B_ QuRT_ User_ Guide(28)

17.11 qurt_interrupt_get_status()

17.11.1 Function document

17.11.1.1 unsigned int qurt_interrupt_get_status ( int int_num, int status_type, int ∗ status )

obtain L2VIC State of the interrupt specified in .
Parameters

Return value
QURT_EOK - success .
QURT_EINT - Failure ; Invalid interrupt number .

Dependencies
None.

17.12 Constants

This section describes constants for interrupting services .

17.12.1 Function document

17.12.1.1 #define SIG_INT_ABORT 0x80000000

18 Thread Local Storage

Threads use thread local storage to allocate global storage , Global storage is private to a particular thread .
Data items stored in the thread local store can be accessed by any function in the thread （ But it cannot be accessed by any function outside the thread ）. Same as global storage , As long as the thread exists , Stored data items will always exist . You can define destruction functions , Process stored data items when the thread terminates .
Be careful ： Deleting a key does not run any destructors associated with it .
Memory for thread local storage is automatically allocated by the kernel .QuRT Thread local
Storage services are related to POSIX Compatible .
QuRT The thread local storage key in is defined by int Type to identify . Thread local storage supports the following operations .

• qurt_tls_create_key() - qurt_tls_delete_key() - qurt_tls_get_specific() - qurt_tls_set_specific()

18.1 qurt_tls_create_key()

18.1.1 Function document

18.1.1.1 int qurt_tls_create_key ( int ∗ key, void(∗)(void ∗) destructor )

Create a key to access data items stored locally by the thread .
Subsequent get and set operations use this key value .
Be careful ： When a thread's local storage item is deleted , The destructor will perform any cleanup required by the thread （ The first 3.12.1.1 section ）.
Parameters

Return value
QURT_EOK - Key created successfully .QURT_ETLSAVAIL - There is nothing available TLS secret key .
Dependencies
None.

18.2 qurt_tls_delete_key()

18.2.1 Function document

18.2.1.1 int qurt_tls_delete_key ( int key )

Deletes the specified key from the thread local store .
Be careful ： Explicitly deleting a key does not execute any destructors associated with that key （ The first 18.1.1.1 section ）.
Parameters

Return value
QURT_EOK - Key deleted successfully .QURT_ETLSENTRY - The key has been released .
Dependencies
None.

18.3 qurt_tls_get_specific()

18.3.1 Function document

18.3.1.1 void∗ qurt_tls_get_specific ( int key )

Load data items from thread local storage .
Returns the data item stored in the thread local storage with the specified key . The data item is always a pointer to user data .
Parameters

Return value
The pointer - Key indexed data items in thread local storage .0 (NULL) - Key out of range .

Dependencies
None.

18.4 qurt_tls_set_specific()

18.4.1 Function document

18.4.1.1 int qurt_tls_set_specific ( int key, const void ∗ value )

Store a data item together with the specified key in the thread local storage .

Parameters

Return value
QURT_EOK - Data item successfully stored .QURT_EINVALID - Invalid key .
QURT_EFAILED - Call from a non threaded context .
Dependencies
None.