scheduler.c File Reference

ICARUS Scheduler Implementation. More...

#include "icarus/scheduler.h"
#include "icarus/kernel.h"
#include "bsp/config.h"
#include <stddef.h>
#include "stm32h7xx.h"

Go to the source code of this file.

Functions
uint32_t	__os_get_tick_count (void)
	Privileged implementation of os_get_tick_count.
uint8_t	__os_get_running_task_count (void)
	Privileged implementation of os_get_running_task_count.
const char *	__os_get_current_task_name (void)
	Privileged implementation of os_get_current_task_name.
uint32_t	__os_get_task_ticks_remaining (void)
	Privileged implementation of os_get_task_ticks_remaining.
void	__os_yield (void)
	Privileged implementation of os_yield.
uint32_t	__task_active_sleep (uint32_t ticks)
	Privileged implementation of task_active_sleep.
uint32_t	__task_blocking_sleep (uint32_t ticks)
	Privileged implementation of task_blocking_sleep.
uint32_t	__task_busy_wait (uint32_t ticks)
	Privileged implementation of task_busy_wait.

Variables
static char	task_name_buffer [32]

Detailed Description

ICARUS Scheduler Implementation.

Version

0.1.0

Task scheduling, yielding, and sleep functions.

Author

Souham Biswas

Date

2025

Copyright

Copyright 2025-2026 Souham Biswas https://github.com/ironhide23586/icarus-os-core Licensed under the Apache License, Version 2.0

Definition in file scheduler.c.

Function Documentation

__os_get_current_task_name()

const char * __os_get_current_task_name

(

void

)

Privileged implementation of os_get_current_task_name.

Note

Internal function - use os_get_current_task_name() wrapper

Copies name from DTCM to RAM_D1 buffer for unprivileged access

Definition at line 65 of file scheduler.c.

References current_task_index, ICARUS_MAX_TASK_NAME_LEN, icarus_task_t::name, num_created_tasks, task_list, and task_name_buffer.

Referenced by os_get_current_task_name(), and SVC_Handler_C().

__os_get_running_task_count()

uint8_t __os_get_running_task_count

(

void

)

Privileged implementation of os_get_running_task_count.

Note

Internal function - use os_get_running_task_count() wrapper

Definition at line 56 of file scheduler.c.

References running_task_count.

Referenced by os_get_running_task_count(), and SVC_Handler_C().

__os_get_task_ticks_remaining()

uint32_t __os_get_task_ticks_remaining

(

void

)

Privileged implementation of os_get_task_ticks_remaining.

Note

Internal function - use os_get_task_ticks_remaining() wrapper

Definition at line 87 of file scheduler.c.

References current_task_ticks_remaining.

Referenced by os_get_task_ticks_remaining(), and SVC_Handler_C().

__os_get_tick_count()

uint32_t __os_get_tick_count

(

void

)

Privileged implementation of os_get_tick_count.

Note

Internal function - use os_get_tick_count() wrapper

Definition at line 48 of file scheduler.c.

References os_tick_count.

Referenced by os_get_tick_count(), and SVC_Handler_C().

__os_yield()

void __os_yield

(

void

)

Privileged implementation of os_yield.

Note

Internal function - use os_yield() wrapper

Definition at line 99 of file scheduler.c.

References current_task_ticks_remaining, and ticks_per_task.

Referenced by __os_exit_task(), __os_kill_process(), __task_active_sleep(), os_yield(), and SVC_Handler_C().

__task_active_sleep()

uint32_t __task_active_sleep

(

uint32_t

ticks

)

Privileged implementation of task_active_sleep.

Note

Internal function - use task_active_sleep() wrapper

Definition at line 108 of file scheduler.c.

References __os_yield(), current_task_index, icarus_task_t::global_tick_paused, os_tick_count, task_list, icarus_task_t::task_state, TASK_STATE_BLOCKED, and icarus_task_t::ticks_to_pause.

Referenced by SVC_Handler_C(), and task_active_sleep().

__task_blocking_sleep()

uint32_t __task_blocking_sleep

(

uint32_t

ticks

)

Privileged implementation of task_blocking_sleep.

Note

Internal function - use task_blocking_sleep() wrapper

Spin-wait calls public SVC wrappers — only safe from thread mode

Definition at line 121 of file scheduler.c.

References enter_critical(), exit_critical(), and task_busy_wait().

Referenced by task_blocking_sleep().

__task_busy_wait()

uint32_t __task_busy_wait

(

uint32_t

ticks

)

Privileged implementation of task_busy_wait.

Note

Internal function - use task_busy_wait() wrapper

Uses os_get_tick_count() SVC gate — safe with DTCM priv-only

Definition at line 133 of file scheduler.c.

References os_get_tick_count(), and os_tick_count.

Referenced by task_busy_wait().

Variable Documentation

task_name_buffer

char task_name_buffer[32]

static

Definition at line 39 of file scheduler.c.

Referenced by __os_get_current_task_name().