diff options
| -rw-r--r-- | libc/src/sys/epoll/linux/epoll_pwait2.cpp | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libc/src/sys/epoll/linux/epoll_pwait2.cpp b/libc/src/sys/epoll/linux/epoll_pwait2.cpp index 14b4193..4123157 100644 --- a/libc/src/sys/epoll/linux/epoll_pwait2.cpp +++ b/libc/src/sys/epoll/linux/epoll_pwait2.cpp @@ -25,10 +25,22 @@ namespace LIBC_NAMESPACE_DECL { LLVM_LIBC_FUNCTION(int, epoll_pwait2, (int epfd, struct epoll_event *events, int maxevents, const struct timespec *timeout, const sigset_t *sigmask)) { +#ifdef SYS_epoll_pwait2 int ret = LIBC_NAMESPACE::syscall_impl<int>( SYS_epoll_pwait2, epfd, reinterpret_cast<long>(events), maxevents, reinterpret_cast<long>(timeout), reinterpret_cast<long>(sigmask), NSIG / 8); +#elif defined(SYS_epoll_pwait) + // Convert nanoseconds to milliseconds, rounding up if there are remaining + // nanoseconds + long timeout_ms = static_cast<long>(timeout->tv_sec * 1000 + + (timeout->tv_nsec + 999999) / 1000000); + int ret = LIBC_NAMESPACE::syscall_impl<int>( + SYS_epoll_pwait, epfd, reinterpret_cast<long>(events), maxevents, + timeout_ms, reinterpret_cast<long>(sigmask), NSIG / 8); +#else +#error "epoll_pwait and epoll_pwait2 syscalls not available." +#endif // A negative return value indicates an error with the magnitude of the // value being the error code. |