diff options
author | Dave Airlie <[email protected]> | 2009-03-20 10:52:17 +1000 |
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committer | Dave Airlie <[email protected]> | 2009-03-20 10:52:17 +1000 |
commit | 407e8ae5b167b0193e1e5b1266a5d61ed836dfb5 (patch) | |
tree | 2d9d05a5c3122f41a13aa8bd9ae921c1176e6b0d /src/gallium/auxiliary/util/u_bitmask.h | |
parent | bdaa0341caffc353fd26bbd91865c2d86eed11c1 (diff) | |
parent | 114bb54324f22cb53bcd14607234d0acd74d37bd (diff) |
Merge remote branch 'main/master' into radeon-rewrite
Conflicts:
src/mesa/drivers/dri/r300/r300_cmdbuf.c
src/mesa/drivers/dri/r300/r300_state.c
src/mesa/drivers/dri/r300/r300_swtcl.c
src/mesa/drivers/dri/r300/radeon_ioctl.c
src/mesa/drivers/dri/radeon/radeon_screen.c
Diffstat (limited to 'src/gallium/auxiliary/util/u_bitmask.h')
-rw-r--r-- | src/gallium/auxiliary/util/u_bitmask.h | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_bitmask.h b/src/gallium/auxiliary/util/u_bitmask.h new file mode 100644 index 00000000000..87f1110296a --- /dev/null +++ b/src/gallium/auxiliary/util/u_bitmask.h @@ -0,0 +1,114 @@ +/************************************************************************** + * + * 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. + * + **************************************************************************/ + +/** + * @file + * Generic bitmask. + * + * @author Jose Fonseca <[email protected]> + */ + +#ifndef U_HANDLE_BITMASK_H_ +#define U_HANDLE_BITMASK_H_ + + +#ifdef __cplusplus +extern "C" { +#endif + + +#define UTIL_BITMASK_INVALID_INDEX (~0U) + + +/** + * Abstract data type to represent arbitrary set of bits. + */ +struct util_bitmask; + + +struct util_bitmask * +util_bitmask_create(void); + + +/** + * Search a cleared bit and set it. + * + * It searches for the first cleared bit. + * + * Returns the bit index on success, or UTIL_BITMASK_INVALID_INDEX on out of + * memory growing the bitmask. + */ +unsigned +util_bitmask_add(struct util_bitmask *bm); + +/** + * Set a bit. + * + * Returns the input index on success, or UTIL_BITMASK_INVALID_INDEX on out of + * memory growing the bitmask. + */ +unsigned +util_bitmask_set(struct util_bitmask *bm, + unsigned index); + +void +util_bitmask_clear(struct util_bitmask *bm, + unsigned index); + +boolean +util_bitmask_get(struct util_bitmask *bm, + unsigned index); + + +void +util_bitmask_destroy(struct util_bitmask *bm); + + +/** + * Search for the first set bit. + * + * Returns UTIL_BITMASK_INVALID_INDEX if a set bit cannot be found. + */ +unsigned +util_bitmask_get_first_index(struct util_bitmask *bm); + + +/** + * Search for the first set bit, starting from the giving index. + * + * Returns UTIL_BITMASK_INVALID_INDEX if a set bit cannot be found. + */ +unsigned +util_bitmask_get_next_index(struct util_bitmask *bm, + unsigned index); + + +#ifdef __cplusplus +} +#endif + +#endif /* U_HANDLE_BITMASK_H_ */ |