获取c++函数名字：
objdump --syms /path/to/binary | grep minor_collection_begin
objdump -CS a.out -C, --demangle 去掉 -C，显示 mangled 之后的函数名字 c++filt： manlged -> demangled
GitHub - iovisor/bcc: BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more
C++ probes with perf
