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Rev Age Author Path Log message Diff
4267 5546 d 4 h svoboda /trunk/kernel/ str_ncpy() vs str_cpy(). TODO: The same in userspace.  
4220 5552 d 19 h decky /trunk/kernel/ update for string changes  
4013 5584 d 4 h svoboda /trunk/kernel/generic/ Didn't need strrcpy() afterall. Also remove strcpy() since strncpy() is better.  
4011 5584 d 5 h svoboda /trunk/kernel/ String functions should be declared in string.h (and implemented in string.c) in the kernel.  
3988 5585 d 5 h svoboda /trunk/kernel/generic/src/proc/ Fix misaligned columns (whoops).  
3987 5585 d 6 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 5585 d 12 h svoboda /trunk/ task_set_name() syscall so that we can have names (for userspace-loaded) tasks again.  
3908 5598 d 8 h decky /trunk/ overhaul pareas: use one single physical area for the physical address space not belonging to physical memory  
3620 5683 d 16 h svoboda /trunk/kernel/generic/ Move stuff related to kbox to a separate struct.  
3566 5698 d 17 h svoboda /trunk/ Set meaningful names for loaded programs. Now 'tasks' kconsole command is much less obscure.  
3438 5750 d 14 h svoboda /trunk/ Merge syscall tracer (trace) and relevant part of udebug interface from tracing to trunk.  
3359 5774 d 16 h jermar /trunk/kernel/generic/src/proc/ Improve comments in task.c  
3222 5821 d 11 h svoboda /trunk/ Merge program-loader related stuff from dynload branch to trunk. (huge)  
3186 5836 d 8 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 5845 d 15 h jermar /trunk/kernel/generic/src/proc/ Maintain cache coherence after sys_task_spawn() copies ELF image from user space.  
3063 5856 d 12 h decky /trunk/kernel/generic/src/proc/ support for SYS_SPAWN syscall
proper printf formatting
change the way init tasks are created
 
2802 5915 d 16 h jermar /trunk/kernel/generic/ Fix initialization of answerbox->task in ipc_answerbox_init.
Contributed by Jiri Svoboda.
 
2745 5953 d 15 h decky /trunk/ code cleanup (mostly signed/unsigned)
allow extra compiler warnings
 
2712 5979 d 12 h decky /trunk/kernel/ prettyprint output  
2632 6041 d 2 h decky /trunk/kernel/generic/src/proc/ try to kill the tasks fewer times by introducing a delay in iterations  
2504 6166 d 7 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 6224 d 11 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 6226 d 7 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 6277 d 20 h decky /trunk/kernel/ start shutdown infrastructure  
2216 6279 d 7 h decky /trunk/ make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls
 
2183 6281 d 10 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 6340 d 12 h decky /trunk/kernel/generic/src/ explicit typecast, fix signed/unsigned comparison  
2109 6341 d 15 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 6348 d 13 h decky /trunk/ huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes
 
2087 6349 d 9 h jermar /trunk/kernel/ Indentaion and formatting changes even Martin will like :-)  
2071 6359 d 6 h jermar /trunk/ (c) versus (C)  
2050 6388 d 16 h decky /trunk/kernel/ benchmarking with statistics (initial)  
2048 6391 d 8 h jermar /trunk/ Formatting and indentation changes.  
2042 6393 d 10 h decky /trunk/kernel/ introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again
 
2041 6393 d 11 h decky /trunk/kernel/generic/src/proc/ revert 2040  
2040 6393 d 13 h decky /trunk/kernel/generic/src/proc/ add forgotten btree_remove()  
2039 6393 d 14 h decky /trunk/kernel/generic/ accumulate task accounting, run tests as separate kernel task  
2035 6394 d 12 h decky /trunk/kernel/generic/src/ more fancy kconsole output  
2000 6409 d 16 h decky /trunk/kernel/ move files to more proper locations  
1880 6488 d 5 h jermar /trunk/ Small improvements here and there.