Reduced executable size; reduced call sequence to "allowed" log function

contrib/epee/include/misc_log_ex.h

@@ -41,7 +41,7 @@
 #define MAX_LOG_FILES 50
 
 #define MCLOG_TYPE(level, cat, color, type, x) do { \
-    if (ELPP->vRegistry()->allowed(level, cat)) { \
+    if (el::Loggers::allowed(level, cat)) { \
       el::base::Writer(level, color, __FILE__, __LINE__, ELPP_FUNC, type).construct(cat) << x; \
     } \
   } while (0)
@@ -89,7 +89,7 @@
 
 #define IFLOG(level, cat, color, type, init, x) \
   do { \
-    if (ELPP->vRegistry()->allowed(level, cat)) { \
+    if (el::Loggers::allowed(level, cat)) { \
       init; \
       el::base::Writer(level, color, __FILE__, __LINE__, ELPP_FUNC, type).construct(cat) << x; \
     } \

external/easylogging++/easylogging++.cc

@@ -17,6 +17,7 @@
 #define EASYLOGGING_CC
 #include "easylogging++.h"
 
+#include <atomic>
 #include <unistd.h>
 
 #if defined(AUTO_INITIALIZE_EASYLOGGINGPP)
@@ -2035,7 +2036,7 @@ void RegisteredLoggers::unsafeFlushAll(void) {
 
 // VRegistry
 
-VRegistry::VRegistry(base::type::VerboseLevel level, base::type::EnumType* pFlags) : m_level(level), m_pFlags(pFlags), m_lowest_priority(INT_MAX) {
+VRegistry::VRegistry(base::type::VerboseLevel level, base::type::EnumType* pFlags) : m_level(level), m_pFlags(pFlags) {
 }
 
 /// @brief Sets verbose level. Accepted range is 0-9
@@ -2131,18 +2132,30 @@ static int priority(Level level) {
   return 7;
 }
 
+namespace
+{
+  std::atomic<int> s_lowest_priority{INT_MAX};
+}
+
+void VRegistry::clearCategories(void) {
+  const base::threading::ScopedLock scopedLock(lock());
+  m_categories.clear();
+  m_cached_allowed_categories.clear();
+  s_lowest_priority = INT_MAX;
+}
+
 void VRegistry::setCategories(const char* categories, bool clear) {
   base::threading::ScopedLock scopedLock(lock());
   auto insert = [&](std::stringstream& ss, Level level) {
     m_categories.push_back(std::make_pair(ss.str(), level));
     m_cached_allowed_categories.clear();
     int pri = priority(level);
-    if (pri > m_lowest_priority)
-      m_lowest_priority = pri;
+    if (pri > s_lowest_priority)
+      s_lowest_priority = pri;
   };
 
   if (clear) {
-    m_lowest_priority = 0;
+    s_lowest_priority = 0;
     m_categories.clear();
     m_cached_allowed_categories.clear();
     m_categoriesString.clear();
@@ -2200,9 +2213,9 @@ std::string VRegistry::getCategories() {
 }
 
 bool VRegistry::allowed(Level level, const std::string &category) {
-  const int pri = priority(level);
-  if (pri > m_lowest_priority)
-    return false;
+  return priority_allowed(priority(level), category);
+}
+bool VRegistry::priority_allowed(const int pri, const std::string &category) {
   base::threading::ScopedLock scopedLock(lock());
   const std::map<std::string, int>::const_iterator it = m_cached_allowed_categories.find(category);
   if (it != m_cached_allowed_categories.end())
@@ -3335,6 +3348,14 @@ void Helpers::logCrashReason(int sig, bool stackTraceIfAvailable, Level level, c
 
 // Loggers
 
+bool Loggers::allowed(Level level, const char* cat)
+{
+  const int pri = base::priority(level);
+  if (pri > base::s_lowest_priority)
+    return false;
+  return ELPP->vRegistry()->priority_allowed(pri, std::string{cat});
+}
+
 Logger* Loggers::getLogger(const std::string& identity, bool registerIfNotAvailable) {
   return ELPP->registeredLoggers()->get(identity, registerIfNotAvailable);
 }

external/easylogging++/easylogging++.h

@@ -412,7 +412,6 @@ ELPP_INTERNAL_DEBUGGING_OUT_INFO << ELPP_INTERNAL_DEBUGGING_MSG(internalInfoStre
 #include <sstream>
 #include <memory>
 #include <type_traits>
-#include <atomic>
 #if ELPP_THREADING_ENABLED
 #  if ELPP_USE_STD_THREADING
 #      include <mutex>
@@ -2464,12 +2463,7 @@ class VRegistry : base::NoCopy, public base::threading::ThreadSafe {
     return m_level;
   }
 
-  inline void clearCategories(void) {
-    base::threading::ScopedLock scopedLock(lock());
-    m_categories.clear();
-    m_cached_allowed_categories.clear();
-    m_lowest_priority = INT_MAX;
-  }
+  void clearCategories(void);
 
   inline void clearModules(void) {
     base::threading::ScopedLock scopedLock(lock());
@@ -2482,6 +2476,7 @@ class VRegistry : base::NoCopy, public base::threading::ThreadSafe {
 
   void setModules(const char* modules);
 
+  bool priority_allowed(int priority, const std::string &category);
   bool allowed(Level level, const std::string &category);
 
   bool allowed(base::type::VerboseLevel vlevel, const char* file);
@@ -2513,7 +2508,6 @@ class VRegistry : base::NoCopy, public base::threading::ThreadSafe {
   std::map<std::string, int> m_cached_allowed_categories;
   std::string m_categoriesString;
   std::string m_filenameCommonPrefix;
-  std::atomic<int> m_lowest_priority;
 };
 }  // namespace base
 class LogMessage {
@@ -3868,6 +3862,8 @@ class Helpers : base::StaticClass {
 /// @brief Static helpers to deal with loggers and their configurations
 class Loggers : base::StaticClass {
  public:
+  /// @brief Determines whether logging will occur at this level and category
+  static bool allowed(Level leve, const char* cat);
   /// @brief Gets existing or registers new logger
   static Logger* getLogger(const std::string& identity, bool registerIfNotAvailable = true);
   /// @brief Changes default log builder for future loggers