c - 如何告诉 gcc 通过在代码的每一行调用我自己的函数来检测代码？

Question

比如有来源:

void my_special_debugging_function(const char* function_name, const char* file_name, int line_number);

void func1() {
    func3();
    func4();
}

void foo() {
    func1();
    if(qqq) {
        func2();
    };
    func3();
    func4();
    for(...) {
        func5();
    }
}

它应该编译为:

void my_special_debugging_function(const char* function_name, const char* file_name, int line_number);

void func1() {
    my_special_debugging_function("func1", "prog.c", 3);
    func3();
    my_special_debugging_function("func1", "prog.c", 4);
    func4();
    my_special_debugging_function("func1", "prog.c", 5);
}

void foo() {
    my_special_debugging_function("foo", "prog.c", 8);
    func1();
    my_special_debugging_function("foo", "prog.c", 9);
    if(qqq) {
        my_special_debugging_function("foo", "prog.c", 10);
        func2();
        my_special_debugging_function("foo", "prog.c", 11);
    };
    my_special_debugging_function("foo", "prog.c", 12);
    func3();
    my_special_debugging_function("foo", "prog.c", 13);
    func4();
    my_special_debugging_function("foo", "prog.c", 14);
    for(...) {
        my_special_debugging_function("foo", "prog.c", 15);
        func5();
        my_special_debugging_function("foo", "prog.c", 16);
    }
    my_special_debugging_function("foo", "prog.c", 17);
}

当然，my_special_debugging_function 应该可以使用backtrace 函数。

是否有 gcc 选项可以做到这一点？或者是否有工具可以在源代码级别执行此操作？ (例如用我的函数生成其他 C 源代码)

@related How to "interleave" C/C++ souce with my string (only inside functions at appropriate places)?

@related What profiler should I use to measure _real_ time (including waiting for syscalls) spend in this function, not _CPU_ one

Answer 1

请参阅 GCC 文档中的 -finstrument-functions。您可能想在调试函数中使用 dladdr()，这可能还需要与 -Wl,-export-dynamic 链接。