From 088532e8367dd681639e288665a3f0c9619c0cb5 Mon Sep 17 00:00:00 2001
From: Thomas Van Lenten <thomasvl@google.com>
Date: Fri, 16 Sep 2016 16:12:53 -0400
Subject: Fix up GTM_METHOD_CHECK so that it doesn't need the objectivec
 runtime calls.

---
 DebugUtils/GTMMethodCheck.m | 102 +-------------------------------------------
 1 file changed, 2 insertions(+), 100 deletions(-)

(limited to 'DebugUtils/GTMMethodCheck.m')

diff --git a/DebugUtils/GTMMethodCheck.m b/DebugUtils/GTMMethodCheck.m
index 0ff795e..5a9a363 100644
--- a/DebugUtils/GTMMethodCheck.m
+++ b/DebugUtils/GTMMethodCheck.m
@@ -16,103 +16,5 @@
 //  the License.
 //
 
-// Don't want any of this in release builds
-#ifdef DEBUG
-#import "GTMDefines.h"
-#import "GTMMethodCheck.h"
-#import "GTMObjC2Runtime.h"
-#import <dlfcn.h>
-
-void GTMMethodCheckMethodChecker(void) {
-  // Run through all the classes looking for class methods that are
-  // prefixed with xxGMMethodCheckMethod. If it finds one, it calls it.
-  // See GTMMethodCheck.h to see what it does.
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];
-#else
-  @autoreleasepool {
-#endif
-  // Since GTMMethodCheckMethodChecker is not exported, we should always find
-  // the copy in our local image. This will give us access to our local image
-  // in the methodCheckerInfo structure.
-  Dl_info methodCheckerInfo;
-  int foundMethodChecker = dladdr(GTMMethodCheckMethodChecker,
-                                  &methodCheckerInfo);
-  _GTMDevAssert(foundMethodChecker, @"GTMMethodCheckMethodChecker: Unable to "
-                @"get dladdr for GTMMethodCheckMethodChecker");
-  int numClasses = 0;
-  int newNumClasses = objc_getClassList(NULL, 0);
-  int i;
-  Class *classes = NULL;
-  while (numClasses < newNumClasses) {
-    numClasses = newNumClasses;
-    classes = (Class *)realloc(classes, sizeof(Class) * numClasses);
-    _GTMDevAssert(classes, @"Unable to allocate memory for classes");
-    newNumClasses = objc_getClassList(classes, numClasses);
-  }
-  for (i = 0; i < numClasses && classes; ++i) {
-    Class cls = classes[i];
-    const char *className = class_getName(cls);
-    _GTMDevAssert(className, @"GTMMethodCheckMethodChecker: Unable to "
-                  @"get className for class %d", i);
-    // Since we are looking for a class method (+xxGMMethodCheckMethod...)
-    // we need to query the isa pointer to see what methods it support, but
-    // send the method (if it's supported) to the class itself.
-    if (strcmp(className, "__ARCLite__") == 0) {
-      // __ARCLite__ is "magic" and does not have a metaClass.
-      continue;
-    }
-    Class metaClass = objc_getMetaClass(className);
-    _GTMDevAssert(metaClass, @"GTMMethodCheckMethodChecker: Unable to "
-                  @"get metaClass for %s", className);
-    unsigned int count;
-    Method *methods = class_copyMethodList(metaClass, &count);
-    if (count == 0) {
-      continue;
-    }
-    _GTMDevAssert(methods, @"GTMMethodCheckMethodChecker: Unable to "
-                  @"get methods for class %s", className);
-
-    unsigned int j;
-    for (j = 0; j < count; ++j) {
-      SEL selector = method_getName(methods[j]);
-      _GTMDevAssert(selector, @"GTMMethodCheckMethodChecker: Unable to "
-                    @"get selector for method %d of %s", j, className);
-      const char *name = sel_getName(selector);
-      _GTMDevAssert(selector, @"GTMMethodCheckMethodChecker: Unable to "
-                    @"get name for method %d of %s", j, className);
-      if (strstr(name, "xxGTMMethodCheckMethod") == name) {
-        Dl_info methodInfo;
-        IMP imp = method_getImplementation(methods[j]);
-        _GTMDevAssert(selector, @"GTMMethodCheckMethodChecker: Unable to "
-                      @"get IMP for method %s of %s", name, className);
-        int foundMethod = dladdr(imp, &methodInfo);
-        _GTMDevAssert(foundMethod, @"GTMMethodCheckMethodChecker: Unable to "
-                      @"get dladdr for method %s of %s", name, className);
-
-        // Check to make sure that the method we are checking comes from the
-        // same image that we are in. We compare the address of the local
-        // image (stored in |methodCheckerInfo| as noted above) with the
-        // address of the image which implements the method we want to
-        // check. If they match we continue. This does two things:
-        // a) minimizes the amount of calls we make to the xxxGTMMethodCheck
-        //    methods. They should only be called once.
-        // b) prevents initializers for various classes being called too
-        //    early
-        if (methodCheckerInfo.dli_fbase == methodInfo.dli_fbase) {
-          void (*func)(id, SEL) = (void *)imp;
-          func(cls, selector);
-        }
-      }
-    }
-    free(methods);
-  }
-  free(classes);
-#if !defined(__has_feature) || !__has_feature(objc_arc)
-  [pool drain];
-#else
-  }  // @autoreleasepool
-#endif
-}
-
-#endif  // DEBUG
+// TODO(dmaclach): This file is no longer needed. Delete once we have cleaned
+//                 up GTM projects.
-- 
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