CPUUsage (Haiku): add support

Author: CarterLi

CMakeLists.txt

@@ -1132,7 +1132,7 @@ elseif(Haiku)
         src/detection/chassis/chassis_windows.c
         src/detection/cpu/cpu_haiku.c
         src/detection/cpucache/cpucache_shared.c
-        src/detection/cpuusage/cpuusage_nosupport.c
+        src/detection/cpuusage/cpuusage_haiku.c
         src/detection/cursor/cursor_nosupport.c
         src/detection/bluetooth/bluetooth_nosupport.c
         src/detection/bluetoothradio/bluetoothradio_nosupport.c

src/detection/cpuusage/cpuusage_haiku.c

@@ -0,0 +1,27 @@
+#include "fastfetch.h"
+#include "detection/cpuusage/cpuusage.h"
+#include "util/mallocHelper.h"
+
+#include <OS.h>
+
+const char* ffGetCpuUsageInfo(FFlist* cpuTimes)
+{
+    system_info sysInfo;
+    if (get_system_info(&sysInfo) != B_OK)
+        return "get_system_info() failed";
+
+    FF_AUTO_FREE cpu_info* cpuInfo = malloc(sizeof(*cpuInfo) * sysInfo.cpu_count);
+    if (get_cpu_info(0, sysInfo.cpu_count, cpuInfo) != B_OK)
+        return "get_cpu_info() failed";
+
+    uint64_t uptime = (uint64_t) system_time();
+
+    for (uint32_t i = 0; i < sysInfo.cpu_count; ++i)
+    {
+        FFCpuUsageInfo* info = (FFCpuUsageInfo*) ffListAdd(cpuTimes);
+        info->inUseAll = (uint64_t) cpuInfo[i].active_time;
+        info->totalAll = uptime;
+    }
+
+    return NULL;
+}