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| author | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-07-06 21:44:54 +0200 |
|---|---|---|
| committer | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2013-07-06 21:44:54 +0200 |
| commit | 567df6aacfe4c35a979c178b8c7ffd7c19037a4f (patch) | |
| tree | c4eaaeca42e34e67dcc42e0c3b2c6906fb46d912 /Tools/MemDumpAnalysis/MemDumpAnalysis.cpp | |
| parent | BiomeVisualiser: Moved into the Tools folder (diff) | |
| download | cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar.gz cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar.bz2 cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar.lz cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar.xz cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.tar.zst cuberite-567df6aacfe4c35a979c178b8c7ffd7c19037a4f.zip | |
Diffstat (limited to 'Tools/MemDumpAnalysis/MemDumpAnalysis.cpp')
| -rw-r--r-- | Tools/MemDumpAnalysis/MemDumpAnalysis.cpp | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/Tools/MemDumpAnalysis/MemDumpAnalysis.cpp b/Tools/MemDumpAnalysis/MemDumpAnalysis.cpp new file mode 100644 index 000000000..9e7759085 --- /dev/null +++ b/Tools/MemDumpAnalysis/MemDumpAnalysis.cpp @@ -0,0 +1,321 @@ +
+// MemDumpAnalysis.cpp
+
+// Defines the entry point for the console application.
+
+#include "Globals.h"
+
+#ifdef _WIN32
+ #pragma comment(lib, "ws2_32.lib") // Needed for StringUtils' RawBEToUtf8() et al.
+#endif // _WIN32
+
+
+
+
+
+typedef std::set<AString> AStringSet;
+
+
+
+
+
+class cFunction
+{
+public:
+ int m_Size; ///< Sum of memory block sizes allocated by this function or its children
+ int m_Count; ///< Total number of memory blocks allocated by this function or its children
+ AStringSet m_ChildrenNames;
+
+ cFunction(void) :
+ m_Size(0),
+ m_Count(0)
+ {
+ }
+} ;
+
+typedef std::map<AString, cFunction> FunctionMap;
+
+
+
+
+
+int g_CurrentID = 0;
+int g_CurrentSize = 0;
+FunctionMap g_FnMap;
+AString g_PrevFunctionName;
+
+
+
+
+
+bool IsFnBlackListed(const char * a_FnName)
+{
+ static const char * BlackList[] =
+ {
+ "MyAllocHook",
+ "_heap_alloc_dbg_impl",
+ "_nh_malloc_dbg_impl",
+ "_nh_malloc_dbg",
+ "malloc",
+ "operator new",
+ "_malloc_dbg",
+ "realloc_help",
+ "_realloc_dbg",
+ "realloc",
+ "l_alloc",
+ "luaM_realloc_",
+ "",
+ } ;
+
+ for (int i = 0; i < ARRAYCOUNT(BlackList); i++)
+ {
+ if (strcmp(BlackList[i], a_FnName) == 0)
+ {
+ return true;
+ }
+ }
+ return false;
+}
+
+
+
+
+
+const char * FindAttr(const char ** a_Attrs, const char * a_AttrName)
+{
+ for (const char ** Attr = a_Attrs; *Attr != NULL; Attr += 2)
+ {
+ if (strcmp(*Attr, a_AttrName) == 0)
+ {
+ return *(Attr + 1);
+ }
+ } // for Attr - a_Attrs[]
+ return NULL;
+}
+
+
+
+
+
+void OnStartElement(void * a_Data, const char * a_Element, const char ** a_Attrs)
+{
+ if (strcmp(a_Element, "LEAK") == 0)
+ {
+ const char * attrID = FindAttr(a_Attrs, "requestID");
+ const char * attrSize = FindAttr(a_Attrs, "size");
+ g_CurrentID = atoi((attrID == NULL) ? "-1" : attrID);
+ g_CurrentSize = atoi((attrSize == NULL) ? "-1" : attrSize);
+ g_PrevFunctionName.clear();
+ return;
+ }
+ if (strcmp(a_Element, "STACKENTRY") == 0)
+ {
+ const char * fnName = FindAttr(a_Attrs, "decl");
+ if (fnName == NULL)
+ {
+ g_CurrentID = -1;
+ g_CurrentSize = -1;
+ return;
+ }
+ if (g_CurrentSize < 0)
+ {
+ return;
+ }
+ if (IsFnBlackListed(fnName))
+ {
+ return;
+ }
+ AString FunctionName = fnName;
+ cFunction & Function = g_FnMap[FunctionName];
+ Function.m_Size += g_CurrentSize;
+ Function.m_Count += 1;
+ if (!g_PrevFunctionName.empty())
+ {
+ Function.m_ChildrenNames.insert(g_PrevFunctionName);
+ }
+ std::swap(g_PrevFunctionName, FunctionName); // We only care about moving FunctionName into g_PrevFunctionName
+ return;
+ }
+}
+
+
+
+
+
+void OnEndElement(void * a_Data, const char * a_Element)
+{
+ if (strcmp(a_Element, "LEAK") == 0)
+ {
+ g_CurrentID = -1;
+ g_CurrentSize = -1;
+ return;
+ }
+}
+
+
+
+
+
+bool CompareFnInt(const std::pair<AString, int> & a_First, const std::pair<AString, int> & a_Second)
+{
+ return (a_First.second < a_Second.second);
+}
+
+
+
+
+
+void WriteSizeStatistics(void)
+{
+ typedef std::vector<std::pair<AString, int> > StringIntPairs;
+ StringIntPairs FnSizes;
+
+ cFile f("memdump_totals.txt", cFile::fmWrite);
+ if (!f.IsOpen())
+ {
+ LOGERROR("Cannot open memdump_totals.txt");
+ return;
+ }
+
+ for (FunctionMap::iterator itr = g_FnMap.begin(), end = g_FnMap.end(); itr != end; ++itr)
+ {
+ FnSizes.push_back(std::pair<AString, int>(itr->first, itr->second.m_Size));
+ } // for itr - g_FnSizes[]
+ std::sort(FnSizes.begin(), FnSizes.end(), CompareFnInt);
+
+ for (StringIntPairs::const_iterator itr = FnSizes.begin(), end = FnSizes.end(); itr != end; ++itr)
+ {
+ f.Printf("%d\t%s\n", itr->second, itr->first.c_str());
+ } // for itr - FnSizes[]
+}
+
+
+
+
+
+void WriteCountStatistics(void)
+{
+ typedef std::vector<std::pair<AString, int> > StringIntPairs;
+ StringIntPairs FnCounts;
+
+ cFile f("memdump_counts.txt", cFile::fmWrite);
+ if (!f.IsOpen())
+ {
+ LOGERROR("Cannot open memdump_counts.txt");
+ return;
+ }
+
+ for (FunctionMap::iterator itr = g_FnMap.begin(), end = g_FnMap.end(); itr != end; ++itr)
+ {
+ FnCounts.push_back(std::pair<AString, int>(itr->first, itr->second.m_Count));
+ } // for itr - g_FnSizes[]
+ std::sort(FnCounts.begin(), FnCounts.end(), CompareFnInt);
+
+ for (StringIntPairs::const_iterator itr = FnCounts.begin(), end = FnCounts.end(); itr != end; ++itr)
+ {
+ f.Printf("%d\t%s\n", itr->second, itr->first.c_str());
+ } // for itr - FnSizes[]
+}
+
+
+
+
+
+AString HTMLEscape(const AString & a_Text)
+{
+ AString res;
+ res.reserve(a_Text.size());
+ size_t len = a_Text.length();
+ for (size_t i = 0; i < len; i++)
+ {
+ switch (a_Text[i])
+ {
+ case '<': res.append("<<BR/>"); break;
+ case '>': res.append("<BR/>>"); break;
+ case '&': res.append("&"); break;
+ default:
+ {
+ res.push_back(a_Text[i]);
+ }
+ }
+ } // for i - a_Text[]
+ return res;
+}
+
+
+
+
+
+void WriteDotGraph(void)
+{
+ cFile f("memdump.dot", cFile::fmWrite);
+ if (!f.IsOpen())
+ {
+ LOGERROR("Cannot open memdump.dot");
+ return;
+ }
+
+ f.Printf("digraph {\n\tnode [shape=plaintext]\n\n");
+ for (FunctionMap::const_iterator itrF = g_FnMap.begin(), endF = g_FnMap.end(); itrF != endF; ++itrF)
+ {
+ f.Printf("\t\"%s\" [label=<%s<BR/>%d bytes (%d KiB)<BR/>%d blocks>]\n",
+ itrF->first.c_str(),
+ HTMLEscape(itrF->first).c_str(),
+ itrF->second.m_Size,
+ (itrF->second.m_Size + 1023) / 1024,
+ itrF->second.m_Count
+ );
+ const AStringSet & Children = itrF->second.m_ChildrenNames;
+ for (AStringSet::const_iterator itrN = Children.begin(), endN = Children.end(); itrN != endN; ++itrN)
+ {
+ f.Printf("\t\t\"%s\" -> \"%s\"\n", itrF->first.c_str(), itrN->c_str());
+ }
+ f.Printf("\n");
+ } // for itr
+ f.Printf("}\n");
+}
+
+
+
+
+
+int main(int argc, char * argv[])
+{
+ // Open the dump file:
+ cFile f("memdump.xml", cFile::fmRead);
+ if (!f.IsOpen())
+ {
+ printf("Cannot open memdump.xml\n");
+ return 1;
+ }
+
+ // Create the XML parser:
+ XML_Parser Parser = XML_ParserCreate(NULL);
+ XML_SetElementHandler(Parser, OnStartElement, OnEndElement);
+
+ // Feed the file through XML parser:
+ char Buffer[512 KiB];
+ while (true)
+ {
+ int NumBytes = f.Read(Buffer, sizeof(Buffer));
+ if (NumBytes <= 0)
+ {
+ break;
+ }
+ XML_Parse(Parser, Buffer, NumBytes, false);
+ putc('.', stdout);
+ }
+ XML_Parse(Parser, "", 0, true);
+ f.Close();
+
+ // Output the statistics
+ WriteSizeStatistics();
+ WriteCountStatistics();
+ WriteDotGraph();
+
+ return 0;
+}
+
+
+
+
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