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esp_vfs_select_ops_t struct
Struct containing function pointers to select related functionality.
Syntax
typedef struct
{
const esp_vfs_start_select_op_t start_select;
const esp_vfs_socket_select_op_t socket_select;
const esp_vfs_stop_socket_select_op_t stop_socket_select;
const esp_vfs_stop_socket_select_isr_op_t stop_socket_select_isr;
const esp_vfs_get_socket_select_semaphore_op_t get_socket_select_semaphore;
const esp_vfs_end_select_op_t end_select;
} esp_vfs_select_ops_t;
Fields
Field
Declared as
Description
start_select is called for setting up synchronous I/O multiplexing of the desired file descriptors in the given VFS.
socket select function for socket FDs with the functionality of POSIX select(); this should be set only for the socket VFS.
called by VFS to interrupt the socket_select call when select is activated from a non-socket VFS driver; set only for the socket driver.
stop_socket_select which can be called from ISR; set only for the socket driver.
end_select is called to stop the I/O multiplexing and deinitialize the environment created by start_select for the given VFS.
const esp_vfs_end_select_op_t
get_socket_select_semaphore returns semaphore allocated in the socket driver; set only for the socket driver.