From f4ad730cc4637f3b98cd6159c714504538af1cd0 Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Mon, 4 Nov 2019 22:39:27 +1100
Subject: [PATCH] [arbiter] initial arbiter program for porthole communications

---
 VERSION                |  2 +-
 arbiter/.gitignore     |  3 ++
 arbiter/CMakeLists.txt | 62 ++++++++++++++++++++++++++++++++++++++++++
 arbiter/src/main.c     | 55 +++++++++++++++++++++++++++++++++++++
 4 files changed, 121 insertions(+), 1 deletion(-)
 create mode 100644 arbiter/.gitignore
 create mode 100644 arbiter/CMakeLists.txt
 create mode 100644 arbiter/src/main.c

diff --git a/VERSION b/VERSION
index baf037d0..485b77cb 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-B1-29-g27c3a93d15+1
\ No newline at end of file
+B1-30-g67ddb70932+1
\ No newline at end of file
diff --git a/arbiter/.gitignore b/arbiter/.gitignore
new file mode 100644
index 00000000..0824b6c0
--- /dev/null
+++ b/arbiter/.gitignore
@@ -0,0 +1,3 @@
+bin/
+build/
+*.swp
diff --git a/arbiter/CMakeLists.txt b/arbiter/CMakeLists.txt
new file mode 100644
index 00000000..cab64878
--- /dev/null
+++ b/arbiter/CMakeLists.txt
@@ -0,0 +1,62 @@
+cmake_minimum_required(VERSION 3.0)
+project(looking-glass-arbiter C)
+
+set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
+
+include(GNUInstallDirs)
+include(CheckCCompilerFlag)
+include(FeatureSummary)
+
+option(OPTIMIZE_FOR_NATIVE "Build with -march=native" ON)
+if(OPTIMIZE_FOR_NATIVE)
+  CHECK_C_COMPILER_FLAG("-march=native" COMPILER_SUPPORTS_MARCH_NATIVE)
+  if(COMPILER_SUPPORTS_MARCH_NATIVE)
+    add_compile_options("-march=native")
+  endif()
+endif()
+
+add_compile_options(
+  "-Wall"
+  "-Werror"
+  "-Wfatal-errors"
+  "-ffast-math"
+  "-fdata-sections"
+  "-ffunction-sections"
+  "$<$<CONFIG:DEBUG>:-O0;-g3;-ggdb>"
+)
+
+set(EXE_FLAGS "-Wl,--gc-sections")
+set(CMAKE_C_STANDARD 11)
+
+execute_process(
+	COMMAND			cat ../VERSION
+	WORKING_DIRECTORY	${PROJECT_SOURCE_DIR}
+	OUTPUT_VARIABLE		BUILD_VERSION
+	OUTPUT_STRIP_TRAILING_WHITESPACE
+)
+
+add_definitions(-D BUILD_VERSION='"${BUILD_VERSION}"')
+get_filename_component(PROJECT_TOP "${PROJECT_SOURCE_DIR}/.." ABSOLUTE)
+
+include_directories(
+	${PROJECT_SOURCE_DIR}/include
+	${CMAKE_BINARY_DIR}/include
+)
+
+set(SOURCES
+	src/main.c
+)
+
+add_subdirectory("${PROJECT_TOP}/common" "${CMAKE_BINARY_DIR}/common")
+add_subdirectory("${PROJECT_TOP}/porthole" "${CMAKE_BINARY_DIR}/porthole")
+
+add_executable(looking-glass-arbiter ${SOURCES})
+target_link_libraries(looking-glass-arbiter
+	${EXE_FLAGS}
+	lg_common
+	porthole
+)
+
+install(PROGRAMS ${CMAKE_BINARY_DIR}/looking-glass-arbiter DESTINATION bin/ COMPONENT binary)
+
+feature_summary(WHAT ENABLED_FEATURES DISABLED_FEATURES)
diff --git a/arbiter/src/main.c b/arbiter/src/main.c
new file mode 100644
index 00000000..71cfe242
--- /dev/null
+++ b/arbiter/src/main.c
@@ -0,0 +1,55 @@
+#include "common/debug.h"
+#include "common/option.h"
+#include "porthole/client.h"
+
+static struct Option options[] =
+{
+  // app options
+  {
+    .module         = "host",
+    .name           = "socket",
+    .description    = "The porthole host socket",
+    .type           = OPTION_TYPE_STRING,
+    .value.x_string = "/var/tmp/porthole",
+  },
+  {0}
+};
+
+static void map_event(uint32_t type, PortholeMap * map)
+{
+  DEBUG_INFO("map_event: %u, %u, %u", type, map->id, map->size);
+}
+
+static void unmap_event(uint32_t id)
+{
+  DEBUG_INFO("unmap_event: %u", id);
+}
+
+static void discon_event()
+{
+  DEBUG_INFO("discon_event");
+}
+
+int main(int argc, char * argv[])
+{
+  option_register(options);
+  if (!option_parse(argc, argv))
+    return -1;
+
+  if (!option_validate())
+    return -1;
+
+  PortholeClient phc;
+  if (!porthole_client_open(
+        &phc,
+        option_get_string("host", "socket"),
+        map_event,
+        unmap_event,
+        discon_event))
+  {
+    return -1;
+  }
+
+  porthole_client_close(&phc);
+  return 0;
+}
\ No newline at end of file