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VFS: Support concurrent VFS select calls

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Closes https://github.com/espressif/esp-idf/issues/3392
This commit is contained in:
Roland Dobai
2019-07-10 14:08:21 +02:00
parent ac5508efd5
commit 91ce5db172
4 changed files with 253 additions and 155 deletions
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4
components/vfs/include/esp_vfs.h
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@@ -236,7 +236,7 @@ typedef struct
#endif // CONFIG_VFS_SUPPORT_TERMIOS
/** start_select is called for setting up synchronous I/O multiplexing of the desired file descriptors in the given VFS */
esp_err_t (*start_select)(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, esp_vfs_select_sem_t sem);
esp_err_t (*start_select)(int nfds, fd_set *readfds, fd_set *writefds, fd_set *exceptfds, esp_vfs_select_sem_t sem, void **end_select_args);
/** socket select function for socket FDs with the functionality of POSIX select(); this should be set only for the socket VFS */
int (*socket_select)(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds, struct timeval *timeout);
/** 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 */
@@ -246,7 +246,7 @@ typedef struct
/** end_select is called to stop the I/O multiplexing and deinitialize the environment created by start_select for the given VFS */
void* (*get_socket_select_semaphore)(void);
/** get_socket_select_semaphore returns semaphore allocated in the socket driver; set only for the socket driver */
void (*end_select)(void);
esp_err_t (*end_select)(void *end_select_args);
} esp_vfs_t;