kopia lustrzana https://github.com/espressif/esp-idf
76 wiersze
2.1 KiB
C
76 wiersze
2.1 KiB
C
/*
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* SPDX-FileCopyrightText: 2015-2023 Espressif Systems (Shanghai) CO LTD
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <string.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <sys/reent.h>
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#include "esp_attr.h"
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/**
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* This is the replacement for newlib's _REENT_INIT_PTR and __sinit.
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* The problem with __sinit is that it allocates three FILE structures
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* (stdin, stdout, stderr). Having individual standard streams for each task
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* is a bit too much on a small embedded system. So we point streams
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* to the streams of the global struct _reent, which are initialized in
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* startup code.
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*/
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void IRAM_ATTR esp_reent_init(struct _reent* r)
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{
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memset(r, 0, sizeof(*r));
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_REENT_STDIN(r) = _REENT_STDIN(_GLOBAL_REENT);
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_REENT_STDOUT(r) = _REENT_STDOUT(_GLOBAL_REENT);
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_REENT_STDERR(r) = _REENT_STDERR(_GLOBAL_REENT);
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_REENT_CLEANUP(r) = _REENT_CLEANUP(_GLOBAL_REENT);
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_REENT_SDIDINIT(r) = _REENT_SDIDINIT(_GLOBAL_REENT);
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}
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/* only declared in private stdio header file, local.h */
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extern void __sfp_lock_acquire(void);
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extern void __sfp_lock_release(void);
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void esp_reent_cleanup(void)
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{
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struct _reent* r = __getreent();
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_reclaim_reent(r);
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r->_emergency = NULL;
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r->_mp = NULL;
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r->_r48 = NULL;
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r->_localtime_buf = NULL;
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r->_asctime_buf = NULL;
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r->_signal_buf = NULL;
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r->_misc = NULL;
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r->_cvtbuf = NULL;
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/* Clean up "glue" (lazily-allocated FILE objects) */
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struct _glue* prev = &_REENT_SGLUE(_GLOBAL_REENT);
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for (struct _glue * cur = _REENT_SGLUE(_GLOBAL_REENT)._next; cur != NULL;) {
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if (cur->_niobs == 0) {
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cur = cur->_next;
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continue;
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}
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bool has_open_files = false;
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for (int i = 0; i < cur->_niobs; ++i) {
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FILE* fp = &cur->_iobs[i];
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if (fp->_flags != 0) {
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has_open_files = true;
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break;
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}
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}
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if (has_open_files) {
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prev = cur;
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cur = cur->_next;
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continue;
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}
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struct _glue * next = cur->_next;
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prev->_next = next;
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free(cur);
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cur = next;
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}
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}
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