Ivan Baravy
e71791c0ab
Such device don't need new threads and files but are valid ethernet devices for the kernel. Convenient for testing.
86 lines
1.4 KiB
C
86 lines
1.4 KiB
C
/*
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SPDX-License-Identifier: GPL-2.0-or-later
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UMKa - User-Mode KolibriOS developer tools
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io - input/output platform specific code
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Copyright (C) 2023 Ivan Baravy <dunkaist@gmail.com>
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*/
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#ifndef UMKAIO_H_INCLUDED
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#define UMKAIO_H_INCLUDED
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#include <stdatomic.h>
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#include <stddef.h>
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#include <pthread.h>
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#if !defined (O_BINARY)
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#define O_BINARY 0 // for Windows
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#endif
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struct umka_io {
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const atomic_int *running;
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pthread_t iot;
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};
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struct iot_cmd_read_arg {
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int fd;
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void *buf;
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size_t count;
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};
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struct iot_cmd_read_ret {
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ssize_t val;
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};
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union iot_cmd_read {
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struct iot_cmd_read_arg arg;
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struct iot_cmd_read_ret ret;
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};
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struct iot_cmd_write_arg {
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int fd;
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void *buf;
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size_t count;
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};
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struct iot_cmd_write_ret {
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ssize_t val;
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};
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union iot_cmd_write {
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struct iot_cmd_write_arg arg;
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struct iot_cmd_write_ret ret;
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};
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enum {
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IOT_CMD_TYPE_READ,
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IOT_CMD_TYPE_WRITE,
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};
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struct iot_cmd {
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pthread_cond_t iot_cond;
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pthread_mutex_t iot_mutex;
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pthread_mutex_t mutex;
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atomic_int status;
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int type;
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union {
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union iot_cmd_read read;
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union iot_cmd_write write;
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};
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};
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struct umka_io *
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io_init(atomic_int *running);
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void
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io_close(struct umka_io *io);
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ssize_t
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io_read(int fd, void *buf, size_t count, const struct umka_io *io);
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ssize_t
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io_write(int fd, const void *buf, size_t count, const struct umka_io *io);
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#endif // UMKAIO_H_INCLUDED
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