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os-k/kaleid/libbuf/bclose.c

55 lines
2.3 KiB
C

//----------------------------------------------------------------------------//
// OS on Kaleid //
// //
// Desc: Buffer library //
// //
// //
// Copyright © 2018-2021 The OS/K Team //
// //
// This file is part of OS/K. //
// //
// OS/K is free software: you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation, either version 3 of the License, or //
// any later version. //
// //
// OS/K is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY//without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with OS/K. If not, see <https://www.gnu.org/licenses/>. //
//----------------------------------------------------------------------------//
#include <libbuf.h>
//
// Closes a buffer, not flushing unless the proper flag is set
//
error_t BCloseBuf(Buffer_t *buf)
{
assert_always(buf);
ExAcquireLock(&buf->lock);
if (buf->flags & BF_FONCLOSE) {
BFlushBuf(buf);
}
if (buf->flags & BF_SALLOC && buf->buf) {
free(buf->buf);
}
buf->buf = buf->rp = buf->wp = NULL;
buf->flags = buf->state = buf->size = 0;
ExReleaseLock(&buf->lock);
if (buf->flags & BF_BALLOC) {
free(buf);
}
return EOK;
}