mirror of
https://github.com/SoftEtherVPN/SoftEtherVPN.git
synced 2024-11-07 02:00:41 +03:00
868 lines
14 KiB
C
868 lines
14 KiB
C
// SoftEther VPN Source Code - Developer Edition Master Branch
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// Mayaqua Kernel
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// Tracking.c
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// Object tracking module
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#include "Tracking.h"
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#include "Mayaqua.h"
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#include "Memory.h"
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#include "OS.h"
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#include "Str.h"
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// Global variables
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static LOCK *obj_lock;
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static LOCK *obj_id_lock;
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static UINT obj_id;
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static LOCK *cs_lock;
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static TRACKING_LIST **hashlist;
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static bool do_not_get_callstack;
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// Get whether the tracking is enabled
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bool IsTrackingEnabled()
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{
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return (IsDebug() || IsMemCheck()) && kernel_status_inited;
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}
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// Memory debug menu
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void MemoryDebugMenu()
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{
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char tmp[MAX_SIZE];
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TOKEN_LIST *t;
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char *cmd;
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Print("Mayaqua Kernel Memory Debug Tools\n"
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"Copyright (c) SoftEther VPN Project. All Rights Reserved.\n\n");
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#ifndef OS_WIN32
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Print("Unfortunately The call stack is not recorded on non-Windows systems\n");
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Print("since UnixGetCallStack() and UnixGetCallStackSymbolInfo() is not implemented.\n");
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Print("Therefore please use valgrind or other memory leak check tools\n");
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Print("to get the actual call stacks of memory leak causes.\n\n");
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#endif // OS_WIN32
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g_memcheck = false;
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while (true)
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{
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Print("debug>");
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GetLine(tmp, sizeof(tmp));
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t = ParseToken(tmp, " \t");
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if (t->NumTokens == 0)
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{
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FreeToken(t);
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DebugPrintAllObjects();
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continue;
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}
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cmd = t->Token[0];
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if (!StrCmpi(cmd, "?"))
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{
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DebugPrintCommandList();
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}
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else if (!StrCmpi(cmd, "a"))
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{
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DebugPrintAllObjects();
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}
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else if (!StrCmpi(cmd, "i"))
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{
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if (t->NumTokens == 1)
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{
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Print("Usage: i <obj_id>\n\n");
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}
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else
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{
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DebugPrintObjectInfo(ToInt(t->Token[1]));
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}
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}
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else if (!StrCmpi(cmd, "q"))
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{
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break;
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}
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else if (ToInt(cmd) != 0)
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{
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DebugPrintObjectInfo(ToInt(t->Token[0]));
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}
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else
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{
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Print("Command Not Found,\n\n");
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}
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FreeToken(t);
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}
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FreeToken(t);
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g_memcheck = true;
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}
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// Sort the objects by chronological order
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int SortObjectView(void *p1, void *p2)
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{
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TRACKING_OBJECT *o1, *o2;
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if (p1 == NULL || p2 == NULL)
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{
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return 0;
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}
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o1 = *(TRACKING_OBJECT **)p1;
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o2 = *(TRACKING_OBJECT **)p2;
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if (o1 == NULL || o2 == NULL)
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{
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return 0;
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}
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if (o1->Id > o2->Id)
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{
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return 1;
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}
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else if (o1->Id == o2->Id)
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{
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return 0;
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}
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return -1;
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}
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// Display the information of the object
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void PrintObjectInfo(TRACKING_OBJECT *o)
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{
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SYSTEMTIME t;
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char tmp[MAX_SIZE];
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// Validate arguments
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if (o == NULL)
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{
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return;
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}
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UINT64ToSystem(&t, o->CreatedDate);
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GetDateTimeStrMilli(tmp, sizeof(tmp), &t);
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Print(" TRACKING_OBJECT ID: %u\n"
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" TRACKING_OBJECT TYPE: %s\n"
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" ADDRESS: 0x%p\n"
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" TRACKING_OBJECT SIZE: %u bytes\n"
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" CREATED DATE: %s\n",
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o->Id, o->Name, UINT64_TO_POINTER(o->Address), o->Size, tmp);
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PrintCallStack(o->CallStack);
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}
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// Display the object information
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void DebugPrintObjectInfo(UINT id)
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{
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UINT i;
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TRACKING_OBJECT *o;
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// Search
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o = NULL;
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LockTrackingList();
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{
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for (i = 0;i < TRACKING_NUM_ARRAY;i++)
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{
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if (hashlist[i] != NULL)
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{
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TRACKING_LIST *t = hashlist[i];
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while (true)
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{
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if (t->Object->Id == id)
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{
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o = t->Object;
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break;
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}
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if (t->Next == NULL)
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{
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break;
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}
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t = t->Next;
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}
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if (o != NULL)
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{
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break;
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}
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}
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}
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}
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UnlockTrackingList();
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if (o == NULL)
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{
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// The ID could not be found
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Print("obj_id %u Not Found.\n\n", id);
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return;
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}
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PrintObjectInfo(o);
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Print("\n");
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}
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// Show a Summary of the object
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void PrintObjectList(TRACKING_OBJECT *o)
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{
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char tmp[MAX_SIZE];
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SYSTEMTIME t;
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UINT64ToSystem(&t, o->CreatedDate);
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GetTimeStrMilli(tmp, sizeof(tmp), &t);
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TrackGetObjSymbolInfo(o);
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Print("%-4u - [%-6s] %s 0x%p size=%-5u %11s %u\n",
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o->Id, o->Name, tmp, UINT64_TO_POINTER(o->Address), o->Size, o->FileName, o->LineNumber);
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}
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// Display all the objects
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void DebugPrintAllObjects()
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{
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UINT i;
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LIST *view;
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// Creating a List
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view = NewListFast(SortObjectView);
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LockTrackingList();
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{
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for (i = 0;i < TRACKING_NUM_ARRAY;i++)
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{
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if (hashlist[i] != NULL)
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{
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TRACKING_LIST *t = hashlist[i];
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while (true)
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{
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Add(view, t->Object);
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if (t->Next == NULL)
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{
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break;
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}
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t = t->Next;
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}
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}
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}
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}
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UnlockTrackingList();
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// Sort
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Sort(view);
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// Drawing
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for (i = 0;i < LIST_NUM(view);i++)
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{
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TRACKING_OBJECT *o = (TRACKING_OBJECT *)LIST_DATA(view, i);
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PrintObjectList(o);
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}
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// Release the list
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ReleaseList(view);
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Print("\n");
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}
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// List of the commands
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void DebugPrintCommandList()
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{
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Print(
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"a - All Objects\n"
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"i - Object Information\n"
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"? - Help\n"
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"q - Quit\n\n"
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);
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}
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// Display the usage of the memory
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void PrintMemoryStatus()
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{
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MEMORY_STATUS s;
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GetMemoryStatus(&s);
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Print("MEMORY STATUS:\n"
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" NUM_OF_MEMORY_BLOCKS: %u\n"
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" SIZE_OF_TOTAL_MEMORY: %u bytes\n",
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s.MemoryBlocksNum, s.MemorySize);
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}
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// Get the using state of the memory
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void GetMemoryStatus(MEMORY_STATUS *status)
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{
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UINT i, num, size;
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// Validate arguments
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if (status == NULL)
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{
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return;
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}
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LockTrackingList();
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{
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size = num = 0;
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for (i = 0;i < TRACKING_NUM_ARRAY;i++)
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{
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if (hashlist[i] != NULL)
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{
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TRACKING_LIST *t = hashlist[i];
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while (true)
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{
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TRACKING_OBJECT *o = t->Object;
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if (StrCmpi(o->Name, "MEM") == 0)
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{
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num++;
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size += o->Size;
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}
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if (t->Next == NULL)
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{
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break;
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}
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t = t->Next;
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}
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}
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}
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}
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UnlockTrackingList();
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status->MemoryBlocksNum = num;
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status->MemorySize = size;
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}
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// Get the symbol information by the object
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void TrackGetObjSymbolInfo(TRACKING_OBJECT *o)
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{
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// Validate arguments
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if (o == NULL)
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{
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return;
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}
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if (!(o->LineNumber == 0 && o->FileName[0] == 0))
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{
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return;
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}
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if (o->CallStack != NULL)
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{
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GetCallStackSymbolInfo(o->CallStack);
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if (StrLen(o->CallStack->filename) != 0 && o->CallStack->line != 0)
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{
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StrCpy(o->FileName, sizeof(o->FileName), o->CallStack->filename);
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o->LineNumber = o->CallStack->line;
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}
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}
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}
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// Put a new object into the tracking list
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void TrackNewObj(UINT64 addr, char *name, UINT size)
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{
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TRACKING_OBJECT *o;
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UINT new_id;
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// Validate arguments
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if (addr == 0 || name == NULL)
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{
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return;
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}
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if ((IsTrackingEnabled() && IsMemCheck()) == false)
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{
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// Don't track in detail if the memory check option is not specified
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return;
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}
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// Generate a new ID
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OSLock(obj_id_lock);
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{
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new_id = ++obj_id;
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}
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OSUnlock(obj_id_lock);
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o = OSMemoryAlloc(sizeof(TRACKING_OBJECT));
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o->Id = new_id;
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o->Address = addr;
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o->Name = name;
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o->Size = size;
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o->CreatedDate = LocalTime64();
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o->CallStack = WalkDownCallStack(GetCallStack(), 2);
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o->FileName[0] = 0;
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o->LineNumber = 0;
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LockTrackingList();
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{
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InsertTrackingList(o);
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}
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UnlockTrackingList();
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}
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// Remove the object from the tracking list
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void TrackDeleteObj(UINT64 addr)
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{
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TRACKING_OBJECT *o;
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// Validate arguments
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if (addr == 0)
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{
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return;
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}
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if ((IsTrackingEnabled() && IsMemCheck()) == false)
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{
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// Don't track in detail if the memory check option is not specified
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return;
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}
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LockTrackingList();
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{
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o = SearchTrackingList(addr);
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if (o == NULL)
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{
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UnlockTrackingList();
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Debug("TrackDeleteObj(): 0x%x not found in tracking list!\n", addr);
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return;
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}
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DeleteTrackingList(o, true);
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}
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UnlockTrackingList();
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}
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// Change the size of the object being tracked
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void TrackChangeObjSize(UINT64 addr, UINT size, UINT64 new_addr)
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{
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TRACKING_OBJECT *o;
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// Validate arguments
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if (addr == 0)
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{
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return;
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}
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if ((IsTrackingEnabled() && IsMemCheck()) == false)
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{
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// Don't track in detail if the memory check option is not specified
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return;
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}
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LockTrackingList();
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{
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o = SearchTrackingList(addr);
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if (o == NULL)
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{
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UnlockTrackingList();
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return;
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}
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DeleteTrackingList(o, false);
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o->Size = size;
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o->Address = new_addr;
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InsertTrackingList(o);
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}
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UnlockTrackingList();
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}
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// Memory address comparison function
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int CompareTrackingObject(const void *p1, const void *p2)
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{
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TRACKING_OBJECT *o1, *o2;
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// Validate arguments
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if (p1 == NULL || p2 == NULL)
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{
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return 0;
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}
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o1 = *(TRACKING_OBJECT **)p1;
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o2 = *(TRACKING_OBJECT **)p2;
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if (o1 == NULL || o2 == NULL)
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{
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return 0;
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}
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if (o1->Address > o2->Address)
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{
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return 1;
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}
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if (o1->Address == o2->Address)
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{
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return 0;
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}
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return -1;
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}
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// Search an object in the tracking list
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TRACKING_OBJECT *SearchTrackingList(UINT64 Address)
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{
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UINT i;
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// Validate arguments
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if (Address == 0)
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{
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return NULL;
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}
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i = TRACKING_HASH(Address);
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if (hashlist[i] != NULL)
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{
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TRACKING_LIST *tt = hashlist[i];
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while (true)
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{
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if (tt->Object->Address == Address)
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{
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return tt->Object;
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}
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tt = tt->Next;
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if (tt == NULL)
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{
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break;
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}
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}
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}
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return NULL;
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}
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// Remove an object from a tracking list
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void DeleteTrackingList(TRACKING_OBJECT *o, bool free_object_memory)
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{
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UINT i;
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// Validate arguments
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if (o == NULL)
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{
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return;
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}
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i = TRACKING_HASH(o->Address);
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if (hashlist[i] != NULL)
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{
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TRACKING_LIST *ft = NULL;
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if (hashlist[i]->Object == o)
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{
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ft = hashlist[i];
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hashlist[i] = hashlist[i]->Next;
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}
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else
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{
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TRACKING_LIST *tt = hashlist[i];
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TRACKING_LIST *prev = NULL;
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while (true)
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{
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if (tt->Object == o)
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{
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prev->Next = tt->Next;
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ft = tt;
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break;
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}
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if (tt->Next == NULL)
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{
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break;
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}
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prev = tt;
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tt = tt->Next;
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}
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}
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if (ft != NULL)
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{
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OSMemoryFree(ft);
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if (free_object_memory)
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{
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FreeCallStack(o->CallStack);
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OSMemoryFree(o);
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}
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}
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}
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}
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// Insert an object into the tracking list
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void InsertTrackingList(TRACKING_OBJECT *o)
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{
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UINT i;
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TRACKING_LIST *t;
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// Validate arguments
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if (o == NULL)
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{
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return;
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}
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t = OSMemoryAlloc(sizeof(TRACKING_LIST));
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t->Object = o;
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t->Next = NULL;
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i = TRACKING_HASH(o->Address);
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if (hashlist[i] == NULL)
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{
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hashlist[i] = t;
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}
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else
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{
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TRACKING_LIST *tt = hashlist[i];
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while (true)
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{
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if (tt->Next == NULL)
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{
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tt->Next = t;
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break;
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}
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tt = tt->Next;
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}
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}
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}
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// Lock the tracking list
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void LockTrackingList()
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{
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OSLock(obj_lock);
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}
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// Unlock the tracking list
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void UnlockTrackingList()
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{
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OSUnlock(obj_lock);
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}
|
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// Initialize the tracking
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void InitTracking()
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{
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UINT i;
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CALLSTACK_DATA *s;
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// Hash list initialization
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hashlist = (TRACKING_LIST **)OSMemoryAlloc(sizeof(TRACKING_LIST *) * TRACKING_NUM_ARRAY);
|
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for (i = 0;i < TRACKING_NUM_ARRAY;i++)
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{
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hashlist[i] = NULL;
|
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}
|
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|
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obj_id = 0;
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|
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// Create a lock
|
|
obj_lock = OSNewLock();
|
|
obj_id_lock = OSNewLock();
|
|
cs_lock = OSNewLock();
|
|
|
|
s = GetCallStack();
|
|
if (s == NULL)
|
|
{
|
|
do_not_get_callstack = true;
|
|
}
|
|
else
|
|
{
|
|
do_not_get_callstack = false;
|
|
FreeCallStack(s);
|
|
}
|
|
}
|
|
|
|
// Release the tracking
|
|
void FreeTracking()
|
|
{
|
|
UINT i;
|
|
// Delete the lock
|
|
OSDeleteLock(obj_lock);
|
|
OSDeleteLock(obj_id_lock);
|
|
OSDeleteLock(cs_lock);
|
|
cs_lock = NULL;
|
|
obj_id_lock = NULL;
|
|
obj_lock = NULL;
|
|
|
|
// Release all of the elements
|
|
for (i = 0;i < TRACKING_NUM_ARRAY;i++)
|
|
{
|
|
if (hashlist[i] != NULL)
|
|
{
|
|
TRACKING_LIST *t = hashlist[i];
|
|
|
|
while (true)
|
|
{
|
|
TRACKING_LIST *t2 = t;
|
|
TRACKING_OBJECT *o = t->Object;
|
|
|
|
FreeCallStack(o->CallStack);
|
|
OSMemoryFree(o);
|
|
|
|
t = t->Next;
|
|
|
|
OSMemoryFree(t2);
|
|
|
|
if (t == NULL)
|
|
{
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Release the list
|
|
OSMemoryFree(hashlist);
|
|
}
|
|
|
|
// Show the call stack
|
|
void PrintCallStack(CALLSTACK_DATA *s)
|
|
{
|
|
char tmp[MAX_SIZE * 2];
|
|
|
|
GetCallStackStr(tmp, sizeof(tmp), s);
|
|
Print("%s", tmp);
|
|
}
|
|
|
|
// Convert the call stack to a string
|
|
void GetCallStackStr(char *str, UINT size, CALLSTACK_DATA *s)
|
|
{
|
|
char tmp[MAX_SIZE];
|
|
char tmp2[MAX_SIZE];
|
|
char tmp3[MAX_SIZE];
|
|
UINT num, i;
|
|
// Validate arguments
|
|
if (str == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (s == NULL)
|
|
{
|
|
StrCpy(str, size, "(Unknown)\n");
|
|
}
|
|
else
|
|
{
|
|
num = 0;
|
|
str[0] = 0;
|
|
while (true)
|
|
{
|
|
if (s == NULL)
|
|
{
|
|
break;
|
|
}
|
|
|
|
GetCallStackSymbolInfo(s);
|
|
|
|
if (s->name == NULL)
|
|
{
|
|
Format(tmp, sizeof(tmp), "0x%02x ---", UINT64_TO_POINTER(s->offset));
|
|
}
|
|
else
|
|
{
|
|
Format(tmp, sizeof(tmp), "0x%p %s() + 0x%02x",
|
|
(void *)s->offset, s->name, UINT64_TO_POINTER(s->disp));
|
|
}
|
|
for (i = 0;i < num;i++)
|
|
{
|
|
tmp2[i] = ' ';
|
|
}
|
|
tmp2[i] = '\0';
|
|
StrCpy(tmp3, sizeof(tmp3), tmp2);
|
|
StrCat(tmp3, sizeof(tmp3), tmp);
|
|
Format(tmp, sizeof(tmp), "%-55s %11s %u\n", tmp3, s->filename, s->line);
|
|
StrCat(str, size, tmp);
|
|
num++;
|
|
s = s->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Get the current call stack
|
|
CALLSTACK_DATA *GetCallStack()
|
|
{
|
|
CALLSTACK_DATA *s;
|
|
if (do_not_get_callstack)
|
|
{
|
|
// Not to get the call stack
|
|
return NULL;
|
|
}
|
|
|
|
OSLock(cs_lock);
|
|
{
|
|
// Get the call stack
|
|
s = OSGetCallStack();
|
|
}
|
|
OSUnlock(cs_lock);
|
|
if (s == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
// Descend in the call stack for 3 steps
|
|
s = WalkDownCallStack(s, 3);
|
|
|
|
return s;
|
|
}
|
|
|
|
// Get the symbol information of the call stack
|
|
bool GetCallStackSymbolInfo(CALLSTACK_DATA *s)
|
|
{
|
|
bool ret;
|
|
// Validate arguments
|
|
if (s == NULL)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
OSLock(cs_lock);
|
|
{
|
|
ret = OSGetCallStackSymbolInfo(s);
|
|
}
|
|
OSUnlock(cs_lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
// Descend in the call stack by a specified number
|
|
CALLSTACK_DATA *WalkDownCallStack(CALLSTACK_DATA *s, UINT num)
|
|
{
|
|
CALLSTACK_DATA *cs, *tmp;
|
|
UINT i;
|
|
// Validate arguments
|
|
if (s == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
cs = s;
|
|
i = 0;
|
|
|
|
while (true)
|
|
{
|
|
if (i >= num)
|
|
{
|
|
return cs;
|
|
}
|
|
i++;
|
|
tmp = cs;
|
|
cs = tmp->next;
|
|
OSMemoryFree(tmp->name);
|
|
OSMemoryFree(tmp);
|
|
|
|
if (cs == NULL)
|
|
{
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Release the call stack
|
|
void FreeCallStack(CALLSTACK_DATA *s)
|
|
{
|
|
// Validate arguments
|
|
if (s == NULL)
|
|
{
|
|
return;
|
|
}
|
|
|
|
while (true)
|
|
{
|
|
CALLSTACK_DATA *next = s->next;
|
|
OSMemoryFree(s->name);
|
|
OSMemoryFree(s);
|
|
if (next == NULL)
|
|
{
|
|
break;
|
|
}
|
|
s = next;
|
|
}
|
|
}
|
|
|
|
|