1// Copyright (C) 2019 The Android Open Source Project
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package cc
16
17import (
18	"sync"
19
20	"android/soong/android"
21)
22
23type syspropLibraryInterface interface {
24	BaseModuleName() string
25	CcModuleName() string
26}
27
28var (
29	syspropImplLibrariesKey  = android.NewOnceKey("syspropImplLibirares")
30	syspropImplLibrariesLock sync.Mutex
31)
32
33func syspropImplLibraries(config android.Config) map[string]string {
34	return config.Once(syspropImplLibrariesKey, func() interface{} {
35		return make(map[string]string)
36	}).(map[string]string)
37}
38
39// gather list of sysprop libraries
40func SyspropMutator(mctx android.BottomUpMutatorContext) {
41	if m, ok := mctx.Module().(syspropLibraryInterface); ok {
42		syspropImplLibraries := syspropImplLibraries(mctx.Config())
43		syspropImplLibrariesLock.Lock()
44		defer syspropImplLibrariesLock.Unlock()
45
46		syspropImplLibraries[m.BaseModuleName()] = m.CcModuleName()
47	}
48}
49