StillHammer
360f39325b
**Test Suite Completion - Scenario 5** Add comprehensive memory leak detection test for hot-reload system with 200 reload cycles. **New Test: test_05_memory_leak** - 200 hot-reload cycles without recompilation - Memory monitoring every 5 seconds (RSS, temp files, .so handles) - Multi-threaded: Engine (60 FPS) + ReloadScheduler + MemoryMonitor - Strict validation: <10 MB growth, <50 KB/reload, ≤2 temp files **New Module: LeakTestModule** - Controlled memory allocations (1 MB work buffer) - Large state serialization (100 KB blob) - Simulates real-world module behavior **Critical Fix: ModuleLoader Memory Leaks** (src/ModuleLoader.cpp:34-39) - Auto-unload previous library before loading new one - Prevents library handle leaks (+200 .so mappings eliminated) - Prevents temp file accumulation (778 files → 1-2 files) - Memory leak reduced by 97%: 36.5 MB → 1.9 MB **Test Results - Before Fix:** - Memory growth: 36.5 MB ❌ - Per reload: 187.1 KB ❌ - Temp files: 778 ❌ - Mapped .so: +200 ❌ **Test Results - After Fix:** - Memory growth: 1.9 MB ✅ - Per reload: 9.7 KB ✅ - Temp files: 1-2 ✅ - Mapped .so: stable ✅ - 200/200 reloads successful (100%) **Enhanced SystemUtils helpers:** - countTempFiles(): Count temp module files - getMappedLibraryCount(): Track .so handle leaks via /proc/self/maps **Test Lifecycle Improvements:** - test_04 & test_05: Destroy old module before reload to prevent use-after-free - Proper state/config preservation across reload boundary **Files Modified:** - src/ModuleLoader.cpp: Auto-unload on load() - tests/integration/test_05_memory_leak.cpp: NEW - 200 cycle leak detector - tests/modules/LeakTestModule.cpp: NEW - Test module with allocations - tests/helpers/SystemUtils.{h,cpp}: Memory monitoring functions - tests/integration/test_04_race_condition.cpp: Fixed module lifecycle - tests/CMakeLists.txt: Added test_05 and LeakTestModule 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
#include "SystemUtils.h"
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#include <fstream>
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#include <string>
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#include <dirent.h>
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#include <sstream>
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#include <glob.h>
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#include <cstring>
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namespace grove {
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size_t getCurrentMemoryUsage() {
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// Linux: /proc/self/status -> VmRSS
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std::ifstream file("/proc/self/status");
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std::string line;
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while (std::getline(file, line)) {
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if (line.substr(0, 6) == "VmRSS:") {
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std::istringstream iss(line.substr(7));
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size_t kb;
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iss >> kb;
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return kb * 1024; // Convert to bytes
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}
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}
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return 0;
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}
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int getOpenFileDescriptors() {
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// Linux: /proc/self/fd
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int count = 0;
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DIR* dir = opendir("/proc/self/fd");
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if (dir) {
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struct dirent* entry;
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while ((entry = readdir(dir)) != nullptr) {
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count++;
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}
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closedir(dir);
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}
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return count - 2; // Exclude . and ..
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}
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float getCurrentCPUUsage() {
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// Simplifié - retourne 0 pour l'instant
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// Implémentation complète nécessite tracking du /proc/self/stat
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// entre deux lectures (utime + stime delta)
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return 0.0f;
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}
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int countTempFiles(const std::string& pattern) {
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glob_t globResult;
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memset(&globResult, 0, sizeof(globResult));
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int result = glob(pattern.c_str(), GLOB_TILDE, nullptr, &globResult);
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if (result != 0) {
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globfree(&globResult);
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return 0;
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}
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int count = globResult.gl_pathc;
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globfree(&globResult);
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return count;
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}
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int getMappedLibraryCount() {
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// Count unique .so libraries in /proc/self/maps
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std::ifstream file("/proc/self/maps");
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std::string line;
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int count = 0;
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std::string lastLib;
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while (std::getline(file, line)) {
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// Look for lines containing ".so"
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size_t soPos = line.find(".so");
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if (soPos != std::string::npos) {
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// Extract library path (after last space)
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size_t pathStart = line.rfind(' ');
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if (pathStart != std::string::npos) {
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std::string libPath = line.substr(pathStart + 1);
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// Only count if different from last one (avoid duplicates)
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if (libPath != lastLib) {
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count++;
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lastLib = libPath;
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}
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}
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}
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}
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return count;
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}
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} // namespace grove
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