101 lines
3.2 KiB
Kotlin
101 lines
3.2 KiB
Kotlin
/*
|
|
* Copyright 2025 Sergey S. Chernov real.sergeych@gmail.com
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* JVM mixed workload micro-benchmark to exercise multiple hot paths together.
|
|
*/
|
|
|
|
import kotlinx.coroutines.runBlocking
|
|
import net.sergeych.lyng.PerfFlags
|
|
import net.sergeych.lyng.Scope
|
|
import net.sergeych.lyng.obj.ObjInt
|
|
import kotlin.test.Test
|
|
import kotlin.test.assertEquals
|
|
import kotlin.test.Ignore
|
|
|
|
@Ignore("TODO(compile-time-res): legacy tests disabled")
|
|
class MixedBenchmarkTest {
|
|
@Test
|
|
fun benchmarkMixedWorkloadRvalFastpath() = runBlocking {
|
|
// Keep iterations moderate to avoid CI timeouts
|
|
val n = 250_000
|
|
val script = """
|
|
class Acc() {
|
|
var x = 0
|
|
fun add(v) { x = x + v }
|
|
fun get() { x }
|
|
}
|
|
val acc = Acc()
|
|
val maybe = null
|
|
var s = 0
|
|
var i = 0
|
|
while (i < $n) {
|
|
// exercise locals + primitive ops
|
|
s = s + i
|
|
// elvis on null
|
|
s = s + (maybe ?: 0)
|
|
// boolean logic (short-circuit + primitive fast path)
|
|
if ((i % 3 == 0 && true) || false) { s = s + 1 } else { s = s + 2 }
|
|
// instance field/method with PIC
|
|
acc.add(1)
|
|
// simple index with list building every 1024 steps (rare path)
|
|
if (i % 1024 == 0) {
|
|
val lst = [0,1,2,3]
|
|
s = s + lst[2]
|
|
}
|
|
i = i + 1
|
|
}
|
|
s + acc.get()
|
|
""".trimIndent()
|
|
|
|
// OFF
|
|
PerfFlags.RVAL_FASTPATH = false
|
|
val scope1 = Scope()
|
|
val t0 = System.nanoTime()
|
|
val r1 = (scope1.eval(script) as ObjInt).value
|
|
val t1 = System.nanoTime()
|
|
println("[DEBUG_LOG] [BENCH] mixed x$n [RVAL_FASTPATH=OFF]: ${(t1 - t0)/1_000_000.0} ms")
|
|
|
|
// ON
|
|
PerfFlags.RVAL_FASTPATH = true
|
|
val scope2 = Scope()
|
|
val t2 = System.nanoTime()
|
|
val r2 = (scope2.eval(script) as ObjInt).value
|
|
val t3 = System.nanoTime()
|
|
println("[DEBUG_LOG] [BENCH] mixed x$n [RVAL_FASTPATH=ON]: ${(t3 - t2)/1_000_000.0} ms")
|
|
|
|
// Compute expected value in Kotlin to ensure correctness
|
|
var s = 0L
|
|
var i = 0
|
|
var acc = 0L
|
|
while (i < n) {
|
|
s += i
|
|
s += 0 // (maybe ?: 0)
|
|
if ((i % 3 == 0 && true) || false) s += 1 else s += 2
|
|
acc += 1
|
|
if (i % 1024 == 0) s += 2
|
|
i += 1
|
|
}
|
|
val expected = s + acc
|
|
assertEquals(expected, r1)
|
|
assertEquals(expected, r2)
|
|
|
|
// Reset flag for other tests
|
|
PerfFlags.RVAL_FASTPATH = false
|
|
}
|
|
}
|