Chris Copeland
3ecb30c92a
only decrement semaphore values unconditionally in syscalls
2024-05-13 22:32:15 -07:00
Chris Copeland
fb80a44d57
simplify rt_mutex_lock and rt_mutex_timedlock
2024-05-13 22:24:57 -07:00
Chris Copeland
0a3cf658e0
expand on comments about mutex priority donation
2024-05-13 00:28:48 -07:00
Chris Copeland
4af0fd555f
fix rt_mutex_unlock when used from an interrupt
2024-05-07 23:24:29 -07:00
Chris Copeland
57d472447b
fix rt_logf call in src/mutex.c
2024-04-29 09:22:46 -07:00
Chris Copeland
06cacd01ee
add thread-local storage support for arm
2024-04-27 01:23:37 -07:00
Chris Copeland
b0426a0d68
add rt_tick_elapse and use it in cond.c and rwlock.c
2024-04-19 06:32:46 -07:00
Chris Copeland
6d981b2b79
avoid extra load and eliminate stack usage in rt_task_sleep_periodic
2024-04-18 21:12:16 -07:00
Chris Copeland
53c48701dd
fix rt_mutex_timedlock and rt_sem_timedwait with 0 timeout
2024-04-18 21:06:08 -07:00
Chris Copeland
b9957f0957
remove rt_mutex_holder, avoid priority donation to an interrupt
2024-03-31 22:42:54 -07:00
Chris Copeland
5d9816bd4a
simplify LOCK and TIMEDLOCK syscalls to not also call wake_mutex_waiter
...
make interrupts use a specific holder value when acquiring a mutex
2024-03-31 18:36:20 -07:00
Chris Copeland
43f6125f17
fix RT_SYSCALL_EXIT after ready list refactor
...
previously exit implicitly made the task not runnable just by changing
its state, but now that active tasks remain in the ready list, an
exiting task must be explicitly removed
2024-03-22 10:36:48 -07:00
Chris Copeland
3cbea40dbd
refactor mpu.h some more and rename RT_MPU_ENABLE to RT_MPU_TASK_REGIONS_ENABLE
2024-03-17 02:45:13 -07:00
Chris Copeland
bb0f25cf7f
add more comments to wake_mutex_waiter
2024-03-14 03:18:40 -07:00
Chris Copeland
13df16bf59
remove insert helper function from list.c
2024-03-08 07:28:49 -08:00
Chris Copeland
7d0353b1d7
pass synchronous syscall arguments in registers
...
rt_syscall_op -> rt_syscall
split the syscall enum between synchronous and asynchronous syscalls
add explicit YIELD syscall enum
split blocking states by sem vs. mutex to simplify donation and timeouts
2024-03-08 00:28:27 -08:00
Chris Copeland
4cfc55f40a
use first_task->name in rt_start_context
2024-03-07 23:57:53 -08:00
Chris Copeland
bf6a52137c
fix ready list management on c28
2024-03-07 23:57:53 -08:00
Chris Copeland
82d9af898e
remove RT_SYSCALL_TASK_READY
...
have rust's task init add directly to ready lists, which themselves don't need a constructor anymore
2024-03-03 18:18:47 -08:00
Chris Copeland
8845d8d1b6
refactor ready list management and make lower priority numbers higher priority
2024-02-24 03:37:52 -08:00
Chris Copeland
75395d3301
explain more about priority donation on unlock
2024-02-23 02:31:39 -08:00
Chris Copeland
074fdc691a
add comment about the need for wake_mutex_waiter in the lock syscall handler
2024-02-23 02:31:39 -08:00
Chris Copeland
9be7eaa7e0
use acquire memory order in wake_sem_waiters
2024-02-22 07:46:07 -08:00
Chris Copeland
dd5438f39c
split rt_syscall_run into rt_syscall_run and rt_syscall_run_pending
...
rt_syscall now triggers a single syscall synchronously, masking the
pending syscall handler
split the svc and syscall irq handlers on arch/arm/ar
split the svcall and pendsv handlers on arch/arm/m
add a user1 interrupt handler on arch/c28
invoke synchronous syscalls directly in the active thread in arch/pthread
move rt_pending_syscalls to privileged .bss now that tasks don't need
to modify it
add alignment attribute to arm/ar interrupt handler macros
provide CPACR_FPU_ENABLE to assembler and initialize task's cpacr to the
processor's default, fpu-disabled, value rather than 0
don't yield for empty rt_pending_syscalls (yield is synchronous only)
add missing sigemptyset to block_all_signals
update arch/arm/README.md
2024-02-21 00:39:55 -08:00
Chris Copeland
6207eee9e4
split next_ready_task into a check and a get to avoid redundant NULL check in sched
2024-01-22 01:22:46 -08:00
Chris Copeland
947d61bcc5
add const to local in sched
2024-01-17 01:54:47 -08:00
Chris Copeland
a746c3cf6d
add const to locals in mutex_priority_greater_than
2024-01-17 01:36:18 -08:00
Chris Copeland
3df912ca2c
remove a compound conditional from sched by adding one to the next task's priority when yielding
2024-01-17 01:28:40 -08:00
Chris Copeland
b277bd976b
MAX_PRIORITY -> PRIORITY_MAX, add PRIORITY_MIN
2024-01-04 00:39:14 -08:00
Chris Copeland
8e38fc67e7
remove rt_list_for_each
2023-12-18 01:39:36 -08:00
Chris Copeland
2ba14d5f11
remove lock+unlock in rdunlock now that cond semaphores have a maximum of 1
2023-12-17 00:57:50 -08:00
Chris Copeland
fe61771778
use a normal binary semaphore for cond to allow a signal that happens before a cond_wait but after a condition check to be received
2023-12-10 22:28:29 -08:00
Chris Copeland
74f76b300e
arch/c28
2023-11-05 22:46:40 -08:00
Chris Copeland
28eb29e099
add src/assert.c, fix rt_atomic macro and use it for pointers also
2023-11-02 07:00:32 -07:00
Chris Copeland
a771ce3e43
add more includes that were previously implicit
2023-10-31 23:03:34 -07:00
Chris Copeland
2321d43661
move rt_once_call to once.c and remove rt_once_call_slow
2023-10-31 23:03:34 -07:00
Chris Copeland
7c691e5423
fix up includes
2023-10-31 23:03:34 -07:00
Chris Copeland
42783dfbb1
clear WRITE_PENDING_MASK on successful wrlock
2023-10-30 23:55:17 -07:00
Chris Copeland
ac741228c5
only have the last reader signal in rdunlock, add more comments
2023-10-30 00:43:11 -07:00
Chris Copeland
313bda2380
rework rwlock and add {try,timed}{rd,wr}lock add {rd,wr}unlock
2023-10-29 07:04:51 -07:00
Chris Copeland
4192c24579
rwlock.m -> rwlock.mutex
2023-10-28 12:30:10 -07:00
Chris Copeland
6bba1579dd
ticks_waited -> wait_ticks
2023-10-24 00:54:02 -07:00
Chris Copeland
65f051ca3b
add rt_mutex_holder function
2023-10-24 00:53:37 -07:00
Chris Copeland
78904add84
only initialize required fields of each rt_syscall_record
2023-10-22 11:55:43 -07:00
Chris Copeland
812117ff49
add recursive mutexes
2023-10-17 23:03:54 -07:00
Chris Copeland
d8182e4f1c
clean up comments, use #pragma once everywhere
2023-10-14 13:50:37 -07:00
Chris Copeland
b7625f8227
use rt_trap instead of infinite loop at end of rt_task_exit
2023-10-11 23:31:34 -07:00
Chris Copeland
c4abb96de1
refactor MPU interface, simplify start and unify creation of idle task
2023-10-10 23:09:58 -07:00
Chris Copeland
778399d0d3
refactor rt_syscall and rt_syscall_pend
...
make rt_syscall_pend work from interrupts and rt_syscall work from tasks
remove old rt_syscall_pend that works from both
rename enum rt_syscall to enum rt_syscall_op
2023-09-19 23:19:33 -07:00
Chris Copeland
1241b04575
use rt_syscall_pend_from_task in rt_mutex_unlock in the has-waiters path
2023-09-19 06:13:11 -07:00
Chris Copeland