105 lines
3.7 KiB
C
105 lines
3.7 KiB
C
/*
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ChibiOS - Copyright (C) 2006,2007,2008,2009,2010,2011,2012,2013,2014,
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2015,2016,2017,2018,2019,2020,2021 Giovanni Di Sirio.
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This file is part of ChibiOS.
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ChibiOS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation version 3 of the License.
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ChibiOS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file vfs/src/vfsbuffers.c
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* @brief VFS shared path buffers code.
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*
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* @addtogroup VFS_BUFFERS
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* @{
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*/
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#include "vfs.h"
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/*===========================================================================*/
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/* Module local definitions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module exported variables. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local types. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module local variables. */
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/*===========================================================================*/
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/**
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* @brief VFS static data.
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*/
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static struct {
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/**
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* @brief Guarded pool of path buffers.
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*/
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guarded_memory_pool_t path_buffers_pool;
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/**
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* @brief Shared path buffers.
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*/
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char path_buffers[VFS_CFG_PATHBUFS_NUM]
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[VFS_CFG_PATHLEN_MAX + 1];
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} vfs_buffers_static;
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/*===========================================================================*/
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/* Module local functions. */
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/*===========================================================================*/
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/*===========================================================================*/
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/* Module exported functions. */
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/*===========================================================================*/
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/**
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* @brief VFS initialization.
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*
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* @init
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*/
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void __vfs_buffers_init(void) {
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chGuardedPoolObjectInit(&vfs_buffers_static.path_buffers_pool,
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VFS_CFG_PATHLEN_MAX + 1);
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chGuardedPoolLoadArray(&vfs_buffers_static.path_buffers_pool,
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&vfs_buffers_static.path_buffers[0],
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VFS_CFG_PATHBUFS_NUM);
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}
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/**
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* @brief Claims a path buffer, waiting if not available.
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*
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* @return Pointer to the taken buffer.
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*/
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char *vfs_buffer_take(void) {
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return (char *)chGuardedPoolAllocTimeout(&vfs_buffers_static.path_buffers_pool,
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TIME_INFINITE);
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}
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/**
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* @brief Releases a path buffer.
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*
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* @param[in] buf Buffer to be released.
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*/
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void vfs_buffer_release(char *buf) {
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chGuardedPoolFree(&vfs_buffers_static.path_buffers_pool, (void *)buf);
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}
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/** @} */
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