The mtrace() function installs hook functions for the memory-allocation functions (malloc(3), realloc(3) memalign(3), free(3)). These hook functions record tracing information about memory

       allocation and deallocation.  The tracing information can be used to discover memory leaks and attempts to free nonallocated memory in a program.

Author: Wang Jiazi

Linux/Mtrace/Makefile

@@ -0,0 +1,5 @@
+mtrace_test: mtrace_test.cpp
+	g++ $^ -o $@ -g3 -std=c++11
+
+dump: mtrace_test
+	mtrace $^ output

Linux/Mtrace/mtrace_test.cpp

@@ -0,0 +1,24 @@
+#include <iostream>
+#include <mcheck.h>
+#include <stdlib.h>
+using namespace std;
+
+struct MemBlock
+{
+    char data[100];
+};
+int main()
+{
+    setenv("MALLOC_TRACE","output",1);
+    mtrace();
+    int *p1=new int;
+
+    MemBlock *p2=new MemBlock;
+    int *p3=(int*)malloc(sizeof(int));
+    int *p4=(int*)malloc(sizeof(int));
+    int *p5=(int*)malloc(sizeof(int)*16);
+
+    delete p1;
+    free(p3);
+    return 0;
+}