Revert r4159 because of x64 test failures.

test/cctest/test-circular-queue.cc

-// Copyright 2010 the V8 project authors. All rights reserved.
-//
-// Tests of circular queues.
-
-#include "v8.h"
-#include "circular-queue-inl.h"
-#include "cctest.h"
-
-namespace i = v8::internal;
-
-using i::CircularQueue;
-using i::SamplingCircularQueue;
-
-
-TEST(SingleRecordCircularQueue) {
-  typedef int Record;
-  CircularQueue<Record> cq(sizeof(Record) * 2);
-  CHECK(cq.IsEmpty());
-  cq.Enqueue(1);
-  CHECK(!cq.IsEmpty());
-  Record rec = 0;
-  cq.Dequeue(&rec);
-  CHECK_EQ(1, rec);
-  CHECK(cq.IsEmpty());
-}
-
-
-TEST(MultipleRecordsCircularQueue) {
-  typedef int Record;
-  const int kQueueSize = 10;
-  CircularQueue<Record> cq(sizeof(Record) * (kQueueSize + 1));
-  CHECK(cq.IsEmpty());
-  cq.Enqueue(1);
-  CHECK(!cq.IsEmpty());
-  for (int i = 2; i <= 5; ++i) {
-    cq.Enqueue(i);
-    CHECK(!cq.IsEmpty());
-  }
-  Record rec = 0;
-  for (int i = 1; i <= 4; ++i) {
-    CHECK(!cq.IsEmpty());
-    cq.Dequeue(&rec);
-    CHECK_EQ(i, rec);
-  }
-  for (int i = 6; i <= 12; ++i) {
-    cq.Enqueue(i);
-    CHECK(!cq.IsEmpty());
-  }
-  for (int i = 5; i <= 12; ++i) {
-    CHECK(!cq.IsEmpty());
-    cq.Dequeue(&rec);
-    CHECK_EQ(i, rec);
-  }
-  CHECK(cq.IsEmpty());
-}
-
-
-TEST(SamplingCircularQueue) {
-  typedef int Record;
-  const int kRecordsPerChunk = 4;
-  SamplingCircularQueue scq(sizeof(Record),
-                            kRecordsPerChunk * sizeof(Record),
-                            3);
-  scq.SetUpProducer();
-  scq.SetUpConsumer();
-
-  // Check that we are using non-reserved values.
-  CHECK_NE(SamplingCircularQueue::kClear, 1);
-  CHECK_NE(SamplingCircularQueue::kEnd, 1);
-  // Fill up the first chunk.
-  CHECK_EQ(NULL, scq.StartDequeue());
-  for (int i = 1; i < 1 + kRecordsPerChunk; ++i) {
-    Record* rec = reinterpret_cast<Record*>(scq.Enqueue());
-    CHECK_NE(NULL, rec);
-    *rec = i;
-    CHECK_EQ(NULL, scq.StartDequeue());
-  }
-
-  // Fill up the second chunk. Consumption must still be unavailable.
-  CHECK_EQ(NULL, scq.StartDequeue());
-  for (int i = 10; i < 10 + kRecordsPerChunk; ++i) {
-    Record* rec = reinterpret_cast<Record*>(scq.Enqueue());
-    CHECK_NE(NULL, rec);
-    *rec = i;
-    CHECK_EQ(NULL, scq.StartDequeue());
-  }
-
-  Record* rec = reinterpret_cast<Record*>(scq.Enqueue());
-  CHECK_NE(NULL, rec);
-  *rec = 20;
-  // Now as we started filling up the third chunk, consumption
-  // must become possible.
-  CHECK_NE(NULL, scq.StartDequeue());
-
-  // Consume the first chunk.
-  for (int i = 1; i < 1 + kRecordsPerChunk; ++i) {
-    Record* rec = reinterpret_cast<Record*>(scq.StartDequeue());
-    CHECK_NE(NULL, rec);
-    CHECK_EQ(i, *rec);
-    CHECK_EQ(rec, reinterpret_cast<Record*>(scq.StartDequeue()));
-    scq.FinishDequeue();
-    CHECK_NE(rec, reinterpret_cast<Record*>(scq.StartDequeue()));
-  }
-  // Now consumption must not be possible, as consumer now polls
-  // the first chunk for emptinness.
-  CHECK_EQ(NULL, scq.StartDequeue());
-
-  scq.FlushResidualRecords();
-  // From now, consumer no more polls ahead of the current chunk,
-  // so it's possible to consume the second chunk.
-  CHECK_NE(NULL, scq.StartDequeue());
-  // Consume the second chunk
-  for (int i = 10; i < 10 + kRecordsPerChunk; ++i) {
-    Record* rec = reinterpret_cast<Record*>(scq.StartDequeue());
-    CHECK_NE(NULL, rec);
-    CHECK_EQ(i, *rec);
-    CHECK_EQ(rec, reinterpret_cast<Record*>(scq.StartDequeue()));
-    scq.FinishDequeue();
-    CHECK_NE(rec, reinterpret_cast<Record*>(scq.StartDequeue()));
-  }
-  // Consumption must still be possible as the first cell of the
-  // last chunk is not clean.
-  CHECK_NE(NULL, scq.StartDequeue());
-
-  scq.TearDownConsumer();
-  scq.TearDownProducer();
-}