improve crashlogs

2026-06-29 00:01:07 -05:00
parent 2c42a989cf
commit 5f598aa10b
9 changed files with 136 additions and 1 deletions
@@ -0,0 +1,46 @@
+//go:build windows
+
+package main
+
+import (
+	"fmt"
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+type exceptionRecord struct {
+	ExceptionCode        uint32
+	ExceptionFlags       uint32
+	ExceptionRecord      uintptr
+	ExceptionAddress     uintptr
+	NumberParameters     uint32
+	ExceptionInformation [15]uintptr
+}
+
+type exceptionPointers struct {
+	ExceptionRecord uintptr
+	ContextRecord   uintptr
+}
+
+var hardCrashCallback uintptr
+
+var procSetUnhandledExceptionFilter = windows.NewLazySystemDLL("kernel32.dll").NewProc("SetUnhandledExceptionFilter")
+
+func installHardCrashReporter() {
+	hardCrashCallback = syscall.NewCallback(func(info uintptr) uintptr {
+		detail := "unhandled native exception"
+		if info != 0 {
+			ptrs := (*exceptionPointers)(unsafe.Pointer(info))
+			if ptrs.ExceptionRecord != 0 {
+				rec := (*exceptionRecord)(unsafe.Pointer(ptrs.ExceptionRecord))
+				detail = fmt.Sprintf("exception=0x%08x address=0x%x flags=0x%x", rec.ExceptionCode, rec.ExceptionAddress, rec.ExceptionFlags)
+			}
+		}
+		path := writeCrashLog("hard crash: "+detail, nil)
+		writePendingCrashReport("crash", detail, path)
+		return 0
+	})
+	procSetUnhandledExceptionFilter.Call(hardCrashCallback)
+}