Simplify aos::Init

Most of the variants were to deal with core, which has been gone for a
year.  Simplify those all into InitGoogle.

InitGoogle should be renamed to Init at some point.  It does everything
now.

Change-Id: I738ee03e9c5b2e6348ef33302835f915df68011f
diff --git a/frc971/analysis/py_log_reader.cc b/frc971/analysis/py_log_reader.cc
index e8843a9..8d3e2a6 100644
--- a/frc971/analysis/py_log_reader.cc
+++ b/frc971/analysis/py_log_reader.cc
@@ -13,11 +13,13 @@
 #include <Python.h>
 
 #include <memory>
+#include <errno.h>
 
 #include "aos/configuration.h"
 #include "aos/events/logging/logger.h"
 #include "aos/events/simulated_event_loop.h"
 #include "aos/flatbuffer_merge.h"
+#include "aos/init.h"
 #include "aos/json_to_flatbuffer.h"
 
 namespace frc971 {
@@ -75,6 +77,15 @@
 }
 
 int LogReader_init(LogReaderType *self, PyObject *args, PyObject *kwds) {
+  int count = 1;
+  if (!aos::IsInitialized()) {
+    // Fake out argc and argv to let InitGoogle run properly to instrument
+    // malloc, setup glog, and such.
+    char *name = program_invocation_name;
+    char **argv = &name;
+    aos::InitGoogle(&count, &argv);
+  }
+
   const char *kwlist[] = {"log_file_name", nullptr};
 
   const char *log_file_name;
diff --git a/frc971/autonomous/base_autonomous_actor.cc b/frc971/autonomous/base_autonomous_actor.cc
index 27b63cc..7df6998 100644
--- a/frc971/autonomous/base_autonomous_actor.cc
+++ b/frc971/autonomous/base_autonomous_actor.cc
@@ -36,7 +36,9 @@
       drivetrain_status_fetcher_(
           event_loop->MakeFetcher<drivetrain::Status>("/drivetrain")),
       drivetrain_goal_fetcher_(
-          event_loop->MakeFetcher<drivetrain::Goal>("/drivetrain")) {}
+          event_loop->MakeFetcher<drivetrain::Goal>("/drivetrain")) {
+  event_loop->SetRuntimeRealtimePriority(29);
+}
 
 void BaseAutonomousActor::ResetDrivetrain() {
   AOS_LOG(INFO, "resetting the drivetrain\n");
diff --git a/frc971/wpilib/ahal/RobotBase.h b/frc971/wpilib/ahal/RobotBase.h
index cf1ed4c..5b4ce5b 100644
--- a/frc971/wpilib/ahal/RobotBase.h
+++ b/frc971/wpilib/ahal/RobotBase.h
@@ -19,20 +19,6 @@
 
 class DriverStation;
 
-#ifdef WPILIB2017
-#define START_ROBOT_CLASS(_ClassName_)                                       \
-  int main() {                                                               \
-    if (!HAL_Initialize(0)) {                                                \
-      std::cerr << "FATAL ERROR: HAL could not be initialized" << std::endl; \
-      return -1;                                                             \
-    }                                                                        \
-    HAL_Report(HALUsageReporting::kResourceType_Language,                    \
-               HALUsageReporting::kLanguage_CPlusPlus);                      \
-    static _ClassName_ robot;                                                \
-    std::printf("\n********** Robot program starting **********\n");         \
-    robot.StartCompetition();                                                \
-  }
-#else
 #define START_ROBOT_CLASS(_ClassName_)                                       \
   int main(int argc, char *argv[]) {                                         \
     aos::InitGoogle(&argc, &argv);                                           \
@@ -50,7 +36,6 @@
     std::printf("\n********** Robot program starting **********\n");         \
     robot.StartCompetition();                                                \
   }
-#endif
 
 /**
  * Implement a Robot Program framework.
diff --git a/frc971/wpilib/joystick_sender.cc b/frc971/wpilib/joystick_sender.cc
index d31d4a5..a4634bf 100644
--- a/frc971/wpilib/joystick_sender.cc
+++ b/frc971/wpilib/joystick_sender.cc
@@ -19,7 +19,7 @@
       joystick_state_sender_(
           event_loop_->MakeSender<::aos::JoystickState>("/aos")),
       team_id_(::aos::network::GetTeamNumber()) {
-  event_loop_->SetRuntimeRealtimePriority(29);
+  event_loop_->SetRuntimeRealtimePriority(28);
   event_loop->set_name("joystick_sender");
 
   event_loop_->OnRun([this]() {
diff --git a/frc971/wpilib/wpilib_robot_base.h b/frc971/wpilib/wpilib_robot_base.h
index 3404bb8..e34e3ad 100644
--- a/frc971/wpilib/wpilib_robot_base.h
+++ b/frc971/wpilib/wpilib_robot_base.h
@@ -48,7 +48,18 @@
 class WPILibAdapterRobot : public frc::RobotBase {
  public:
   void StartCompetition() override {
-    ::aos::InitNRT();
+    // Just allow overcommit memory like usual. Various processes map memory
+    // they will never use, and the roboRIO doesn't have enough RAM to handle
+    // it. This is in here instead of starter.sh because starter.sh doesn't run
+    // with permissions on a roboRIO.
+    AOS_CHECK(system("echo 0 > /proc/sys/vm/overcommit_memory") == 0);
+
+    // Configure throttling so we reserve 5% of the CPU for non-rt work.
+    // This makes things significantly more stable when work explodes.
+    // This is in here instead of starter.sh for the same reasons, starter is
+    // suid and runs as admin, so this actually works.
+    AOS_CHECK(system("/sbin/sysctl -w kernel.sched_rt_period_us=1000000") == 0);
+    AOS_CHECK(system("/sbin/sysctl -w kernel.sched_rt_runtime_us=950000") == 0);
 
     robot_.Run();
   }