task.64.c File Reference

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.h>
#include <time/timer.h>
#include <logging.h>
#include <systeminfo.h>
#include <linker.h>
#include <utils.h>
#include <hashmap.h>
#include <stdbufs.h>
#include <hypervisor/hypervisor_vmxops.h>
#include <hypervisor/hypervisor_vm.h>
#include <hypervisor/hypervisor_macros.h>
#include <strings.h>
#include <spool.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)
static int8_t	task_sleep_queue_comparator (const void *item1, const void *item2)
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_task_switch_exit (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)
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.
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
memory_heap_t *	task_map_heap = NULL
memory_heap_t **	task_queue_and_cleanup_heaps = NULL
list_t **	task_queues = NULL
list_t **	task_sleep_queues
	task sleep lists
list_t **	task_wait_queues
	task wait lists
list_t **	task_cleanup_queues = NULL
hashmap_t *	task_map = NULL
uint32_t	task_mxcsr_mask = 0
uint64_t	task_max_tick_count_limit = 0
volatile uint64_t	time_timer_rdtsc_delta
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_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_get_current_task()

void * task_get_current_task

(

void

)

returns current task

Returns

current task

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_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