从fork系统调用分析system_call中断处理过程 1. 系统调用初始化流程 内核在完成初始化后, 执行的第一个内核程序是init/main.c中定义的asmlinkage void __init start_kernel(void)启动内核;start_kernel()执行时, 又会调用arch/x86/kernel/traps.c中定义的void __init trap_
In C programming language, fork() function is used to create a new process. It is a system call used to create a child process. fork() function is non...Become a member and unlock all Study Answers Start today. ...
http://lxr.free-electrons.com/source/kernel/fork.c?v=4.5#L1785 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #ifdef __ARCH_WANT_SYS_FORKSYSCALL_DEFINE0(fork){#ifdefCONFIG_MMUreturn_do_fork(SIGCHLD,0,0,NULL,NULL,0);#else/* can not support in nommu mode */return-EINVAL;#endif}...
* 'fork.c' contains the help-routines for the 'fork' system call * (see also system_call.s), and some misc functions ('verify_area'). * Fork is rather simple, once you get the hang of it, but the memory * management can be a bitch. See 'mm/mm.c': 'copy_page_tables()' *...
问在Linux中使用fork()、exec()和waitpid()系统调用实现system()函数EN在Linux系统中，fork()是一个...
The syntax of fork() system call in Linux, Ubuntu is as follows: pid_t fork(void); In the syntax the return type ispid_t. When the child process is successfully created, the PID of the child process is returned in the parent process and 0 will be returned to the child process itsel...
In Unix, a "fork" is a system call that creates a new process by duplicating an existing one. The original process is called the parent, and the newly created one is the child. Both processes run independently, sharing the same code, data, and file descriptors. The fork system call retu...
Ronald E. Barkley is a member of technical staff in the UNIX Systems Development Department at AT&T Bell Laboratories in SummitBell Labs Technical JournalE. Barkley and C. F. Schimmel. `A performance study of the UNIX system V fork system call using CASPER', AT&T Technical Journal, September...
在kernel/fork.c中: // 1. CPU执行中断指令压入的用户栈地址ss和esp,标志寄存器eflags和返回地址cs和eip; // 2. 在刚进入system_call时压入栈的段寄存器ds、es、fs和edx、ecx、ebx; // 3. 调用sys_call_table中sys_fork函数时压入栈的返回地址(用参数none表示); // 4. 在调用copy_process()分配...
C语言 fork()用法及代码示例叉系统调用用于创建一个称为子进程的新进程,该子进程与进行fork()调用的进程(父进程)同时运行。创建新的子进程后,两个进程将在fork()系统调用之后执行下一条指令。子进程使用与父进程相同的pc(程序计数器),相同的CPU寄存器,相同的打开文件。 它不带任何参数,并返回一个整数值。以下...