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authorTimothy Arceri <[email protected]>2017-03-08 15:33:38 +1100
committerTimothy Arceri <[email protected]>2017-03-12 17:49:03 +1100
commitb822d9dd67b502565b30da37b90c1d70114b8409 (patch)
tree26507a1aaec8caae71fa85ba0b885192d550b524 /src/util/u_queue.h
parent04ec4db8b5424872ebefed677cbd01fa3b40145d (diff)
gallium/util: move u_queue.{c,h} to src/util
This will allow us to use it outside of gallium for things like compressing shader cache entries. Reviewed-by: Marek Olšák <[email protected]>
Diffstat (limited to 'src/util/u_queue.h')
-rw-r--r--src/util/u_queue.h109
1 files changed, 109 insertions, 0 deletions
diff --git a/src/util/u_queue.h b/src/util/u_queue.h
new file mode 100644
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+++ b/src/util/u_queue.h
@@ -0,0 +1,109 @@
+/*
+ * Copyright © 2016 Advanced Micro Devices, Inc.
+ * All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
+ * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ */
+
+/* Job queue with execution in a separate thread.
+ *
+ * Jobs can be added from any thread. After that, the wait call can be used
+ * to wait for completion of the job.
+ */
+
+#ifndef U_QUEUE_H
+#define U_QUEUE_H
+
+#include <string.h>
+
+#include "util/list.h"
+#include "util/u_thread.h"
+
+/* Job completion fence.
+ * Put this into your job structure.
+ */
+struct util_queue_fence {
+ mtx_t mutex;
+ cnd_t cond;
+ int signalled;
+};
+
+typedef void (*util_queue_execute_func)(void *job, int thread_index);
+
+struct util_queue_job {
+ void *job;
+ struct util_queue_fence *fence;
+ util_queue_execute_func execute;
+ util_queue_execute_func cleanup;
+};
+
+/* Put this into your context. */
+struct util_queue {
+ const char *name;
+ mtx_t lock;
+ cnd_t has_queued_cond;
+ cnd_t has_space_cond;
+ thrd_t *threads;
+ int num_queued;
+ unsigned num_threads;
+ int kill_threads;
+ int max_jobs;
+ int write_idx, read_idx; /* ring buffer pointers */
+ struct util_queue_job *jobs;
+
+ /* for cleanup at exit(), protected by exit_mutex */
+ struct list_head head;
+};
+
+bool util_queue_init(struct util_queue *queue,
+ const char *name,
+ unsigned max_jobs,
+ unsigned num_threads);
+void util_queue_destroy(struct util_queue *queue);
+void util_queue_fence_init(struct util_queue_fence *fence);
+void util_queue_fence_destroy(struct util_queue_fence *fence);
+
+/* optional cleanup callback is called after fence is signaled: */
+void util_queue_add_job(struct util_queue *queue,
+ void *job,
+ struct util_queue_fence *fence,
+ util_queue_execute_func execute,
+ util_queue_execute_func cleanup);
+
+void util_queue_fence_wait(struct util_queue_fence *fence);
+int64_t util_queue_get_thread_time_nano(struct util_queue *queue,
+ unsigned thread_index);
+
+/* util_queue needs to be cleared to zeroes for this to work */
+static inline bool
+util_queue_is_initialized(struct util_queue *queue)
+{
+ return queue->threads != NULL;
+}
+
+static inline bool
+util_queue_fence_is_signalled(struct util_queue_fence *fence)
+{
+ return fence->signalled != 0;
+}
+
+#endif