前言

看到資料上演示base::Bind類成員函式，試試。
不能跑的實現都是假的。

實驗

// @file Z:\chromium\src\base\test\test_by_me\main.cpp
// @brief write some test code to study chromium project

/**
# cd /d Z:\chromium\src\
# gn --ide=vs args out\my_x86_d
# gn ls out\my_x86_d > d:\my_tmp\gn_list_target.log
# 新加的測試工程位置//base/test:test_by_me
# autoninja -C out\my_x86_d test_by_me
*/

#include <stdlib.h>
#include <stdio.h>

#include <memory>
#include <set>
#include <utility>

#include "base/bind.h" // for base:Bind()
#include "base/logging.h" // for LOG()
#include "base/callback.h" // for base ::Callback()
#include "base\memory\scoped_refptr.h" // for scoped_refptr<>
#include "base\memory\ref_counted.h"// for RefCountedThreadSafe<>

#define PROG_NAME "test_my_me"

void fn_test();
void fn_test_bind_global_function();
void fn_test_bind_class_member_function();

int main(int argc, char** argv)
{
	printf(">> %s\n", PROG_NAME);
//	printf("hello chromium\n");

	fn_test();

	system("pause");
	return EXIT_SUCCESS;
}

/** run result
debug.log
[1217/140711.850:WARNING:main.cpp(69)] >> fn_test_bind_class_member_function()
[1217/140711.850:INFO:main.cpp(70)] 3
*/

void fn_test()
{
	// fn_test_bind_global_function();
	fn_test_bind_class_member_function();
}

class cls_Ref : public base::RefCountedThreadSafe<cls_Ref> {
public:
	cls_Ref() = default;
	int Foo() { return 3; }
	void PrintBye() { LOG(INFO) << "bye."; }

private:
	friend class base::RefCountedThreadSafe<cls_Ref>;
	virtual ~cls_Ref() = default;

	DISALLOW_COPY_AND_ASSIGN(cls_Ref);
};

void fn_test_bind_class_member_function()
{
	// 用base::Bind()繫結類
	scoped_refptr<cls_Ref> p_cls_ref = new (cls_Ref);

	// cls_Ref::Foo 的函式原型是 int(void)
	base::Callback<int(void)> cb_cls_ref = base::Bind(&cls_Ref::Foo, p_cls_ref);

	DLOG(WARNING) << ">> fn_test_bind_class_member_function()";
	DLOG(INFO) << cb_cls_ref.Run();  // Prints out 3.
}

int Return5() { return 5; }

void fn_test_bind_global_function()
{
	// 用base::Bind()繫結全域性函式
	base::Callback<int(void)> func_cb = base::Bind(&Return5);

	DLOG(WARNING) << ">> fn_test_bind_global_function()";
	LOG(INFO) << func_cb.Run();  // Prints 5.
	DLOG(WARNING) << func_cb.Run();
}


 

Z:\chromium\src\base\test\BUILD.gn

# Trivial executable which outputs space-delimited argv to stdout,
# used for testing.
executable("test_child_process") {
  testonly = true
  sources = [
    "test_child_process.cc",
  ]
  deps = [
    "//build/config:exe_and_shlib_deps",
  ]
}

executable("test_by_me") {
  sources = [
    "test_by_me/main.cpp",
  ]
  deps = [
    "//base",
  ]
}