/// <summary>
/// Initialize GlobalMemoryRegion.
/// </summary>
/// <param name="globalMemoryRegion"></param>
/// <returns></returns>
public static GlobalMemoryRegion InitializeMemoryRegion(this GlobalMemoryRegion globalMemoryRegion)
{
// Initialize properties.
//
globalMemoryRegion.GlobalMemoryRegionIndex = 1;
globalMemoryRegion.RegisteredSettingsAssemblyCount.Store(1);
MemoryRegion memoryHeader = globalMemoryRegion.MemoryHeader;
MemoryRegionId memoryRegionId = memoryHeader.MemoryRegionId;
memoryRegionId.Type = MemoryRegionType.Global;
SharedConfigDictionary sharedConfigDictionary = globalMemoryRegion.SharedConfigDictionary;
ArenaAllocator allocator = sharedConfigDictionary.Allocator;
// Initialize memory allocator.
//
allocator.InitializeArenaAllocator(memoryHeader, (int)globalMemoryRegion.CodegenTypeSize());
// Initialize shared config dictionary.
//
sharedConfigDictionary.InitializeSharedConfigDictionary();
return(globalMemoryRegion);
}
/// <summary>
/// Lookup shared config by codegen key in given shared config dictionary.
/// </summary>
/// <typeparam name="TType">Codegen type.</typeparam>
/// <typeparam name="TKey">Codegen key type.</typeparam>
/// <typeparam name="TProxy">Codegen proxy.</typeparam>
/// <param name="sharedConfigDictionary"></param>
/// <param name="codegenKey"></param>
/// <returns></returns>
public static SharedConfig <TProxy> Lookup <TType, TKey, TProxy>(MlosProxyInternal.SharedConfigDictionary sharedConfigDictionary, ICodegenKey <TType, TKey, TProxy> codegenKey)
where TType : ICodegenType, new()
where TKey : ICodegenKey, new()
where TProxy : ICodegenProxy <TType, TProxy>, new()
{
uint slotIndex = 0;
return(MlosProxyInternal.SharedConfigDictionaryLookup <ProbingPolicy> .Get <TProxy>(sharedConfigDictionary, codegenKey, ref slotIndex));
}
/// <summary>
/// Initializes the shared config dictionary stored in the memory region.
/// </summary>
/// <param name="sharedConfigDictionary"></param>
public static void InitializeSharedConfigDictionary(this SharedConfigDictionary sharedConfigDictionary)
{
uint elementCount = 2048;
AllocationEntry allocationEntry = sharedConfigDictionary.Allocator.Allocate(default(UIntArray).CodegenTypeSize() + (sizeof(uint) * elementCount));
sharedConfigDictionary.OffsetToConfigsArray = (uint)allocationEntry.Buffer.Offset(sharedConfigDictionary.Buffer) + (uint)default(AllocationEntry).CodegenTypeSize();
UIntArray configsOffsetArray = sharedConfigDictionary.ConfigsOffsetArray;
configsOffsetArray.Count = elementCount;
}
/// <summary>
/// Internal lookup. TProxy type is deduced by the caller.
/// </summary>
/// <typeparam name="TProxy">Codegen proxy type.</typeparam>
/// <param name="sharedConfigDictionary"></param>
/// <param name="codegenKey"></param>
/// <param name="slotIndex"></param>
/// <returns></returns>
internal static SharedConfig <TProxy> Get <TProxy>(
SharedConfigDictionary sharedConfigDictionary,
ICodegenKey codegenKey,
ref uint slotIndex)
where TProxy : ICodegenProxy, new()
{
TProbingPolicy probingPolicy = default;
uint probingCount = 0;
slotIndex = 0;
UIntArray configsArray = sharedConfigDictionary.ConfigsOffsetArray;
uint elementCount = configsArray.Count;
ProxyArray <uint> sharedConfigsOffsets = configsArray.Elements;
SharedConfig <TProxy> sharedConfig = default;
while (true)
{
slotIndex = probingPolicy.CalculateIndex(codegenKey, ref probingCount, elementCount);
uint offsetToSharedConfig = sharedConfigsOffsets[(int)slotIndex];
if (offsetToSharedConfig == 0)
{
// Slot entry is empty.
//
sharedConfig.Buffer = IntPtr.Zero;
break;
}
// Compare the object keys.
// Create a proxy to the shared config.
//
sharedConfig.Buffer = sharedConfigDictionary.Buffer - sharedConfigDictionary.Allocator.OffsetToAllocator + (int)offsetToSharedConfig;
// Compare key with the proxy.
//
bool foundEntry = codegenKey.CodegenTypeIndex() == sharedConfig.Header.CodegenTypeIndex &&
codegenKey.CompareKey(sharedConfig.Config);
if (foundEntry)
{
break;
}
++probingCount;
}
return(sharedConfig);
}
/// <summary>
/// Add a new shared config.
/// </summary>
/// <typeparam name="TType">Codegen config type.</typeparam>
/// <typeparam name="TProxy">Codegen proxy type.</typeparam>
/// <param name="sharedConfigDictionary"></param>
/// <param name="componentConfig"></param>
internal static void Add <TType, TProxy>(
SharedConfigDictionary sharedConfigDictionary,
ComponentConfig <TType, TProxy> componentConfig)
where TType : ICodegenType, new()
where TProxy : ICodegenProxy <TType, TProxy>, new()
{
uint slotIndex = 0;
SharedConfig <TProxy> sharedConfig = Get <TProxy>(sharedConfigDictionary, componentConfig.Config, ref slotIndex);
if (sharedConfig.Buffer != IntPtr.Zero)
{
throw new ArgumentException("Config already present", nameof(componentConfig));
}
TType config = componentConfig.Config;
// Calculate size to allocate.
//
sharedConfig = sharedConfigDictionary.Allocator.Allocate <SharedConfig <TProxy> >();
// Update hash map
//
ProxyArray <uint> sharedConfigOffsets = sharedConfigDictionary.ConfigsOffsetArray.Elements;
// #TODO verify.
sharedConfigOffsets[(int)slotIndex] = (uint)sharedConfig.Buffer.Offset(sharedConfigDictionary.Buffer - sharedConfigDictionary.Allocator.OffsetToAllocator);
// Copy header, copy config.
//
SharedConfigHeader sharedHeader = sharedConfig.Header;
TProxy configProxy = sharedConfig.Config;
// Initialize header.
//
sharedHeader.ConfigId.Store(1);
sharedHeader.CodegenTypeIndex = config.CodegenTypeIndex();
// Copy the config to proxy.
//
CodegenTypeExtensions.Serialize(componentConfig.Config, sharedConfig.Config.Buffer);
}
/// <summary>
/// Initialize SharedConfigMemoryRegion.
/// </summary>
/// <param name="sharedConfigMemoryRegion"></param>
/// <returns></returns>
public static SharedConfigMemoryRegion InitializeMemoryRegion(this SharedConfigMemoryRegion sharedConfigMemoryRegion)
{
SharedConfigDictionary sharedConfigDictionary = sharedConfigMemoryRegion.SharedConfigDictionary;
ArenaAllocator allocator = sharedConfigDictionary.Allocator;
MemoryRegion memoryHeader = sharedConfigMemoryRegion.MemoryHeader;
MemoryRegionId memoryRegionId = memoryHeader.MemoryRegionId;
memoryRegionId.Type = MemoryRegionType.SharedConfig;
// Initialize memory allocator.
//
allocator.InitializeArenaAllocator(sharedConfigMemoryRegion.MemoryHeader, (int)sharedConfigMemoryRegion.CodegenTypeSize());
// Initialize shared config dictionary.
//
sharedConfigDictionary.InitializeSharedConfigDictionary();
return(sharedConfigMemoryRegion);
}
