Struct ThreadLocalStorage 

pub struct ThreadLocalStorage {
    pub base: usize,
    pub size: usize,
    pub data_ptr: usize,
    pub data: BTreeMap<u64, u64>,
}

Thread Local Storage (TLS) data

Fields

base: usize

TLS base address

size: usize

TLS size in bytes

data_ptr: usize

TLS data pointer (architecture-specific)

data: BTreeMap<u64, u64>

TLS key-value data storage

Implementations

impl ThreadLocalStorage

pub fn new() -> Self

Create new TLS area

pub fn allocate(&mut self, size: usize) -> Result<(), KernelError>

Allocate TLS area backed by real physical frames.

Allocates enough physical frames to cover size bytes. The TLS base address is set to the physical frame address (which is identity-mapped in kernel space). The allocated memory is logically zero-filled (.tbss equivalent).

pub fn install_base(&mut self, base: usize)

Install a user-provided TLS base (arch_prctl/TPIDR_EL0/tp).

pub fn set_tls_base(&mut self, base: usize)

Set architecture TLS base register value (for user mode)

pub fn tls_base(&self) -> usize

Get TLS base register value

pub fn set_value(&mut self, key: u64, value: u64)

Set TLS value for key

pub fn get_value(&self, key: u64) -> Option<u64>

Get TLS value for key

pub fn remove_value(&mut self, key: u64) -> Option<u64>

Remove TLS value for key

pub fn keys(&self) -> impl Iterator<Item = &u64>

Get all TLS keys

pub fn activate_tls_register(&self)

Set the architecture-specific TLS base register.

On x86_64, sets FS base (via WRFSBASE or MSR). On AArch64, sets TPIDR_EL0. On RISC-V, sets the tp register.

This should be called during context switch or thread initialization to point the hardware TLS register to this thread’s TLS area.

Trait Implementations

impl Default for ThreadLocalStorage

fn default() -> Self

Returns the “default value” for a type.