mirror of
https://github.com/espressif/esp-idf.git
synced 2025-11-04 00:51:42 +01:00
49 lines
1.9 KiB
C
49 lines
1.9 KiB
C
// Copyright 2018-2019 Espressif Systems (Shanghai) PTE LTD
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
#ifndef _ESP_PLATFORM_SYS_POLL_H_
|
|
#define _ESP_PLATFORM_SYS_POLL_H_
|
|
|
|
#define POLLIN (1u << 0) /* data other than high-priority may be read without blocking */
|
|
#define POLLRDNORM (1u << 1) /* normal data may be read without blocking */
|
|
#define POLLRDBAND (1u << 2) /* priority data may be read without blocking */
|
|
#define POLLPRI (POLLRDBAND) /* high-priority data may be read without blocking */
|
|
// Note: POLLPRI is made equivalent to POLLRDBAND in order to fit all these events into one byte
|
|
#define POLLOUT (1u << 3) /* normal data may be written without blocking */
|
|
#define POLLWRNORM (POLLOUT) /* equivalent to POLLOUT */
|
|
#define POLLWRBAND (1u << 4) /* priority data my be written */
|
|
#define POLLERR (1u << 5) /* some poll error occurred */
|
|
#define POLLHUP (1u << 6) /* file descriptor was "hung up" */
|
|
#define POLLNVAL (1u << 7) /* the specified file descriptor is invalid */
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
struct pollfd {
|
|
int fd; /* The descriptor. */
|
|
short events; /* The event(s) is/are specified here. */
|
|
short revents; /* Events found are returned here. */
|
|
};
|
|
|
|
typedef unsigned int nfds_t;
|
|
|
|
int poll(struct pollfd *fds, nfds_t nfds, int timeout);
|
|
|
|
#ifdef __cplusplus
|
|
} // extern "C"
|
|
#endif
|
|
|
|
#endif // _ESP_PLATFORM_SYS_POLL_H_
|