add CoroutineSuspender.isPaused

GitOrigin-RevId: 2fb484bf129cca5640aa0bb6629f8effd876b8fb

platform/core-api/src/com/intellij/openapi/progress/suspender.kt

@@ -40,6 +40,8 @@ fun coroutineSuspender(active: Boolean = true): CoroutineSuspender = CoroutineSu
 @ApiStatus.NonExtendable
 interface CoroutineSuspender : CoroutineContext {
 
+  fun isPaused(): Boolean
+
   fun pause()
 
   fun resume()
@@ -68,6 +70,10 @@ internal class CoroutineSuspenderElement(active: Boolean)
     if (active) CoroutineSuspenderState.Active else EMPTY_PAUSED_STATE
   )
 
+  override fun isPaused(): Boolean {
+    return myState.get() is CoroutineSuspenderState.Paused
+  }
+
   override fun pause() {
     myState.compareAndSet(CoroutineSuspenderState.Active, EMPTY_PAUSED_STATE)
   }

platform/platform-tests/testSrc/com/intellij/openapi/progress/impl/CoroutineSuspenderTest.kt

@@ -13,6 +13,7 @@ class CoroutineSuspenderTest : LightPlatformTestCase() {
     val count = 10
     val started = Semaphore(count, count)
     val suspender = coroutineSuspender(false)
+    assertTrue(suspender.isPaused())
     val job = launch(Dispatchers.Default + suspender) {
       repeat(count) {
         launch {
@@ -33,6 +34,7 @@ class CoroutineSuspenderTest : LightPlatformTestCase() {
     val started = Semaphore(count, count)
     val paused = Semaphore(count, count)
     val suspender = coroutineSuspender()
+    assertFalse(suspender.isPaused())
     val result = async(Dispatchers.Default + suspender) {
       (1..count).map {
         async { // coroutine context (including CoroutineSuspender) is inherited
@@ -46,6 +48,7 @@ class CoroutineSuspenderTest : LightPlatformTestCase() {
     }
     started.timeoutAcquire() // all coroutines are started
     suspender.pause() // pause suspender before next checkCanceled
+    assertTrue(suspender.isPaused())
     repeat(count) {
       paused.release() // let coroutines pause in next checkCanceled
     }