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#Linux thread kernel stack size drivers
#Linux thread kernel stack size driver
#Linux thread kernel stack size software
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#Linux thread kernel stack size drivers

To get notifications about thread creation/deletion, drivers can call PsSetCreateThreadNotifyRoutineEx, and specify PsCreateThreadNotifySubsystems as the type of notification.

Other kernel mode drivers can get notified about subsystem process creation/deletion by registering their callback routine through the PsSetCreateProcessNotifyRoutineEx2 call.

Those calls return SubsystemInformationTypeWSL for WSL. Drivers can call NtQueryInformationProcess and NtQueryInformationThread to determine the underlying subsystem.

The WSL type is indicated by the SubsystemInformationTypeWSL value in the SUBSYSTEM_INFORMATION_TYPE enumeration.

Here are the changes to the Process and Thread Manager Routines in order to support subsystem processes: For a subsystem process, system calls and user mode exceptions are dispatched to a paired driver. Subsystem processes do not contain data structures associated with Win32 processes, such as Process Environment Block (PEB) and Thread Environment Block (TEB). One of the components is a subsystem process that hosts the unmodified user-mode Linux binary, such as /bin/bash.

#Linux thread kernel stack size windows

For information about WSL architecture and the user-mode and kernel-mode components that are required to run the binaries, see the posts on the Windows Subsystem for Linux blog. Starting in Windows 10, the Windows Subsystem for Linux (WSL) enables a user to run native Linux ELF64 binaries on Windows, alongside other Windows applications.

#Linux thread kernel stack size driver

For examples, see How do I keep my driver from running out of kernel-mode stack? and Key Driver Concepts and Tips.

Be considerate of best practices for kernel mode stack usage.

Doing so defeats the purpose of queuing the work to be completed asynchronously.

If you use System Worker Threads do not wait on the work to complete.

Any blocking behavior which could interrupt threads in core services.

Slow API’s or API’s that call into other process.

Use System Worker Threads to queue work especially work involving:.

Do not synchronize with other threads because it can lead to reentrancy deadlocks.

Do not make blocking and/or Interprocess Communication (IPC) function calls.

Do not make calls into a user mode service to validate the process, thread, or image.

This set of guidelines applies to these callback routines: Best practices for implementing process and thread-related callback functions For a list of kernel DDIs, see Windows kernel.

Routines that provide a direct interface to the process and thread manager are usually prefixed with the letters " Ps" for example, PsCreateSystemThread. For more information about synchronization, see Synchronization Techniques. The technique of making sure that threads from different processes do not touch the same resource is called synchronization. Windows provides several techniques to avoid this problem. If threads from different processes attempt to use the same resource at the same time, problems can occur. Whether you have one processor or more, great care must be taken in driver programming to make sure that all threads of your process are designed so that no matter what order the threads are handled, your driver will operate properly.

The Windows kernel-mode process and thread manager handles the execution of all threads in a process. If an application has multiple threads, the threads can run simultaneously on different processors. On a machine with more than one processor, true multi-threading can take place. Each thread only runs a short time and then the execution is passed on to the next thread, giving the user the illusion that more than one thing is happening at once. On a machine with one processor, more than one thread can be allocated, but only one thread can run at a time. The purpose of a thread is to allocate processor time. Each thread has an ID, a number that identifies it.Ī process may have more than one thread. A thread is an object that identifies which part of the program is running.

Every process has an ID, a number that identifies it.

#Linux thread kernel stack size software

A process is a software program that is currently running in Windows.