在Linux 中,无论进程还是线程,到了内核里面,我们统一都叫作任务(Task), 由一个统一的结构 task_struct 进行管理。 Linux 将所有的 task_struct 用链表串起来进行管理。 struct list_head tasks; task_struct 的结构如图所示: 任务ID 任务号用于操作系统进行排期,下发任务等。在内核中,虽然进程和线程都是任务,...
因为要频繁的创建删除, 数组咋行呢。 structlist_headtasks;// 双向链表, 维护任务列表 2. 任务ID 这里的pid_t类型是一个int, 为什么有一个pid还需要有一个tgid呢, 这是因为进程和线程在操作系统眼里都是一个task_struct, 但是总归要区分不是, pid就是这个task_struct的id, tgid则是这个task_struct所属于...
prio_array_t *array; unsignedlong sleep_avg; long interactive_credit; unsignedlonglong timestamp; int activated; unsignedlong policy; cpumask_t cpus_allowed; unsignedint time_slice, first_time_slice; struct list_head tasks; struct list_head ptrace_children; struct list_head ptrace_list; struct...
unsigned int ptrace; ptraced is the list of tasks this task is using ptrace on. * This includes both natural children and PTRACE_ATTACH targets. * p->ptrace_entry is p's link on the p->parent->ptraced list. */ struct list_head ptraced; struct list_head ptrace_entry; unsigned long ...
struct list_head tasks; ... /* 指向该进程的内存区描述符 */ struct mm_struct *mm, *active_mm; ... /* 进程ID,每个进程(线程)的PID都不同 */ pid_t pid; /* 线程组ID,同一个线程组拥有相同的pid,与领头线程(该组中第一个轻量级进程)pid一致,保存在tgid中,线程组领头线程的pid和tgid相同 ...
struct list_head tasks; (11)、to limit pushing to one attempt #ifdef CONFIG_SMP struct plist_node pushable_tasks; #endif (12)、防止内核堆栈溢出 #ifdef CONFIG_CC_STACKPROTECTOR /* Canary value for the -fstack-protector gcc feature */ ...
* tasks I'm ptracing. */ struct list_head children; /* list of my children */ struct list_head sibling; /* linkage in my parent's children list */ struct task_struct *group_leader; /* threadgroup leader */ /* PID/PID hash table linkage. */ ...
(10)、用于构建进程链表 [cpp] view plain copy struct list_head tasks; (11)、to limit pushing to one attempt [cpp] view plain copy #ifdef CONFIG_SMP struct plist_node pushable_tasks; #endif 补丁说明请参考:http://lkml.indiana.edu/hypermail/linux/kernel/0808.3/0503.html...
unsignedlongrcu_tasks_nvcsw; u8rcu_tasks_holdout; u8rcu_tasks_idx; intrcu_tasks_idle_cpu; structlist_headrcu_tasks_holdout_list; #endif/* #ifdef CONFIG_TASKS_RCU */ structsched_infosched_info; structlist_headtasks; #ifdef CONFIG_SMP ...
struct list_head tasks; (11)、to limit pushing to one attempt #ifdef CONFIG_SMP struct plist_node pushable_tasks; #endif (12)、防止内核堆栈溢出 #ifdef CONFIG_CC_STACKPROTECTOR /* Canary value for the -fstack-protector gcc feature */ ...