objc4-437.tar.gz

[apple/objc4.git] / test / gdb-lock.m

diff --git a/test/gdb-lock.m b/test/gdb-lock.m
new file mode 100644 (file)
index 0000000..ee426d6
--- /dev/null
+++ b/test/gdb-lock.m
@@ -0,0 +1,59 @@
+#import <Foundation/Foundation.h>
+#import <objc/runtime.h>
+
+#include "test.h"
+
+// gcc -arch ppc -arch i386 -arch x86_64 -x objective-c gdb-lock.m -framework Foundation
+// CONFIG GC RR
+
+#if __cplusplus
+extern "C" 
+#endif
+   BOOL gdb_objc_isRuntimeLocked();
+
+@interface Foo : NSObject
+@end
+@implementation Foo
+- (void) foo;
+{
+}
+
+- (void) test: __attribute__((unused)) sender
+{
+    unsigned int x = 0;
+    Method foo = class_getInstanceMethod([Foo class], @selector(foo));
+    IMP fooIMP = method_getImplementation(foo);
+    const char *fooTypes = method_getTypeEncoding(foo);
+    while(1) {
+        NSAutoreleasePool *p = [[NSAutoreleasePool alloc] init];
+        char newSELName[100];
+        sprintf(newSELName, "a%u", x++);
+        SEL newSEL = sel_registerName(newSELName);
+        class_addMethod([Foo class], newSEL, fooIMP, fooTypes);
+        [self performSelector: newSEL];
+        [p drain];
+    }
+}
+@end
+
+int main() {
+    NSAutoreleasePool *p = [[NSAutoreleasePool alloc] init];
+    [NSThread detachNewThreadSelector: @selector(test:) toTarget: [Foo new] withObject: nil];
+    unsigned int x = 0;
+    unsigned int lockCount = 0;
+    while(1) {
+        if (gdb_objc_isRuntimeLocked())
+            lockCount++;
+        x++;
+        if (x > 1000000)
+            break;
+    }
+    if (lockCount < 10) {
+        fail("Runtime not locked very much.");
+    }
+    [p drain];
+
+    succeed(__FILE__);
+    
+    return 0;
+}
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