Generate benchmark suites in their packages

Author: Abduqodiri Qurbonzoda

examples/kotlin-multiplatform/src/commonMain/kotlin/nested/CommonBenchmark.kt

@@ -0,0 +1,26 @@
+package test.nested
+
+import kotlinx.benchmark.*
+import kotlin.math.*
+
+/**
+ * This benchmark is to test that benchmarks with the same name but located in different packages
+ * are handled correctly by the benchmarking plugin.
+ */
+@State(Scope.Benchmark)
+@Measurement(iterations = 3, time = 1, timeUnit = BenchmarkTimeUnit.SECONDS)
+@OutputTimeUnit(BenchmarkTimeUnit.MILLISECONDS)
+@BenchmarkMode(Mode.Throughput)
+class CommonBenchmark {
+    private var data = 0.0
+
+    @Setup
+    fun setUp() {
+        data = 3.0
+    }
+
+    @Benchmark
+    fun mathBenchmark(): Double {
+        return log(sqrt(data) * cos(data), 2.0)
+    }
+}

plugin/main/src/kotlinx/benchmark/gradle/SuiteSourceGenerator.kt

@@ -103,9 +103,9 @@ class SuiteSourceGenerator(val title: String, val module: ModuleDescriptor, val
         val originalName = original.fqNameSafe.shortName()
         val originalClass = ClassName(originalPackage.toString(), originalName.toString())
 
-        val benchmarkPackageName = originalPackage.child(Name.identifier("generated")).toString()
+        val benchmarkPackageName = "$mainBenchmarkPackage.$originalPackage"
         val benchmarkName = originalName.toString() + "_Descriptor"
-        val benchmarkClass = ClassName(mainBenchmarkPackage, benchmarkName)
+        val benchmarkClass = ClassName(benchmarkPackageName, benchmarkName)
 
         val functions = DescriptorUtils.getAllDescriptors(original.unsubstitutedMemberScope)
             .filterIsInstance<FunctionDescriptor>()
@@ -145,7 +145,7 @@ class SuiteSourceGenerator(val title: String, val module: ModuleDescriptor, val
         val teardownFunctions = functions
             .filter { it.annotations.any { it.fqName.toString() == teardownAnnotationFQN } }.reversed()
 
-        val file = FileSpec.builder(mainBenchmarkPackage, benchmarkName).apply {
+        val file = FileSpec.builder(benchmarkPackageName, benchmarkName).apply {
             declareObject(benchmarkClass) {
                 addAnnotation(suppressUnusedParameter)