Swift exit().

SignalServiceKit/src/Util/OWSAsserts.h

@@ -153,17 +153,22 @@ NS_ASSUME_NONNULL_BEGIN
         OWSCFailWithoutLogging(_messageFormat, ##__VA_ARGS__);                                                         \
     } while (NO)
 
+void SwiftExit(NSString *message, const char *file, const char *function, int line);
 
 #define OWSFail(_messageFormat, ...)                                                                                   \
     do {                                                                                                               \
         OWSFailDebug(_messageFormat, ##__VA_ARGS__);                                                                   \
-        exit(0);                                                                                                       \
+                                                                                                                       \
+        NSString *_message = [NSString stringWithFormat:_messageFormat, ##__VA_ARGS__];                                \
+        SwiftExit(_message, __FILE__, __PRETTY_FUNCTION__, __LINE__);                                                  \
     } while (0)
 
 #define OWSCFail(_messageFormat, ...)                                                                                  \
     do {                                                                                                               \
         OWSCFailDebug(_messageFormat, ##__VA_ARGS__);                                                                  \
-        exit(0);                                                                                                       \
+                                                                                                                       \
+        NSString *_message = [NSString stringWithFormat:_messageFormat, ##__VA_ARGS__];                                \
+        SwiftExit(_message, __FILE__, __PRETTY_FUNCTION__, __LINE__);                                                  \
     } while (NO)
 
 // Avoids Clang analyzer warning:

SignalServiceKit/src/Util/OWSAsserts.m

@@ -3,7 +3,15 @@
 //
 
 #import "OWSAsserts.h"
+#import <SignalServiceKit/SignalServiceKit-Swift.h>
 
 NS_ASSUME_NONNULL_BEGIN
 
+void SwiftExit(NSString *message, const char *file, const char *function, int line)
+{
+    NSString *_file = [NSString stringWithFormat:@"%s", file];
+    NSString *_function = [NSString stringWithFormat:@"%s", function];
+    [OWSSwiftUtils owsFail:message file:_file function:_function line:line];
+}
+
 NS_ASSUME_NONNULL_END

SignalServiceKit/src/Util/OWSSwiftUtils.swift

@@ -57,3 +57,15 @@ public func notImplemented(file: String = #file,
     owsFail("Method not implemented.", file: file, function: function, line: line)
 }
 
+@objc public class OWSSwiftUtils: NSObject {
+    // This method can be invoked from Obj-C to exit the app.
+    @objc public class func owsFail(_ logMessage: String,
+                              file: String = #file,
+                              function: String = #function,
+                              line: Int = #line) -> Never {
+
+        owsFailDebug(logMessage, file: file, function: function, line: line)
+        let formattedMessage = owsFormatLogMessage(logMessage, file: file, function: function, line: line)
+        fatalError(formattedMessage)
+    }
+}