/// <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);
}
public void VerifySharedMemoryMapUnlink()
{
// Create a new shared memory maps.
//
var newSharedChannelMemoryMap = SharedMemoryMapView.CreateNew(SharedMemoryMapName, SharedMemorySize);
newSharedChannelMemoryMap.CleanupOnClose = true;
newSharedChannelMemoryMap.Dispose();
try
{
// Verify we can open already created shared memory.
//
using var openedSharedChannelMemoryMap = SharedMemoryMapView.OpenExisting(SharedMemoryMapName, SharedMemorySize);
openedSharedChannelMemoryMap.CleanupOnClose = true;
Assert.False(true, "Shared memory map should be deleted");
}
catch (FileNotFoundException)
{
// We are expecting failure.
//
}
}
