/// <summary>
/// Tries to open a shared memory map.
/// </summary>
/// <param name="globalMemoryRegion"></param>
/// <param name="memoryRegionId"></param>
/// <param name="sharedMemoryMapView"></param>
/// <returns></returns>
public static bool TryOpenExisting(
this GlobalMemoryRegion globalMemoryRegion,
MlosInternal.MemoryRegionId memoryRegionId,
out SharedMemoryMapView sharedMemoryMapView)
{
MlosInternal.RegisteredMemoryRegionConfig.CodegenKey registeredMemoryLookupKey = default;
registeredMemoryLookupKey.MemoryRegionId = memoryRegionId;
// Locate shared memory region config.
//
SharedConfig <MlosProxyInternal.RegisteredMemoryRegionConfig> registeredMemoryRegionSharedConfig =
SharedConfigManager.Lookup(globalMemoryRegion.SharedConfigDictionary, registeredMemoryLookupKey);
if (!registeredMemoryRegionSharedConfig.HasSharedConfig)
{
sharedMemoryMapView = null;
return(false);
}
// Config exists, create a shared config memory region.
//
MlosProxyInternal.RegisteredMemoryRegionConfig registeredMemoryRegionConfig = registeredMemoryRegionSharedConfig.Config;
sharedMemoryMapView = SharedMemoryMapView.OpenExisting(
registeredMemoryRegionConfig.MemoryMapName.Value,
registeredMemoryRegionConfig.MemoryRegionSize);
return(true);
}
/// <summary>
/// Register shared config memory region.
/// </summary>
/// <param name="sharedMemoryRegionIndex">Index of the shared memory region.</param>
private void RegisterSharedConfigMemoryRegion(uint sharedMemoryRegionIndex)
{
MlosInternal.RegisteredMemoryRegionConfig.CodegenKey codegenKey = default;
codegenKey.MemoryRegionIndex = sharedMemoryRegionIndex;
// Locate shared memory region config.
//
SharedConfig <RegisteredMemoryRegionConfig> registeredMemoryRegionSharedConfig =
SharedConfigManager.Lookup(mlosContext.GlobalMemoryRegion.SharedConfigDictionary, codegenKey);
if (registeredMemoryRegionSharedConfig.HasSharedConfig)
{
// Config exists, register memory region with the shared config manager.
//
RegisteredMemoryRegionConfig registeredMemoryRegionConfig = registeredMemoryRegionSharedConfig.Config;
mlosContext.SharedConfigManager.RegisterSharedConfigMemoryRegion(
memoryRegionId: registeredMemoryRegionConfig.MemoryRegionIndex,
sharedMemoryMapName: registeredMemoryRegionConfig.SharedMemoryMapName.Value,
memoryRegionSize: registeredMemoryRegionConfig.MemoryRegionSize);
}
}
