1.安装 valgrind
yum install valgrind
2.测试用例
main.cpp
#include <iostream> using namespace std; struct StockInfo
{
int iMarket;
string sCode; StockInfo()
: iMarket(0)
{
}
}; int main()
{
StockInfo *pStockInfo = new StockInfo;
pStockInfo->iMarket = 1;
pStockInfo->sCode = "000001";
cout << "Market:" << pStockInfo->iMarket << "|" << "Code:" << pStockInfo->sCode << endl; //delete pStockInfo;
return 0;
}
makefile
TARGET=main INC=
LIB_PATH=
LIB= CFLAGS:=-Wall -g -O0 -lrt -rdynamic -fPIC -Wl,-rpath=./ $(INC) $(LIB_PATH)
CPPFLAGS:=$(CFLAGS) SRC=$(shell echo *.cpp)
OBJ=$(patsubst %.cpp,%.o,$(SRC)) all: $(TARGET) $(TARGET): $(OBJ)
$(CXX) $^ $(CFLAGS) $(LIB) -o $@ clean:
rm -f $(OBJ)
rm -f $(TARGET)
make 编译生成可执行文件:
3.使用 valgrind 检查内存泄漏:
valgrind --tool=memcheck --leak-check=full ./main
main.cpp第18行:
StockInfo *pStockInfo = new StockInfo;
new 的指针,没有释放,造成内存泄漏。
加上
delete pStockInfo;
之后就没有内存泄漏了:
valgrind 用法详见:http://blog.csdn.net/sduliulun/article/details/7732906