util/random/init_atfork.cpp


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

#include "init_atfork.h" 
#include "random.h" 
#include "entropy.h" 
 
#include <util/generic/singleton.h> 
#include <util/system/yassert.h>
 
#if defined(_unix_) 
    #include <pthread.h> 
#endif 
 
namespace { 
    struct TInit { 
        inline TInit() noexcept { 
            (void)&AtFork;
 
#if defined(_unix_) 
            Y_VERIFY(pthread_atfork(nullptr, AtFork, nullptr) == 0, "it happens");
#endif 
        } 
 
        static void AtFork() noexcept { 
            ResetRandomState(); 
        } 
    }; 
} 
 
void RNGInitAtForkHandlers() { 
    SingletonWithPriority<TInit, 0>(); 
}