1EPOLL_CREATE(2) Linux Programmer's Manual EPOLL_CREATE(2)
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6 epoll_create - open an epoll file descriptor
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9 #include <sys/epoll.h>
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11 int epoll_create(int size)
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14 Open an epoll file descriptor by requesting the kernel allocate an
15 event backing store dimensioned for size descriptors. The size is not
16 the maximum size of the backing store but just a hint to the kernel
17 about how to dimension internal structures. The returned file descrip‐
18 tor will be used for all the subsequent calls to the epoll interface.
19 The file descriptor returned by epoll_create(2) must be closed by using
20 close(2).
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23 When successful, epoll_create(2) returns a non-negative integer identi‐
24 fying the descriptor. When an error occurs, epoll_create(2) returns -1
25 and errno is set appropriately.
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28 EINVAL size is not positive.
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31 ENFILE The system limit on the total number of open files has
32 been reached.
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34 ENOMEM There was insufficient memory to create the kernel
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38 epoll_create(2) is Linux specific, and was introduced in kernel
39 2.5.44.
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42 close(2), epoll_ctl(2), epoll_wait(2), epoll(7)
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46Linux 2.6.7 2004-06-17 EPOLL_CREATE(2)