1 files changed, 30 insertions, 1 deletions
diff --git a/runtime/utils.h b/runtime/utils.h
index bd52b686fd..5cca2964ce 100644
--- a/runtime/utils.h
+++ b/runtime/utils.h
@@ -26,8 +26,10 @@
 #include <vector>
 
 #include "arch/instruction_set.h"
+#include "base/casts.h"
 #include "base/logging.h"
 #include "base/mutex.h"
+#include "base/stringpiece.h"
 #include "globals.h"
 #include "primitive.h"
 
@@ -35,7 +37,6 @@ class BacktraceMap;
 
 namespace art {
 
-class ArtCode;
 class ArtField;
 class ArtMethod;
 class DexFile;
@@ -321,6 +322,34 @@ static inline const void* EntryPointToCodePointer(const void* entry_point) {
   return reinterpret_cast<const void*>(code);
 }
 
+using UsageFn = void (*)(const char*, ...);
+
+template <typename T>
+static void ParseUintOption(const StringPiece& option,
+                            const std::string& option_name,
+                            T* out,
+                            UsageFn Usage,
+                            bool is_long_option = true) {
+  std::string option_prefix = option_name + (is_long_option ? "=" : "");
+  DCHECK(option.starts_with(option_prefix));
+  const char* value_string = option.substr(option_prefix.size()).data();
+  int64_t parsed_integer_value;
+  if (!ParseInt(value_string, &parsed_integer_value)) {
+    Usage("Failed to parse %s '%s' as an integer", option_name.c_str(), value_string);
+  }
+  if (parsed_integer_value < 0) {
+    Usage("%s passed a negative value %d", option_name.c_str(), parsed_integer_value);
+  }
+  *out = dchecked_integral_cast<T>(parsed_integer_value);
+}
+
+void ParseDouble(const std::string& option,
+                 char after_char,
+                 double min,
+                 double max,
+                 double* parsed_value,
+                 UsageFn Usage);
+
 }  // namespace art
 
 #endif  // ART_RUNTIME_UTILS_H_