tests: compile some tools/tests as C++
[lttng-tools.git] / src / common / readwrite.h
1 #ifndef LTTNG_COMMON_READWRITE_H
2 #define LTTNG_COMMON_READWRITE_H
3
4 /*
5 * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
6 *
7 * SPDX-License-Identifier: LGPL-2.1-only
8 *
9 */
10
11 #include <unistd.h>
12 #include <common/macros.h>
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18 /*
19 * lttng_read and lttng_write take care of EINTR and partial read/write.
20 * Upon success, they return the "count" received as parameter.
21 * They can return a negative value if an error occurs.
22 * If a value lower than the requested "count" is returned, it means an
23 * error occurred.
24 * The error can be checked by querying errno.
25 */
26 ssize_t lttng_read(int fd, void *buf, size_t count);
27 ssize_t lttng_write(int fd, const void *buf, size_t count);
28
29 #ifdef __cplusplus
30 }
31 #endif
32
33 #endif /* LTTNG_COMMON_READWRITE_H */
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