diff options
Diffstat (limited to 'src/sys/epoll/linux/epoll_pwait.cpp')
-rw-r--r-- | src/sys/epoll/linux/epoll_pwait.cpp | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/src/sys/epoll/linux/epoll_pwait.cpp b/src/sys/epoll/linux/epoll_pwait.cpp new file mode 100644 index 000000000000..ee1b4e66e984 --- /dev/null +++ b/src/sys/epoll/linux/epoll_pwait.cpp @@ -0,0 +1,42 @@ +//===---------- Linux implementation of the epoll_pwait function ----------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "src/sys/epoll/epoll_pwait.h" + +#include "src/__support/OSUtil/syscall.h" // For internal syscall function. +#include "src/__support/common.h" + +#include "src/errno/libc_errno.h" +#include <sys/syscall.h> // For syscall numbers. + +// TODO: Use this include once the include headers are also using quotes. +// #include "include/llvm-libc-types/sigset_t.h" +// #include "include/llvm-libc-types/struct_epoll_event.h" + +#include <sys/epoll.h> + +namespace LIBC_NAMESPACE { + +LLVM_LIBC_FUNCTION(int, epoll_pwait, + (int epfd, struct epoll_event *events, int maxevents, + int timeout, const sigset_t *sigmask)) { + int ret = LIBC_NAMESPACE::syscall_impl<int>( + SYS_epoll_pwait, epfd, reinterpret_cast<long>(events), maxevents, timeout, + reinterpret_cast<long>(sigmask), sizeof(sigset_t)); + + // A negative return value indicates an error with the magnitude of the + // value being the error code. + if (ret < 0) { + libc_errno = -ret; + return -1; + } + + return 0; +} + +} // namespace LIBC_NAMESPACE |