObj((void*) qstate, SWIGTYPE_p_module_qstate, 0);
py_sqstate = SWIG_NewPointerObj((void*) super, SWIGTYPE_p_module_qstate, 0);
res = PyObject_CallFunction(pe->func_inform, "iOOO", id, py_qstate,
py_sqstate, pq->data);
if (PyErr_Occurred())
{
log_err("pythonmod: Exception occurred in function inform_super");
log_py_err();
qstate->ext_state[id] = module_error;
}
else if ((res == NULL) || (!PyObject_IsTrue(res)))
{
log_err("pythonmod: python returned bad code in inform_super");
qstate->ext_state[id] = module_error;
}
Py_XDECREF(res);
Py_XDECREF(py_sqstate);
Py_XDECREF(py_qstate);
PyGILState_Release(gil);
}
void pythonmod_operate(struct module_qstate* qstate, enum module_ev event,
int id, struct outbound_entry* ATTR_UNUSED(outbound))
{
struct pythonmod_env* pe = (struct pythonmod_env*)qstate->env->modinfo[id];
struct pythonmod_qstate* pq = (struct pythonmod_qstate*)qstate->minfo[id];
PyObject* py_qstate, *res;
PyGILState_STATE gil = PyGILState_Ensure();
if ( pq == NULL)
{
/* create qstate */
pq = qstate->minfo[id] = malloc(sizeof(struct pythonmod_qstate));
if(!pq) {
log_err("pythonmod_operate: malloc failure for qstate");
PyGILState_Release(gil);
return;
}
/* Initialize per query data */
pq->data = PyDict_New();
if(!pq->data) {
log_err("pythonmod_operate: malloc failure for query data dict");
PyGILState_Release(gil);
return;
}
}
/* Call operate */
py_qstate = SWIG_NewPointerObj((void*) qstate, SWIGTYPE_p_module_qstate, 0);
res = PyObject_CallFunction(pe->func_operate, "iiOO", id, (int) event,
py_qstate, pq->data);
if (PyErr_Occurred())
{
log_err("pythonmod: Exception occurred in function operate, event: %s", strmodulevent(event));
log_py_err();
qstate->ext_state[id] = module_error;
}
else if ((res == NULL) || (!PyObject_IsTrue(res)))
{
log_err("pythonmod: python returned bad code, event: %s", strmodulevent(event));
qstate->ext_state[id] = module_error;
}
Py_XDECREF(res);
Py_XDECREF(py_qstate);
PyGILState_Release(gil);
}
void pythonmod_clear(struct module_qstate* qstate, int id)
{
struct pythonmod_qstate* pq;
if (qstate == NULL)
return;
pq = (struct pythonmod_qstate*)qstate->minfo[id];
verbose(VERB_ALGO, "pythonmod: clear, id: %d, pq:%p", id, pq);
if(pq != NULL)
{
PyGILState_STATE gil = PyGILState_Ensure();
Py_DECREF(pq->data);
PyGILState_Release(gil);
/* Free qstate */
free(pq);
}
qstate->minfo[id] = NULL;
}
size_t pythonmod_get_mem(struct module_env* env, int id)
{
struct pythonmod_env* pe = (struct pythonmod_env*)env->modinfo[id];
verbose(VERB_ALGO, "pythonmod: get_mem, id: %d, pe:%p", id, pe);
if(!pe)
return 0;
return sizeof(*pe);
}
/**
* The module function block
*/
static struct module_func_block pythonmod_block = {
"python",
&pythonmod_init, &pythonmod_deinit, NULL, NULL, &pythonmod_operate,
&pythonmod_inform_super, &pythonmod_clear, &pythonmod_get_mem
};
struct module_func_block* pythonmod_get_funcblock(void)
{
return &pythonmod_block;
}
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