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Rev Age Author Path Log message Diff
4267 5554 d 13 h svoboda /trunk/kernel/ str_ncpy() vs str_cpy(). TODO: The same in userspace.  
4220 5561 d 4 h decky /trunk/kernel/ update for string changes  
4013 5592 d 13 h svoboda /trunk/kernel/generic/ Didn't need strrcpy() afterall. Also remove strcpy() since strncpy() is better.  
4011 5592 d 14 h svoboda /trunk/kernel/ String functions should be declared in string.h (and implemented in string.c) in the kernel.  
3988 5593 d 14 h svoboda /trunk/kernel/generic/src/proc/ Fix misaligned columns (whoops).  
3987 5593 d 15 h svoboda /trunk/kernel/ Read command line for multiboot modules on ia32 and copy it to task name. Other arches will need to initialize task names in the init structure to an empty string.  
3983 5593 d 21 h svoboda /trunk/ task_set_name() syscall so that we can have names (for userspace-loaded) tasks again.  
3908 5606 d 17 h decky /trunk/ overhaul pareas: use one single physical area for the physical address space not belonging to physical memory  
3620 5692 d 1 h svoboda /trunk/kernel/generic/ Move stuff related to kbox to a separate struct.  
3566 5707 d 2 h svoboda /trunk/ Set meaningful names for loaded programs. Now 'tasks' kconsole command is much less obscure.  
3438 5758 d 23 h svoboda /trunk/ Merge syscall tracer (trace) and relevant part of udebug interface from tracing to trunk.  
3359 5783 d 1 h jermar /trunk/kernel/generic/src/proc/ Improve comments in task.c  
3222 5829 d 20 h svoboda /trunk/ Merge program-loader related stuff from dynload branch to trunk. (huge)  
3186 5844 d 17 h jermar /trunk/kernel/ Support for active mutexes. Active mutexes implement busy waiting, pretty much
in the same way as spinlocks, but can be passed to condition variables, which is
the motivation for this enhancement.		  
3137 5854 d 0 h jermar /trunk/kernel/generic/src/proc/ Maintain cache coherence after sys_task_spawn() copies ELF image from user space.  
3063 5864 d 21 h decky /trunk/kernel/generic/src/proc/ support for SYS_SPAWN syscall
proper printf formatting
change the way init tasks are created		  
2802 5924 d 1 h jermar /trunk/kernel/generic/ Fix initialization of answerbox->task in ipc_answerbox_init.
Contributed by Jiri Svoboda.		  
2745 5962 d 0 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings		  
2712 5987 d 22 h decky /trunk/kernel/ prettyprint output  
2632 6049 d 11 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6174 d 16 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 6232 d 20 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 6234 d 16 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 6286 d 6 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6287 d 16 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls		  
2183 6289 d 20 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 6348 d 21 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6350 d 0 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 6356 d 22 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes		  
2087 6357 d 18 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6367 d 15 h jermar /trunk/ (c) versus (C)  
2050 6397 d 2 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6399 d 17 h jermar /trunk/ Formatting and indentation changes.  
2042 6401 d 19 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again		  
2041 6401 d 20 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6401 d 22 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6401 d 23 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6402 d 21 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2000 6418 d 1 h decky /trunk/kernel/ move files to more proper locations  
1880 6496 d 14 h jermar /trunk/ Small improvements here and there.