util: rename xmlpool.h to driconf.h

[mesa.git] / src / util / ralloc.c

diff --git a/src/util/ralloc.c b/src/util/ralloc.c
index 566f08ad94efd66fe891df7fc3ffd2873a54df5b..f36f8bf365425a2c7a18d95865d9f912f9d21234 100644 (file)
--- a/src/util/ralloc.c
+++ b/src/util/ralloc.c
@@ -53,7 +53,11 @@ _CRTIMP int _vscprintf(const char *format, va_list argptr);
  */
 struct
 #ifdef _MSC_VER
+#if _WIN64
+__declspec(align(16))
+#else
  __declspec(align(8))
+#endif
 #elif defined(__LP64__)
  __attribute__((aligned(16)))
 #else
@@ -61,7 +65,7 @@ struct
 #endif
    ralloc_header
 {
-#ifdef DEBUG
+#ifndef NDEBUG
    /* A canary value used to determine whether a pointer is ralloc'd. */
    unsigned canary;
 #endif
@@ -88,9 +92,7 @@ get_header(const void *ptr)
 {
    ralloc_header *info = (ralloc_header *) (((char *) ptr) -
                                            sizeof(ralloc_header));
-#ifdef DEBUG
    assert(info->canary == CANARY);
-#endif
    return info;
 }
 
@@ -140,7 +142,7 @@ ralloc_size(const void *ctx, size_t size)
 
    add_child(parent, info);
 
-#ifdef DEBUG
+#ifndef NDEBUG
    info->canary = CANARY;
 #endif
 
@@ -199,6 +201,21 @@ reralloc_size(const void *ctx, void *ptr, size_t size)
    return resize(ptr, size);
 }
 
+void *
+rerzalloc_size(const void *ctx, void *ptr, size_t old_size, size_t new_size)
+{
+   if (unlikely(ptr == NULL))
+      return rzalloc_size(ctx, new_size);
+
+   assert(ralloc_parent(ptr) == ctx);
+   ptr = resize(ptr, new_size);
+
+   if (new_size > old_size)
+      memset((char *)ptr + old_size, 0, new_size - old_size);
+
+   return ptr;
+}
+
 void *
 ralloc_array_size(const void *ctx, size_t size, unsigned count)
 {
@@ -226,6 +243,16 @@ reralloc_array_size(const void *ctx, void *ptr, size_t size, unsigned count)
    return reralloc_size(ctx, ptr, size * count);
 }
 
+void *
+rerzalloc_array_size(const void *ctx, void *ptr, size_t size,
+                     unsigned old_count, unsigned new_count)
+{
+   if (new_count > SIZE_MAX/size)
+      return NULL;
+
+   return rerzalloc_size(ctx, ptr, size * old_count, size * new_count);
+}
+
 void
 ralloc_free(void *ptr)
 {
@@ -285,7 +312,7 @@ ralloc_steal(const void *new_ctx, void *ptr)
       return;
 
    info = get_header(ptr);
-   parent = get_header(new_ctx);
+   parent = new_ctx ? get_header(new_ctx) : NULL;
 
    unlink_block(info);
 
@@ -553,14 +580,20 @@ ralloc_vasprintf_rewrite_tail(char **str, size_t *start, const char *fmt,
  * other buffers.
  */
 
-#define ALIGN_POT(x, y) (((x) + (y) - 1) & ~((y) - 1))
-
 #define MIN_LINEAR_BUFSIZE 2048
-#define SUBALLOC_ALIGNMENT sizeof(uintptr_t)
+#define SUBALLOC_ALIGNMENT 8
 #define LMAGIC 0x87b9c7d3
 
-struct linear_header {
-#ifdef DEBUG
+struct
+#ifdef _MSC_VER
+ __declspec(align(8))
+#elif defined(__LP64__)
+ __attribute__((aligned(16)))
+#else
+ __attribute__((aligned(8)))
+#endif
+   linear_header {
+#ifndef NDEBUG
    unsigned magic;   /* for debugging */
 #endif
    unsigned offset;  /* points to the first unused byte in the buffer */
@@ -610,7 +643,7 @@ create_linear_node(void *ralloc_ctx, unsigned min_size)
    if (unlikely(!node))
       return NULL;
 
-#ifdef DEBUG
+#ifndef NDEBUG
    node->magic = LMAGIC;
 #endif
    node->offset = 0;
@@ -651,6 +684,8 @@ linear_alloc_child(void *parent, unsigned size)
    ptr = (linear_size_chunk *)((char*)&latest[1] + latest->offset);
    ptr->size = size;
    latest->offset += full_size;
+
+   assert((uintptr_t)&ptr[1] % SUBALLOC_ALIGNMENT == 0);
    return &ptr[1];
 }