cpu task methods More...

#include <apic.h>
#include <cpu.h>
#include <cpu/cpu_state.h>
#include <cpu/interrupt.h>
#include <cpu/task.h>
#include <cpu/crx.h>
#include <cpu/sync.h>
#include <memory/paging.h>
#include <memory/frame.h>
#include <list.h>
#include <time/timer.h>
#include <logging.h>
#include <systeminfo.h>
#include <linker.h>
#include <utils.h>
#include <map.h>
#include <stdbufs.h>
#include <hypervisor/hypervisor_vmxops.h>
#include <hypervisor/hypervisor_vm.h>
#include <hypervisor/hypervisor_macros.h>
#include <strings.h>

Typedefs
typedef task_t (	memory_current_task_getter_f) (void)

typedef task_t (	lock_current_task_getter_f) (void)

typedef void(*	lock_task_yielder_f) (void)

typedef buffer_t (	stdbuf_task_buffer_getter_f) (void)

typedef void(*	future_task_wait_toggler_f) (uint64_t task_id)

Functions
	MODULE ("turnstone.kernel.cpu.task")

void	video_text_print (const char_t *str)

void	memory_set_current_task_getter (memory_current_task_getter_f getter)

int8_t	kmain64 (void)

int8_t	task_task_switch_isr (interrupt_frame_ext_t *frame)

void	task_save_registers (task_registers_t *registers)

void	task_load_registers (task_registers_t *registers)

void	task_cleanup (void)

task_t *	task_find_next_task (void)

void	task_idle_task (void)

int8_t	task_create_idle_task (void)

void	task_toggle_wait_for_future (uint64_t task_id)

task_t *	task_get_current_task (void)
	returns current task More...

int8_t	task_init_tasking_ext (memory_heap_t *heap)
	inits kernel tasking, configures tss and kernel task More...

int8_t	task_set_current_and_idle_task (void *entry_point, uint64_t stack_base, uint64_t stack_size)

static void	task_cleanup_task (task_t *task)

void	task_task_switch_set_parameters (boolean_t need_eoi, boolean_t need_sti)
	sets task switch parameters More...

static void	task_switch_task_exit_prep (void)

void	task_switch_task (void)
	switches current task to a new one.

void	task_end_task (void)

void	task_kill_task (uint64_t task_id, boolean_t force)

void	task_add_message_queue (list_t *queue)
	adds a queue to task More...

list_t *	task_get_message_queue (uint64_t task_id, uint64_t queue_number)

void	task_set_message_waiting (void)
	sets current task's message waiting flag

uint64_t	task_create_task (memory_heap_t heap, uint64_t heap_size, uint64_t stack_size, void entry_point, uint64_t args_cnt, void *args, const char_t task_name)
	creates a task and apends it to wait queue More...

void	task_yield (void)
	yields task for waiting other tasks.

uint64_t	task_get_id (void)
	returns current task's id More...

void	task_current_task_sleep (uint64_t wake_tick)
	sleep for current task for ticks More...

void	task_clear_message_waiting (uint64_t tid)
	clears current task's message waiting flag More...

void	task_set_interrupt_received (uint64_t tid)
	sets current task's interrupt received flag More...

void	task_set_interruptible (void)
	sets current task's interruptible flag

void	task_print_all (void)

buffer_t *	task_get_task_input_buffer (uint64_t tid)

buffer_t *	task_get_task_output_buffer (uint64_t tid)

buffer_t *	task_get_task_error_buffer (uint64_t tid)

buffer_t *	task_get_input_buffer (void)

buffer_t *	task_get_output_buffer (void)

buffer_t *	task_get_error_buffer (void)

int8_t	task_set_input_buffer (buffer_t *buffer)

int8_t	task_set_output_buffer (buffer_t *buffer)

int8_t	task_set_error_buffer (buffer_t *buffer)

void	task_set_vmcs_physical_address (uint64_t vmcs_physical_address)

uint64_t	task_get_vmcs_physical_address (void)

void	task_set_vm (void *vm)

void *	task_get_vm (void)

void	task_remove_task_after_fault (uint64_t task_id)

Variables
lock_current_task_getter_f	lock_get_current_task_getter

lock_task_yielder_f	lock_task_yielder

stdbuf_task_buffer_getter_f	stdbufs_task_get_input_buffer

stdbuf_task_buffer_getter_f	stdbufs_task_get_output_buffer

stdbuf_task_buffer_getter_f	stdbufs_task_get_error_buffer

future_task_wait_toggler_f	future_task_wait_toggler_func

buffer_t *	stdbufs_default_input_buffer

buffer_t *	stdbufs_default_output_buffer

buffer_t *	stdbufs_default_error_buffer

uint64_t	task_next_task_id = 0

lock_t *	task_next_task_id_lock = NULL

volatile boolean_t	task_tasking_initialized = false

list_t **	task_queues = NULL

list_t **	task_cleanup_queues = NULL

map_t	task_map = NULL

uint32_t	task_mxcsr_mask = 0

boolean_t	local_apic_id_is_valid

volatile cpu_state_t __seg_gs *	cpu_state

lock_t *	task_find_next_task_lock = NULL

static char_t	task_switch_task_id_buf [100] = {0}

Detailed Description

cpu task methods

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Function Documentation

◆ task_add_message_queue()

void task_add_message_queue ( list_t * queue )

adds a queue to task

Parameters

[in] queue queue which task will have. tasks consumes these queues

◆ task_clear_message_waiting()

void task_clear_message_waiting ( uint64_t task_id )

clears current task's message waiting flag

Parameters

[in] task_id task id

◆ task_create_task()

uint64_t task_create_task	(	memory_heap_t *	heap,
		uint64_t	heap_size,
		uint64_t	stack_size,
		void *	entry_point,
		uint64_t	args_cnt,
		void **	args,
		const char_t *	task_name
	)

creates a task and apends it to wait queue

Parameters

[in]	heap	creator heap
[in]	heap_size	task's heap size, heap allocated with frame allocator
[in]	stack_size	task's stack size, stack allocated with frame allocator
[in]	entry_point	task's entry point
[in]	args_cnt	argument count
[in]	args	argument list
[in]	task_name	task's name

◆ task_current_task_sleep()

void task_current_task_sleep ( uint64_t wake_tick )

sleep for current task for ticks

Parameters

[in] wake_tick tick count for sleep

◆ task_get_current_task()

void * task_get_current_task ( void )

returns current task

Returns: current task

◆ task_get_id()

uint64_t task_get_id ( void )

returns current task's id

Returns: task id

◆ task_init_tasking_ext()

int8_t task_init_tasking_ext ( memory_heap_t * heap )

inits kernel tasking, configures tss and kernel task

Parameters

[in] heap the heap of kernel task and tasking related variables.

◆ task_set_interrupt_received()

void task_set_interrupt_received ( uint64_t task_id )

sets current task's interrupt received flag

Parameters

[in] task_id task id

◆ task_task_switch_set_parameters()

void task_task_switch_set_parameters	(	boolean_t	need_eoi,
		boolean_t	need_sti
	)

sets task switch parameters

Parameters

[in]	need_eoi	if task switching needs notify local apic this field should be true
[in]	need_sti	if task switching needs enable interrupts this field should be true

Typedefs

Functions

Variables

Detailed Description

Function Documentation

◆ task_add_message_queue()

◆ task_clear_message_waiting()

◆ task_create_task()

◆ task_current_task_sleep()

◆ task_get_current_task()

◆ task_get_id()

◆ task_init_tasking_ext()

◆ task_set_interrupt_received()

◆ task_task_switch_set_parameters()