alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Merge branch 'bugfix/fix_select_timeout_v4.3' into 'release/v4.3'

Browse Source 
VFS: `select` function's timeout is now POSIX compliant (backport v4.3)

See merge request espressif/esp-idf!16190
This commit is contained in:
Zim Kalinowski 2021-12-22 05:49:13 +00:00
commit eef3c878aa
2 changed files with 20 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
components/vfs/include/esp_vfs.h
View File

@ -1,16 +1,8 @@
// Copyright 2015-2020 Espressif Systems (Shanghai) PTE LTD /*
// * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
// Licensed under the Apache License, Version 2.0 (the "License"); *
// you may not use this file except in compliance with the License. * SPDX-License-Identifier: Apache-2.0
// 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_VFS_H__ #ifndef __ESP_VFS_H__
#define __ESP_VFS_H__ #define __ESP_VFS_H__
@ -387,7 +379,8 @@ int esp_vfs_utime(const char *path, const struct utimbuf *times);
* @param timeout If not NULL, then points to timeval structure which * @param timeout If not NULL, then points to timeval structure which
* specifies the time period after which the functions should * specifies the time period after which the functions should
* time-out and return. If it is NULL, then the function will * time-out and return. If it is NULL, then the function will
* not time-out. * not time-out. Note that the timeout period is rounded up to
* the system tick and incremented by one.
* *
* @return The number of descriptors set in the descriptor sets, or -1 * @return The number of descriptors set in the descriptor sets, or -1
* when an error (specified by errno) have occurred. * when an error (specified by errno) have occurred.

28
components/vfs/vfs.c
View File

@ -1,16 +1,8 @@
// Copyright 2015-2019 Espressif Systems (Shanghai) PTE LTD /*
// * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
// Licensed under the Apache License, Version 2.0 (the "License"); *
// you may not use this file except in compliance with the License. * SPDX-License-Identifier: Apache-2.0
// 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.
#include <stdlib.h> #include <stdlib.h>
#include <string.h> #include <string.h>
@ -1003,8 +995,14 @@ int esp_vfs_select(int nfds, fd_set *readfds, fd_set *writefds, fd_set *errorfds
TickType_t ticks_to_wait = portMAX_DELAY; TickType_t ticks_to_wait = portMAX_DELAY;
if (timeout) { if (timeout) {
uint32_t timeout_ms = timeout->tv_sec * 1000 + timeout->tv_usec / 1000; uint32_t timeout_ms = (timeout->tv_sec * 1000) + (timeout->tv_usec / 1000);
ticks_to_wait = timeout_ms / portTICK_PERIOD_MS; /* Round up the number of ticks.
* Not only we need to round up the number of ticks, but we also need to add 1.
* Indeed, `select` function shall wait for AT LEAST timeout, but on FreeRTOS,
* if we specify a timeout of 1 tick to `xSemaphoreTake`, it will take AT MOST
* 1 tick before triggering a timeout. Thus, we need to pass 2 ticks as a timeout
* to `xSemaphoreTake`. */
ticks_to_wait = ((timeout_ms + portTICK_PERIOD_MS - 1) / portTICK_PERIOD_MS) + 1;
ESP_LOGD(TAG, "timeout is %dms", timeout_ms); ESP_LOGD(TAG, "timeout is %dms", timeout_ms);
} }
ESP_LOGD(TAG, "waiting without calling socket_select"); ESP_LOGD(TAG, "waiting without calling socket_select");