2 files changed, 67 insertions, 0 deletions
diff --git a/profile/go.mod b/profile/go.mod
new file mode 100644
index 0000000..3fcd33c
--- /dev/null
+++ b/profile/go.mod
@@ -0,0 +1,3 @@
+module go.jknobloc.com/x/profile
+
+go 1.25
diff --git a/profile/profile.go b/profile/profile.go
new file mode 100644
index 0000000..5654ba1
--- /dev/null
+++ b/profile/profile.go
@@ -0,0 +1,64 @@
+package profile
+
+import (
+	"flag"
+	"log"
+	"os"
+	"runtime"
+	"runtime/pprof"
+)
+
+var cpuprofile = flag.String("cpuprofile", "", "write cpu profile to `file`")
+var memprofile = flag.String("memprofile", "", "write memory profile to `file`")
+
+func CPU() func() {
+	flag.Parse()
+
+	if *cpuprofile == "" {
+		return nil
+	}
+
+	var file *os.File
+
+	if f, err := os.Create(*cpuprofile); err != nil {
+		log.Fatal("could not create CPU profile: ", err)
+	} else {
+		file = f
+	}
+
+	if err := pprof.StartCPUProfile(file); err != nil {
+		log.Fatal("could not start CPU profile: ", err)
+	}
+
+	return func() {
+		pprof.StopCPUProfile()
+
+		if err := file.Close(); err != nil {
+			log.Fatal(err)
+		}
+	}
+}
+
+func Mem() {
+	flag.Parse()
+
+	if *memprofile == "" {
+		return
+	}
+
+	var file *os.File
+
+	if f, err := os.Create(*memprofile); err != nil {
+		log.Fatal("could not create memory profile: ", err)
+	} else {
+		file = f
+
+		defer file.Close()
+	}
+
+	runtime.GC()
+
+	if err := pprof.Lookup("allocs").WriteTo(file, 0); err != nil {
+		log.Fatal("could not write memory profile: ", err)
+	}
+}