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2474 6181 d 9 h jermar /tags/0.2.0.5/ Add tag for HelenOS 0.2.0.5.  
2446 6198 d 15 h jermar /trunk/kernel/generic/ More efficient and simpler task termination.

Based on the assumption, that after its creation, only the task itself can create more threads for itself,
the last thread with userspace context to execute thread_exit() will perform futex and IPC cleanup. When
the task has no threads, it is destroyed. Both the cleanup and destruction is controlled by reference
counting.

As for userspace threads, even though there could be a global garbage collector for joining threads, it is
much simpler if the uinit thread detaches itself before switching to userspace.

task_kill() is now an idempotent operation. It just instructs the threads within a task to exit.

Change in the name of a thread state: Undead -> JoinMe.
 
2436 6200 d 11 h jermar /trunk/ Fix two memory leaks.

In kernel, kernel_uarg structure needs to be deallocated when a thread
with userspace context is destroyed.

In userspace, the return value of the SYS_THREAD_CREATE must be checked
for error conditions and in case of error, uarg and stack must be freed
up.
 
2227 6252 d 0 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6253 d 10 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2183 6255 d 14 h jermar /trunk/kernel/generic/ Continue to de-oversynchronize the kernel.
- replace as->refcount with an atomic counter; accesses to this
reference counter are not to be done when the as->lock mutex is held;
this gets us rid of mutex_lock_active();

Remove the possibility of a deadlock between TLB shootdown and asidlock.
- get rid of mutex_lock_active() on as->lock
- when locking the asidlock spinlock, always do it conditionally and with
preemption disabled; in the unsuccessful case, enable interrupts and try again
- there should be no deadlock between TLB shootdown and the as->lock mutexes
- PLEASE REVIEW !!!

Add DEADLOCK_PROBE's to places where we have spinlock_trylock() loops.
 
2118 6314 d 15 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6315 d 19 h jermar /trunk/kernel/generic/ Revert thread_interrupt_sleep() to waitq_interrupt_sleep().
I'd prefer that this, IMO, waitq related stuff stays together.
 
2089 6322 d 17 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6323 d 13 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6333 d 10 h jermar /trunk/ (c) versus (C)  
2050 6362 d 20 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6365 d 11 h jermar /trunk/ Formatting and indentation changes.  
2042 6367 d 14 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again
 
2041 6367 d 15 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6367 d 17 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6367 d 18 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6368 d 16 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2000 6383 d 19 h decky /trunk/kernel/ move files to more proper locations  
1880 6462 d 9 h jermar /trunk/ Small improvements here and there.  

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