Mercurial > hg > nginx
diff auto/unix @ 5707:31dd63dcb9ea
Events: use eventfd() instead of syscall(SYS_eventfd) if possible.
This fixes --with-file-aio support on systems that lack eventfd()
syscall, notably aarch64 Linux.
The syscall(SYS_eventfd) may still be necessary on systems that
have eventfd() syscall in the kernel but lack it in glibc, e.g.
as seen in the current CentOS 5 release.
| author | Ruslan Ermilov <ru@nginx.com> |
|---|---|
| date | Fri, 23 May 2014 16:37:05 +0400 |
| parents | 692afcea9d0d |
| children | b92d5a26d55f |
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--- a/auto/unix +++ b/auto/unix @@ -398,16 +398,36 @@ if [ $NGX_FILE_AIO = YES ]; then if [ $ngx_found = yes ]; then CORE_SRCS="$CORE_SRCS $FILE_AIO_SRCS" + fi - elif [ $ngx_found = no ]; then + if [ $ngx_found = no ]; then ngx_feature="Linux AIO support" ngx_feature_name="NGX_HAVE_FILE_AIO" ngx_feature_run=no ngx_feature_incs="#include <linux/aio_abi.h> - #include <sys/syscall.h>" + #include <sys/eventfd.h>" ngx_feature_path= ngx_feature_libs= + ngx_feature_test="struct iocb iocb; + iocb.aio_lio_opcode = IOCB_CMD_PREAD; + iocb.aio_flags = IOCB_FLAG_RESFD; + iocb.aio_resfd = -1; + (void) eventfd(0, 0)" + . auto/feature + + if [ $ngx_found = yes ]; then + have=NGX_HAVE_EVENTFD . auto/have + have=NGX_HAVE_SYS_EVENTFD_H . auto/have + CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" + fi + fi + + if [ $ngx_found = no ]; then + + ngx_feature="Linux AIO support (SYS_eventfd)" + ngx_feature_incs="#include <linux/aio_abi.h> + #include <sys/syscall.h>" ngx_feature_test="int n = SYS_eventfd; struct iocb iocb; iocb.aio_lio_opcode = IOCB_CMD_PREAD; @@ -418,16 +438,17 @@ if [ $NGX_FILE_AIO = YES ]; then if [ $ngx_found = yes ]; then have=NGX_HAVE_EVENTFD . auto/have CORE_SRCS="$CORE_SRCS $LINUX_AIO_SRCS" + fi + fi - else - cat << END + if [ $ngx_found = no ]; then + cat << END $0: no supported file AIO was found Currently file AIO is supported on FreeBSD 4.3+ and Linux 2.6.22+ only END - exit 1 - fi + exit 1 fi fi