| Rev |
Age |
Author |
Path |
Log message |
Diff |
| 2446 |
6198 d 0 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 |
6199 d 20 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 |
6251 d 10 h |
decky |
/trunk/kernel/ |
start shutdown infrastructure |
|
| 2216 |
6252 d 20 h |
decky |
/trunk/ |
make thread ID 64 bit (task ID is 64 bit already)
cleanup thread syscalls |
|
| 2183 |
6255 d 0 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 1 h |
decky |
/trunk/kernel/generic/src/ |
explicit typecast, fix signed/unsigned comparison |
|
| 2109 |
6315 d 4 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 3 h |
decky |
/trunk/ |
huge type system cleanup
remove cyclical type dependencies across multiple header files
many minor coding style fixes |
|
| 2087 |
6322 d 22 h |
jermar |
/trunk/kernel/ |
Indentaion and formatting changes even Martin will like :-) |
|
| 2071 |
6332 d 19 h |
jermar |
/trunk/ |
(c) versus (C) |
|
| 2050 |
6362 d 6 h |
decky |
/trunk/kernel/ |
benchmarking with statistics (initial) |
|
| 2048 |
6364 d 21 h |
jermar |
/trunk/ |
Formatting and indentation changes. |
|
| 2042 |
6366 d 23 h |
decky |
/trunk/kernel/ |
introduce uncounted threads, whose accounting doesn't affect accumulated task accounting
run tests in kconsole thread again |
|
| 2041 |
6367 d 0 h |
decky |
/trunk/kernel/generic/src/proc/ |
revert 2040 |
|
| 2040 |
6367 d 2 h |
decky |
/trunk/kernel/generic/src/proc/ |
add forgotten btree_remove() |
|
| 2039 |
6367 d 3 h |
decky |
/trunk/kernel/generic/ |
accumulate task accounting, run tests as separate kernel task |
|
| 2035 |
6368 d 1 h |
decky |
/trunk/kernel/generic/src/ |
more fancy kconsole output |
|
| 2000 |
6383 d 5 h |
decky |
/trunk/kernel/ |
move files to more proper locations |
|
| 1880 |
6461 d 19 h |
jermar |
/trunk/ |
Small improvements here and there. |
|
| 1864 |
6468 d 16 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 |
6498 d 0 h |
decky |
/trunk/kernel/generic/ |
finish security context isolation |
|
| 1820 |
6505 d 17 h |
decky |
/trunk/kernel/generic/ |
initial security context support |
|
| 1787 |
6522 d 22 h |
decky |
/ |
move kernel/trunk, uspace/trunk and boot/trunk to trunk/kernel, trunk/uspace and trunk/boot |
|
| 1780 |
6529 d 23 h |
jermar |
/kernel/trunk/ |
Replace old __u?? types with respective C99 variants (e.g. uint32_t, int64_t, uintptr_t etc.). |
|
| 1757 |
6544 d 4 h |
jermar |
/kernel/trunk/ |
Cleanup of comments. |
|
| 1735 |
6546 d 5 h |
decky |
/kernel/trunk/ |
make kernel prints case consistent |
|
| 1702 |
6551 d 2 h |
cejka |
/kernel/trunk/ |
Kernel doxygen comments updated. |
|
| 1687 |
6554 d 2 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 |
6554 d 6 h |
jermar |
/kernel/trunk/ |
#ifdef more debugging printf()'s. |
|
| 1676 |
6555 d 2 h |
jermar |
/kernel/trunk/generic/src/proc/ |
Forgotten interrupts_restore(). |
|
| 1661 |
6556 d 7 h |
jermar |
/kernel/trunk/generic/ |
Collect Undead threads while waiting to join uinit.
Rename ktaskkill to ktaskgc. |
|
| 1636 |
6557 d 15 h |
jermar |
/kernel/trunk/ |
Move comment.
Do TLB shootdown also when allocating new ASID. |
|
| 1600 |
6558 d 7 h |
jermar |
/kernel/trunk/generic/src/proc/ |
Prevent task killing of kernel by returning EPERM on such a request. |
|
| 1597 |
6558 d 8 h |
palkovsky |
/kernel/trunk/ |
Added possibility to interrupt task at exit from interrupt routine. |
|
| 1589 |
6558 d 21 h |
jermar |
/kernel/trunk/generic/src/ |
Improve comments regarding liveliness of threads and tasks. |
|
| 1588 |
6558 d 22 h |
jermar |
/kernel/trunk/generic/src/ |
In task_kill(), remove the task from the tasks_btree before proceeding.
Thus, when the kernel finds the task in the tasks_btree and locks it before
releasing tasks_lock, it is guaranteed that the task will not be destroyed
until the lock is held. If the kernel needs to unlock the task, do some operation
and lock it again, it should increase its refcount before doing so. In that case,
when releasing the lock, it must decrement the refcount and if it reaches
zero, it must call task_destroy(). |
|
| 1587 |
6558 d 23 h |
jermar |
/kernel/trunk/ |
task_destroy() implementation, fixes in as_destroy() and task_kill().
This is the first version of HelenOS that would perform complete cleanup leading from thread to destruction of address space. |
|
| 1585 |
6559 d 2 h |
jermar |
/kernel/trunk/generic/ |
Kill task when its main thread exits. |
|
| 1583 |
6559 d 5 h |
jermar |
/kernel/trunk/generic/ |
Make ktaskclnp call ipc_cleanup and futex_cleanup. |
|
| 1580 |
6559 d 8 h |
jermar |
/kernel/trunk/generic/src/ |
Update for task_kill(). |
|