On 18.07.2016 22:25, Rob Clark wrote:
Helper to block until all previous jobs are complete.
---
So I think this might end up being useful to me in some cases.. but
the implementation only works for a single threaded queue (which is
all I need). I could also just put a helper in my driver code.
Opinions?
What do you need it for? ISTR Marek had a half-finished patch for
dependencies, maybe that does what you need and is more expressive?
Cheers,
Nicolai
src/gallium/auxiliary/util/u_queue.c | 12 ++++++++++++
src/gallium/auxiliary/util/u_queue.h | 2 ++
2 files changed, 14 insertions(+)
diff --git a/src/gallium/auxiliary/util/u_queue.c
b/src/gallium/auxiliary/util/u_queue.c
index 838464f..861faca 100644
--- a/src/gallium/auxiliary/util/u_queue.c
+++ b/src/gallium/auxiliary/util/u_queue.c
@@ -242,3 +242,15 @@ util_queue_add_job(struct util_queue *queue,
pipe_condvar_signal(queue->has_queued_cond);
pipe_mutex_unlock(queue->lock);
}
+
+static void dummy_execute(void *job, int thread_index) {}
+
+/* blocks until all previously queued jobs complete: */
+void util_queue_barrier(struct util_queue *queue)
+{
+ struct util_queue_fence fence;
+ util_queue_fence_init(&fence);
+ util_queue_add_job(queue, &fence /*dummy*/, &fence, dummy_execute, NULL);
+ util_queue_job_wait(&fence);
+ util_queue_fence_destroy(&fence);
+}
diff --git a/src/gallium/auxiliary/util/u_queue.h
b/src/gallium/auxiliary/util/u_queue.h
index 59646cc..8a22ee0 100644
--- a/src/gallium/auxiliary/util/u_queue.h
+++ b/src/gallium/auxiliary/util/u_queue.h
@@ -85,6 +85,8 @@ void util_queue_add_job(struct util_queue *queue,
void util_queue_job_wait(struct util_queue_fence *fence);
+void util_queue_barrier(struct util_queue *queue);
+
/* util_queue needs to be cleared to zeroes for this to work */
static inline bool
util_queue_is_initialized(struct util_queue *queue)
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