/// <summary>
/// Initializes a new instance of the <see cref="AnonymousMemoryMlosContext"/> class.
/// </summary>
/// <param name="globalMemoryRegionView"></param>
/// <param name="controlChannelMemoryMapView"></param>
/// <param name="feedbackChannelMemoryMapView"></param>
/// <param name="sharedConfigMemoryRegionView"></param>
/// <param name="controlChannelNamedEvent"></param>
/// <param name="feedbackChannelNamedEvent"></param>
/// <param name="fileDescriptorExchangeServer"></param>
private AnonymousMemoryMlosContext(
SharedMemoryRegionView <MlosProxyInternal.GlobalMemoryRegion> globalMemoryRegionView,
SharedMemoryMapView controlChannelMemoryMapView,
SharedMemoryMapView feedbackChannelMemoryMapView,
SharedMemoryRegionView <MlosProxyInternal.SharedConfigMemoryRegion> sharedConfigMemoryRegionView,
NamedEvent controlChannelNamedEvent,
NamedEvent feedbackChannelNamedEvent,
FileDescriptorExchangeServer fileDescriptorExchangeServer)
{
this.globalMemoryRegionView = globalMemoryRegionView ?? throw new ArgumentNullException(nameof(globalMemoryRegionView));
this.controlChannelMemoryMapView = controlChannelMemoryMapView ?? throw new ArgumentNullException(nameof(controlChannelMemoryMapView));
this.feedbackChannelMemoryMapView = feedbackChannelMemoryMapView ?? throw new ArgumentNullException(nameof(feedbackChannelMemoryMapView));
this.controlChannelNamedEvent = controlChannelNamedEvent ?? throw new ArgumentNullException(nameof(controlChannelNamedEvent));
this.feedbackChannelNamedEvent = feedbackChannelNamedEvent ?? throw new ArgumentNullException(nameof(feedbackChannelNamedEvent));
this.fileDescriptorExchangeServer = fileDescriptorExchangeServer;
// Create the shared config manager.
//
SharedConfigManager = new SharedConfigManager();
// Register shared config memory region.
//
SharedConfigManager.RegisterSharedConfigMemoryRegion(sharedConfigMemoryRegionView);
MlosProxyInternal.GlobalMemoryRegion globalMemoryRegion = globalMemoryRegionView.MemoryRegion();
// Increase the usage counter. When closing global shared memory, we will decrease the counter.
// If there is no process using the shared memory, we will clean the OS resources. On Windows OS,
// this is no-op; on Linux, we unlink created files.
//
globalMemoryRegion.AttachedProcessesCount.FetchAdd(1);
// Create the control channel instance.
//
ControlChannel = new SharedChannel <InterProcessSharedChannelPolicy, SharedChannelSpinPolicy>(
buffer: controlChannelMemoryMapView.Buffer,
size: (uint)controlChannelMemoryMapView.MemSize,
sync: globalMemoryRegion.ControlChannelSynchronization)
{
ChannelPolicy = { NotificationEvent = controlChannelNamedEvent },
};
// Create the feedback channel instance.
//
FeedbackChannel = new SharedChannel <InterProcessSharedChannelPolicy, SharedChannelSpinPolicy>(
buffer: feedbackChannelMemoryMapView.Buffer,
size: (uint)feedbackChannelMemoryMapView.MemSize,
sync: globalMemoryRegion.FeedbackChannelSynchronization)
{
ChannelPolicy = { NotificationEvent = feedbackChannelNamedEvent },
};
}
/// <summary>
/// Creates or opens a shared memory view.
/// </summary>
/// <param name="sharedMemoryMapName"></param>
/// <param name="sharedMemorySize"></param>
/// <returns></returns>
public static new SharedMemoryMapView CreateOrOpen(string sharedMemoryMapName, ulong sharedMemorySize)
{
// Create or open shared memory view.
//
var sharedMemoryMapView = new SharedMemoryMapView(
sharedMemoryMapName,
sharedMemorySize,
Native.OpenFlags.O_CREAT | Native.OpenFlags.O_RDWR);
return(sharedMemoryMapView);
}
/// <summary>
/// Creates InterProcessMlosContext.
/// </summary>
/// <returns></returns>
public static AnonymousMemoryMlosContext Create()
{
var fdExchangeServer = new FileDescriptorExchangeServer(FdUnitDomainSocketName, FdExchangeSemaphoreName);
fdExchangeServer.HandleRequests();
MemoryRegionId memoryRegionId = new MemoryRegionId {
Type = MemoryRegionType.Global
};
SharedMemoryRegionView <MlosProxyInternal.GlobalMemoryRegion> globalMemoryRegionView =
SharedMemoryRegionView.OpenAnonymousFromFileDescriptor <MlosProxyInternal.GlobalMemoryRegion>(
fdExchangeServer.GetSharedMemoryFd(memoryRegionId),
fdExchangeServer.GetSharedMemorySize(memoryRegionId));
memoryRegionId = new MemoryRegionId {
Type = MemoryRegionType.ControlChannel
};
SharedMemoryMapView controlChannelMemoryMapView = SharedMemoryMapView.OpenAnonymousFromFileDescriptor(
fdExchangeServer.GetSharedMemoryFd(memoryRegionId),
fdExchangeServer.GetSharedMemorySize(memoryRegionId));
memoryRegionId = new MemoryRegionId {
Type = MemoryRegionType.FeedbackChannel
};
SharedMemoryMapView feedbackChannelMemoryMapView = SharedMemoryMapView.OpenAnonymousFromFileDescriptor(
fdExchangeServer.GetSharedMemoryFd(memoryRegionId),
fdExchangeServer.GetSharedMemorySize(memoryRegionId));
memoryRegionId = new MemoryRegionId {
Type = MemoryRegionType.SharedConfig
};
SharedMemoryRegionView <MlosProxyInternal.SharedConfigMemoryRegion> sharedConfigMemoryRegionView =
SharedMemoryRegionView.OpenAnonymousFromFileDescriptor <MlosProxyInternal.SharedConfigMemoryRegion>(
fdExchangeServer.GetSharedMemoryFd(memoryRegionId),
fdExchangeServer.GetSharedMemorySize(memoryRegionId));
// Create channel synchronization primitives.
//
NamedEvent controlChannelNamedEvent = NamedEvent.CreateOrOpen(ControlChannelSemaphoreName);
NamedEvent feedbackChannelNamedEvent = NamedEvent.CreateOrOpen(FeedbackChannelSemaphoreName);
return(new AnonymousMemoryMlosContext(
globalMemoryRegionView,
controlChannelMemoryMapView,
feedbackChannelMemoryMapView,
sharedConfigMemoryRegionView,
controlChannelNamedEvent,
feedbackChannelNamedEvent,
fdExchangeServer));
}
/// <summary>
/// Create a new shared memory view.
/// </summary>
/// <param name="sharedMemoryMapName"></param>
/// <param name="sharedMemorySize"></param>
/// <returns></returns>
public static new SharedMemoryMapView CreateNew(string sharedMemoryMapName, ulong sharedMemorySize)
{
// Try to unlink existing shared memory.
//
_ = Native.SharedMemoryUnlink(sharedMemoryMapName);
// Create shared memory view.
//
var sharedMemoryMapView = new SharedMemoryMapView(
sharedMemoryMapName,
sharedMemorySize,
Native.OpenFlags.O_CREAT | Native.OpenFlags.O_RDWR | Native.OpenFlags.O_EXCL);
return(sharedMemoryMapView);
}
/// <summary>
/// Creates AnonymousMemoryMlosContext.
/// </summary>
/// <returns></returns>
public static AnonymousMemoryMlosContext Create()
{
var fdExchangeServer = new FileDescriptorExchangeServer(DefaultSocketFolderPath);
fdExchangeServer.HandleRequests();
SharedMemoryRegionView <MlosProxyInternal.GlobalMemoryRegion> globalMemoryRegionView =
SharedMemoryRegionView.OpenFromFileDescriptor <MlosProxyInternal.GlobalMemoryRegion>(
fdExchangeServer.GetSharedMemoryFd(GlobalMemoryMapName));
// Create channel synchronization primitives.
//
MlosProxyInternal.GlobalMemoryRegion globalMemoryRegion = globalMemoryRegionView.MemoryRegion();
// Control channel.
//
globalMemoryRegion.TryGetSharedMemoryName(
new MlosInternal.MemoryRegionId {
Type = MemoryRegionType.ControlChannel, Index = 0
},
out string sharedMemoryMapName);
SharedMemoryMapView controlChannelMemoryMapView = SharedMemoryMapView.OpenFromFileDescriptor(
fdExchangeServer.GetSharedMemoryFd(sharedMemoryMapName));
// Feedback channel.
//
globalMemoryRegion.TryGetSharedMemoryName(
new MlosInternal.MemoryRegionId {
Type = MemoryRegionType.FeedbackChannel, Index = 0
},
out sharedMemoryMapName);
SharedMemoryMapView feedbackChannelMemoryMapView = SharedMemoryMapView.OpenFromFileDescriptor(
fdExchangeServer.GetSharedMemoryFd(sharedMemoryMapName));
// Shared config.
//
globalMemoryRegion.TryGetSharedMemoryName(
new MlosInternal.MemoryRegionId {
Type = MemoryRegionType.SharedConfig, Index = 0
},
out sharedMemoryMapName);
SharedMemoryMapView sharedConfigMemoryMapView = SharedMemoryMapView.OpenFromFileDescriptor(
fdExchangeServer.GetSharedMemoryFd(sharedMemoryMapName));
var sharedConfigMemoryRegionView = new SharedMemoryRegionView <MlosProxyInternal.SharedConfigMemoryRegion>(sharedConfigMemoryMapView);
globalMemoryRegion.TryOpenExisting(
new MlosInternal.MemoryRegionId {
Type = MemoryRegionType.ControlChannel, Index = 0,
},
out NamedEvent controlChannelNamedEvent);
globalMemoryRegion.TryOpenExisting(
new MlosInternal.MemoryRegionId {
Type = MemoryRegionType.FeedbackChannel, Index = 0,
},
out NamedEvent feedbackChannelNamedEvent);
return(new AnonymousMemoryMlosContext(
globalMemoryRegionView,
controlChannelMemoryMapView,
feedbackChannelMemoryMapView,
sharedConfigMemoryRegionView,
controlChannelNamedEvent,
feedbackChannelNamedEvent,
fdExchangeServer));
}