somewhat is starting to work

1 files changed, 70 insertions, 0 deletions

diff --git a/run.go b/run.go
new file mode 100644
index 0000000..2dcb53b
--- /dev/null
+++ b/run.go
@@ -0,0 +1,70 @@
+package main
+
+import (
+	"errors"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"go.wit.com/lib/gui/shell"
+	"go.wit.com/log"
+)
+
+func purgeGoCaches() {
+	homedir, err := os.UserHomeDir()
+	if err != nil {
+		badExit(err)
+	}
+	pkgdir := filepath.Join(homedir, "go/pkg")
+	var cmd []string
+	cmd = []string{"chmod", "700", "-R", pkgdir}
+	runStrict("", cmd)
+	cmd = []string{"rm", "-rf", pkgdir}
+	runStrict("", cmd)
+	builddir := filepath.Join(homedir, ".cache/go-build")
+	cmd = []string{"rm", "-rf", builddir}
+	runStrict("", cmd)
+
+	// this can't have really happened
+	// echo this still failed in:
+	// echo "Linux hpdev2.grid.wit.com 6.9.8-rt-amd64 #1 SMP PREEMPT_RT Debian 6.9.8-1 (2024-07-07) x86_64 GNU/Linux"
+	// echo and I had to drop the caches after building go install binaries quickly and running them
+	// echo "as an os.Exec() between binaries"
+	// echo sysctl -w vm.drop_caches=3
+}
+
+func runStrict(wd string, cmd []string) {
+	var err error
+	if wd != "" {
+		if err = os.Chdir(wd); err != nil {
+			log.Info("cd", "wd", "failed", err)
+			badExit(err)
+		}
+	}
+	log.Info(wd, "running:", wd, cmd)
+	// result := shell.Run(cmd)
+	result := shell.RunRealtime(cmd)
+	if result.Error != nil {
+		log.Info("cmd failed", wd, cmd, err)
+		for i, line := range result.Stdout {
+			log.Info("STDOUT:", i, line)
+		}
+		for i, line := range result.Stderr {
+			log.Info("STDERR:", i, line)
+		}
+		badExit(err)
+	}
+	if result.Exit != 0 {
+		log.Info("cmd failed", wd, cmd, err)
+		for i, line := range result.Stdout {
+			log.Info("STDOUT:", i, line)
+		}
+		for i, line := range result.Stderr {
+			log.Info("STDERR:", i, line)
+		}
+		badExit(errors.New(fmt.Sprintf("cmd failed with %d", result.Exit)))
+	}
+	for i, line := range result.Stdout {
+		log.Info(i, line)
+	}
+}