From 17158c2f00f5bee29ec8239367fd5498f22e4a91 Mon Sep 17 00:00:00 2001 From: José Fonseca Date: Tue, 19 Feb 2008 12:24:42 +0900 Subject: Move mm.c code into util module. Using the u_ prefix to distingish the c source files that support gallium interfaces and those that have really no relation with gallium itself. --- src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c | 302 +----------------------- src/gallium/auxiliary/rtasm/Makefile | 5 +- src/gallium/auxiliary/rtasm/SConscript | 3 +- src/gallium/auxiliary/rtasm/mm.c | 283 ---------------------- src/gallium/auxiliary/rtasm/mm.h | 89 ------- src/gallium/auxiliary/rtasm/rtasm_execmem.c | 2 +- src/gallium/auxiliary/util/Makefile | 3 +- src/gallium/auxiliary/util/SConscript | 1 + src/gallium/auxiliary/util/u_mm.c | 283 ++++++++++++++++++++++ src/gallium/auxiliary/util/u_mm.h | 91 +++++++ 10 files changed, 382 insertions(+), 680 deletions(-) delete mode 100644 src/gallium/auxiliary/rtasm/mm.c delete mode 100644 src/gallium/auxiliary/rtasm/mm.h create mode 100644 src/gallium/auxiliary/util/u_mm.c create mode 100644 src/gallium/auxiliary/util/u_mm.h diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c index 969aab51b5..983a105347 100644 --- a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c +++ b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c @@ -1,7 +1,6 @@ /************************************************************************** * * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. - * Copyright 1999 Wittawat Yamwong * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a @@ -40,6 +39,7 @@ #include "pipe/p_debug.h" #include "pipe/p_thread.h" #include "pipe/p_util.h" +#include "util/u_mm.h" #include "pb_buffer.h" #include "pb_bufmgr.h" @@ -50,306 +50,6 @@ #define SUPER(__derived) (&(__derived)->base) -struct mem_block -{ - struct mem_block *next, *prev; - struct mem_block *next_free, *prev_free; - struct mem_block *heap; - int ofs, size; - unsigned int free:1; - unsigned int reserved:1; -}; - - -#ifdef DEBUG -/** - * For debugging purposes. - */ -static void -mmDumpMemInfo(const struct mem_block *heap) -{ - debug_printf("Memory heap %p:\n", (void *)heap); - if (heap == 0) { - debug_printf(" heap == 0\n"); - } else { - const struct mem_block *p; - - for(p = heap->next; p != heap; p = p->next) { - debug_printf(" Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, - p->free ? 'F':'.', - p->reserved ? 'R':'.'); - } - - debug_printf("\nFree list:\n"); - - for(p = heap->next_free; p != heap; p = p->next_free) { - debug_printf(" FREE Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, - p->free ? 'F':'.', - p->reserved ? 'R':'.'); - } - - } - debug_printf("End of memory blocks\n"); -} -#endif - - -/** - * input: total size in bytes - * return: a heap pointer if OK, NULL if error - */ -static struct mem_block * -mmInit(int ofs, int size) -{ - struct mem_block *heap, *block; - - if (size <= 0) - return NULL; - - heap = CALLOC_STRUCT(mem_block); - if (!heap) - return NULL; - - block = CALLOC_STRUCT(mem_block); - if (!block) { - FREE(heap); - return NULL; - } - - heap->next = block; - heap->prev = block; - heap->next_free = block; - heap->prev_free = block; - - block->heap = heap; - block->next = heap; - block->prev = heap; - block->next_free = heap; - block->prev_free = heap; - - block->ofs = ofs; - block->size = size; - block->free = 1; - - return heap; -} - - -static struct mem_block * -SliceBlock(struct mem_block *p, - int startofs, int size, - int reserved, int alignment) -{ - struct mem_block *newblock; - - /* break left [p, newblock, p->next], then p = newblock */ - if (startofs > p->ofs) { - newblock = CALLOC_STRUCT(mem_block); - if (!newblock) - return NULL; - newblock->ofs = startofs; - newblock->size = p->size - (startofs - p->ofs); - newblock->free = 1; - newblock->heap = p->heap; - - newblock->next = p->next; - newblock->prev = p; - p->next->prev = newblock; - p->next = newblock; - - newblock->next_free = p->next_free; - newblock->prev_free = p; - p->next_free->prev_free = newblock; - p->next_free = newblock; - - p->size -= newblock->size; - p = newblock; - } - - /* break right, also [p, newblock, p->next] */ - if (size < p->size) { - newblock = CALLOC_STRUCT(mem_block); - if (!newblock) - return NULL; - newblock->ofs = startofs + size; - newblock->size = p->size - size; - newblock->free = 1; - newblock->heap = p->heap; - - newblock->next = p->next; - newblock->prev = p; - p->next->prev = newblock; - p->next = newblock; - - newblock->next_free = p->next_free; - newblock->prev_free = p; - p->next_free->prev_free = newblock; - p->next_free = newblock; - - p->size = size; - } - - /* p = middle block */ - p->free = 0; - - /* Remove p from the free list: - */ - p->next_free->prev_free = p->prev_free; - p->prev_free->next_free = p->next_free; - - p->next_free = 0; - p->prev_free = 0; - - p->reserved = reserved; - return p; -} - - -/** - * Allocate 'size' bytes with 2^align2 bytes alignment, - * restrict the search to free memory after 'startSearch' - * depth and back buffers should be in different 4mb banks - * to get better page hits if possible - * input: size = size of block - * align2 = 2^align2 bytes alignment - * startSearch = linear offset from start of heap to begin search - * return: pointer to the allocated block, 0 if error - */ -static struct mem_block * -mmAllocMem(struct mem_block *heap, int size, int align2, int startSearch) -{ - struct mem_block *p; - const int mask = (1 << align2)-1; - int startofs = 0; - int endofs; - - if (!heap || align2 < 0 || size <= 0) - return NULL; - - for (p = heap->next_free; p != heap; p = p->next_free) { - assert(p->free); - - startofs = (p->ofs + mask) & ~mask; - if ( startofs < startSearch ) { - startofs = startSearch; - } - endofs = startofs+size; - if (endofs <= (p->ofs+p->size)) - break; - } - - if (p == heap) - return NULL; - - assert(p->free); - p = SliceBlock(p,startofs,size,0,mask+1); - - return p; -} - - -#if 0 -/** - * Free block starts at offset - * input: pointer to a heap, start offset - * return: pointer to a block - */ -static struct mem_block * -mmFindBlock(struct mem_block *heap, int start) -{ - struct mem_block *p; - - for (p = heap->next; p != heap; p = p->next) { - if (p->ofs == start) - return p; - } - - return NULL; -} -#endif - - -static INLINE int -Join2Blocks(struct mem_block *p) -{ - /* XXX there should be some assertions here */ - - /* NOTE: heap->free == 0 */ - - if (p->free && p->next->free) { - struct mem_block *q = p->next; - - assert(p->ofs + p->size == q->ofs); - p->size += q->size; - - p->next = q->next; - q->next->prev = p; - - q->next_free->prev_free = q->prev_free; - q->prev_free->next_free = q->next_free; - - FREE(q); - return 1; - } - return 0; -} - - -/** - * Free block starts at offset - * input: pointer to a block - * return: 0 if OK, -1 if error - */ -static int -mmFreeMem(struct mem_block *b) -{ - if (!b) - return 0; - - if (b->free) { - debug_printf("block already free\n"); - return -1; - } - if (b->reserved) { - debug_printf("block is reserved\n"); - return -1; - } - - b->free = 1; - b->next_free = b->heap->next_free; - b->prev_free = b->heap; - b->next_free->prev_free = b; - b->prev_free->next_free = b; - - Join2Blocks(b); - if (b->prev != b->heap) - Join2Blocks(b->prev); - - return 0; -} - - -/** - * destroy MM - */ -static void -mmDestroy(struct mem_block *heap) -{ - struct mem_block *p; - - if (!heap) - return; - - for (p = heap->next; p != heap; ) { - struct mem_block *next = p->next; - FREE(p); - p = next; - } - - FREE(heap); -} - - struct mm_pb_manager { struct pb_manager base; diff --git a/src/gallium/auxiliary/rtasm/Makefile b/src/gallium/auxiliary/rtasm/Makefile index 7c8ac60794..edfae2a204 100644 --- a/src/gallium/auxiliary/rtasm/Makefile +++ b/src/gallium/auxiliary/rtasm/Makefile @@ -5,9 +5,8 @@ include $(TOP)/configs/current LIBNAME = rtasm DRIVER_SOURCES = \ - execmem.c \ - x86sse.c \ - mm.c + rtasm_execmem.c \ + rtasm_x86sse.c C_SOURCES = \ $(DRIVER_SOURCES) diff --git a/src/gallium/auxiliary/rtasm/SConscript b/src/gallium/auxiliary/rtasm/SConscript index de8456e0ca..6eca1fe4c0 100644 --- a/src/gallium/auxiliary/rtasm/SConscript +++ b/src/gallium/auxiliary/rtasm/SConscript @@ -4,8 +4,7 @@ rtasm = env.ConvenienceLibrary( target = 'rtasm', source = [ 'rtasm_execmem.c', - 'rtasm_x86sse.c', - 'mm.c', + 'rtasm_x86sse.c' ]) auxiliaries.insert(0, rtasm) diff --git a/src/gallium/auxiliary/rtasm/mm.c b/src/gallium/auxiliary/rtasm/mm.c deleted file mode 100644 index 15f50491da..0000000000 --- a/src/gallium/auxiliary/rtasm/mm.c +++ /dev/null @@ -1,283 +0,0 @@ -/* - * GLX Hardware Device Driver common code - * Copyright (C) 1999 Wittawat Yamwong - * - * 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, sublicense, - * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL - * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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_compiler.h" -#include "pipe/p_util.h" -#include "pipe/p_debug.h" - -#include "mm.h" - - -void -mmDumpMemInfo(const struct mem_block *heap) -{ - debug_printf("Memory heap %p:\n", (void *)heap); - if (heap == 0) { - debug_printf(" heap == 0\n"); - } else { - const struct mem_block *p; - - for(p = heap->next; p != heap; p = p->next) { - debug_printf(" Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, - p->free ? 'F':'.', - p->reserved ? 'R':'.'); - } - - debug_printf("\nFree list:\n"); - - for(p = heap->next_free; p != heap; p = p->next_free) { - debug_printf(" FREE Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, - p->free ? 'F':'.', - p->reserved ? 'R':'.'); - } - - } - debug_printf("End of memory blocks\n"); -} - -struct mem_block * -mmInit(int ofs, int size) -{ - struct mem_block *heap, *block; - - if (size <= 0) - return NULL; - - heap = CALLOC_STRUCT(mem_block); - if (!heap) - return NULL; - - block = CALLOC_STRUCT(mem_block); - if (!block) { - FREE(heap); - return NULL; - } - - heap->next = block; - heap->prev = block; - heap->next_free = block; - heap->prev_free = block; - - block->heap = heap; - block->next = heap; - block->prev = heap; - block->next_free = heap; - block->prev_free = heap; - - block->ofs = ofs; - block->size = size; - block->free = 1; - - return heap; -} - - -static struct mem_block * -SliceBlock(struct mem_block *p, - int startofs, int size, - int reserved, int alignment) -{ - struct mem_block *newblock; - - /* break left [p, newblock, p->next], then p = newblock */ - if (startofs > p->ofs) { - newblock = CALLOC_STRUCT(mem_block); - if (!newblock) - return NULL; - newblock->ofs = startofs; - newblock->size = p->size - (startofs - p->ofs); - newblock->free = 1; - newblock->heap = p->heap; - - newblock->next = p->next; - newblock->prev = p; - p->next->prev = newblock; - p->next = newblock; - - newblock->next_free = p->next_free; - newblock->prev_free = p; - p->next_free->prev_free = newblock; - p->next_free = newblock; - - p->size -= newblock->size; - p = newblock; - } - - /* break right, also [p, newblock, p->next] */ - if (size < p->size) { - newblock = CALLOC_STRUCT(mem_block); - if (!newblock) - return NULL; - newblock->ofs = startofs + size; - newblock->size = p->size - size; - newblock->free = 1; - newblock->heap = p->heap; - - newblock->next = p->next; - newblock->prev = p; - p->next->prev = newblock; - p->next = newblock; - - newblock->next_free = p->next_free; - newblock->prev_free = p; - p->next_free->prev_free = newblock; - p->next_free = newblock; - - p->size = size; - } - - /* p = middle block */ - p->free = 0; - - /* Remove p from the free list: - */ - p->next_free->prev_free = p->prev_free; - p->prev_free->next_free = p->next_free; - - p->next_free = 0; - p->prev_free = 0; - - p->reserved = reserved; - return p; -} - - -struct mem_block * -mmAllocMem(struct mem_block *heap, int size, int align2, int startSearch) -{ - struct mem_block *p; - const int mask = (1 << align2)-1; - int startofs = 0; - int endofs; - - if (!heap || align2 < 0 || size <= 0) - return NULL; - - for (p = heap->next_free; p != heap; p = p->next_free) { - assert(p->free); - - startofs = (p->ofs + mask) & ~mask; - if ( startofs < startSearch ) { - startofs = startSearch; - } - endofs = startofs+size; - if (endofs <= (p->ofs+p->size)) - break; - } - - if (p == heap) - return NULL; - - assert(p->free); - p = SliceBlock(p,startofs,size,0,mask+1); - - return p; -} - - -struct mem_block * -mmFindBlock(struct mem_block *heap, int start) -{ - struct mem_block *p; - - for (p = heap->next; p != heap; p = p->next) { - if (p->ofs == start) - return p; - } - - return NULL; -} - - -static INLINE int -Join2Blocks(struct mem_block *p) -{ - /* XXX there should be some assertions here */ - - /* NOTE: heap->free == 0 */ - - if (p->free && p->next->free) { - struct mem_block *q = p->next; - - assert(p->ofs + p->size == q->ofs); - p->size += q->size; - - p->next = q->next; - q->next->prev = p; - - q->next_free->prev_free = q->prev_free; - q->prev_free->next_free = q->next_free; - - FREE(q); - return 1; - } - return 0; -} - -int -mmFreeMem(struct mem_block *b) -{ - if (!b) - return 0; - - if (b->free) { - debug_printf("block already free\n"); - return -1; - } - if (b->reserved) { - debug_printf("block is reserved\n"); - return -1; - } - - b->free = 1; - b->next_free = b->heap->next_free; - b->prev_free = b->heap; - b->next_free->prev_free = b; - b->prev_free->next_free = b; - - Join2Blocks(b); - if (b->prev != b->heap) - Join2Blocks(b->prev); - - return 0; -} - - -void -mmDestroy(struct mem_block *heap) -{ - struct mem_block *p; - - if (!heap) - return; - - for (p = heap->next; p != heap; ) { - struct mem_block *next = p->next; - FREE(p); - p = next; - } - - FREE(heap); -} diff --git a/src/gallium/auxiliary/rtasm/mm.h b/src/gallium/auxiliary/rtasm/mm.h deleted file mode 100644 index f469b18d3e..0000000000 --- a/src/gallium/auxiliary/rtasm/mm.h +++ /dev/null @@ -1,89 +0,0 @@ -/* - * GLX Hardware Device Driver common code - * Copyright (C) 1999 Wittawat Yamwong - * - * 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, sublicense, - * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL - * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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. - */ - - -/** - * Memory manager code. Primarily used by device drivers to manage texture - * heaps, etc. - */ - - -#ifndef MM_H -#define MM_H - - -struct mem_block { - struct mem_block *next, *prev; - struct mem_block *next_free, *prev_free; - struct mem_block *heap; - int ofs,size; - unsigned int free:1; - unsigned int reserved:1; -}; - - - -/** - * input: total size in bytes - * return: a heap pointer if OK, NULL if error - */ -extern struct mem_block *mmInit(int ofs, int size); - -/** - * Allocate 'size' bytes with 2^align2 bytes alignment, - * restrict the search to free memory after 'startSearch' - * depth and back buffers should be in different 4mb banks - * to get better page hits if possible - * input: size = size of block - * align2 = 2^align2 bytes alignment - * startSearch = linear offset from start of heap to begin search - * return: pointer to the allocated block, 0 if error - */ -extern struct mem_block *mmAllocMem(struct mem_block *heap, int size, int align2, - int startSearch); - -/** - * Free block starts at offset - * input: pointer to a block - * return: 0 if OK, -1 if error - */ -extern int mmFreeMem(struct mem_block *b); - -/** - * Free block starts at offset - * input: pointer to a heap, start offset - * return: pointer to a block - */ -extern struct mem_block *mmFindBlock(struct mem_block *heap, int start); - -/** - * destroy MM - */ -extern void mmDestroy(struct mem_block *mmInit); - -/** - * For debuging purpose. - */ -extern void mmDumpMemInfo(const struct mem_block *mmInit); - -#endif diff --git a/src/gallium/auxiliary/rtasm/rtasm_execmem.c b/src/gallium/auxiliary/rtasm/rtasm_execmem.c index cb13db2498..9c78fa5626 100644 --- a/src/gallium/auxiliary/rtasm/rtasm_execmem.c +++ b/src/gallium/auxiliary/rtasm/rtasm_execmem.c @@ -46,7 +46,7 @@ #include #include -#include "mm.h" +#include "util/u_mm.h" #define EXEC_HEAP_SIZE (10*1024*1024) diff --git a/src/gallium/auxiliary/util/Makefile b/src/gallium/auxiliary/util/Makefile index b8cb148c4f..7cc2aa44f9 100644 --- a/src/gallium/auxiliary/util/Makefile +++ b/src/gallium/auxiliary/util/Makefile @@ -7,7 +7,8 @@ LIBNAME = util DRIVER_SOURCES = \ p_debug.c \ p_tile.c \ - p_util.c + p_util.c \ + u_mm.c C_SOURCES = \ $(DRIVER_SOURCES) diff --git a/src/gallium/auxiliary/util/SConscript b/src/gallium/auxiliary/util/SConscript index b126cf44d6..4717941434 100644 --- a/src/gallium/auxiliary/util/SConscript +++ b/src/gallium/auxiliary/util/SConscript @@ -6,6 +6,7 @@ util = env.ConvenienceLibrary( 'p_debug.c', 'p_tile.c', 'p_util.c', + 'u_mm.c', ]) auxiliaries.insert(0, util) diff --git a/src/gallium/auxiliary/util/u_mm.c b/src/gallium/auxiliary/util/u_mm.c new file mode 100644 index 0000000000..b49ae074e0 --- /dev/null +++ b/src/gallium/auxiliary/util/u_mm.c @@ -0,0 +1,283 @@ +/************************************************************************** + * + * Copyright (C) 1999 Wittawat Yamwong + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * WITTAWAT YAMWONG, OR ANY OTHER CONTRIBUTORS 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_compiler.h" +#include "pipe/p_util.h" +#include "pipe/p_debug.h" + +#include "util/u_mm.h" + + +void +mmDumpMemInfo(const struct mem_block *heap) +{ + debug_printf("Memory heap %p:\n", (void *)heap); + if (heap == 0) { + debug_printf(" heap == 0\n"); + } else { + const struct mem_block *p; + + for(p = heap->next; p != heap; p = p->next) { + debug_printf(" Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, + p->free ? 'F':'.', + p->reserved ? 'R':'.'); + } + + debug_printf("\nFree list:\n"); + + for(p = heap->next_free; p != heap; p = p->next_free) { + debug_printf(" FREE Offset:%08x, Size:%08x, %c%c\n",p->ofs,p->size, + p->free ? 'F':'.', + p->reserved ? 'R':'.'); + } + + } + debug_printf("End of memory blocks\n"); +} + +struct mem_block * +mmInit(int ofs, int size) +{ + struct mem_block *heap, *block; + + if (size <= 0) + return NULL; + + heap = CALLOC_STRUCT(mem_block); + if (!heap) + return NULL; + + block = CALLOC_STRUCT(mem_block); + if (!block) { + FREE(heap); + return NULL; + } + + heap->next = block; + heap->prev = block; + heap->next_free = block; + heap->prev_free = block; + + block->heap = heap; + block->next = heap; + block->prev = heap; + block->next_free = heap; + block->prev_free = heap; + + block->ofs = ofs; + block->size = size; + block->free = 1; + + return heap; +} + + +static struct mem_block * +SliceBlock(struct mem_block *p, + int startofs, int size, + int reserved, int alignment) +{ + struct mem_block *newblock; + + /* break left [p, newblock, p->next], then p = newblock */ + if (startofs > p->ofs) { + newblock = CALLOC_STRUCT(mem_block); + if (!newblock) + return NULL; + newblock->ofs = startofs; + newblock->size = p->size - (startofs - p->ofs); + newblock->free = 1; + newblock->heap = p->heap; + + newblock->next = p->next; + newblock->prev = p; + p->next->prev = newblock; + p->next = newblock; + + newblock->next_free = p->next_free; + newblock->prev_free = p; + p->next_free->prev_free = newblock; + p->next_free = newblock; + + p->size -= newblock->size; + p = newblock; + } + + /* break right, also [p, newblock, p->next] */ + if (size < p->size) { + newblock = CALLOC_STRUCT(mem_block); + if (!newblock) + return NULL; + newblock->ofs = startofs + size; + newblock->size = p->size - size; + newblock->free = 1; + newblock->heap = p->heap; + + newblock->next = p->next; + newblock->prev = p; + p->next->prev = newblock; + p->next = newblock; + + newblock->next_free = p->next_free; + newblock->prev_free = p; + p->next_free->prev_free = newblock; + p->next_free = newblock; + + p->size = size; + } + + /* p = middle block */ + p->free = 0; + + /* Remove p from the free list: + */ + p->next_free->prev_free = p->prev_free; + p->prev_free->next_free = p->next_free; + + p->next_free = 0; + p->prev_free = 0; + + p->reserved = reserved; + return p; +} + + +struct mem_block * +mmAllocMem(struct mem_block *heap, int size, int align2, int startSearch) +{ + struct mem_block *p; + const int mask = (1 << align2)-1; + int startofs = 0; + int endofs; + + if (!heap || align2 < 0 || size <= 0) + return NULL; + + for (p = heap->next_free; p != heap; p = p->next_free) { + assert(p->free); + + startofs = (p->ofs + mask) & ~mask; + if ( startofs < startSearch ) { + startofs = startSearch; + } + endofs = startofs+size; + if (endofs <= (p->ofs+p->size)) + break; + } + + if (p == heap) + return NULL; + + assert(p->free); + p = SliceBlock(p,startofs,size,0,mask+1); + + return p; +} + + +struct mem_block * +mmFindBlock(struct mem_block *heap, int start) +{ + struct mem_block *p; + + for (p = heap->next; p != heap; p = p->next) { + if (p->ofs == start) + return p; + } + + return NULL; +} + + +static INLINE int +Join2Blocks(struct mem_block *p) +{ + /* XXX there should be some assertions here */ + + /* NOTE: heap->free == 0 */ + + if (p->free && p->next->free) { + struct mem_block *q = p->next; + + assert(p->ofs + p->size == q->ofs); + p->size += q->size; + + p->next = q->next; + q->next->prev = p; + + q->next_free->prev_free = q->prev_free; + q->prev_free->next_free = q->next_free; + + FREE(q); + return 1; + } + return 0; +} + +int +mmFreeMem(struct mem_block *b) +{ + if (!b) + return 0; + + if (b->free) { + debug_printf("block already free\n"); + return -1; + } + if (b->reserved) { + debug_printf("block is reserved\n"); + return -1; + } + + b->free = 1; + b->next_free = b->heap->next_free; + b->prev_free = b->heap; + b->next_free->prev_free = b; + b->prev_free->next_free = b; + + Join2Blocks(b); + if (b->prev != b->heap) + Join2Blocks(b->prev); + + return 0; +} + + +void +mmDestroy(struct mem_block *heap) +{ + struct mem_block *p; + + if (!heap) + return; + + for (p = heap->next; p != heap; ) { + struct mem_block *next = p->next; + FREE(p); + p = next; + } + + FREE(heap); +} diff --git a/src/gallium/auxiliary/util/u_mm.h b/src/gallium/auxiliary/util/u_mm.h new file mode 100644 index 0000000000..b226b101cb --- /dev/null +++ b/src/gallium/auxiliary/util/u_mm.h @@ -0,0 +1,91 @@ +/************************************************************************** + * + * Copyright (C) 1999 Wittawat Yamwong + * + * 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, sublicense, + * 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 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 NONINFRINGEMENT. IN NO EVENT SHALL + * KEITH WHITWELL, OR ANY OTHER CONTRIBUTORS 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 + * Memory manager code. Primarily used by device drivers to manage texture + * heaps, etc. + */ + + +#ifndef _U_MM_H_ +#define _U_MM_H_ + + +struct mem_block { + struct mem_block *next, *prev; + struct mem_block *next_free, *prev_free; + struct mem_block *heap; + int ofs,size; + unsigned int free:1; + unsigned int reserved:1; +}; + + + +/** + * input: total size in bytes + * return: a heap pointer if OK, NULL if error + */ +extern struct mem_block *mmInit(int ofs, int size); + +/** + * Allocate 'size' bytes with 2^align2 bytes alignment, + * restrict the search to free memory after 'startSearch' + * depth and back buffers should be in different 4mb banks + * to get better page hits if possible + * input: size = size of block + * align2 = 2^align2 bytes alignment + * startSearch = linear offset from start of heap to begin search + * return: pointer to the allocated block, 0 if error + */ +extern struct mem_block *mmAllocMem(struct mem_block *heap, int size, int align2, + int startSearch); + +/** + * Free block starts at offset + * input: pointer to a block + * return: 0 if OK, -1 if error + */ +extern int mmFreeMem(struct mem_block *b); + +/** + * Free block starts at offset + * input: pointer to a heap, start offset + * return: pointer to a block + */ +extern struct mem_block *mmFindBlock(struct mem_block *heap, int start); + +/** + * destroy MM + */ +extern void mmDestroy(struct mem_block *mmInit); + +/** + * For debuging purpose. + */ +extern void mmDumpMemInfo(const struct mem_block *mmInit); + +#endif -- cgit v1.2.3