相当于.long sys_clone,因为sys_clone是函数名,所以.long生成的是sys_clone函数名对应的地址 */ #define CALL(x) .long x #ifdef CONFIG_FUNCTION_TRACER /* 配合ldrcc一起看,原来ldrcc是这样 */ ldrcc pc, [tbl, scno, lsl #2] /* 把CALL(x)代入ldrcc,最后是这样 */ ldrcc pc, sys_clone(...
1/*文件地址: linux内核目录/kernel/Fork.c*/23/*以下代码根据不同的内核配置定义了不同的clone函数4* 其最终都调用的do_fork函数,我们先看看SYSCALL_DEFINE是怎么实现的吧,实现在此代码片段后面5*/6#ifdef __ARCH_WANT_SYS_CLONE7#ifdef CONFIG_CLONE_BACKWARDS8SYSCALL_DEFINE5(clone, unsignedlong, clone_f...
因为高级语言的ABI都是完全符合规范的。在Linux，fork并非一个真正的系统调用，我印象里它走的是clone或...
child terminates (either normally, by calling _exit(2), or abnormally, after delivery of a fatal signal), or it makes a call to execve(2). Until that point, the child shares all memory with its parent, includ- ing the stack.The child must not return from the current function or call...
/* causes final put_task_struct in finish_task_switch(). */ tsk->state = TASK_DEAD; schedule(); BUG(); /* Avoid "noreturn function does return". */ for (;;) cpu_relax(); /* For when BUG is null */ } 1. 2. 3.
Unix标准的复制进程的系统调用时fork(即分叉),但是Linux,BSD等操作系统并不止实现这一个,确切的说linux实现了三个,fork,vfork,clone(确切说vfork创造出来的是轻量级进程,也叫线程,是共享资源的进程)
clone() creates a new process, in a manner similar to fork(2). ... When the child process is created with clone(), it commences execution by calling the function pointed to by the argument fn. (This differs from fork(2), where execution continues in the child from the point of the...
but it returns twice. Once it returns in the parent process while the second time it returns in the child process. Note that the order of execution of the parent and the child may vary depending upon the process scheduling algorithm. So we see that fork function is used inprocess creation...
fork Function fork create a child process.Summary of callInclude File(s)<sys/types.h> Manual Section2Summarypid_t fork(void);Success Failure Sets errno Return0 in child, child PID in parent -1 YesWhen a fork system call is made, the OS generates a copy of the parent process which beco...
ValetLinuxis a Laravel development environment for Linux minimalists. No Vagrant, no/etc/hostsfile. You can even share your sites publicly using local tunnels.Yeah, we like it too. ValetLinuxconfigures your system to always run Nginx in the background when your machine starts. Then, usingDnsMa...