Index: squid/src/fs/aufs/aiops.c
diff -c squid/src/fs/aufs/aiops.c:1.12.2.2 squid/src/fs/aufs/aiops.c:1.12.2.6
*** squid/src/fs/aufs/aiops.c:1.12.2.2	Sat Nov 9 03:42:36 2002
--- squid/src/fs/aufs/aiops.c	Wed Jan 8 17:55:35 2003
***************
*** 159,164 ****
--- 159,167 ----
 
 NULL, &done_requests.head
 };
+ static int done_fd = 0;
+ static int done_fd_read = 0;
+ static int done_signalled = 0;
 static pthread_attr_t globattr;
 #if HAVE_SCHED_H
 static struct sched_param globsched;
***************
*** 235,243 ****
--- 238,255 ----
 }
 
 static void
+ squidaio_fdhandler(int fd, void *data)
+ {
+ char junk[256];
+ read(done_fd_read, junk, sizeof(junk));
+ commSetSelect(fd, COMM_SELECT_READ, squidaio_fdhandler, NULL, 0);
+ }
+ 
+ static void
 squidaio_init(void)
 {
 int i;
+ int done_pipe[2];
 squidaio_thread_t *threadp;
 
 if (squidaio_initialised)
***************
*** 281,286 ****
--- 293,308 ----
 done_queue.requests = 0;
 done_queue.blocked = 0;
 
+ /* Initialize done pipe signal */
+ pipe(done_pipe);
+ done_fd = done_pipe[1];
+ done_fd_read = done_pipe[0];
+ fd_open(done_pipe[0], FD_PIPE, "async-io completetion event: main");
+ fd_open(done_pipe[1], FD_PIPE, "async-io completetion event: threads");
+ commSetNonBlocking(done_pipe[0]);
+ commSetNonBlocking(done_pipe[1]);
+ commSetSelect(done_pipe[0], COMM_SELECT_READ, squidaio_fdhandler, NULL, 0);
+ 
 /* Create threads and get them to sit in their wait loop */
 squidaio_thread_pool = memPoolCreate("aio_thread", sizeof(squidaio_thread_t));
 for (i = 0; i < NUMTHREADS; i++) { *************** *** 401,406 **** --- 423,432 ---- *done_queue.tailp = request; done_queue.tailp = &request->next;
 	pthread_mutex_unlock(&done_queue.mutex);
+ 	if (!done_signalled) {
+ 	 done_signalled = 1;
+ 	 write(done_fd, "!", 1);
+ 	}
 	threadp->requests++;
 }				/* while forever */
 return NULL;
***************
*** 801,819 ****
 	}
 	done_requests.tailp = &requests->next;
 }
- #if HAVE_SCHED_H
- /* Give up the CPU to allow the threads to do their work */
- /*
- * For Andres thoughts about yield(), see
- * http://www.squid-cache.org/mail-archive/squid-dev/200012/0001.html
- */
- if (done_queue.head &#124;&#124; request_queue.head)
- #ifndef _SQUID_SOLARIS_
- 	sched_yield();
- #else
- 	yield();
- #endif
- #endif
 }
 
 squidaio_result_t *
--- 827,832 ----
***************
*** 827,832 ****
--- 840,850 ----
 AIO_REPOLL:
 request = done_requests.head;
 if (request == NULL && !polled) {
+ 	if (done_signalled) {
+ 	 char junk[256];
+ 	 read(done_fd_read, junk, sizeof(junk));
+ 	 done_signalled = 0;
+ 	}
 	squidaio_poll_queues();
 	polled = 1;
 	request = done_requests.head;
Index: squid/src/fs/aufs/async_io.c
diff -c squid/src/fs/aufs/async_io.c:1.10.2.4 squid/src/fs/aufs/async_io.c:1.10.2.5
*** squid/src/fs/aufs/async_io.c:1.10.2.4	Sun Nov 10 05:06:07 2002
--- squid/src/fs/aufs/async_io.c	Fri Jan 3 18:19:42 2003
***************
*** 88,93 ****
--- 88,94 ----
 	fd_close(fd);
 }
 
+ 
 void
 aioInit(void)
 {
***************
*** 97,103 ****
 cachemgrRegister("squidaio_counts", "Async IO Function Counters",
 	aioStats, 0, 1);
 initialised = 1;
- comm_quick_poll_required();
 }
 
 void
--- 98,103 ----
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