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Rev Age Author Path Log message Diff
4537 5674 d 15 h trochtova /branches/dd/ dd branch synchronized with trunk (revision 4536)  
4296 5734 d 8 h trochtova /branches/dd/ dd branch synchronized with trunk (revision 4295)  
4055 5773 d 12 h trochtova /branches/dd/ changes in trunk (rev 4054) merged into dd branch  
3022 6056 d 14 h decky /branches/dd/ device drivers branch  
2802 6110 d 14 h jermar /trunk/kernel/generic/ Fix initialization of answerbox->task in ipc_answerbox_init.
Contributed by Jiri Svoboda.		  
2745 6148 d 13 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings		  
2712 6174 d 11 h decky /trunk/kernel/ prettyprint output  
2632 6236 d 0 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6361 d 6 h jermar /trunk/kernel/generic/ Give the AVL tree walkers the possibility to take an argument.
Each walker is now supposed to return a bool value to support walk termination.

Switch over from the tasks_btree B+tree to tasks_tree AVL tree.
This makes the fix for ticket #48 complete.		  
2446 6419 d 9 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 6421 d 5 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 6472 d 19 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6474 d 5 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls		  
2183 6476 d 9 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 6535 d 10 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6536 d 13 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 6543 d 12 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2087 6544 d 8 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6554 d 4 h jermar /trunk/ (c) versus (C)  
2050 6583 d 15 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6586 d 6 h jermar /trunk/ Formatting and indentation changes.  
2042 6588 d 8 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again		  
2041 6588 d 9 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6588 d 11 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6588 d 12 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6589 d 10 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2000 6604 d 14 h decky /trunk/kernel/ move files to more proper locations  
1880 6683 d 4 h jermar /trunk/ Small improvements here and there.  
1864 6690 d 1 h jermar /trunk/ sparc64 update.
- Prototype userspace layer implementation that
at least relates to sparc64 and compiles cleanly.
- Fixes for kernel's preemptible_handler and code
related to running userspace.
- Enable userspace. Several dozen instructions
are now run in userspace! We are pretty near
the userspace milestone for sparc64.		  
1839 6719 d 9 h decky /trunk/kernel/generic/ finish security context isolation  
1820 6727 d 2 h decky /trunk/kernel/generic/ initial security context support  
1787 6744 d 7 h decky / move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot  
1780 6751 d 8 h jermar /kernel/trunk/ Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.).  
1757 6765 d 13 h jermar /kernel/trunk/ Cleanup of comments.  
1735 6767 d 14 h decky /kernel/trunk/ make kernel prints case consistent  
1702 6772 d 11 h cejka /kernel/trunk/ Kernel doxygen comments updated.  
1687 6775 d 11 h jermar /kernel/trunk/generic/src/proc/ Fix double thread_join() in ktaskgc.
In thread_create(), lock TASK with interrupts disabled again.
thread_join_timeout() can use ordinary waitq_sleep_timeout().		  
1684 6775 d 15 h jermar /kernel/trunk/ #ifdef more debugging printf()'s.  
1676 6776 d 12 h jermar /kernel/trunk/generic/src/proc/ Forgotten interrupts_restore().  
1661 6777 d 16 h jermar /kernel/trunk/generic/ Collect Undead threads while waiting to join uinit.
Rename ktaskkill to ktaskgc.