Vendor import of lldb trunk r256945:

https://llvm.org/svn/llvm-project/lldb/trunk@256945

1 files changed, 73 insertions, 0 deletions

diff --git a/packages/Python/lldbsuite/test/lang/objc/print-obj/blocked.m b/packages/Python/lldbsuite/test/lang/objc/print-obj/blocked.m
new file mode 100644
index 0000000..ba24975
--- /dev/null
+++ b/packages/Python/lldbsuite/test/lang/objc/print-obj/blocked.m
@@ -0,0 +1,73 @@
+//===-- blocked.m --------------------------------------------------*- ObjC -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// This file is for testing running "print object" in a case where another thread
+// blocks the print object from making progress.  Set a breakpoint on the line in 
+// my_pthread_routine as indicated.  Then switch threads to the main thread, and
+// do print the lock_me object.  Since that will try to get the lock already gotten
+// by my_pthread_routime thread, it will have to switch to running all threads, and
+// that should then succeed.
+//
+
+#include <Foundation/Foundation.h>
+#include <pthread.h>
+
+static pthread_mutex_t test_mutex;
+
+static void Mutex_Init (void)
+{
+    pthread_mutexattr_t tmp_mutex_attr;
+    pthread_mutexattr_init(&tmp_mutex_attr);
+    pthread_mutex_init(&test_mutex, &tmp_mutex_attr);
+}
+
+@interface LockMe :NSObject
+{
+  
+}
+- (NSString *) description;
+@end
+
+@implementation LockMe 
+- (NSString *) description
+{
+    printf ("LockMe trying to get the lock.\n");
+    pthread_mutex_lock(&test_mutex);
+    printf ("LockMe got the lock.\n");
+    pthread_mutex_unlock(&test_mutex);
+    return @"I am pretty special.\n";
+}
+@end
+
+void *
+my_pthread_routine (void *data)
+{
+    printf ("my_pthread_routine about to enter.\n");  
+    pthread_mutex_lock(&test_mutex);
+    printf ("Releasing Lock.\n"); // Set a breakpoint here.
+    pthread_mutex_unlock(&test_mutex);
+    return NULL;
+}
+
+int
+main ()
+{
+  pthread_attr_t tmp_attr;
+  pthread_attr_init (&tmp_attr);
+  pthread_t my_pthread;
+
+  Mutex_Init ();
+
+  LockMe *lock_me = [[LockMe alloc] init];
+  pthread_create (&my_pthread, &tmp_attr, my_pthread_routine, NULL);
+
+  pthread_join (my_pthread, NULL);
+
+  return 0;
+}