closes #606 reserveCustomFormatSpecifiers

Author: abumq

CHANGELOG.md

@@ -5,6 +5,9 @@
 - Fix documentation (see PR#597)
 - Fix buffer underflow in getBashOutput (see PR#596)
 
+### Updates
+- Added new function `Helpers::reserveCustomFormatSpecifier` (see #606)
+
 ## [9.95.3] - 13-10-2017
 ### Fixes
 - Multithreading issue fixed raised from last release at log builder

src/easylogging++.h

@@ -3795,6 +3795,11 @@ class Helpers : base::StaticClass {
   static inline const el::base::utils::CommandLineArgs* commandLineArgs(void) {
     return ELPP->commandLineArgs();
   }
+  /// @brief Reserve space for custom format specifiers for performance
+  /// @see std::vector::reserve
+  static inline void reserveCustomFormatSpecifiers(std::size_t size) {
+    ELPP->m_customFormatSpecifiers.reserve(size);
+  }
   /// @brief Installs user defined format specifier and handler
   static inline void installCustomFormatSpecifier(const CustomFormatSpecifier& customFormatSpecifier) {
     ELPP->installCustomFormatSpecifier(customFormatSpecifier);