blob: 9ea03a424a481a5eab00ab6152cb36398f1e8eea [file] [log] [blame]
# Copyright 2019 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//base/allocator/partition_allocator/partition_alloc.gni")
import("//build_overrides/partition_alloc.gni")
if (is_ios) {
import("//build/config/ios/ios_sdk.gni")
}
declare_args() {
# Causes all the allocations to be routed via allocator_shim.cc.
use_allocator_shim = use_allocator_shim_default
# Use the new allocation event dispatcher to distribute events to event observers.
# If set to false, PoissonAllocationSampler will hook into PartitionAllocator and
# AllocatorShims directly.
use_allocation_event_dispatcher = true
}
assert(
!use_allocator_shim || is_linux || is_chromeos || is_android || is_win ||
is_fuchsia || is_apple,
"use_allocator_shim works only on Android, iOS, Linux, macOS, Fuchsia, " +
"and Windows.")
if (is_win && use_allocator_shim) {
# TODO(crbug.com/1245317): Add a comment indicating why the shim doesn't work.
assert(!is_component_build,
"The allocator shim doesn't work for the component build on Windows.")
}
# Chromium-specific asserts. External embedders _may_ elect to use these
# features even without PA-E.
if (!use_partition_alloc_as_malloc) {
# In theory, BackupRefPtr will work just fine without
# PartitionAlloc-Everywhere, but its scope would be limited to partitions
# that are invoked explicitly (not via malloc). These are only Blink
# partition, where we currently don't even use raw_ptr<T>.
assert(!enable_backup_ref_ptr_support,
"Chromium does not use BRP without PA-E")
# Pointer compression works only if all pointers are guaranteed to be
# allocated by PA (in one of its core pools, to be precise). In theory,
# this could be useful with partitions that are invoked explicitly. In
# practice, the pointers we have in mind for compression (scoped_refptr<>,
# unique_ptr<>) require PA-E.
assert(!enable_pointer_compression_support,
"Pointer compressions likely doesn't make sense without PA-E")
}