The simple answer to this first question is that a callback function isa function that is called through a function pointer.If you pass the pointer (address) of a function as an argument to another, when that pointer is used to call the function it points to it is said that a call bac...
发生函数调用的时候,主要通过call functionlabel来发生指令跳转。 call指令主要做如下两件事情: 把返回地址(当前指令的下一条指令地址)压入栈; 跳转到functionlabel 比如如下main函数调用了swap函数: 调用之前:esp寄存器存储0x108,eip执行到0x40057e 调用之后:esp寄存器存储0x104,eip执行到0x40052d,栈0x104存储了返回...
python3 ./cally.py ../sample/*.expand --caller main | dot -Grankdir=LR -Tsvg -o cally_full_test_time_call_graph.svg 生成文件非常大,就不展示了。(见github.com/f304646673/t) 只展示event_add函数的调用栈。 在这里插入图片描述 egypt egypt sample/*.expand --include-external --callees ma...
myinteger i;// is equivalent to int i;mystring s;// is the same as char *s;myfunc f;// compile equally as void (*f)(); 回调函数(Callback Function) 如果说 函数指针 是语言相关的话**,回调函数 就是一个语言无关的概念了。回调函数这个名字起的很好,可以明显感受到它有点 “返过来调用的...
python3./cally.py a-test-time.c.245r.expand \|dot-Grankdir=LR-Tpng-o cally_test_time_call_graph.png egypt 代码语言:javascript 代码运行次数:0 运行 AI代码解释 egypt a-test-time.c.245r.expand--include-external \|dot-Grankdir=LR-Tpng-o egypt_test_time_call_graph.png ...
在ABAP 帮助文档里,将这种通过 CALL 关键字进行的函数调用,标记为 System Function Call - 系统函数调用,只能由 SAP 内部使用,不建议用于应用开发。 CALL 后跟的系统函数名称,需要在 SAP Kernel 源文件 sapctab.h 里声明,并且修改此类系统函数,需要重新编译和链接 ABAP Kernel. ...
callFun(myFun,100);//传入函数指针常量,作为回调函数callFun(hisFun,200); callFun(herFun,300);return0; }voidcallFun(FunType fp,intx){ fp(x);//通过fp的指针执行传递进来的函数,注意fp所指的函数有一个参数}voidmyFun(intx){printf("myFun: %d\n",x); ...
mysql_drop_db() Drop database Yes mysql_dump_debug_info() Cause server to write debug information to error log mysql_eof() Determine whether last row of result set has been read Yes mysql_errno() Error number for most recently invoked MySQL function mysql_error() Error message for most...
If the argument is of an Output scope, every element pointed to by this pointer should be reassigned in every call for the function. C Argument Simulink Scope Function return Output double u Input, Parameter, Constant double *u double u[] double u[][2] double u[2][3] InputOutput (...
chromium中,对base::Thread线程,Thread::StartWithOptions会创建线程模型三静态结构及准备任务队列。但那些非base::Thread创建的线程,该怎么使用线程模型。 void trtspcapture::VideoReceiveStream::DecodeThreadFunction(void* ptr) { scoped_refptr<base::sequence_manager::TaskQueue> task_queue_; scoped_refptr<ba...