22 static PetscErrorCode PetscSegBufferAlloc_Private(PetscSegBuffer seg, PetscCount count)  in PetscSegBufferAlloc_Private()  argument
28   s = seg->head;  in PetscSegBufferAlloc_Private()
30 …alloc = PetscMax(s->used + count, PetscMin(1000000 / ((PetscCount)seg->unitbytes) + 1, s->alloc + …  in PetscSegBufferAlloc_Private()
31 …PetscCall(PetscMalloc(offsetof(struct _PetscSegBufferLink, u) + alloc * seg->unitbytes, &newlink));  in PetscSegBufferAlloc_Private()
37   seg->head         = newlink;  in PetscSegBufferAlloc_Private()
58 PetscErrorCode PetscSegBufferCreate(size_t unitbytes, PetscCount expected, PetscSegBuffer *seg)  in PetscSegBufferCreate()  argument
63   PetscCall(PetscNew(seg));  in PetscSegBufferCreate()
68   (*seg)->unitbytes = unitbytes;  in PetscSegBufferCreate()
69   (*seg)->head      = head;  in PetscSegBufferCreate()
90 PetscErrorCode PetscSegBufferGet(PetscSegBuffer seg, PetscCount count, void *buf)  in PetscSegBufferGet()  argument
95   s = seg->head;  in PetscSegBufferGet()
96   if (PetscUnlikely(s->used + count > s->alloc)) PetscCall(PetscSegBufferAlloc_Private(seg, count));  in PetscSegBufferGet()
97   s             = seg->head;  in PetscSegBufferGet()
98   *(char **)buf = &s->u.array[s->used * seg->unitbytes];  in PetscSegBufferGet()
115 PetscErrorCode PetscSegBufferDestroy(PetscSegBuffer *seg)  in PetscSegBufferDestroy()  argument
120   if (!*seg) PetscFunctionReturn(PETSC_SUCCESS);  in PetscSegBufferDestroy()
121   for (s = (*seg)->head; s;) {  in PetscSegBufferDestroy()
126   PetscCall(PetscFree(*seg));  in PetscSegBufferDestroy()
144 PetscErrorCode PetscSegBufferExtractTo(PetscSegBuffer seg, void *contig)  in PetscSegBufferExtractTo()  argument
151   unitbytes = seg->unitbytes;  in PetscSegBufferExtractTo()
152   s         = seg->head;  in PetscSegBufferExtractTo()
188 PetscErrorCode PetscSegBufferExtractAlloc(PetscSegBuffer seg, void *contiguous)  in PetscSegBufferExtractAlloc()  argument
194   s = seg->head;  in PetscSegBufferExtractAlloc()
196   PetscCall(PetscMalloc((s->used + s->tailused) * seg->unitbytes, &contig));  in PetscSegBufferExtractAlloc()
197   PetscCall(PetscSegBufferExtractTo(seg, contig));  in PetscSegBufferExtractAlloc()
217 PetscErrorCode PetscSegBufferExtractInPlace(PetscSegBuffer seg, void *contig)  in PetscSegBufferExtractInPlace()  argument
222   head = seg->head;  in PetscSegBufferExtractInPlace()
226     PetscCall(PetscSegBufferCreate(seg->unitbytes, head->used + head->tailused, &newseg));  in PetscSegBufferExtractInPlace()
227     PetscCall(PetscSegBufferExtractTo(seg, newseg->head->u.array));  in PetscSegBufferExtractInPlace()
228     seg->head    = newseg->head;  in PetscSegBufferExtractInPlace()
231     head = seg->head;  in PetscSegBufferExtractInPlace()
253 PetscErrorCode PetscSegBufferGetSize(PetscSegBuffer seg, PetscCount *usedsize)  in PetscSegBufferGetSize()  argument
256   *usedsize = seg->head->tailused + seg->head->used;  in PetscSegBufferGetSize()
273 PetscErrorCode PetscSegBufferUnuse(PetscSegBuffer seg, PetscCount unused)  in PetscSegBufferUnuse()  argument
278   head = seg->head;  in PetscSegBufferUnuse()