add tracy

libs/tracy/server/TracySysUtil.cpp

@@ -0,0 +1,43 @@
+
+
+#include "TracySysUtil.hpp"
+
+#ifdef _WIN32
+#  include <windows.h>
+#elif defined __linux__
+#  include <sys/sysinfo.h>
+#elif defined __APPLE__ || defined BSD
+#  include <sys/types.h>
+#  include <sys/sysctl.h>
+#endif
+
+namespace tracy
+{
+
+size_t GetPhysicalMemorySize()
+{
+#ifdef _WIN32
+    MEMORYSTATUSEX statex;
+    statex.dwLength = sizeof( statex );
+    GlobalMemoryStatusEx( &statex );
+    return statex.ullTotalPhys;
+#elif defined __linux__
+    struct sysinfo sysInfo;
+    sysinfo( &sysInfo );
+    return sysInfo.totalram;
+#elif defined __APPLE__
+    size_t memSize;
+    size_t sz = sizeof( memSize );
+    sysctlbyname( "hw.memsize", &memSize, &sz, nullptr, 0 );
+    return memSize;
+#elif defined BSD
+    size_t memSize;
+    size_t sz = sizeof( memSize );
+    sysctlbyname( "hw.physmem", &memSize, &sz, nullptr, 0 );
+    return memSize;
+#else
+    return 0;
+#endif
+}
+
+}