Collect garbage on explicit gc call

dlunch · dlunch · commit 6f40f90e5750 · 2024-12-19T10:31:58.000+09:00
diff --git a/java_runtime/src/classes/java/lang/system.rs b/java_runtime/src/classes/java/lang/system.rs
@@ -92,10 +92,12 @@ impl System {
         Ok(context.now() as _)
     }
 
-    async fn gc(_: &Jvm, _: &mut RuntimeContext) -> Result<i32> {
-        tracing::warn!("stub java.lang.System::gc()");
+    async fn gc(jvm: &Jvm, _: &mut RuntimeContext) -> Result<()> {
+        tracing::debug!("java.lang.System::gc()");
 
-        Ok(0)
+        jvm.collect_garbage()?;
+
+        Ok(())
     }
 
     async fn arraycopy(

Original file line number	Diff line number	Diff line change
`@@ -92,10 +92,12 @@ impl System {`
`92`	`92`	`Ok(context.now() as _)`
`93`	`93`	`}`
`94`	`94`
`95`		`- async fn gc(_: &Jvm, _: &mut RuntimeContext) -> Result<i32> {`
`96`		`- tracing::warn!("stub java.lang.System::gc()");`
	`95`	`+ async fn gc(jvm: &Jvm, _: &mut RuntimeContext) -> Result<()> {`
	`96`	`+ tracing::debug!("java.lang.System::gc()");`
`97`	`97`
`98`		`- Ok(0)`
	`98`	`+ jvm.collect_garbage()?;`
	`99`	`+`
	`100`	`+ Ok(())`
`99`	`101`	`}`
`100`	`102`
`101`	`103`	`async fn arraycopy(`