blob: 376fd12d430935ca9b82a88c38b64893728b36ef (
plain)
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
|
#include "condition_variable_debug.h"
#include "common/mutex_debug.h"
namespace ceph {
condition_variable_debug::condition_variable_debug()
: waiter_mutex{nullptr}
{
int r = pthread_cond_init(&cond, nullptr);
if (r) {
throw std::system_error(r, std::generic_category());
}
}
condition_variable_debug::~condition_variable_debug()
{
pthread_cond_destroy(&cond);
}
void condition_variable_debug::wait(std::unique_lock<mutex_debug>& lock)
{
// make sure this cond is used with one mutex only
ceph_assert(waiter_mutex == nullptr ||
waiter_mutex == lock.mutex());
waiter_mutex = lock.mutex();
ceph_assert(waiter_mutex->is_locked());
waiter_mutex->_pre_unlock();
if (int r = pthread_cond_wait(&cond, waiter_mutex->native_handle());
r != 0) {
throw std::system_error(r, std::generic_category());
}
waiter_mutex->_post_lock();
}
void condition_variable_debug::notify_one()
{
// make sure signaler is holding the waiter's lock.
ceph_assert(waiter_mutex == nullptr ||
waiter_mutex->is_locked());
if (int r = pthread_cond_signal(&cond); r != 0) {
throw std::system_error(r, std::generic_category());
}
}
void condition_variable_debug::notify_all(bool sloppy)
{
if (!sloppy) {
// make sure signaler is holding the waiter's lock.
ceph_assert(waiter_mutex == NULL ||
waiter_mutex->is_locked());
}
if (int r = pthread_cond_broadcast(&cond); r != 0 && !sloppy) {
throw std::system_error(r, std::generic_category());
}
}
std::cv_status condition_variable_debug::_wait_until(mutex_debug* mutex,
timespec* ts)
{
// make sure this cond is used with one mutex only
ceph_assert(waiter_mutex == nullptr ||
waiter_mutex == mutex);
waiter_mutex = mutex;
ceph_assert(waiter_mutex->is_locked());
waiter_mutex->_pre_unlock();
int r = pthread_cond_timedwait(&cond, waiter_mutex->native_handle(), ts);
waiter_mutex->_post_lock();
switch (r) {
case 0:
return std::cv_status::no_timeout;
case ETIMEDOUT:
return std::cv_status::timeout;
default:
throw std::system_error(r, std::generic_category());
}
}
} // namespace ceph
|
