RTEMS: Thread-Local Storage (TLS)

| RTEMS 5.4-rc2

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Thread-Local Storage (TLS)
Internal » SuperCore

Thread-local storage (TLS) support. More...

## Files
file | tls.h
| Thread-Local Storage (TLS)

## Data Structures
struct | TLS_Dynamic_thread_vector
struct | TLS_Thread_control_block
struct | TLS_Index

## Typedefs
typedef struct TLS_Thread_control_block | TLS_Thread_control_block

## Functions
uintptr_t | _TLS_Get_allocation_size (void)
| Return the TLS area allocation size.

## Variables
char | _TLS_Data_begin []
char | _TLS_Data_end []
char | _TLS_Data_size []
char | _TLS_BSS_begin []
char | _TLS_BSS_end []
char | _TLS_BSS_size []
char | _TLS_Size []
char | _TLS_Alignment []
| The TLS section alignment.

## Detailed Description

Thread-local storage (TLS) support.

Variants I and II are according to Ulrich Drepper, "ELF Handling For Thread-Local Storage".

## Function Documentation

## ◆ _TLS_Get_allocation_size()

uintptr_t _TLS_Get_allocation_size | ( | void |  | ) |

Return the TLS area allocation size.

Returns
  The TLS area allocation size.

## Variable Documentation

## ◆ _TLS_Alignment

char _TLS_Alignment[]
| extern

The TLS section alignment.

This symbol is provided by the linker command file as the maximum alignment of the .tdata and .tbss sections. The linker ensures that the first TLS output section is aligned to the maximum alignment of all TLS output sections, see function _bfd_elf_tls_setup() in bfd/elflink.c of the GNU Binutils sources. The linker command file must take into account the case that the .tdata section is empty and the .tbss section is non-empty.