From 76939ce77f847cacd72475d4f9d57b29fb63aaa9 Mon Sep 17 00:00:00 2001
From: James Thistlewood <jamesthistlewood@gmail.com>
Date: Sat, 20 Mar 2021 20:53:56 +0000
Subject: [PATCH] move shared definitions to defs.h

---
 linux/plugins/defs.h        | 20 ++++++++++++++++++++
 linux/plugins/plugin.cpp    | 18 +++---------------
 linux/plugins/read_util.cpp | 12 +++---------
 3 files changed, 26 insertions(+), 24 deletions(-)
 create mode 100644 linux/plugins/defs.h

diff --git a/linux/plugins/defs.h b/linux/plugins/defs.h
new file mode 100644
index 000000000..7fe0ecd41
--- /dev/null
+++ b/linux/plugins/defs.h
@@ -0,0 +1,20 @@
+#ifndef __DEFS__
+#define __DEFS__
+
+// SDK
+#include "scssdk_telemetry.h"
+#include "eurotrucks2/scssdk_eut2.h"
+#include "eurotrucks2/scssdk_telemetry_eut2.h"
+#include "amtrucks/scssdk_ats.h"
+#include "amtrucks/scssdk_telemetry_ats.h"
+
+const char shm_name[] = "/ets2radiolinux";
+const int NUM_PAGES = 1;
+
+typedef struct telemetry_state_t
+{
+	scs_value_dplacement_t world_position;
+	scs_value_bool_t electricity;
+} telemetry_state_t;
+
+#endif /* __DEFS__ */
diff --git a/linux/plugins/plugin.cpp b/linux/plugins/plugin.cpp
index 69a303853..dc1b2fb25 100644
--- a/linux/plugins/plugin.cpp
+++ b/linux/plugins/plugin.cpp
@@ -11,13 +11,7 @@
 #include <unistd.h>
 #include <fcntl.h>
 
-// SDK
-
-#include "scssdk_telemetry.h"
-#include "eurotrucks2/scssdk_eut2.h"
-#include "eurotrucks2/scssdk_telemetry_eut2.h"
-#include "amtrucks/scssdk_ats.h"
-#include "amtrucks/scssdk_telemetry_ats.h"
+#include "defs.h"
 
 #define UNUSED(x)
 
@@ -29,11 +23,7 @@ bool output_paused = true;
 /**
  * @brief Useful telemetry data.
  */
-struct telemetry_state_t
-{
-	scs_value_dplacement_t world_position;
-	scs_value_bool_t electricity;
-} telemetry;
+telemetry_state_t telemetry;
 
 /**
  * @brief Time since last mmap
@@ -48,8 +38,6 @@ static scs_timestamp_t update_interval = 5e5;	// every 0.5s
 void* mapped_region = NULL;
 size_t MAP_SIZE = -1;
 
-static char shm_name[] = "/ets2radiolinux";
-
 /**
  * @brief Function writing message to the game internal log.
  */
@@ -231,7 +219,7 @@ SCSAPI_RESULT scs_telemetry_init(const scs_u32_t version, const scs_telemetry_in
 	memset(&telemetry, 0, sizeof(telemetry));
 
 	// We only need one page of memory
-	MAP_SIZE = getpagesize();
+	MAP_SIZE = getpagesize() * NUM_PAGES;
 
 	// Open shared memory
 	int handle = shm_open(shm_name, O_RDWR | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR);
diff --git a/linux/plugins/read_util.cpp b/linux/plugins/read_util.cpp
index 110047656..d9f4135b1 100644
--- a/linux/plugins/read_util.cpp
+++ b/linux/plugins/read_util.cpp
@@ -9,6 +9,8 @@
 #include <unistd.h>
 #include <fcntl.h>
 
+#include "defs.h"
+
 // SDK
 
 #include "scssdk_telemetry.h"
@@ -17,14 +19,6 @@
 #include "amtrucks/scssdk_ats.h"
 #include "amtrucks/scssdk_telemetry_ats.h"
 
-static char shm_name[] = "/ets2radiolinux";
-
-typedef struct telemetry_state_t
-{
-	scs_value_dplacement_t world_position;
-	scs_value_bool_t electricity;
-} telemetry_state_t;
-
 void print_info(telemetry_state_t info) {
     scs_value_dvector_t pos = info.world_position.position;
     int elec = info.electricity.value > 0 ? 1 : 0;
@@ -34,7 +28,7 @@ void print_info(telemetry_state_t info) {
 
 int main() {
 	// We only need one page of memory
-	size_t MAP_SIZE = getpagesize();
+	size_t MAP_SIZE = getpagesize() * NUM_PAGES;
 
 	// Open shared memory
 	int handle = shm_open(shm_name, O_RDONLY, S_IRUSR);