forked from OSchip/llvm-project
114 lines
2.5 KiB
Plaintext
114 lines
2.5 KiB
Plaintext
// RUN: %clang_tsan %s -lc++ -fobjc-arc -lobjc -o %t -framework Foundation
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// RUN: %run %t 2>&1 | FileCheck %s
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// Check that we do not report races between:
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// - Object retain and initialize
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// - Object release and dealloc
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// - Object release and .cxx_destruct
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#import <Foundation/Foundation.h>
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#include "../test.h"
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invisible_barrier_t barrier2;
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class NeedCleanup {
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public:
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int x;
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NeedCleanup() {
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x = 1;
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}
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~NeedCleanup() {
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x = 0;
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}
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};
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@interface TestDeallocObject : NSObject {
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@public
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int v;
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}
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- (id)init;
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- (void)accessMember;
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- (void)dealloc;
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@end
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@implementation TestDeallocObject
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- (id)init {
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if ([super self]) {
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v = 1;
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return self;
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}
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return nil;
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}
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- (void)accessMember {
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int local = v;
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local++;
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}
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- (void)dealloc {
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v = 0;
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}
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@end
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@interface TestCXXDestructObject : NSObject {
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@public
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NeedCleanup cxxMemberWithCleanup;
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}
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- (void)accessMember;
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@end
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@implementation TestCXXDestructObject
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- (void)accessMember {
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int local = cxxMemberWithCleanup.x;
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local++;
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}
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@end
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@interface TestInitializeObject : NSObject
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@end
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@implementation TestInitializeObject
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static long InitializerAccessedGlobal = 0;
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+ (void)initialize {
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InitializerAccessedGlobal = 42;
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}
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@end
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int main(int argc, const char *argv[]) {
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// Ensure that there is no race when calling initialize on TestInitializeObject;
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// otherwise, the locking from ObjC runtime becomes observable. Also ensures that
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// blocks are dispatched to 2 different threads.
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barrier_init(&barrier, 2);
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// Ensure that objects are destructed during block object release.
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barrier_init(&barrier2, 3);
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TestDeallocObject *tdo = [[TestDeallocObject alloc] init];
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TestCXXDestructObject *tcxxdo = [[TestCXXDestructObject alloc] init];
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[tdo accessMember];
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[tcxxdo accessMember];
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{
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dispatch_queue_t q = dispatch_queue_create(NULL, DISPATCH_QUEUE_CONCURRENT);
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dispatch_async(q, ^{
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[TestInitializeObject new];
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barrier_wait(&barrier);
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long local = InitializerAccessedGlobal;
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local++;
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[tdo accessMember];
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[tcxxdo accessMember];
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barrier_wait(&barrier2);
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});
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dispatch_async(q, ^{
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barrier_wait(&barrier);
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[TestInitializeObject new];
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long local = InitializerAccessedGlobal;
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local++;
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[tdo accessMember];
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[tcxxdo accessMember];
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barrier_wait(&barrier2);
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});
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}
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barrier_wait(&barrier2);
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NSLog(@"Done.");
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return 0;
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}
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// CHECK: Done.
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// CHECK-NOT: ThreadSanitizer: data race
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