fix: v0.4.3 修复长会话越跑越卡/命令无响应——日志手工 cursor 裁剪在 PySide6 6.11 必抛异常且打断 _poll_dlpc 消费；改 setMaximumBlockCount(500) 环形裁剪+逐事件兜底；新增 selftest_log 回归；重打包

DLPilot/src/app_fluent.py

@@ -13,6 +13,7 @@ import queue
 import re
 import sys
 import time
+import traceback
 
 # PyInstaller keeps Shiboken's ABI DLLs in a sibling directory.  Register both
 # Qt and Shiboken before importing QtCore; this is required by one-file builds
@@ -63,7 +64,7 @@ import edid_parse
 import patterns
 
 APP_NAME = "DLPilot"
-APP_VERSION = "0.4.2"
+APP_VERSION = "0.4.3"
 REPO_URL = "https://gitea.hulk.wang/hulk/HW-Debug-Tools"
 MONO = QFont("Consolas", 10)
 CHIP_IDLE = "#666666"
@@ -440,6 +441,10 @@ class App(QMainWindow):
                                 trailing=self._button("清空", self._dlpc_clear))
         self.txt_dlpc = self._text()
         self.txt_dlpc.setMinimumHeight(230)
+        # 收发日志环形裁剪: 超 500 行自动丢最旧(O(1))。勿改回 textCursor 手工裁剪——
+        # PySide6 6.11 移除实例级枚举访问, cursor.Start 必抛 AttributeError 且异常会
+        # 打断 _poll_dlpc 的队列消费(事件棘轮积压), 回归见 selftest_log.py
+        self.txt_dlpc.document().setMaximumBlockCount(500)
         body.addWidget(self.txt_dlpc)
         self._dlpc_log("帧格式: D5 01 LEN <命令> CRC / B5 TYPE LEN <payload> CRC")
         layout.addWidget(card)
@@ -755,9 +760,12 @@ class App(QMainWindow):
     def _query_lamp(self): self._tl_order.append('LAMP'); self._dlpc_send('M202')
 
     def _poll_dlpc(self):
-        try:
-            while True:
+        while True:
+            try:
                 kind, value = self._dlpc_log_q.get_nowait()
+            except queue.Empty:
+                break
+            try:
                 if kind == 'status':
                     self.lbl_dlpc_st.setText(value)
                     if value.startswith(('已断开', '串口丢失')): self._serial_reset_state()
@@ -766,15 +774,16 @@ class App(QMainWindow):
                 elif kind == 'pdframe': self._pd_step_done(value.type_code == 0xF0, value)
                 elif kind == 'pwrframe': self._pwr_step_done(value)
                 else: self._dlpc_log(value)
-        except queue.Empty: pass
+            except Exception:
+                # 单条事件处理异常只打栈放弃该条, 不得中断本轮消费——否则积压随事件流
+                # 单调增长(v0.4.3 前日志裁剪异常即此路径, 显示延迟越跑越大)
+                traceback.print_exc()
         connected = self.dlpc.is_connected()
         if connected != self._dlpc_connected:
             self._dlpc_connected = connected; self.btn_dlpc.setText("断开" if connected else "连接")
 
     def _dlpc_log(self, line):
         self.txt_dlpc.appendPlainText(time.strftime('%H:%M:%S  ') + line)
-        if self.txt_dlpc.blockCount() > 500:
-            cursor = self.txt_dlpc.textCursor(); cursor.movePosition(cursor.Start); cursor.select(cursor.BlockUnderCursor); cursor.removeSelectedText(); cursor.deleteChar()
         self.txt_dlpc.verticalScrollBar().setValue(self.txt_dlpc.verticalScrollBar().maximum())
 
     def _dlpc_clear(self): self.txt_dlpc.clear()

DLPilot/src/selftest_log.py

@@ -0,0 +1,70 @@
+# coding: utf-8
+"""收发日志上限与队列消费回归自检（无窗口, 离屏渲染）。
+
+背景: v0.4.3 之前收发日志用 textCursor 手工裁剪, 其中 `cursor.Start` /
+`cursor.BlockUnderCursor` 是实例级枚举访问 —— PySide6 6.11 移除了该形式,
+日志一旦超过 500 行, 每次 _dlpc_log 追加后必抛 AttributeError; 且异常会
+逃出 _poll_dlpc 的 drain 循环（旧 try 只捕获 queue.Empty）, 每 tick 最多
+消费到第一条 event, `_dlpc_log_q` 棘轮积压、日志裁剪与自动滚动全部失效,
+电源自检/功率检测序列还会被异常打断在启动处（之后所有命令被"序列进行中"
+拦截）。v0.4.3 改为 setMaximumBlockCount 环形裁剪 + 逐事件异常兜底。
+
+本测试保证:
+  1. 连续追加 600 行日志不抛异常, document().blockCount() 环形封顶 500, 末行在;
+  2. 单条异常事件（模拟未来引入的坏数据）不中断 _poll_dlpc 本轮队列消费
+     —— 其后的事件仍全部入日志、队列清空。
+
+运行: python selftest_log.py  （依赖 PySide6-Fluent-Widgets 与 pyserial ——
+串口卡构建后 txt_dlpc 才存在）
+"""
+import os
+import sys
+
+os.environ.setdefault("QT_QPA_PLATFORM", "offscreen")
+sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
+
+from PySide6.QtWidgets import QApplication
+from qfluentwidgets import Theme, setTheme
+
+import app_fluent
+import dlpc_rs485
+
+
+def check_cap(win):
+    for i in range(600):
+        win._dlpc_log(f"cap-line-{i}")
+    blocks = win.txt_dlpc.document().blockCount()
+    has_last = "cap-line-599" in win.txt_dlpc.toPlainText()
+    print(f"  追加 600 行: blockCount={blocks}(封顶 500), 末行在: {has_last}")
+    return blocks <= 500 and has_last
+
+
+def check_drain_resilience(win):
+    win._timer.stop()                                  # 排除 80ms 轮询定时器干扰
+    win._dlpc_log_q.put(("pdframe", "poison-not-a-frame"))   # 该条分发必抛异常
+    win._dlpc_log_q.put(("event", "after-poison-1"))
+    win._dlpc_log_q.put(("event", "after-poison-2"))
+    win._poll_dlpc()                                   # 单次手动驱动(不进事件循环)
+    left = win._dlpc_log_q.qsize()
+    text = win.txt_dlpc.toPlainText()
+    drained = left == 0 and "after-poison-1" in text and "after-poison-2" in text
+    print(f"  坏条目后消费不中断: 残留队列={left}, 后续事件全部写入: {drained}")
+    return drained
+
+
+def main():
+    if not dlpc_rs485.HAS_SERIAL:
+        print("FAILED 缺少 pyserial: 串口卡未构建, txt_dlpc 不存在")
+        return 1
+    app = QApplication.instance() or QApplication(sys.argv)
+    setTheme(Theme.AUTO)
+    win = app_fluent.App(0)
+    passed = check_cap(win)
+    passed &= check_drain_resilience(win)
+    win.close()
+    print("ALL PASS" if passed else "FAILED")
+    return 0 if passed else 1
+
+
+if __name__ == "__main__":
+    sys.exit(main())