signal_pending( current )―――》检查当前进程是否有信号处理,返回不为0表示有信号需要处理。 情景分析: 1,当一个系统调用处于等待状态时,比如等待输入缓冲区不为空,此时产生了信号,这个信号仅仅是在该进程的thread_info结构中标识一下,就是所谓的“发信号”,然后唤醒进程的系统调用,系统调用醒来后,此时仅仅用sig...
longdo_msgsnd(intmsqid,longmtype,void__user *mtext,size_tmsgsz,intmsgflg){structmsg_queue*msq;structmsg_msg*msg;interr;structipc_namespace*ns;ns = current->nsproxy->ipc_ns;if(msgsz > ns->msg_ctlmax || (long) msgsz <0|| msqid <0)return-EINVAL;if(mtype <1)return-EINVAL; msg =...
There's two patterns to check signals in the __wait_event*() macros: if (!signal_pending(current)) { schedule(); continue; } ret = -ERESTARTSYS; break; And the more natural: if (signal_pending(current)) { ret = -ERESTARTSYS; break; } schedule(); Change them all into the latter ...
wq_sleepPuts current task to sleep. Caller must hold queue lock. After return* lock isn't held. blk_mq_poll_hybrid_sleep pipe_write wait_for_partner filldir filldir64 compat_filldir do_select core_sys_selectWe can actually return ERESTARTSYS instead of EINTR, but I'd* like to be certain...
[ x] I have searched open and closed issues for duplicates [ x] I am submitting a bug report for existing functionality that does not work as intended [ x] I have read https://github.com/signalapp/Signal-Android/wiki/Submitting-useful-bu...
Returned value If pause() returns, it always returns -1 and sets errno to EINTR, indicating that a signal was received and handled successfully. Example CELEBP02 ⁄* CELEBP02 This example suspends execution and determines the current time. *⁄ #define _POSIX_SOURCE #include <unistd.h> #...
Returned value If pause() returns, it always returns -1 and sets errno to EINTR, indicating that a signal was received and handled successfully. Example CELEBP02 /* CELEBP02 This example suspends execution and determines the current time. */ #define _POSIX_SOURCE #include <unistd.h> #include...
aThe above information is based on our current knowledge and does not constitute an obligation on behalf of us to inform you of any change in the present circumstances. We can not be held liable if any information contained proves to be incorrect or incomplete. The above information is ...
Returned value If pause() returns, it always returns -1 and sets errno to EINTR, indicating that a signal was received and handled successfully. Example CELEBP02 /* CELEBP02 This example suspends execution and determines the current time. */ #define _POSIX_SOURCE #include <unistd.h> #include...
If pause() returns, it always returns -1 and sets errno to EINTR, indicating that a signal was received and handled successfully.Example CELEBP02 /* CELEBP02 This example suspends execution and determines the current time. */ #define _POSIX_SOURCE #include <unistd.h> #include <signal.h>...