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Rev Age Author Path Log message Diff
3597 5695 d 21 h svoboda /branches/tracing/ Merge latest trunk changes into tracing.  
3431 5760 d 22 h svoboda /branches/tracing/kernel/ Add configuration option CONFIG_UDEBUG to compile udebug in the kernel or not.  
3426 5761 d 9 h svoboda /branches/tracing/kernel/generic/src/ Fix compile errors.  
3425 5761 d 9 h svoboda /branches/tracing/ Merge latest trunk changes into tracing (broken)  
3424 5761 d 21 h svoboda /branches/tracing/ Merge trunk changes up to r3180 into tracing  
3035 5869 d 7 h svoboda /branches/tracing/kernel/generic/ Use thread_join() to wait for kbox thread termination, instead of specific wait queue.  
3034 5869 d 9 h svoboda /branches/tracing/kernel/generic/ Convert kb_cleanup_lock to a mutex  
3014 5872 d 10 h svoboda /branches/tracing/kernel/generic/ Isolate udebug-related task_t fields into udebug_task_t.  
2902 5888 d 9 h svoboda /branches/tracing/kernel/generic/ Implement proper kbox thread shutdown, with all bells and whistles. Use THREAD->debug_active in udebug_stoppable_xx() and friends  
2899 5888 d 22 h svoboda /branches/tracing/ Add support for SET_EVMASK debug operation  
2839 5918 d 1 h svoboda /branches/tracing/kernel/generic/ Add thread_attach_by_id() and use it to do ipc_connect_kbox() with proper locking  
2826 5922 d 9 h svoboda /branches/tracing/kernel/generic/ Move debug_go_call from task struct to thread struct  
2825 5922 d 9 h svoboda /branches/tracing/kernel/generic/ Introduce task debug-states (udebug_task_state_t)  
2808 5923 d 23 h svoboda /branches/tracing/ add kernel answerbox+thread to mediate access to task's memory  
2804 5925 d 5 h svoboda /branches/tracing/kernel/generic/ allow for attaching to tasks with sleeping threads  
2803 5925 d 6 h svoboda /branches/tracing/kernel/generic/src/proc/ fix: initialize debug fields in task structure  
2800 5925 d 10 h svoboda /branches/tracing/kernel/generic/ [tracing] fix initialiation of answerbox->task in ipc_answerbox_init  
2799 5925 d 10 h svoboda /branches/tracing/ Revert all changes in tracing branch (sync to r2785 of trunk)  
2787 5934 d 3 h decky /branches/tracing/ add dynamic linking, debugging and tracing branch  
2745 5963 d 7 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings		  
2712 5989 d 5 h decky /trunk/kernel/ prettyprint output  
2632 6050 d 18 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6176 d 0 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 6234 d 3 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 6235 d 23 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 6287 d 13 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6288 d 23 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls		  
2183 6291 d 3 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 6350 d 4 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6351 d 7 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 6358 d 6 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2087 6359 d 2 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6368 d 22 h jermar /trunk/ (c) versus (C)  
2050 6398 d 9 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6401 d 0 h jermar /trunk/ Formatting and indentation changes.  
2042 6403 d 2 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again		  
2041 6403 d 3 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6403 d 5 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6403 d 6 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6404 d 4 h decky /trunk/kernel/generic/src/ more fancy kconsole output