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guard against one descriptor being flagged twice

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This commit is contained in:
leitner 2003-10-19 16:38:31 +00:00
parent b01e72af69
commit 963fa817de
3 changed files with 8 additions and 6 deletions
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1
io/io_canread.c
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@ -32,6 +32,7 @@ int64 io_canread() {
alt_firstread=r; alt_firstread=r;
debug_printf(("io_canread: enqueue %ld in alt read queue (next is %ld)\n",alt_firstread,e->next_read)); debug_printf(("io_canread: enqueue %ld in alt read queue (next is %ld)\n",alt_firstread,e->next_read));
#endif #endif
e->canread=0;
return r; return r;
} }
} }

1
io/io_canwrite.c
View File

@ -32,6 +32,7 @@ int64 io_canwrite() {
alt_firstwrite=r; alt_firstwrite=r;
debug_printf(("io_canwrite: enqueue %ld in alt write queue (next is %ld)\n",alt_firstwrite,e->next_write)); debug_printf(("io_canwrite: enqueue %ld in alt write queue (next is %ld)\n",alt_firstwrite,e->next_write));
#endif #endif
e->canwrite=0;
return r; return r;
} }
} }

12
io/io_waituntil2.c
View File

@ -27,12 +27,12 @@ int64 io_waituntil2(int64 milliseconds) {
for (i=n-1; i>=0; --i) { for (i=n-1; i>=0; --i) {
io_entry* e=array_get(&io_fds,sizeof(io_entry),y[i].data.fd); io_entry* e=array_get(&io_fds,sizeof(io_entry),y[i].data.fd);
if (e) { if (e) {
if (y[i].events&EPOLLIN) { if (!e->canread && (y[i].events&EPOLLIN)) {
e->canread=1; e->canread=1;
e->next_read=first_readable; e->next_read=first_readable;
first_readable=y[i].data.fd; first_readable=y[i].data.fd;
} }
if (y[i].events&EPOLLOUT) { if (!e->canwrite && (y[i].events&EPOLLOUT)) {
e->canwrite=1; e->canwrite=1;
e->next_write=first_writeable; e->next_write=first_writeable;
first_writeable=y[i].data.fd; first_writeable=y[i].data.fd;
@ -54,12 +54,12 @@ int64 io_waituntil2(int64 milliseconds) {
for (i=n-1; i>=0; --i) { for (i=n-1; i>=0; --i) {
io_entry* e=array_get(&io_fds,sizeof(io_entry),y[--n].ident); io_entry* e=array_get(&io_fds,sizeof(io_entry),y[--n].ident);
if (e) { if (e) {
if (y[n].filter==EVFILT_READ) { if (!e->canread && (y[n].filter==EVFILT_READ)) {
e->canread=1; e->canread=1;
e->next_read=first_readable; e->next_read=first_readable;
first_readable=y[n].ident; first_readable=y[n].ident;
} }
if (y[n].filter==EVFILT_WRITE) { if (!e->canwrite && (y[n].filter==EVFILT_WRITE)) {
e->canwrite=1; e->canwrite=1;
e->next_write=first_writeable; e->next_write=first_writeable;
first_writeable=y[i].ident; first_writeable=y[i].ident;
@ -134,12 +134,12 @@ again:
} }
for (j=r-1; j>=0; --j) { for (j=r-1; j>=0; --j) {
io_entry* e=array_get(&io_fds,sizeof(io_entry),p->fd); io_entry* e=array_get(&io_fds,sizeof(io_entry),p->fd);
if (p->revents&POLLIN) { if (!e->canread && (p->revents&POLLIN)) {
e->canread=1; e->canread=1;
e->next_read=first_readable; e->next_read=first_readable;
first_readable=p->fd; first_readable=p->fd;
} }
if (p->revents&POLLOUT) { if (!e->canwrite && (p->revents&POLLOUT)) {
e->canwrite=1; e->canwrite=1;
e->next_write=first_writeable; e->next_write=first_writeable;
first_writeable=p->fd; first_writeable=p->fd;