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/* Copyright (C) 1999-2007 Henry Cejtin, Matthew Fluet, Suresh
* Jagannathan, and Stephen Weeks.
* Copyright (C) 1997-2000 NEC Research Institute.
*
* MLton is released under a BSD-style license.
* See the file MLton-LICENSE for details.
*/
size_t sizeofArrayNoHeader (GC_state s,
GC_arrayLength numElements,
uint16_t bytesNonObjptrs, uint16_t numObjptrs) {
size_t result;
result = numElements * (bytesNonObjptrs + (numObjptrs * OBJPTR_SIZE));
/* Very small (including empty) arrays have OBJPTR_SIZE bytes for
* the forwarding pointer.
*/
if (result < OBJPTR_SIZE)
result = OBJPTR_SIZE;
return alignWithExtra (s, result, GC_ARRAY_HEADER_SIZE);
}
size_t sizeofStackNoHeader (__attribute__ ((unused)) GC_state s,
GC_stack stack) {
size_t result;
result = sizeof (struct GC_stack) + stack->reserved;
return result;
}
size_t sizeofObject (GC_state s, pointer p) {
size_t headerBytes, objectBytes;
GC_header header;
GC_objectTypeTag tag;
uint16_t bytesNonObjptrs, numObjptrs;
header = getHeader (p);
splitHeader (s, header, &tag, NULL, &bytesNonObjptrs, &numObjptrs);
if ((NORMAL_TAG == tag) or (WEAK_TAG == tag)) {
headerBytes = GC_NORMAL_HEADER_SIZE;
objectBytes = bytesNonObjptrs + (numObjptrs * OBJPTR_SIZE);
} else if (ARRAY_TAG == tag) {
headerBytes = GC_ARRAY_HEADER_SIZE;
objectBytes = sizeofArrayNoHeader (s, getArrayLength (p),
bytesNonObjptrs, numObjptrs);
} else { /* Stack. */
assert (STACK_TAG == tag);
headerBytes = GC_STACK_HEADER_SIZE;
objectBytes = sizeofStackNoHeader (s, (GC_stack)p);
}
return headerBytes + objectBytes;
}
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