Update //third_party/protobuf to version 3.

third_party/protobuf/objectivec/Tests/GPBConcurrencyTests.m

+// Protocol Buffers - Google's data interchange format
+// Copyright 2014 Google Inc.  All rights reserved.
+// https://developers.google.com/protocol-buffers/
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#import "GPBTestUtilities.h"
+
+#import "google/protobuf/Unittest.pbobjc.h"
+#import "google/protobuf/UnittestObjc.pbobjc.h"
+
+static const int kNumThreads = 100;
+static const int kNumMessages = 100;
+
+// NOTE: Most of these tests don't "fail" in the sense that the XCTAsserts
+// trip.  Rather, the asserts simply exercise the apis, and if there is
+// a concurancy issue, the NSAsserts in the runtime code fire and/or the
+// code just crashes outright.
+
+@interface ConcurrencyTests : GPBTestCase
+@end
+
+@implementation ConcurrencyTests
+
+- (NSArray *)createThreadsWithSelector:(SEL)selector object:(id)object {
+  NSMutableArray *array = [NSMutableArray array];
+  for (NSUInteger i = 0; i < kNumThreads; i++) {
+    NSThread *thread =
+        [[NSThread alloc] initWithTarget:self selector:selector object:object];
+    [array addObject:thread];
+    [thread release];
+  }
+  return array;
+}
+
+- (NSArray *)createMessagesWithType:(Class)msgType {
+  NSMutableArray *array = [NSMutableArray array];
+  for (NSUInteger i = 0; i < kNumMessages; i++) {
+    [array addObject:[msgType message]];
+  }
+  return array;
+}
+
+- (void)startThreads:(NSArray *)threads {
+  for (NSThread *thread in threads) {
+    [thread start];
+  }
+}
+
+- (void)joinThreads:(NSArray *)threads {
+  for (NSThread *thread in threads) {
+    while (![thread isFinished])
+      ;
+  }
+}
+
+- (void)readForeignMessage:(NSArray *)messages {
+  for (NSUInteger i = 0; i < 10; i++) {
+    for (TestAllTypes *message in messages) {
+      XCTAssertEqual(message.optionalForeignMessage.c, 0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetMessageField {
+  NSArray *messages = [self createMessagesWithType:[TestAllTypes class]];
+  NSArray *threads =
+      [self createThreadsWithSelector:@selector(readForeignMessage:)
+                               object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  for (TestAllTypes *message in messages) {
+    XCTAssertFalse(message.hasOptionalForeignMessage);
+  }
+}
+
+- (void)readRepeatedInt32:(NSArray *)messages {
+  for (int i = 0; i < 10; i++) {
+    for (TestAllTypes *message in messages) {
+      XCTAssertEqual([message.repeatedInt32Array count], (NSUInteger)0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetRepeatedIntField {
+  NSArray *messages = [self createMessagesWithType:[TestAllTypes class]];
+  NSArray *threads =
+      [self createThreadsWithSelector:@selector(readRepeatedInt32:)
+                               object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  for (TestAllTypes *message in messages) {
+    XCTAssertEqual([message.repeatedInt32Array count], (NSUInteger)0);
+  }
+}
+
+- (void)readRepeatedString:(NSArray *)messages {
+  for (int i = 0; i < 10; i++) {
+    for (TestAllTypes *message in messages) {
+      XCTAssertEqual([message.repeatedStringArray count], (NSUInteger)0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetRepeatedStringField {
+  NSArray *messages = [self createMessagesWithType:[TestAllTypes class]];
+  NSArray *threads =
+      [self createThreadsWithSelector:@selector(readRepeatedString:)
+                               object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  for (TestAllTypes *message in messages) {
+    XCTAssertEqual([message.repeatedStringArray count], (NSUInteger)0);
+  }
+}
+
+- (void)readInt32Int32Map:(NSArray *)messages {
+  for (int i = 0; i < 10; i++) {
+    for (TestRecursiveMessageWithRepeatedField *message in messages) {
+      XCTAssertEqual([message.iToI count], (NSUInteger)0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetInt32Int32MapField {
+  NSArray *messages =
+      [self createMessagesWithType:[TestRecursiveMessageWithRepeatedField class]];
+  NSArray *threads =
+      [self createThreadsWithSelector:@selector(readInt32Int32Map:)
+                               object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  for (TestRecursiveMessageWithRepeatedField *message in messages) {
+    XCTAssertEqual([message.iToI count], (NSUInteger)0);
+  }
+}
+
+- (void)readStringStringMap:(NSArray *)messages {
+  for (int i = 0; i < 10; i++) {
+    for (TestRecursiveMessageWithRepeatedField *message in messages) {
+      XCTAssertEqual([message.strToStr count], (NSUInteger)0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetStringStringMapField {
+  NSArray *messages =
+      [self createMessagesWithType:[TestRecursiveMessageWithRepeatedField class]];
+  NSArray *threads =
+      [self createThreadsWithSelector:@selector(readStringStringMap:)
+                               object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  for (TestRecursiveMessageWithRepeatedField *message in messages) {
+    XCTAssertEqual([message.strToStr count], (NSUInteger)0);
+  }
+}
+
+- (void)readOptionalForeignMessageExtension:(NSArray *)messages {
+  for (int i = 0; i < 10; i++) {
+    for (TestAllExtensions *message in messages) {
+      ForeignMessage *foreign =
+          [message getExtension:[UnittestRoot optionalForeignMessageExtension]];
+      XCTAssertEqual(foreign.c, 0);
+    }
+  }
+}
+
+- (void)testConcurrentReadOfUnsetExtensionField {
+  NSArray *messages = [self createMessagesWithType:[TestAllExtensions class]];
+  SEL sel = @selector(readOptionalForeignMessageExtension:);
+  NSArray *threads = [self createThreadsWithSelector:sel object:messages];
+  [self startThreads:threads];
+  [self joinThreads:threads];
+  GPBExtensionDescriptor *extension =
+      [UnittestRoot optionalForeignMessageExtension];
+  for (TestAllExtensions *message in messages) {
+    XCTAssertFalse([message hasExtension:extension]);
+  }
+}
+
+@end