Added idle time detection for macOS.

CMakeLists.txt

@@ -147,8 +147,10 @@ elseif (XMRIG_OS_APPLE)
         src/App_unix.cpp
         src/crypto/common/VirtualMemory_unix.cpp
         )
+
     find_library(IOKIT_LIBRARY IOKit)
-    set(EXTRA_LIBS ${IOKIT_LIBRARY})
+    find_library(CORESERVICES_LIBRARY CoreServices)
+    set(EXTRA_LIBS ${IOKIT_LIBRARY} ${CORESERVICES_LIBRARY})
 else()
     list(APPEND SOURCES_OS
         src/App_unix.cpp

src/base/kernel/Platform_mac.cpp

@@ -25,7 +25,6 @@
 #include <uv.h>
 #include <thread>
 #include <fstream>
-#include <limits>
 
 
 #include "base/kernel/Platform.h"
@@ -112,5 +111,14 @@ bool xmrig::Platform::isOnBatteryPower()
 
 uint64_t xmrig::Platform::idleTime()
 {
-    return std::numeric_limits<uint64_t>::max();
+    uint64_t idle_time  = 0;
+    const auto service  = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOHIDSystem"));
+    const auto property = IORegistryEntryCreateCFProperty(service, CFSTR("HIDIdleTime"), kCFAllocatorDefault, 0);
+
+    CFNumberGetValue((CFNumberRef)property, kCFNumberSInt64Type, &idle_time);
+
+    CFRelease(property);
+    IOObjectRelease(service);
+
+    return idle_time / 1000000U;
 }

src/hw/dmi/dmi.cmake

@@ -27,8 +27,6 @@ if (WITH_DMI)
         list(APPEND SOURCES src/hw/dmi/DmiReader_unix.cpp)
     elseif(XMRIG_OS_MACOS)
         list(APPEND SOURCES src/hw/dmi/DmiReader_mac.cpp)
-        find_library(CORESERVICES_LIBRARY CoreServices)
-        list(APPEND EXTRA_LIBS ${CORESERVICES_LIBRARY})
     endif()
 else()
     remove_definitions(/DXMRIG_FEATURE_DMI)