add python bindings

src/bindings.cpp

@@ -0,0 +1,68 @@
+#include <pybind11/pybind11.h>
+#include <pybind11/functional.h>
+#include <set>
+#include <iostream>
+
+#include "libnethogs.h"
+
+namespace py = pybind11;
+
+//--- for some reason this is a global defined in main.cpp
+std::set<pid_t> pidsToWatch;
+
+//--- hacky way to get callbacks working and handle signals
+std::function<void(int, NethogsMonitorRecord const *)> empty_callback;
+std::function<void(int, NethogsMonitorRecord const *)> loop_callback;
+void loop_callback_wrapper(int arg1, NethogsMonitorRecord const *arg2){
+  py::gil_scoped_acquire acquire;
+  if (PyErr_CheckSignals() != 0) {
+    nethogsmonitor_breakloop();
+    PyErr_Clear();
+  }
+  else if (loop_callback) {
+    loop_callback(arg1, arg2);
+  }
+}
+
+int nethogsmonitor_loop_py(
+  std::function<void(int, NethogsMonitorRecord const *)> &cb,
+  char *filter,
+  int to_ms)
+{
+    int retval;
+    loop_callback = cb;
+    {
+      py::gil_scoped_release release;
+      retval = nethogsmonitor_loop(loop_callback_wrapper, filter, to_ms);
+    }
+    loop_callback = empty_callback;
+    return retval;
+}
+
+//--- python module binding
+PYBIND11_MODULE(nethogs, m) {
+    py::class_<NethogsMonitorRecord>(m, "NethogsMonitorRecord")
+        .def_readwrite("record_id", &NethogsMonitorRecord::record_id)
+        .def_readwrite("name", &NethogsMonitorRecord::name)
+        .def_readwrite("pid", &NethogsMonitorRecord::pid)
+        .def_readwrite("uid", &NethogsMonitorRecord::uid)
+        .def_readwrite("device_name", &NethogsMonitorRecord::device_name)
+        .def_readwrite("sent_bytes", &NethogsMonitorRecord::sent_bytes)
+        .def_readwrite("recv_bytes", &NethogsMonitorRecord::recv_bytes)
+        .def_readwrite("sent_kbs", &NethogsMonitorRecord::sent_kbs)
+        .def_readwrite("recv_kbs", &NethogsMonitorRecord::recv_kbs);
+
+    m.def("nethogsmonitor_loop", &nethogsmonitor_loop_py, R"pbdoc(
+        Nethogs monitor loop
+    )pbdoc");
+    m.def("nethogsmonitor_breakloop", &nethogsmonitor_breakloop, R"pbdoc(
+        Nethogs monitor loop break
+    )pbdoc");
+
+#ifdef VERSION
+    m.attr("__version__") = VERSION;
+#else
+    m.attr("__version__") = "unknown";
+#endif
+
+}

src/process.cpp

@@ -268,7 +268,7 @@ Process *getProcess(unsigned long inode, const char *devicename) {
   if (proc != NULL)
     return proc;
 
-  if ( !(pidsToWatch.empty()) && pidsToWatch.find(node->pid) == pidsToWatch.end() ) {    
+  if ( !(pidsToWatch.empty()) && pidsToWatch.find(node->pid) == pidsToWatch.end() ) {
     return NULL;
   }
 
@@ -440,4 +440,3 @@ void remove_timed_out_processes() {
 }
 
 void garbage_collect_processes() { garbage_collect_inodeproc(); }
-