CPP-772 Remove per cpp file LOG_FILE attribute to speed up Windows build

Author: Michael Penick

cpp-driver/cmake/modules/CppDriver.cmake

@@ -987,12 +987,6 @@ macro(CassFindSourceFiles)
   endif()
 
   set(CASS_ALL_SOURCE_FILES ${CASS_SRC_FILES} ${CASS_API_HEADER_FILES} ${CASS_INC_FILES})
-
-  # Shorten the source file pathing for log messages
-  foreach(SRC_FILE ${CASS_SRC_FILES})
-    string(REPLACE "${CASS_ROOT_DIR}/" "" LOG_FILE_ ${SRC_FILE})
-    set_source_files_properties(${SRC_FILE} PROPERTIES COMPILE_FLAGS -DLOG_FILE_=\\\"${LOG_FILE_}\\\")
-  endforeach()
 endmacro()
 
 #------------------------

cpp-driver/src/logger.hpp

@@ -21,6 +21,7 @@
 #include "get_time.hpp"
 #include "string.hpp"
 
+#include <cstring>
 #include <stdarg.h>
 #include <stdio.h>
 
@@ -83,12 +84,19 @@ class Logger {
                    TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE,   \
                    TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, TWOORMORE, ONE, throwaway)
 
-// Using __FILE__ returns the whole absolute path of the file, this
-// allows something more concise to be used via -DLOG_FILE_=<path>
-#ifndef LOG_FILE_
-#define LOG_FILE_ __FILE__
+#ifdef WIN32
+#define LOG_FILE_SEPARATOR_STR_ "\\"
+#define LOG_FILE_SEPARATOR_CHAR_ '\\'
+#else
+#define LOG_FILE_SEPARATOR_STR_ "/"
+#define LOG_FILE_SEPARATOR_CHAR_ '/'
 #endif
 
+// Compiles away on most compilers (not MSVC, but it's still fast). This adds the seperator to the
+// front to guarantee a match is found, but it's then removed by moving the pointer to the next
+// position.
+#define LOG_FILE_ (strrchr(LOG_FILE_SEPARATOR_STR_ __FILE__, LOG_FILE_SEPARATOR_CHAR_) + 1)
+
 #if defined(_MSC_VER)
 #define LOG_FUNCTION_ __FUNCSIG__
 #elif defined(__clang__) || defined(__GNUC__) || defined(__INTEL_COMPILER)