/*-*- mode:c;indent-tabs-mode:t;c-basic-offset:8;tab-width:8;coding:utf-8 -*-│ │ vi: set noet ft=c ts=8 sw=8 fenc=utf-8 :vi │ ╞══════════════════════════════════════════════════════════════════════════════╡ │ Copyright 2016 Google Inc. │ │ │ │ Licensed under the Apache License, Version 2.0 (the "License"); │ │ you may not use this file except in compliance with the License. │ │ You may obtain a copy of the License at │ │ │ │ http://www.apache.org/licenses/LICENSE-2.0 │ │ │ │ Unless required by applicable law or agreed to in writing, software │ │ distributed under the License is distributed on an "AS IS" BASIS, │ │ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. │ │ See the License for the specific language governing permissions and │ │ limitations under the License. │ ╚─────────────────────────────────────────────────────────────────────────────*/ #include "libc/mem/mem.h" #include "libc/str/str.h" #include "third_party/nsync/array.internal.h" void a_ensure_ (void *v, int delta, int sz) { typedef A_TYPE (void *) a_void_ptr; a_void_ptr *a = (a_void_ptr *) v; int omax = a->h_.max_; if (omax < 0) { omax = -omax; } if (a->h_.len_ + delta > omax) { int nmax = a->h_.len_ + delta; void *na; if (nmax < omax * 2) { nmax = omax * 2; } if (a->h_.max_ <= 0) { na = malloc (nmax * sz); memcpy (na, a->a_, omax*sz); } else { na = realloc (a->a_, nmax*sz); } bzero (omax *sz + (char *)na, (nmax - omax) * sz); a->a_ = (void **) na; a->h_.max_ = nmax; } }