New logging system

src/common/logging/text_formatter.cpp

@@ -0,0 +1,47 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <array>
+#include <cstdio>
+
+#include "common/logging/backend.h"
+#include "common/logging/log.h"
+#include "common/logging/text_formatter.h"
+
+namespace Log {
+
+void FormatLogMessage(const Entry& entry, char* out_text, size_t text_len) {
+    unsigned int time_seconds    = static_cast<unsigned int>(entry.timestamp.count() / 1000000);
+    unsigned int time_fractional = static_cast<unsigned int>(entry.timestamp.count() % 1000000);
+
+    const char* class_name = Logger::GetLogClassName(entry.log_class);
+    const char* level_name = Logger::GetLevelName(entry.log_level);
+
+    snprintf(out_text, text_len, "[%4u.%06u] %s <%s> %s: %s",
+        time_seconds, time_fractional, class_name, level_name,
+        entry.location.c_str(), entry.message.c_str());
+}
+
+void PrintMessage(const Entry& entry) {
+    std::array<char, 4 * 1024> format_buffer;
+    FormatLogMessage(entry, format_buffer.data(), format_buffer.size());
+    fputs(format_buffer.data(), stderr);
+    fputc('\n', stderr);
+}
+
+void TextLoggingLoop(std::shared_ptr<Logger> logger) {
+    std::array<Entry, 256> entry_buffer;
+
+    while (true) {
+        size_t num_entries = logger->GetEntries(entry_buffer.data(), entry_buffer.size());
+        if (num_entries == Logger::QUEUE_CLOSED) {
+            break;
+        }
+        for (size_t i = 0; i < num_entries; ++i) {
+            PrintMessage(entry_buffer[i]);
+        }
+    }
+}
+
+}