more defensive programming for SIGIO (*groan*)

21 years ago · 03461c6eb1
parent 5935ca0eb8
commit 03461c6eb1
2 changed files with 2 additions and 0 deletions
--- a/io/io_canread.c
+++ b/io/io_canread.c
@ -24,6 +24,7 @@ int64 io_canread() {
    if (!e) break;
    r=first_readable;
    first_readable=e->next_read;
+    e->next_read=-1;
    debug_printf(("io_canread: dequeue %lld from normal read queue (next is %ld)\n",r,first_readable));
    if (e->wantread && e->canread) {
 #ifdef HAVE_SIGIO
--- a/io/io_canwrite.c
+++ b/io/io_canwrite.c
@ -24,6 +24,7 @@ int64 io_canwrite() {
    if (!e) break;
    r=first_writeable;
    first_writeable=e->next_write;
+    e->next_write=-1;
    debug_printf(("io_canwrite: dequeue %lld from normal write queue (next is %ld)\n",r,first_writeable));
    if (e->wantwrite && e->canwrite) {
 #ifdef HAVE_SIGIO