From f4335e3f112ab0c735e783d7699906a4ff01a1b5 Mon Sep 17 00:00:00 2001
From: lif <lifning+git@pm.me>
Date: Sun, 17 Nov 2019 23:13:25 -0800
Subject: [PATCH] stubs for ENVIRONMENT_GET_PERF_INTERFACE

---
 src/retro/wrapper.rs | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/src/retro/wrapper.rs b/src/retro/wrapper.rs
index cae3dcd..e33df7c 100644
--- a/src/retro/wrapper.rs
+++ b/src/retro/wrapper.rs
@@ -225,7 +225,18 @@ impl StaticCallbacks {
             // TODO EnvCmd::GetSensorInterface => {},
             // TODO EnvCmd::GetCameraInterface => {},
             EnvCmd::GetLogInterface => unsafe { c_ext_handle_get_log_interface(data as *mut LogCallback) },
-            // TODO EnvCmd::GetPerfInterface => {},
+            EnvCmd::GetPerfInterface => {
+                let pc = PerfCallback {
+                    get_time_usec: Self::perf_get_time_usec_cb,
+                    get_cpu_features: Self::perf_get_cpu_features_cb,
+                    get_perf_counter: Self::perf_get_counter_cb,
+                    perf_register: Self::perf_register_cb,
+                    perf_start: Self::perf_start_cb,
+                    perf_stop: Self::perf_stop_cb,
+                    perf_log: Self::perf_log_cb,
+                };
+                Self::clone_into_void(data, &pc)?
+            },
             // TODO EnvCmd::GetLocationInterface => {},
             EnvCmd::GetCoreAssetsDirectory => Self::path_into_void(data, handler.get_core_assets_directory()?)?,
             EnvCmd::GetSaveDirectory => Self::path_into_void(data, handler.get_save_directory()?)?,
@@ -321,13 +332,20 @@ impl StaticCallbacks {
             }
         }
     }
-
     extern "C" fn set_rumble_state_cb(port: c_uint, effect: RumbleEffect, strength: u16) -> bool {
         match unsafe { CB_SINGLETON.handler.as_mut() } {
             Some(cb) => cb.set_rumble_state(port, effect, strength),
             None => false,
         }
     }
+    // TODO: trait methods
+    extern "C" fn perf_get_time_usec_cb() -> Time { 0 }
+    extern "C" fn perf_get_counter_cb() -> PerfTick { 0 }
+    extern "C" fn perf_get_cpu_features_cb() -> u64 { 0 }
+    extern "C" fn perf_log_cb() {}
+    extern "C" fn perf_register_cb(_counter: *mut PerfCounter) {}
+    extern "C" fn perf_start_cb(_counter: *mut PerfCounter) {}
+    extern "C" fn perf_stop_cb(_counter: *mut PerfCounter) {}
 }
 
 pub struct LibretroWrapper {