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Re: [Qemu-devel] [PATCH v2 01/16] io: store reference to thread informat
From: |
Marc-André Lureau |
Subject: |
Re: [Qemu-devel] [PATCH v2 01/16] io: store reference to thread information in the QIOTask struct |
Date: |
Mon, 4 Feb 2019 11:37:57 +0100 |
On Wed, Jan 23, 2019 at 6:27 PM Daniel P. Berrangé <address@hidden> wrote:
>
> Currently the struct QIOTaskThreadData is only needed by the worker
> thread, but a subsequent patch will need to access it from another
> context.
>
> Signed-off-by: Daniel P. Berrangé <address@hidden>
Reviewed-by: Marc-André Lureau <address@hidden>
> ---
> io/task.c | 53 ++++++++++++++++++++++++++++-------------------------
> 1 file changed, 28 insertions(+), 25 deletions(-)
>
> diff --git a/io/task.c b/io/task.c
> index 2886a2c1bc..d100a754d3 100644
> --- a/io/task.c
> +++ b/io/task.c
> @@ -24,6 +24,14 @@
> #include "qemu/thread.h"
> #include "trace.h"
>
> +struct QIOTaskThreadData {
> + QIOTaskWorker worker;
> + gpointer opaque;
> + GDestroyNotify destroy;
> + GMainContext *context;
> +};
> +
> +
> struct QIOTask {
> Object *source;
> QIOTaskFunc func;
> @@ -32,6 +40,7 @@ struct QIOTask {
> Error *err;
> gpointer result;
> GDestroyNotify destroyResult;
> + struct QIOTaskThreadData *thread;
> };
>
>
> @@ -72,31 +81,23 @@ static void qio_task_free(QIOTask *task)
> }
>
>
> -struct QIOTaskThreadData {
> - QIOTask *task;
> - QIOTaskWorker worker;
> - gpointer opaque;
> - GDestroyNotify destroy;
> - GMainContext *context;
> -};
> -
> -
> static gboolean qio_task_thread_result(gpointer opaque)
> {
> - struct QIOTaskThreadData *data = opaque;
> + QIOTask *task = opaque;
>
> - trace_qio_task_thread_result(data->task);
> - qio_task_complete(data->task);
> + trace_qio_task_thread_result(task);
> + qio_task_complete(task);
>
> - if (data->destroy) {
> - data->destroy(data->opaque);
> + if (task->thread->destroy) {
> + task->thread->destroy(task->thread->opaque);
> }
>
> - if (data->context) {
> - g_main_context_unref(data->context);
> + if (task->thread->context) {
> + g_main_context_unref(task->thread->context);
> }
>
> - g_free(data);
> + g_free(task->thread);
> + task->thread = NULL;
>
> return FALSE;
> }
> @@ -104,22 +105,23 @@ static gboolean qio_task_thread_result(gpointer opaque)
>
> static gpointer qio_task_thread_worker(gpointer opaque)
> {
> - struct QIOTaskThreadData *data = opaque;
> + QIOTask *task = opaque;
> GSource *idle;
>
> - trace_qio_task_thread_run(data->task);
> - data->worker(data->task, data->opaque);
> + trace_qio_task_thread_run(task);
> +
> + task->thread->worker(task, task->thread->opaque);
>
> /* We're running in the background thread, and must only
> * ever report the task results in the main event loop
> * thread. So we schedule an idle callback to report
> * the worker results
> */
> - trace_qio_task_thread_exit(data->task);
> + trace_qio_task_thread_exit(task);
>
> idle = g_idle_source_new();
> - g_source_set_callback(idle, qio_task_thread_result, data, NULL);
> - g_source_attach(idle, data->context);
> + g_source_set_callback(idle, qio_task_thread_result, task, NULL);
> + g_source_attach(idle, task->thread->context);
>
> return NULL;
> }
> @@ -138,17 +140,18 @@ void qio_task_run_in_thread(QIOTask *task,
> g_main_context_ref(context);
> }
>
> - data->task = task;
> data->worker = worker;
> data->opaque = opaque;
> data->destroy = destroy;
> data->context = context;
>
> + task->thread = data;
> +
> trace_qio_task_thread_start(task, worker, opaque);
> qemu_thread_create(&thread,
> "io-task-worker",
> qio_task_thread_worker,
> - data,
> + task,
> QEMU_THREAD_DETACHED);
> }
>
> --
> 2.20.1
>
- Re: [Qemu-devel] [PATCH v2 01/16] io: store reference to thread information in the QIOTask struct,
Marc-André Lureau <=