blob: 9da154fe570737d07da2191ef058ee74bff1f7a3 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "wakeup_pipe.h"
#include "socket_utils.h"
#include <vespa/vespalib/util/require.h>
#include <unistd.h>
namespace vespalib {
WakeupPipe::WakeupPipe()
: _reader(),
_writer()
{
int pipe[2];
socketutils::nonblocking_pipe(pipe);
_reader.reset(pipe[0]);
_writer.reset(pipe[1]);
}
WakeupPipe::~WakeupPipe() = default;
void
WakeupPipe::write_token()
{
char token = 'T';
ssize_t res = _writer.write(&token, 1);
if (res < 0) {
res = -errno;
}
REQUIRE(res > 0 || res == -EAGAIN || res == -EWOULDBLOCK);
}
void
WakeupPipe::read_tokens()
{
char token_trash[128];
ssize_t res = _reader.read(token_trash, sizeof(token_trash));
REQUIRE(res > 0);
}
}
|