Matthew Leach
69f50fef18
sched: fix futures race-condition
...
When a future returns `Poll::Pending`, there is a window where, if a
waker is called, prior to the sched code setting the task's state to
`Sleeping`, the wake-up could be lost. We get around this by
introducing a new state `Woken`.
A waker will set a `Running` task to this state. The sched code then
detects this and *does not* set the task's state to `Sleeping`, instead
it leaves it as running and attempts to re-schedule.
2025-12-24 18:44:41 -08:00
Matthew Leach
bd21276368
sched: don't bother with pointless state update
...
The caller of `switch_to_task` should have already set the task's state
to `Runnable` for it to be considered in this time slice. Ensure that is
the case with a debug_assert.
2025-12-24 18:44:41 -08:00
Matthew Leach
2e8871840d
sched: ensure task is running when re-running same task
...
When scheduling the same task to be run, ensure that the state is set to
`Running` as it will have been set to `Runnable` before entering this
function call.
2025-12-24 18:44:41 -08:00
Matthew Leach
6abdbbb6d5
sched: move last_run update into switch_to_task
2025-12-24 18:44:41 -08:00
Ashwin Naren
7122429a20
dispatch signals ( #85 )
2025-12-24 12:54:40 -08:00
someone
2a1bb1cdde
implement hardlinking ( #88 )
2025-12-24 09:43:12 -08:00
Matthew Leach
5259654e36
usertest: add test_clock_sleep ( #87 )
...
Add a test to ensure sleeping and clock getttime functions are correct.
2025-12-24 09:40:13 -08:00
Matthew Leach
efe34026fa
Merge pull request #81 from arihant2math/mutex-timeouts
2025-12-24 08:08:20 +00:00
Matthew Leach
1d25f0d292
apply fix
2025-12-24 00:02:29 -08:00
someone
877dc9bf2e
Implement sys_truncate ( #86 )
2025-12-23 22:08:16 -08:00
someone
3aef9a4e15
add chown/chmod ( #84 )
2025-12-23 15:19:25 -08:00
Ashwin Naren
c4f1d9acf5
support timeouts for futex
2025-12-23 13:08:37 -08:00
Ashwin Naren
888c099072
implement sys_sched_yield
2025-12-23 12:46:26 -08:00
Matthew Leach
88549fee5a
sys_set_tid_address: finish implementation
...
Now CLONE_CHILD_CLEARTID has been implemented properly, we can finish
the implementation of `sys_set_tid_address`.
2025-12-23 11:28:44 -08:00
Matthew Leach
91c40c92ae
usertest: add test_rust_mutex
...
Add a function to stress-test the kernels futex implementation.
2025-12-23 11:28:29 -08:00
Matthew Leach
6bada491b6
futex: check value while queue locked
...
Lock the futex queue when checking the value to ensure atomicity.
2025-12-23 10:21:30 -08:00
Matthew Leach
f7a02c6ccb
libkernel: wakerset: add contains_token
...
Add a way to check whether the wakerset contains a token.
2025-12-23 10:21:30 -08:00
Matthew Leach
957b28e8a7
uaccess: implement try_copy_from_user
...
Implement a new function, `try_copy_from_user` which will not sleep when
a fault occures, making it safe to be called while a spinlock has been
acquired.
2025-12-23 10:21:30 -08:00
Matthew Leach
ca787aa4c3
libkernel: waker_set: return whether a waker was woken
...
Make `wake_one()` return `true` indicating whether a waker was woken
from the set, `false` otherwise.
2025-12-23 10:21:30 -08:00
Ashwin Naren
78440f292b
update dependencies
2025-12-23 00:01:45 -08:00
Matthew Leach
8af3653e60
Merge pull request #76 from some100/master
2025-12-23 06:46:59 +00:00
ootinnyoo
8f00af7587
implement sys_fchdir
2025-12-22 18:34:22 -05:00
Matthew Leach
1dd1811f34
Merge pull request #75 from arihant2math/fix-thread-join
2025-12-22 17:36:48 +00:00
Ashwin Naren
2cb93c0891
address review
2025-12-22 02:06:11 -08:00
Ashwin Naren
8bf0a72bce
fix futex based thread joining
2025-12-21 17:02:19 -08:00
Matthew Leach
e77742e029
aarch64: syscalls: clone: fix arg order
...
The clone syscal on aarch64 is the following:
```
SYS_clone, flags, stack, ptid, tls, ctid
x8, x0, x1, x2, x3, x4
```
which is a different order than listed on the man page. Fix the ordering
in the aarch64 syscall dispatch code.
2025-12-21 16:13:15 -08:00
Matthew Leach
3273d6451e
clone: implement CLONE_SETTLS
...
Set the TLS pointer when `CLONE_SETTLS` is set in `sys_clone`.
2025-12-21 16:13:15 -08:00
Matthew Leach
12076c7ad2
usertest: add test_rust_thread
...
Add a simple thread spawn test.
2025-12-21 16:13:15 -08:00
Matthew Leach
a7ebe8e214
threading: fix clone to spawn threads
...
Fix issues identify in `sys_clone` logic to enable basic threading.
2025-12-21 16:13:15 -08:00
Matthew Leach
eb2369f621
Merge pull request #57 from arihant2math/futex
2025-12-21 13:30:40 +00:00
Matthew Leach
03a400d2bd
Merge pull request #72 from some100/master
2025-12-21 13:30:05 +00:00
Ashwin Naren
637874620b
address review
2025-12-21 01:56:33 -08:00
Ashwin Naren
73b9afc2f0
remove redundant rust mutex test
2025-12-21 01:44:30 -08:00
Ashwin Naren
f004824bbd
make clippy happy
2025-12-21 01:43:54 -08:00
Ashwin Naren
b7e8e9edcc
add note
2025-12-21 01:43:54 -08:00
Ashwin Naren
a6efc75686
final fixes
2025-12-21 01:43:54 -08:00
Ashwin Naren
d60e70e397
add another usertest
...
Conflicts:
usertest/src/main.rs
2025-12-21 01:43:54 -08:00
Ashwin Naren
93df6b0ebc
get data w/ spinlock
2025-12-21 01:43:54 -08:00
Ashwin Naren
cb6dbdf5bb
futex impl
2025-12-21 01:43:54 -08:00
Ashwin Naren
3fbb56098c
futex impl
...
# Conflicts:
# usertest/src/main.rs
2025-12-21 01:43:54 -08:00
Ashwin Naren
cd6d830ae9
Initial proc fs ( #70 )
2025-12-21 01:37:14 -08:00
ootinnyoo
237ab737df
implement sys_chroot
2025-12-20 19:06:07 -05:00
Ashwin Naren
35a6caa541
Implement sys_sysinfo ( #71 )
2025-12-20 15:42:08 -08:00
Ashwin Naren
b98a54b928
Stub sys_madvise ( #67 )
2025-12-19 15:28:43 -08:00
Ashwin Naren
fd65436604
Add rust file/dir usertest ( #65 )
2025-12-18 16:19:42 -08:00
Ashwin Naren
781b9b5c3f
implement mkdir and unlink
...
rm, mkdir and rmdir now work in tmpfs
2025-12-18 15:35:09 +00:00
Ashwin Naren
b8ad29b4b1
update .gitignore
2025-12-17 20:07:53 -08:00
Matthew Leach
9db6162414
formatting
2025-12-17 20:04:31 -08:00
Matthew Leach
0a32eeaaa0
scripts: create /tmp
...
Create /tmp and modify the kernel command line to mount tmpfs on /tmp.
2025-12-17 20:04:31 -08:00
Matthew Leach
5511e28b72
syscalls: implement ftruncate
2025-12-17 20:04:31 -08:00
