xnu-6153.41.3.tar.gz

[apple/xnu.git] / iokit / Kernel / IOSharedDataQueue.cpp

diff --git a/iokit/Kernel/IOSharedDataQueue.cpp b/iokit/Kernel/IOSharedDataQueue.cpp
index 797583bf8a79a92cca2c942b27940a1be675c1be..71d3c681774f1ffa00555830bcf7a6628b6b78a3 100644 (file)
--- a/iokit/Kernel/IOSharedDataQueue.cpp
+++ b/iokit/Kernel/IOSharedDataQueue.cpp
@@ -50,7 +50,7 @@ IOSharedDataQueue *IOSharedDataQueue::withCapacity(UInt32 size)
        if (dataQueue) {
                if (!dataQueue->initWithCapacity(size)) {
                        dataQueue->release();
-                       dataQueue = 0;
+                       dataQueue = NULL;
                }
        }
 
@@ -65,7 +65,7 @@ IOSharedDataQueue::withEntries(UInt32 numEntries, UInt32 entrySize)
        if (dataQueue) {
                if (!dataQueue->initWithEntries(numEntries, entrySize)) {
                        dataQueue->release();
-                       dataQueue = 0;
+                       dataQueue = NULL;
                }
        }
 
@@ -98,7 +98,7 @@ IOSharedDataQueue::initWithCapacity(UInt32 size)
        }
 
        dataQueue = (IODataQueueMemory *)IOMallocAligned(allocSize, PAGE_SIZE);
-       if (dataQueue == 0) {
+       if (dataQueue == NULL) {
                return false;
        }
        bzero(dataQueue, allocSize);
@@ -150,9 +150,9 @@ IOSharedDataQueue::free()
 IOMemoryDescriptor *
 IOSharedDataQueue::getMemoryDescriptor()
 {
-       IOMemoryDescriptor *descriptor = 0;
+       IOMemoryDescriptor *descriptor = NULL;
 
-       if (dataQueue != 0) {
+       if (dataQueue != NULL) {
                descriptor = IOMemoryDescriptor::withAddress(dataQueue, getQueueSize() + DATA_QUEUE_MEMORY_HEADER_SIZE + DATA_QUEUE_MEMORY_APPENDIX_SIZE, kIODirectionOutIn);
        }
 
@@ -163,7 +163,7 @@ IOSharedDataQueue::getMemoryDescriptor()
 IODataQueueEntry *
 IOSharedDataQueue::peek()
 {
-       IODataQueueEntry *entry      = 0;
+       IODataQueueEntry *entry      = NULL;
        UInt32            headOffset;
        UInt32            tailOffset;
 
@@ -177,7 +177,7 @@ IOSharedDataQueue::peek()
        tailOffset = __c11_atomic_load((_Atomic UInt32 *)&dataQueue->tail, __ATOMIC_ACQUIRE);
 
        if (headOffset != tailOffset) {
-               volatile IODataQueueEntry * head = 0;
+               volatile IODataQueueEntry * head = NULL;
                UInt32              headSize     = 0;
                UInt32              headOffset   = dataQueue->head;
                UInt32              queueSize    = getQueueSize();
@@ -239,7 +239,7 @@ IOSharedDataQueue::enqueue(void * data, UInt32 dataSize)
                        entry = (IODataQueueEntry *)((UInt8 *)dataQueue->queue + tail);
 
                        entry->size = dataSize;
-                       memcpy(&entry->data, data, dataSize);
+                       __nochk_memcpy(&entry->data, data, dataSize);
 
                        // The tail can be out of bound when the size of the new entry
                        // exactly matches the available space at the end of the queue.
@@ -260,7 +260,7 @@ IOSharedDataQueue::enqueue(void * data, UInt32 dataSize)
                                ((IODataQueueEntry *)((UInt8 *)dataQueue->queue + tail))->size = dataSize;
                        }
 
-                       memcpy(&dataQueue->queue->data, data, dataSize);
+                       __nochk_memcpy(&dataQueue->queue->data, data, dataSize);
                        newTail = entrySize;
                } else {
                        return false; // queue is full
@@ -273,7 +273,7 @@ IOSharedDataQueue::enqueue(void * data, UInt32 dataSize)
                        entry = (IODataQueueEntry *)((UInt8 *)dataQueue->queue + tail);
 
                        entry->size = dataSize;
-                       memcpy(&entry->data, data, dataSize);
+                       __nochk_memcpy(&entry->data, data, dataSize);
                        newTail = tail + entrySize;
                } else {
                        return false; // queue is full
@@ -308,7 +308,7 @@ Boolean
 IOSharedDataQueue::dequeue(void *data, UInt32 *dataSize)
 {
        Boolean             retVal          = TRUE;
-       volatile IODataQueueEntry * entry   = 0;
+       volatile IODataQueueEntry *  entry  = NULL;
        UInt32              entrySize       = 0;
        UInt32              headOffset      = 0;
        UInt32              tailOffset      = 0;
@@ -324,7 +324,7 @@ IOSharedDataQueue::dequeue(void *data, UInt32 *dataSize)
        tailOffset = __c11_atomic_load((_Atomic UInt32 *)&dataQueue->tail, __ATOMIC_ACQUIRE);
 
        if (headOffset != tailOffset) {
-               volatile IODataQueueEntry * head = 0;
+               volatile IODataQueueEntry * head = NULL;
                UInt32              headSize     = 0;
                UInt32              queueSize    = getQueueSize();
 
@@ -372,7 +372,7 @@ IOSharedDataQueue::dequeue(void *data, UInt32 *dataSize)
                        // not enough space
                        return false;
                }
-               memcpy(data, (void *)entry->data, entrySize);
+               __nochk_memcpy(data, (void *)entry->data, entrySize);
                *dataSize = entrySize;
        }