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