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authorshrinivasan ganapathy <shrinivasanganapathy@gmail.com>2017-10-09 14:43:21 -0700
committershrinivasan ganapathy <shrinivasanganapathy@gmail.com>2017-10-09 14:43:21 -0700
commitbe6a76706785f960f825220b4c89eb1f46382857 (patch)
tree6cb328aaa61e3628f8ccf6a211ef1dffe06bc029 /vcl-ldpreload
parent701b794fe0bbe2ea1238fb8273c5611140bb802f (diff)
LD_PRELOAD epoll_wait implementation
- support vcom fd Change-Id: I791e0983fb4b0ec574f4dff35e56adbfddc4f033 Signed-off-by: shrinivasan ganapathy <shrinivasanganapathy@gmail.com>
Diffstat (limited to 'vcl-ldpreload')
-rw-r--r--vcl-ldpreload/src/libvcl-ldpreload/vcom.c8
-rw-r--r--vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c47
2 files changed, 48 insertions, 7 deletions
diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom.c b/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
index 7a13249..e148ce0 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom.c
@@ -2822,12 +2822,12 @@ epoll_wait (int __epfd, struct epoll_event *__events,
pid,
rv, __epfd, __events,
__maxevents, __timeout);
- if (rv != 0)
+ if (rv < 0)
{
errno = -rv;
return -1;
}
- return 0;
+ return rv;
}
else
{
@@ -2883,12 +2883,12 @@ epoll_pwait (int __epfd, struct epoll_event *__events,
rv, __epfd, __events,
__maxevents, __timeout,
__ss);
- if (rv != 0)
+ if (rv < 0)
{
errno = -rv;
return -1;
}
- return 0;
+ return rv;
}
else
{
diff --git a/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c b/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
index 415d277..560cc7f 100644
--- a/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
+++ b/vcl-ldpreload/src/libvcl-ldpreload/vcom_socket.c
@@ -2643,7 +2643,48 @@ vcom_socket_epoll_pwait (int __epfd, struct epoll_event *__events,
int __maxevents, int __timeout,
const __sigset_t *__ss)
{
- return -ENOSYS;
+ int rv = -EBADF;
+
+ /* in seconds eg. 3.123456789 seconds */
+ double time_to_wait = (double) 0;
+
+ i32 vep_idx;
+
+ /* validate __event */
+ if (!__events)
+ {
+ rv = -EFAULT;
+ goto out;
+ }
+
+ /* validate __timeout */
+ if (__timeout > 0)
+ {
+ time_to_wait = (double) __timeout / (double) 1000;
+ }
+ else if (__timeout == 0)
+ {
+ time_to_wait = (double) 0;
+ }
+ else if (__timeout == -1)
+ {
+ time_to_wait = ~0;
+ }
+ else
+ {
+ rv = -EBADF;
+ goto out;
+ }
+
+ /* get vep_idx */
+ vep_idx = vcom_socket_get_vep_idx (__epfd);
+ if (vep_idx != INVALID_VEP_IDX)
+ {
+ rv = vppcom_epoll_wait (vep_idx, __events,
+ __maxevents, time_to_wait);
+ }
+out:
+ return rv;
}
int
@@ -2742,7 +2783,7 @@ vcom_socket_main_show (void)
hash_foreach (epfd, vepitemidxs,
vsm->epitemidxs_by_epfd,
({
- printf("\n[ ");
+ printf("\n[ '%04d': ", epfd);
vec_foreach (vepitemidxs_var,vepitemidxs)
{
printf("'%04d' ", (int)vepitemidxs_var[0]);
@@ -2756,7 +2797,7 @@ vcom_socket_main_show (void)
hash_foreach (fd, vepitemidxs,
vsm->epitemidxs_by_fd,
({
- printf("\n{ ");
+ printf("\n{ '%04d': ", fd);
vec_foreach (vepitemidxs_var,vepitemidxs)
{
printf("'%04d' ", (int)vepitemidxs_var[0]);