diff options
Diffstat (limited to 'src/gallium/drivers')
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_fence.c | 109 | ||||
-rw-r--r-- | src/gallium/drivers/llvmpipe/lp_fence.h | 60 |
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 0000000000..14fbea6d99 --- /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 0000000000..d45318f9e4 --- /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 */ |