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.

1 files changed, 1 insertions, 301 deletions

diff --git a/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c b/src/gallium/auxiliary/pipebuffer/pb_bufmgr_mm.c
index 969aab51b57..983a1053475 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;