DWORD R0HeapAllocateCB(DWORD dwRef)
{
ULONG *pul = (ULONG *)dwRef;
// _HeapAllocate(ULONG nbytes, ULONG flags);
return (DWORD)_HeapAllocate(pul[0], pul[1]);
}
LW_API
PVOID API_RegionGet (LW_OBJECT_HANDLE ulId, size_t stByteSize)
{
REGISTER PLW_CLASS_HEAP pheap;
REGISTER UINT16 usIndex;
REGISTER PVOID pvAllocate;
usIndex = _ObjectGetIndex(ulId);
if (LW_CPU_GET_CUR_NESTING()) { /* 不能在中断中调用 */
_DebugHandle(__ERRORMESSAGE_LEVEL, "called from ISR.\r\n");
_ErrorHandle(ERROR_KERNEL_IN_ISR);
return (LW_NULL);
}
#if LW_CFG_ARG_CHK_EN > 0
if (!stByteSize) {
_DebugHandle(__ERRORMESSAGE_LEVEL, "ulByteSize invalidate\r\n");
_ErrorHandle(ERROR_REGION_SIZE);
return (LW_NULL);
}
if (!_ObjectClassOK(ulId, _OBJECT_REGION)) { /* 对象类型检查 */
_DebugHandle(__ERRORMESSAGE_LEVEL, "region handle invalidate.\r\n");
_ErrorHandle(ERROR_KERNEL_HANDLE_NULL);
return (LW_NULL);
}
__KERNEL_ENTER(); /* 进入内核 */
if (_Heap_Index_Invalid(usIndex)) { /* 缓冲区索引检查 */
__KERNEL_EXIT(); /* 退出内核 */
_DebugHandle(__ERRORMESSAGE_LEVEL, "region handle invalidate.\r\n");
_ErrorHandle(ERROR_KERNEL_HANDLE_NULL);
return (LW_NULL);
}
#else
__KERNEL_ENTER(); /* 进入内核 */
#endif
pheap = &_K_heapBuffer[usIndex];
__KERNEL_EXIT(); /* 退出内核 */
pvAllocate = _HeapAllocate(pheap, stByteSize, __func__);
if (!pvAllocate) { /* 是否分配成功 */
_ErrorHandle(ERROR_REGION_NULL);
}
return (pvAllocate);
}
void * _cdecl
DebugNewHelper(size_t n)
{
PGPUInt8 *p;
PGPUInt32 dataSize, totalSize;
dataSize = n;
totalSize = dataSize + 3*sizeof(PGPUInt32);
do
{
p = (PGPUInt8 *) _HeapAllocate(totalSize, 0);
}
while ((!p) && __newhandler(totalSize));
if (NULL!=(int)(p))
{
PGPUInt8 *returnMe, *temp;
pgpDebugWhackMemory(p, totalSize); // upside the head
temp = (PGPUInt8 *) p;
returnMe = temp + 2*sizeof(PGPUInt32);
((PGPUInt32 *) temp)[0] = dataSize;
((PGPUInt32 *) temp)[1] = kGuardDWord;
temp += 2*sizeof(PGPUInt32) + dataSize;
((PGPUInt32 *) temp)[0] = kGuardDWord;
#if PGPDISK_DEBUGMEMORYLEAKS
totalBytesAllocated += n;
DebugOut("PGPdisk New: Alloced %d bytes, have %d total allocated\n",
n, totalBytesAllocated);
#endif // PGPDISK_DEBUGMEMORYLEAKS
return returnMe;
}
else
{
return NULL;
}
}
