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authorBrian Paul <[email protected]>2009-12-11 17:32:08 -0700
committerBrian Paul <[email protected]>2009-12-11 17:32:08 -0700
commitedbaca6fd14dace44637d994bbddad3cb0a5fafe (patch)
treef61693e93e55333f742aed1e7a3cc2d743d25b46 /src/gallium
parent92dc0f92b0f0fa2f3e4ba832ef2232169ce19ce8 (diff)
llvmpipe: initial fence implementation
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/drivers/llvmpipe/lp_fence.c109
-rw-r--r--src/gallium/drivers/llvmpipe/lp_fence.h60
2 files changed, 169 insertions, 0 deletions
diff --git a/src/gallium/drivers/llvmpipe/lp_fence.c b/src/gallium/drivers/llvmpipe/lp_fence.c
new file mode 100644
index 00000000000..14fbea6d993
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_fence.c
@@ -0,0 +1,109 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, 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 above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * 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 VMWARE 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.
+ *
+ **************************************************************************/
+
+
+#include "pipe/p_screen.h"
+#include "util/u_memory.h"
+#include "lp_fence.h"
+
+
+struct lp_fence *
+lp_fence_create(unsigned rank)
+{
+ struct lp_fence *fence = CALLOC_STRUCT(lp_fence);
+
+ pipe_reference_init(&fence->reference, 1);
+
+ pipe_mutex_init(fence->mutex);
+ pipe_condvar_init(fence->signalled);
+
+ fence->rank = rank;
+
+ return fence;
+}
+
+
+static void
+lp_fence_destroy(struct lp_fence *fence)
+{
+ pipe_mutex_destroy(fence->mutex);
+ pipe_condvar_destroy(fence->signalled);
+ FREE(fence);
+}
+
+
+static void
+llvmpipe_fence_reference(struct pipe_screen *screen,
+ struct pipe_fence_handle **ptr,
+ struct pipe_fence_handle *fence)
+{
+ struct lp_fence *old = (struct lp_fence *) *ptr;
+ struct lp_fence *f = (struct lp_fence *) fence;
+
+ if (pipe_reference((struct pipe_reference**)ptr, &f->reference)) {
+ lp_fence_destroy(old);
+ }
+}
+
+
+static int
+llvmpipe_fence_signalled(struct pipe_screen *screen,
+ struct pipe_fence_handle *fence,
+ unsigned flag)
+{
+ struct lp_fence *f = (struct lp_fence *) fence;
+
+ return f->count == f->rank;
+}
+
+
+static int
+llvmpipe_fence_finish(struct pipe_screen *screen,
+ struct pipe_fence_handle *fence_handle,
+ unsigned flag)
+{
+ struct lp_fence *fence = (struct lp_fence *) fence_handle;
+
+ pipe_mutex_lock(fence->mutex);
+ while (fence->count < fence->rank) {
+ pipe_condvar_wait(fence->signalled, fence->mutex);
+ }
+ pipe_mutex_unlock(fence->mutex);
+
+ return 0;
+}
+
+
+
+
+void
+llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen)
+{
+ screen->fence_reference = llvmpipe_fence_reference;
+ screen->fence_signalled = llvmpipe_fence_signalled;
+ screen->fence_finish = llvmpipe_fence_finish;
+}
diff --git a/src/gallium/drivers/llvmpipe/lp_fence.h b/src/gallium/drivers/llvmpipe/lp_fence.h
new file mode 100644
index 00000000000..d45318f9e47
--- /dev/null
+++ b/src/gallium/drivers/llvmpipe/lp_fence.h
@@ -0,0 +1,60 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, 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 above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ * 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 VMWARE 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.
+ *
+ **************************************************************************/
+
+
+#ifndef LP_FENCE_H
+#define LP_FENCE_H
+
+
+#include "pipe/p_refcnt.h"
+#include "pipe/p_thread.h"
+
+
+struct pipe_screen;
+
+
+struct lp_fence
+{
+ struct pipe_reference reference;
+
+ pipe_mutex mutex;
+ pipe_condvar signalled;
+
+ unsigned rank;
+ unsigned count;
+};
+
+
+struct lp_fence *
+lp_fence_create(unsigned rank);
+
+
+void
+llvmpipe_init_screen_fence_funcs(struct pipe_screen *screen);
+
+
+#endif /* LP_FENCE_H */