50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#include <errno.h>
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#include <unistd.h>
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#include <sys/epoll.h>
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#include <sys/syscall.h>
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int epoll_create(int size)
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{
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if (size <= 0)
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{
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errno = EINVAL;
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return -1;
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}
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return epoll_create1(0);
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}
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int epoll_create1(int flags)
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{
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return syscall(SYS_EPOLL_CREATE1, flags);
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}
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int epoll_ctl(int epfd, int op, int fd, struct epoll_event* event)
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{
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return syscall(SYS_EPOLL_CTL, epfd, op, fd, event);
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}
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int epoll_wait(int epfd, struct epoll_event* events, int maxevents, int timeout)
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{
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return epoll_pwait(epfd, events, maxevents, timeout, nullptr);
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}
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int epoll_pwait(int epfd, struct epoll_event* events, int maxevents, int timeout, const sigset_t* sigmask)
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{
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timespec ts;
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timespec* ts_ptr = nullptr;
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if (timeout >= 0)
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{
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ts.tv_sec = static_cast<time_t>(timeout / 1000),
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ts.tv_nsec = (timeout % 1000) * 1'000'000,
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ts_ptr = &ts;
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}
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return epoll_pwait2(epfd, events, maxevents, ts_ptr, sigmask);
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}
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int epoll_pwait2(int epfd, struct epoll_event* events, int maxevents, const struct timespec* timeout, const sigset_t* sigmask)
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{
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return syscall(SYS_EPOLL_PWAIT2, epfd, events, maxevents, timeout, sigmask);
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}
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