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
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
use {
super::State,
crate::{
writers::file_log_writer::remove_or_compress_too_old_logfiles_impl, Cleanup, FileSpec,
},
std::{
sync::{
mpsc::Sender,
{Arc, Mutex},
},
thread::{Builder as ThreadBuilder, JoinHandle},
},
};
#[cfg(feature = "async")]
use {
crate::util::{eprint_err, eprint_msg, ASYNC_FLUSH, ASYNC_SHUTDOWN, ERRCODE},
crossbeam_channel::{self, Sender as CrossbeamSender},
crossbeam_queue::ArrayQueue,
};
const CLEANER: &str = "flexi_logger-fs-cleanup";
#[cfg(feature = "async")]
const ASYNC_WRITER: &str = "flexi_logger-fs-async_writer";
#[cfg(feature = "async")]
const ASYNC_FLUSHER: &str = "flexi_logger-fs-async_flusher";
pub(crate) enum MessageToCleanupThread {
Act,
Die,
}
pub(crate) fn start_cleanup_thread(
cleanup: Cleanup,
file_spec: FileSpec,
) -> Result<(Sender<MessageToCleanupThread>, JoinHandle<()>), std::io::Error> {
let (sender, receiver) = std::sync::mpsc::channel();
let builder = ThreadBuilder::new().name(CLEANER.to_string());
#[cfg(not(feature = "dont_minimize_extra_stacks"))]
let builder = builder.stack_size(512 * 1024);
Ok((
sender,
builder.spawn(move || {
while let Ok(MessageToCleanupThread::Act) = receiver.recv() {
remove_or_compress_too_old_logfiles_impl(&cleanup, &file_spec).ok();
}
})?,
))
}
pub(super) fn start_sync_flusher(am_state: Arc<Mutex<State>>, flush_interval: std::time::Duration) {
let builder = std::thread::Builder::new().name("flexi_logger-flusher".to_string());
#[cfg(not(feature = "dont_minimize_extra_stacks"))]
let builder = builder.stack_size(128);
builder.spawn(move || {
let (_tx, rx) = std::sync::mpsc::channel::<()>();
loop {
rx.recv_timeout(flush_interval).ok();
(*am_state).lock().map_or_else(
|_e| (),
|mut state| {
state.flush().ok();
},
);
}
})
.unwrap();
}
#[cfg(feature = "async")]
pub(super) fn start_async_fs_writer(
am_state: Arc<Mutex<State>>,
message_capa: usize,
a_pool: Arc<ArrayQueue<Vec<u8>>>,
) -> (CrossbeamSender<Vec<u8>>, Mutex<Option<JoinHandle<()>>>) {
let (sender, receiver) = crossbeam_channel::unbounded::<Vec<u8>>();
(
sender,
Mutex::new(Some(
std::thread::Builder::new()
.name(ASYNC_WRITER.to_string())
.spawn(move || loop {
match receiver.recv() {
Err(_) => break,
Ok(mut message) => {
let mut state = am_state.lock().unwrap();
match message.as_ref() {
ASYNC_FLUSH => {
state.flush().unwrap_or_else(|e| {
eprint_err(ERRCODE::Flush, "flushing failed", &e);
});
}
ASYNC_SHUTDOWN => {
state.shutdown();
break;
}
_ => {
state.write_buffer(&message).unwrap_or_else(|e| {
eprint_err(ERRCODE::Write, "writing failed", &e);
});
}
}
if message.capacity() <= message_capa {
message.clear();
a_pool.push(message).ok();
}
}
}
})
.expect("Couldn't spawn flexi_logger-async_file_log_writer"),
)),
)
}
#[cfg(feature = "async")]
pub(super) fn start_async_fs_flusher(
async_writer: CrossbeamSender<Vec<u8>>,
flush_interval: std::time::Duration,
) {
let builder = std::thread::Builder::new().name(ASYNC_FLUSHER.to_string());
#[cfg(not(feature = "dont_minimize_extra_stacks"))]
let builder = builder.stack_size(128);
builder.spawn(move || {
let (_tx, rx) = std::sync::mpsc::channel::<()>();
loop {
if let Err(std::sync::mpsc::RecvTimeoutError::Disconnected) =
rx.recv_timeout(flush_interval)
{
eprint_msg(ERRCODE::Flush, "Flushing unexpectedly stopped working");
break;
}
async_writer.send(ASYNC_FLUSH.to_vec()).ok();
}
})
.unwrap();
}