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[Qemu-devel] [PATCH 05/12] Threadlet: Add submit_work threadlet API.
From: |
Arun R Bharadwaj |
Subject: |
[Qemu-devel] [PATCH 05/12] Threadlet: Add submit_work threadlet API. |
Date: |
Thu, 20 Jan 2011 18:03:41 +0530 |
User-agent: |
StGit/0.15 |
This patch adds submit work threadlet API and shows how
the qemu_paio_submit changes to submit_work.
Signed-off-by: Arun R Bharadwaj <address@hidden>
Reviewed-by: Stefan Hajnoczi <address@hidden>
---
posix-aio-compat.c | 33 ++++++++++++++++++++++-----------
1 files changed, 22 insertions(+), 11 deletions(-)
diff --git a/posix-aio-compat.c b/posix-aio-compat.c
index 011633f..62e32e3 100644
--- a/posix-aio-compat.c
+++ b/posix-aio-compat.c
@@ -393,13 +393,13 @@ static void spawn_threadlet(ThreadletQueue *queue)
if (sigprocmask(SIG_SETMASK, &oldset, NULL)) die("sigprocmask restore");
}
-static void qemu_paio_submit(struct qemu_paiocb *aiocb)
+/**
+ * submit_work: Submit to the global queue a new task to be executed
+ * asynchronously.
+ * @work: Contains information about the task that needs to be submitted.
+ */
+static void submit_work(ThreadletWork *work)
{
- qemu_mutex_lock(&aiocb_mutex);
- aiocb->ret = -EINPROGRESS;
- aiocb->active = 0;
- qemu_mutex_unlock(&aiocb_mutex);
-
qemu_mutex_lock(&globalqueue.lock);
if (!globalqueue_init) {
@@ -415,13 +415,13 @@ static void qemu_paio_submit(struct qemu_paiocb *aiocb)
}
if (globalqueue.idle_threads == 0 &&
- globalqueue.cur_threads < globalqueue.max_threads)
+ globalqueue.cur_threads < globalqueue.max_threads) {
spawn_threadlet(&globalqueue);
- aiocb->work.func = handle_work;
-
- QTAILQ_INSERT_TAIL(&globalqueue.request_list, &aiocb->work, node);
- qemu_cond_signal(&globalqueue.cond);
+ } else {
+ qemu_cond_signal(&globalqueue.cond);
+ }
+ QTAILQ_INSERT_TAIL(&globalqueue.request_list, work, node);
qemu_mutex_unlock(&globalqueue.lock);
}
@@ -448,6 +448,17 @@ static int qemu_paio_error(struct qemu_paiocb *aiocb)
return ret;
}
+static void qemu_paio_submit(struct qemu_paiocb *aiocb)
+{
+ qemu_mutex_lock(&aiocb_mutex);
+ aiocb->ret = -EINPROGRESS;
+ aiocb->active = 0;
+ qemu_mutex_unlock(&aiocb_mutex);
+
+ aiocb->work.func = handle_work;
+ submit_work(&aiocb->work);
+}
+
static int posix_aio_process_queue(void *opaque)
{
PosixAioState *s = opaque;
- [Qemu-devel] [PATCH 00/12] Threadlet Infrastructure, Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 01/12] Add aiocb_mutex and aiocb_completion., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 03/12] Add callback function to ThreadletWork structure., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 05/12] Threadlet: Add submit_work threadlet API.,
Arun R Bharadwaj <=
- [Qemu-devel] [PATCH 04/12] Add ThreadletQueue., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 06/12] Threadlet: Add dequeue_work threadlet API and remove active field., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 07/12] Remove thread_create routine., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 08/12] Threadlet: Add aio_signal_handler threadlet API, Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 09/12] Remove all instances of CONFIG_THREAD, Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 11/12] Threadlets: Add functionality to create private queues., Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 10/12] Move threadlet code to qemu-threadlets.c, Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 12/12] Threadlets: Add documentation, Arun R Bharadwaj, 2011/01/20
- [Qemu-devel] [PATCH 02/12] Introduce work concept in posix-aio-compat.c, Arun R Bharadwaj, 2011/01/20