Log by line compilation option

Signed-off-by: swurl <swurl@swurl.xyz>

.ci/linux.sh

@@ -49,6 +49,7 @@ cmake .. -G Ninja \
     -DYUZU_USE_BUNDLED_VCPKG=OFF \
     -DYUZU_USE_BUNDLED_QT=OFF \
     -DUSE_SYSTEM_QT=ON \
+    -DYUZU_LOG_BY_LINE=ON \
     -DYUZU_USE_BUNDLED_FFMPEG=OFF \
     -DYUZU_USE_BUNDLED_SDL2=OFF \
     -DYUZU_USE_EXTERNAL_SDL2=ON \

CMakeLists.txt

@@ -73,6 +73,8 @@ option(YUZU_ENABLE_LTO "Enable link-time optimization" OFF)
 
 option(YUZU_DOWNLOAD_TIME_ZONE_DATA "Always download time zone binaries" OFF)
 
+option(YUZU_LOG_BY_LINE "Flush log data by the line rather than 4KB buffers" OFF)
+
 option(YUZU_ENABLE_PORTABLE "Allow yuzu to enable portable mode if a user folder is found in the CWD" ON)
 
 CMAKE_DEPENDENT_OPTION(YUZU_USE_FASTER_LD "Check if a faster linker is available" ON "NOT WIN32" OFF)
@@ -285,6 +287,11 @@ if (ARCHITECTURE_arm64 AND (ANDROID OR ${CMAKE_SYSTEM_NAME} STREQUAL "Linux"))
     add_definitions(-DHAS_NCE=1)
 endif()
 
+if (YUZU_LOG_BY_LINE)
+    add_definitions(-DYUZU_LOG_BY_LINE=1)
+endif()
+
+
 # Configure C++ standard
 # ===========================
 

src/common/logging/backend.cpp

@@ -106,6 +106,11 @@ public:
 
         bytes_written += file->WriteString(FormatLogMessage(entry).append(1, '\n'));
 
+        // Option to log each line rather than 4k buffers
+#ifdef YUZU_LOG_BY_LINE
+        file->Flush();
+#endif
+
         using namespace Common::Literals;
         // Prevent logs from exceeding a set maximum size in the event that log entries are spammed.
         const auto write_limit = Settings::values.extended_logging.GetValue() ? 1_GiB : 100_MiB;