adding findleak

findleak.c

@@ -0,0 +1,217 @@
+#include	<stdio.h>
+#include	<string.h>
+#include	<stdlib.h>
+#include	"findleak.h"
+
+#undef		malloc
+#undef		calloc
+#undef 		free
+
+
+static leakMem * ptr_start = NULL;
+static leakMem * ptr_next =  NULL;
+
+
+
+// -----------------------------------------------------------
+// Name: MyMalloc
+// Desc: This is hidden to user. when user call malloc function then 
+//       this function will be called.
+
+
+void *MyMalloc (uint nSize, cchar* file, uint lineNumber)
+{
+	void * ptr = malloc (nSize);
+	if (ptr != NULL) 
+	{
+		SubAddMemInfo(ptr, nSize, file, lineNumber);
+	}
+	return ptr;
+}
+
+// -----------------------------------------------------------
+// Name: MyCalloc
+// Desc: This is hidden to user. when user call calloc function then 
+//       this function will be called.
+
+
+void * MyCalloc (uint elements, uint nSize, const char * file, uint lineNumber)
+{
+	uint tSize;
+	void * ptr = calloc(elements , nSize);
+	if(ptr != NULL)
+	{
+		tSize = elements * nSize;
+		SubAddMemInfo (ptr, tSize, file, lineNumber);
+	}
+	return ptr;
+}
+
+// -----------------------------------------------------------
+// Name: SubAdd
+// Desc: It's actually  Adding the Info.
+
+
+void SubAdd(infoMem alloc_info)
+{
+	leakMem * mem_leak_info = NULL;
+	mem_leak_info = (leakMem *) malloc (sizeof(leakMem));
+	mem_leak_info->memData.addr = alloc_info.addr;
+	mem_leak_info->memData.nSize = alloc_info.nSize;
+	strcpy(mem_leak_info->memData.fileName, alloc_info.fileName); 
+	mem_leak_info->memData.lineNumber = alloc_info.lineNumber;
+	mem_leak_info->nxt = NULL;
+
+	if (ptr_start == NULL)	
+	{
+		ptr_start = mem_leak_info;
+		ptr_next = ptr_start;
+	}
+	else {
+		ptr_next->nxt = mem_leak_info;
+		ptr_next = ptr_next->nxt;				
+	}
+
+}
+
+
+
+// -----------------------------------------------------------
+// Name: ResetInfo
+// Desc: It erasing the memory using by List on the basis of info( pos)
+
+
+void ResetInfo(uint pos)
+{
+
+	uint index = 0;
+	leakMem * alloc_info, * temp;
+	
+	if(pos == 0)
+	{
+		leakMem * temp = ptr_start;
+		ptr_start = ptr_start->nxt;
+		free(temp);
+	}
+	else 
+	{
+		for(index = 0, alloc_info = ptr_start; index < pos; 
+			alloc_info = alloc_info->nxt, ++index)
+		{
+			if(pos == index + 1)
+			{
+				temp = alloc_info->nxt;
+				alloc_info->nxt =  temp->nxt;
+				free(temp);
+				break;
+			}
+		}
+	}
+}
+
+// -----------------------------------------------------------
+// Name: DeleteAll
+// Desc: It deletes the all elements which resides on List
+
+void DeleteAll()
+{
+	leakMem * temp = ptr_start;
+	leakMem * alloc_info = ptr_start;
+
+	while(alloc_info != NULL) 
+	{
+		alloc_info = alloc_info->nxt;
+		free(temp);
+		temp = alloc_info;
+	}
+}
+
+
+// -----------------------------------------------------------
+// Name: MyFree
+// Desc: 
+
+
+void MyFree(void * mem_ref)
+{
+		uint loop;
+   // if the allocated memory info is part of the list, removes it
+	leakMem  *leak_info = ptr_start;
+	/* check if allocate memory is in our list */
+	for(loop = 0; leak_info != NULL; ++loop, leak_info = leak_info->nxt)
+	{
+		if ( leak_info->memData.addr == mem_ref )
+		{
+			ResetInfo(loop);
+			break;
+		}
+	}
+	free(mem_ref);
+}
+
+
+// -----------------------------------------------------------
+// Name: SubAddMemInfo
+// Desc: it also fill the the Info
+
+
+void SubAddMemInfo (void * mem_ref, uint nSize, cchar * file, uint lineNumber)
+{
+	infoMem AllocInfo;
+
+	/* fill up the structure with all info */
+	memset( &AllocInfo, 0, sizeof ( AllocInfo ) );
+	AllocInfo.addr 	= mem_ref;
+	AllocInfo.nSize = nSize;
+	strncpy(AllocInfo.fileName, file, MAX_FILENAME_LENGTH);
+	AllocInfo.lineNumber = lineNumber;
+	
+	/* SubAdd the above info to a list */
+	SubAdd(AllocInfo);
+}
+
+// -----------------------------------------------------------
+// Name: WriteMemLeak
+// Desc: It writes information about Memory leaks in a file 
+//       Example: File is as : "/home/asadulla/test/MemLeakInfo.txt"
+
+
+
+void WriteMemLeak(void)
+{
+	//uint index;
+	leakMem *leak_info;
+
+	FILE * fp_write = fopen(OutFile, "wt");
+	char info[1024];
+
+	if(fp_write != NULL)
+	{
+		sprintf(info, "%s\n", "SUMMARY ABOUT MEMORY LEAKS OF YOUR SOURCE FILE ");
+		fwrite(info, (strlen(info) + 1) , 1, fp_write);
+		sprintf(info, "%s\n", "-----------------------------------");	
+		fwrite(info, (strlen(info) + 1) , 1, fp_write);
+		
+		for(leak_info = ptr_start; leak_info != NULL; leak_info = leak_info->nxt)
+		{
+
+			sprintf(info, "Name of your Source File                 : %s\n", leak_info->memData.fileName);
+			fwrite(info, (strlen(info) + 1) , 1, fp_write);
+
+			sprintf(info, "Starting Address                         : 0x%ld\n", (long)leak_info->memData.addr);
+			fwrite(info, (strlen(info) + 1) , 1, fp_write);
+
+			sprintf(info, " Total size Of memory Leak               : %d bytes\n", leak_info->memData.nSize);			
+			fwrite(info, (strlen(info) + 1) , 1, fp_write);
+
+			sprintf(info, "Line Number for which no DeAllocation    : %d\n", leak_info->memData.lineNumber);
+			fwrite(info, (strlen(info) + 1) , 1, fp_write);
+
+			sprintf(info, "%s\n", "-----------------------------------");	
+			fwrite(info, (strlen(info) + 1) , 1, fp_write);
+      fwrite(info, (strlen(info) + 1) , 1, fp_write);
+		}
+	}	
+	DeleteAll();
+}
+