1//===-- flags.inc -----------------------------------------------*- C++ -*-===// 2// 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4// See https://llvm.org/LICENSE.txt for license information. 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6// 7//===----------------------------------------------------------------------===// 8 9#ifndef SCUDO_FLAG 10#error "Define SCUDO_FLAG prior to including this file!" 11#endif 12 13SCUDO_FLAG(int, quarantine_size_kb, 0, 14 "Size (in kilobytes) of quarantine used to delay the actual " 15 "deallocation of chunks. Lower value may reduce memory usage but " 16 "decrease the effectiveness of the mitigation.") 17 18SCUDO_FLAG(int, thread_local_quarantine_size_kb, 0, 19 "Size (in kilobytes) of per-thread cache used to offload the global " 20 "quarantine. Lower value may reduce memory usage but might increase " 21 "the contention on the global quarantine.") 22 23SCUDO_FLAG(int, quarantine_max_chunk_size, 0, 24 "Size (in bytes) up to which chunks will be quarantined (if lower " 25 "than or equal to).") 26 27SCUDO_FLAG(bool, dealloc_type_mismatch, false, 28 "Terminate on a type mismatch in allocation-deallocation functions, " 29 "eg: malloc/delete, new/free, new/delete[], etc.") 30 31SCUDO_FLAG(bool, delete_size_mismatch, true, 32 "Terminate on a size mismatch between a sized-delete and the actual " 33 "size of a chunk (as provided to new/new[]).") 34 35SCUDO_FLAG(bool, zero_contents, false, "Zero chunk contents on allocation.") 36 37SCUDO_FLAG(bool, pattern_fill_contents, false, 38 "Pattern fill chunk contents on allocation.") 39 40SCUDO_FLAG(bool, may_return_null, true, 41 "Indicate whether the allocator should terminate instead of " 42 "returning NULL in otherwise non-fatal error scenarios, eg: OOM, " 43 "invalid allocation alignments, etc.") 44 45SCUDO_FLAG(int, release_to_os_interval_ms, SCUDO_ANDROID ? INT32_MIN : 5000, 46 "Interval (in milliseconds) at which to attempt release of unused " 47 "memory to the OS. Negative values disable the feature.") 48 49SCUDO_FLAG(int, allocation_ring_buffer_size, 32768, 50 "Entries to keep in the allocation ring buffer for scudo. " 51 "Values less or equal to zero disable the buffer.") 52