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--- xnu/xnu-3248.50.21/libkern/c++/OSData.cpp
+++ xnu/xnu-1486.2.11/libkern/c++/OSData.cpp
@@ -49,30 +49,32 @@
#define EXTERNAL ((unsigned int) -1)
+#if OSALLOCDEBUG
+extern int debug_container_malloc_size;
+#define ACCUMSIZE(s) do { debug_container_malloc_size += (s); } while(0)
+#else
+#define ACCUMSIZE(s)
+#endif
+
bool OSData::initWithCapacity(unsigned int inCapacity)
{
- if (data)
- {
- OSCONTAINER_ACCUMSIZE(-((size_t)capacity));
- if (!inCapacity || (capacity < inCapacity))
- {
- // clean out old data's storage if it isn't big enough
- kfree(data, capacity);
- data = 0;
- capacity = 0;
- }
- }
-
if (!super::init())
return false;
+ if (data && (!inCapacity || capacity < inCapacity) ) {
+ // clean out old data's storage if it isn't big enough
+ kfree(data, capacity);
+ data = 0;
+ ACCUMSIZE(-capacity);
+ }
+
if (inCapacity && !data) {
- data = (void *) kalloc_container(inCapacity);
+ data = (void *) kalloc(inCapacity);
if (!data)
return false;
capacity = inCapacity;
- }
- OSCONTAINER_ACCUMSIZE(capacity);
+ ACCUMSIZE(inCapacity);
+ }
length = 0;
if (inCapacity < 16)
@@ -187,14 +189,13 @@
{
if (capacity != EXTERNAL && data && capacity) {
kfree(data, capacity);
- OSCONTAINER_ACCUMSIZE( -((size_t)capacity) );
+ ACCUMSIZE( -capacity );
} else if (capacity == EXTERNAL) {
- DeallocFunction freemem = reserved ? reserved->deallocFunction : NULL;
- if (freemem && data && length) {
- freemem(data, length);
+ DeallocFunction freemem = (DeallocFunction)reserved;
+ if (freemem && data && length) {
+ freemem(data, length);
+ }
}
- }
- if (reserved) kfree(reserved, sizeof(ExpansionData));
super::free();
}
@@ -216,29 +217,24 @@
unsigned int OSData::ensureCapacity(unsigned int newCapacity)
{
unsigned char * newData;
- unsigned int finalCapacity;
if (newCapacity <= capacity)
return capacity;
- finalCapacity = (((newCapacity - 1) / capacityIncrement) + 1)
+ newCapacity = (((newCapacity - 1) / capacityIncrement) + 1)
* capacityIncrement;
- // integer overflow check
- if (finalCapacity < newCapacity)
- return capacity;
-
- newData = (unsigned char *) kalloc_container(finalCapacity);
-
+ newData = (unsigned char *) kalloc(newCapacity);
+
if ( newData ) {
- bzero(newData + capacity, finalCapacity - capacity);
+ bzero(newData + capacity, newCapacity - capacity);
if (data) {
bcopy(data, newData, capacity);
kfree(data, capacity);
}
- OSCONTAINER_ACCUMSIZE( ((size_t)finalCapacity) - ((size_t)capacity) );
+ ACCUMSIZE( newCapacity - capacity );
data = (void *) newData;
- capacity = finalCapacity;
+ capacity = newCapacity;
}
return capacity;
@@ -392,16 +388,12 @@
unsigned int i;
const unsigned char *p;
unsigned char c;
- unsigned int serializeLength;
if (s->previouslySerialized(this)) return true;
if (!s->addXMLStartTag(this, "data")) return false;
- serializeLength = length;
- if (reserved && reserved->disableSerialization) serializeLength = 0;
-
- for (i = 0, p = (unsigned char *)data; i < serializeLength; i++, p++) {
+ for (i = 0, p = (unsigned char *)data; i < length; i++, p++) {
/* 3 bytes are encoded as 4 */
switch (i % 3) {
case 0:
@@ -439,24 +431,11 @@
return s->addXMLEndTag("data");
}
+/* Note I am just using the reserved pointer here instead of allocating a whole buffer
+ * to hold one pointer.
+ */
void OSData::setDeallocFunction(DeallocFunction func)
{
- if (!reserved)
- {
- reserved = (typeof(reserved)) kalloc_container(sizeof(ExpansionData));
- if (!reserved) return;
- bzero(reserved, sizeof(ExpansionData));
- }
- reserved->deallocFunction = func;
-}
-
-void OSData::setSerializable(bool serializable)
-{
- if (!reserved)
- {
- reserved = (typeof(reserved)) kalloc_container(sizeof(ExpansionData));
- if (!reserved) return;
- bzero(reserved, sizeof(ExpansionData));
- }
- reserved->disableSerialization = (!serializable);
-}
+ reserved = (ExpansionData *)func;
+ return;
+}