Initial commit

.gitignore

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+*.a
+*.o
+*.so

Makefile

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+FIRE_CXX ?= clang++
+FIRE_CXXFLAGS ?= -O3 -std=gnu++2a -Wall -Werror -Wextra -fPIE -fPIC -fstack-protector-strong -fsanitize=safe-stack -fsanitize=safe-stack
+FIRE_LDFLAGS ?= -fuse-ld=gold -flto -Wl,-z,relro -Wl,-z,now
+FIRE_LDLIBS ?= -lglog
+
+all: fireusage.a fireusage.o fireusage.so
+
+objects = usage.o
+
+fireusage.a: $(objects)
+	ar rcs $@ $^
+
+fireusage.o: $(objects)
+	gold -z relro -z now -r --output=$@ $+
+
+fireusage.so: $(objects)
+	$(FIRE_CXX) $(FIRE_CXXFLAGS) $(FIRE_LDFLAGS) -shared -o $@ $+ $(FIRE_LDFLIBS)
+
+%.o: %.cc *.h Makefile
+	$(FIRE_CXX) $(FIRE_CXXFLAGS) -c -o $@ $<
+
+clean:
+	rm --force *.so *.o *.a
+
+asan:
+	$(MAKE) clean
+	FIRE_CXXFLAGS="-O1 -g -fsanitize=address -fno-omit-frame-pointer -std=gnu++2a -fPIE -fPIC" $(MAKE) all
+
+tsan:
+	$(MAKE) clean
+	FIRE_CXXFLAGS="-O1 -g -fsanitize=thread -std=gnu++2a -fPIE -fPIC" $(MAKE) all
+
+ubsan:
+	$(MAKE) clean
+	FIRE_CXXFLAGS="-O1 -g -fsanitize=undefined -std=gnu++2a -fPIE -fPIC" $(MAKE) all

usage.cc

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+#include "usage.h"
+
+namespace fireusage {
+
+UsageTracker::UsageTracker(const std::string_view& plural_resource_name)
+	: plural_resource_name_(plural_resource_name) {
+}
+
+} // namespace fireusage

usage.h

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+#pragma once
+
+#include <string>
+
+namespace fireusage {
+
+class UsageTracker {
+  public:
+	UsageTracker(const std::string_view& plural_resource_name);
+
+  private:
+	const std::string plural_resource_name_;
+};
+
+} // namespace fireusage