From 0a60c5147e2211172bc899e87cbd971572022f91 Mon Sep 17 00:00:00 2001
From: Karlatemp <kar@kasukusakura.com>
Date: Wed, 5 Apr 2023 13:10:47 +0800
Subject: [PATCH] [build] Use project lazy instead of global lazy

---
 build.gradle.kts                            |  1 +
 buildSrc/src/main/kotlin/HmppConfigure.kt   | 12 ++++----
 buildSrc/src/main/kotlin/LocalProperties.kt | 31 +++++++++++++++++++++
 3 files changed, 38 insertions(+), 6 deletions(-)

diff --git a/build.gradle.kts b/build.gradle.kts
index 5f5bd6396..2ebe1040f 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -45,6 +45,7 @@ plugins {
 
 osDetector = osdetector
 BuildSrcRootProjectHolder.value = rootProject
+BuildSrcRootProjectHolder.lastUpdateTime = System.currentTimeMillis()
 
 analyzes.CompiledCodeVerify.run { registerAllVerifyTasks() }
 
diff --git a/buildSrc/src/main/kotlin/HmppConfigure.kt b/buildSrc/src/main/kotlin/HmppConfigure.kt
index 709a09069..0604594d7 100644
--- a/buildSrc/src/main/kotlin/HmppConfigure.kt
+++ b/buildSrc/src/main/kotlin/HmppConfigure.kt
@@ -82,7 +82,7 @@ enum class HostArch {
 
 /// eg. "!a;!b" means to enable all targets but a or b
 /// eg. "a;b;!other" means to disable all targets but a or b
-val ENABLED_TARGETS by lazy {
+val ENABLED_TARGETS by projectLazy {
 
     val targets = getMiraiTargetFromGradle() // enable all by default
 
@@ -117,7 +117,7 @@ fun isTargetEnabled(name: String): Boolean {
 fun Set<String>.filterTargets() =
     this.filter { isTargetEnabled(it) }.toSet()
 
-val MAC_TARGETS: Set<String> by lazy {
+val MAC_TARGETS: Set<String> by projectLazy {
     setOf(
 //        "watchosX86",
         "macosX64",
@@ -142,13 +142,13 @@ val MAC_TARGETS: Set<String> by lazy {
     ).filterTargets()
 }
 
-val WIN_TARGETS by lazy { setOf("mingwX64").filterTargets() }
+val WIN_TARGETS by projectLazy { setOf("mingwX64").filterTargets() }
 
-val LINUX_TARGETS by lazy { setOf("linuxX64").filterTargets() }
+val LINUX_TARGETS by projectLazy { setOf("linuxX64").filterTargets() }
 
-val UNIX_LIKE_TARGETS by lazy { LINUX_TARGETS + MAC_TARGETS }
+val UNIX_LIKE_TARGETS by projectLazy { LINUX_TARGETS + MAC_TARGETS }
 
-val NATIVE_TARGETS by lazy { UNIX_LIKE_TARGETS + WIN_TARGETS }
+val NATIVE_TARGETS by projectLazy { UNIX_LIKE_TARGETS + WIN_TARGETS }
 
 private val POSSIBLE_NATIVE_TARGETS by lazy { setOf("mingwX64", "macosX64", "macosArm64", "linuxX64") }
 
diff --git a/buildSrc/src/main/kotlin/LocalProperties.kt b/buildSrc/src/main/kotlin/LocalProperties.kt
index 34834150f..5eb40a4a5 100644
--- a/buildSrc/src/main/kotlin/LocalProperties.kt
+++ b/buildSrc/src/main/kotlin/LocalProperties.kt
@@ -21,10 +21,41 @@ import java.util.*
 
 object BuildSrcRootProjectHolder {
     lateinit var value: Project
+    var lastUpdateTime: Long = 0
 }
 
 val rootProject: Project get() = BuildSrcRootProjectHolder.value
 
+fun <T> projectLazy(action: () -> T): Lazy<T> {
+    val projLazy = object : Lazy<T> {
+        private lateinit var delegate: Lazy<T>
+        private var holdTime: Long = -1
+
+        override val value: T
+            get() {
+                if (holdTime != BuildSrcRootProjectHolder.lastUpdateTime) {
+                    synchronized(this) {
+                        if (holdTime != BuildSrcRootProjectHolder.lastUpdateTime) {
+                            delegate = lazy(action)
+                            holdTime = BuildSrcRootProjectHolder.lastUpdateTime
+                        }
+                    }
+                }
+                return delegate.value
+            }
+
+        override fun isInitialized(): Boolean {
+            if (!::delegate.isInitialized) return false
+
+            if (holdTime == BuildSrcRootProjectHolder.lastUpdateTime) {
+                return delegate.isInitialized()
+            }
+            return false
+        }
+    }
+    return projLazy
+}
+
 
 private lateinit var localProperties: Properties