C语言是一门博大精深的语言,我相信没有研读过Linux中代码的人,很少有人体会到吧,废话不多说,简单的写了一个测试demo
test.h
- typedef void (* func1_callback)(void);
- typedef void (* func2_callback)(int i);
-
- typedef struct {
- int size;
- func1_callback func1_cb;
- func2_callback func2_cb;
-
- } testCallback;
-
- typedef struct {
- int size;
- int (*init)(testCallback *_tcb);
- int (*set)(int i);
- int (*release)(void);
- } testInterface;
test.c
- #include "test.h"
- #include <stdio.h>
-
- testCallback tcb;
-
- int test_init(testCallback *_tcb) {
- printf("This is test init function.\n");
- tcb = *_tcb;
- tcb.func1_cb();
- return 0;
- }
-
- int test_set(int i) {
- printf("This is test set function, argumaent i is : %d\n", i);
- tcb.func2_cb(i);
- return 0;
- }
-
- int test_release(void) {
- printf("This is test release function.\n");
- return 0;
- }
-
- static const testInterface tInterface = {
- .size = sizeof(testInterface),
- .init = test_init,
- .set = test_set,
- .release = test_release,
- };
-
- const testInterface *get_test_interface() {
- return &tInterface;
- }
main.c
- #include "test.h"
- #include <stdio.h>
- void func1_cb() {
- printf("This is func1 cb, has no argument.\n");
- }
-
- void func2_cb(int i) {
- printf("This is func2 cb, argument i is : %d\n", i);
- }
-
- testCallback tcb = {
- sizeof(testCallback),
- func1_cb,
- func2_cb,
- };
-
- static const testInterface *ti;
-
- int main(void) {
- ti = get_test_interface();
- ti->init(&tcb);
- ti->set(10);
- ti->release();
-
- return 0;
- }
这个测试demo很简单,不用解释了吧,这篇先这样了。
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