perf: 增加截面恢复路径的 Phase 0 计数器（Debug 探针）
按 pipe-section-region-performance-plan.md 的 Phase 0 落地。目的不是提速，而是先拿到
三个决定性数字，再判断截面缓存（Phase 1）到底值不值得做：
1) 每次截面恢复多贵（µs），一次开图共多少次；
2) 同一份 SAT 文本被重复恢复多少次（唯一 hash 数 / 模拟命中率）——直接决定缓存收益上限；
3) 临时文件写入次数与字节数（杀软扫描影响面），以及打开图纸时的回写次数。
改动：
- 新增 inc/SectionPerfCounter.h + CoreLibrary/SectionPerfCounter.cpp
- Scope（QPC 计时）+ NoteRegionText（FNV-1a 64 位 hash，统计唯一数与模拟命中）
+ NoteTempFile + NoteWriteBack + Dump/Reset
- 计数器实例放在函数内 static：CoreLibrary 是静态库且只被 CoreCommand 链接，
所以 CoreCommand.arx 里只有一份，两个入口共用
- AecDbEwPipeBase.cpp：RegionAcisInDwgInFields / RegionAcisoutDwgOutFields 接入
- CoreTools.cpp：StringToRegion 两个重载 / RegionToString 接入
- EarthWorm.cpp：注册 ENVIPERFDUMP / ENVIPERFRESET（仅 Debug）
- CoreLibrary/cmakelists.txt 加一个源文件
- 计划文档的 Phase 0 补上实际命令与采集项
开关：启动 CAD 前 set AEC_PERF_COUNTER=1；命令 ENVIPERFDUMP 打印并追加到
%TEMP%\aec_section_perf.txt，ENVIPERFRESET 清零。
Release 下 Enabled() 恒为 false，调用点只剩一次 bool 判断。
不改任何几何逻辑与存盘格式。
验证：R230 Debug 编译通过（CoreLibrary_BAL_REMOTE、CoreCommand_BAL_REMOTE，无新增 warning），
产物已自动部署到 c:\ShangHuaSoft\Envi3D-2026-M\R230\。
R190 未在本机编译（缺 v100 工具集）；代码刻意只用 C++98 特性，控制台输出改走 %hs，
避开了 &wstring[0] 这类老 STL 上的写法问题。
尚未做 CAD 实测：需要开图后跑 ENVIPERFDUMP 才看得到数据。
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#include "stdafx.h"
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#include "SectionPerfCounter.h"
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#include <windows.h>
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#include <stdlib.h>
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#include <string>
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#include <map>
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#include <set>
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namespace
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{
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// 单个计数器：次数 + 累计耗时（µs）
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struct Entry
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{
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Entry() : nCount(0), nTotalUs(0), nMaxUs(0) {}
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unsigned long long nCount;
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unsigned long long nTotalUs;
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unsigned long long nMaxUs;
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};
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// 唯一 hash 表的上限：正常图纸几十到几百个唯一截面，
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// 万一文本各不相同（说明缓存没意义）也不让内存无限涨
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const size_t kMaxUniqueHash = 50000;
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struct Stats
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{
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Stats()
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: bInited(false), bEnabled(false)
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, nRegionTexts(0), nUniqueHashes(0), nSimulatedHits(0), bHashTableOverflow(false)
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, nTempFiles(0), nTempFileBytes(0)
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, nWriteBacks(0)
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{
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}
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bool bInited;
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bool bEnabled;
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std::map<std::string, Entry> entries; // tag -> 次数/耗时
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unsigned long long nRegionTexts; // 一共恢复过多少份 SAT 文本
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size_t nUniqueHashes; // 其中不同内容有多少
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unsigned long long nSimulatedHits; // 若做内容缓存，能命中多少次
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bool bHashTableOverflow;
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std::set<unsigned long long> hashSeen;
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unsigned long long nTempFiles; // 临时文件写入次数
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unsigned long long nTempFileBytes; // 临时文件累计字节
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unsigned long long nWriteBacks; // Region -> SAT 文本 次数
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};
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// 故意用函数内 static：AGENTS.md 禁止文件级 static。
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// CoreLibrary 是静态库且只被 CoreCommand 链接，
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// 所以这里的实例在 CoreCommand.arx 里是唯一的一份。
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Stats& GetStats()
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{
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static Stats s_stats;
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if (!s_stats.bInited)
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{
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s_stats.bInited = true;
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#if defined(_DEBUG)
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const char* psz = ::getenv("AEC_PERF_COUNTER");
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s_stats.bEnabled = (psz != NULL && psz[0] != '\0' && psz[0] != '0');
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#else
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s_stats.bEnabled = false;
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#endif
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}
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return s_stats;
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}
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long long NowTicks()
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{
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LARGE_INTEGER li;
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::QueryPerformanceCounter(&li);
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return (long long)li.QuadPart;
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}
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unsigned long long TicksToUs(long long nTicks)
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{
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static long long nFreq = 0;
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if (nFreq == 0)
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{
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LARGE_INTEGER li;
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if (!::QueryPerformanceFrequency(&li) || li.QuadPart == 0)
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nFreq = 1;
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else
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nFreq = (long long)li.QuadPart;
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}
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if (nTicks <= 0)
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return 0;
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return (unsigned long long)((nTicks * 1000000LL) / nFreq);
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}
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// FNV-1a 64
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unsigned long long Hash64(const char* pszTxt, size_t nLen)
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{
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unsigned long long h = 1469598103934665603ULL;
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for (size_t i = 0; i < nLen; ++i)
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{
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h ^= (unsigned char)pszTxt[i];
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h *= 1099511628211ULL;
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}
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return h;
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}
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Entry& GetEntry(const char* pszTag)
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{
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Stats& s = GetStats();
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std::string key(pszTag ? pszTag : "?");
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return s.entries[key];
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}
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std::string TempReportPath()
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{
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char szTmp[MAX_PATH + 1];
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::memset(szTmp, 0, sizeof(szTmp));
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DWORD n = ::GetTempPathA(MAX_PATH, szTmp);
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if (n == 0 || n >= MAX_PATH)
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return std::string("aec_section_perf.txt");
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std::string s(szTmp);
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s += "aec_section_perf.txt";
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return s;
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}
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}
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namespace SectionPerf
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{
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bool Enabled()
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{
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return GetStats().bEnabled;
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}
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Scope::Scope(const char* pszTag)
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: m_pszTag(pszTag), m_nStart(0), m_bActive(false)
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{
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if (!GetStats().bEnabled)
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return;
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m_bActive = true;
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m_nStart = NowTicks();
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}
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Scope::~Scope()
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{
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if (!m_bActive)
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return;
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const unsigned long long nUs = TicksToUs(NowTicks() - m_nStart);
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Entry& e = GetEntry(m_pszTag);
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++e.nCount;
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e.nTotalUs += nUs;
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if (nUs > e.nMaxUs)
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e.nMaxUs = nUs;
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}
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void NoteRegionText(const char* pszTxt, size_t nLen)
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{
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Stats& s = GetStats();
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if (!s.bEnabled)
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return;
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if (pszTxt == NULL || nLen == 0)
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return;
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++s.nRegionTexts;
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const unsigned long long h = Hash64(pszTxt, nLen);
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if (s.hashSeen.find(h) != s.hashSeen.end())
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{
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++s.nSimulatedHits;
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return;
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}
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if (s.hashSeen.size() < kMaxUniqueHash)
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{
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s.hashSeen.insert(h);
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++s.nUniqueHashes;
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}
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else
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{
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s.bHashTableOverflow = true;
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}
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}
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void NoteTempFile(size_t nBytes)
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{
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Stats& s = GetStats();
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if (!s.bEnabled)
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return;
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++s.nTempFiles;
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s.nTempFileBytes += (unsigned long long)nBytes;
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}
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void NoteWriteBack(const char* pszTag)
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{
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Stats& s = GetStats();
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if (!s.bEnabled)
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return;
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++s.nWriteBacks;
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(void)pszTag;
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}
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void Dump()
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{
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Stats& s = GetStats();
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if (!s.bEnabled)
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{
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acutPrintf(_T("\n[SectionPerf] not enabled: set AEC_PERF_COUNTER=1 before starting CAD (Debug build only)."));
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return;
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}
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// 报告正文全 ASCII：控制台用 %hs 直出，落文件也直接可读
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std::string out;
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char szLine[1024];
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out += "\n================ SectionPerf (Phase 0) ================\n";
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sprintf_s(szLine, sizeof(szLine), "RegionTexts=%llu UniqueHashes=%llu SimulatedHits=%llu HitRate=%.1f%%\n",
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s.nRegionTexts, (unsigned long long)s.nUniqueHashes, s.nSimulatedHits,
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s.nRegionTexts ? (100.0 * (double)s.nSimulatedHits / (double)s.nRegionTexts) : 0.0);
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out += szLine;
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if (s.bHashTableOverflow)
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out += " (hash table capped: UniqueHashes is under-counted, HitRate over-estimated)\n";
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sprintf_s(szLine, sizeof(szLine), "TempFiles=%llu TempBytes=%llu WriteBacks=%llu\n",
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s.nTempFiles, s.nTempFileBytes, s.nWriteBacks);
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out += szLine;
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out += "---- timing (by tag) ----\n";
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out += " count total_ms avg_us max_us tag\n";
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for (std::map<std::string, Entry>::const_iterator it = s.entries.begin();
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it != s.entries.end(); ++it)
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{
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const Entry& e = it->second;
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const double avgUs = e.nCount ? ((double)e.nTotalUs / (double)e.nCount) : 0.0;
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sprintf_s(szLine, sizeof(szLine), " %-9llu %10.1f %10.1f %10llu %s\n",
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e.nCount, (double)e.nTotalUs / 1000.0, avgUs, e.nMaxUs, it->first.c_str());
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out += szLine;
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}
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out += "=======================================================\n";
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// 逐行输出：%hs 把窄字符串塞进 TCHAR 格式串，不涉及宽字符转换
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const char* psz = out.c_str();
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while (*psz != '\0')
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{
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const char* pszEnd = strchr(psz, '\n');
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const size_t nSeg = (pszEnd != NULL) ? (size_t)(pszEnd - psz) : strlen(psz);
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if (nSeg > 0 && nSeg < sizeof(szLine))
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{
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memcpy(szLine, psz, nSeg);
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szLine[nSeg] = '\0';
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acutPrintf(_T("\n%hs"), szLine);
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}
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if (pszEnd == NULL)
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break;
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psz = pszEnd + 1;
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}
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// 同时落文件，方便事后拿去做分析
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const std::string sPath = TempReportPath();
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FILE* fp = NULL;
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if (fopen_s(&fp, sPath.c_str(), "a") == 0 && fp != NULL)
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{
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fprintf(fp, "%s", out.c_str());
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fclose(fp);
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}
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}
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void Reset()
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{
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Stats& s = GetStats();
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s.entries.clear();
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s.hashSeen.clear();
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s.nRegionTexts = 0;
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s.nUniqueHashes = 0;
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s.nSimulatedHits = 0;
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s.bHashTableOverflow = false;
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s.nTempFiles = 0;
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s.nTempFileBytes = 0;
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s.nWriteBacks = 0;
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}
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}
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