| #!/bin/sh |
| # |
| # SPDX-License-Identifier: BSD-2-Clause |
| # |
| # Copyright (c) 2018-2021 Gavin D. Howard and contributors. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # |
| # * Redistributions of source code must retain the above copyright notice, this |
| # list of conditions and the following disclaimer. |
| # |
| # * Redistributions in binary form must reproduce the above copyright notice, |
| # this list of conditions and the following disclaimer in the documentation |
| # and/or other materials provided with the distribution. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| # This script is only really useful for running on Linux. It tests the code to |
| # free temps in order to make an allocation work. In order to see it work, I |
| # suggest adding code after the following line in src/vm.c: |
| # |
| # if (BC_ERR(ptr == NULL)) bc_vm_fatalError(BC_ERR_FATAL_ALLOC_ERR); |
| # |
| # The code you should add is the following: |
| # |
| # bc_file_printf(&vm.ferr, "If you see this, the code worked.\n"); |
| # bc_file_flush(&vm.ferr, bc_flush_none); |
| # |
| # If you do not see the that message printed, the code did not work. Or, in the |
| # case of some allocators, like jemalloc, the allocator just isn't great with |
| # turning a bunch of small allocations into a bigger allocation, |
| |
| script="$0" |
| scriptdir=$(dirname "$script") |
| |
| export LANG=C |
| |
| virtlimit=1000000 |
| |
| ulimit -v $virtlimit |
| |
| # This script is designed to allocate lots of memory with a lot of caching of |
| # numbers (the function f() specifically). Then, it's designed allocate one |
| # large number and grow it until allocation failure (the function g()). |
| "$scriptdir/../bin/bc" <<*EOF |
| |
| define f(i, n) { |
| if (n == 0) return i; |
| return f(i + 1, n - 1) |
| } |
| |
| define g(n) { |
| t = (10^9)^(2^24) |
| while (n) { |
| n *= t |
| print "success\n" |
| } |
| } |
| |
| iterations=2000000 |
| |
| for (l=0; l < 100; l++) { |
| iterations |
| j = f(0, iterations$) |
| iterations += 100000 |
| print "here\n" |
| n=10^235929600 |
| g(n) |
| print "success\n" |
| n=0 |
| } |
| *EOF |