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 java
16
17import (
18	"sync"
19
20	"android/soong/android"
21)
22
23type syspropLibraryInterface interface {
24	BaseModuleName() string
25	Owner() string
26	HasPublicStub() bool
27	JavaPublicStubName() string
28}
29
30var (
31	syspropPublicStubsKey  = android.NewOnceKey("syspropPublicStubsJava")
32	syspropPublicStubsLock sync.Mutex
33)
34
35func init() {
36	android.PreDepsMutators(func(ctx android.RegisterMutatorsContext) {
37		ctx.BottomUp("sysprop_java", SyspropMutator).Parallel()
38	})
39}
40
41func syspropPublicStubs(config android.Config) map[string]string {
42	return config.Once(syspropPublicStubsKey, func() interface{} {
43		return make(map[string]string)
44	}).(map[string]string)
45}
46
47// gather list of sysprop libraries owned by platform.
48func SyspropMutator(mctx android.BottomUpMutatorContext) {
49	if m, ok := mctx.Module().(syspropLibraryInterface); ok {
50		if m.Owner() != "Platform" || !m.HasPublicStub() {
51			return
52		}
53
54		syspropPublicStubs := syspropPublicStubs(mctx.Config())
55		syspropPublicStubsLock.Lock()
56		defer syspropPublicStubsLock.Unlock()
57
58		syspropPublicStubs[m.BaseModuleName()] = m.JavaPublicStubName()
59	}
60}
61