gh0s7/mckernel
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

release the resources of the process at exit(2)/exit_group(2).

Browse Source
This commit is contained in:
NAKAMURA Gou
2013-05-28 10:49:33 +09:00
parent 9354c82ee7
commit fa1be382c7
8 changed files with 140 additions and 27 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
kernel/syscall.c
View File

@ -349,18 +349,24 @@ SYSCALL_DECLARE(lseek)
SYSCALL_DECLARE(exit_group)
{
SYSCALL_HEADER;
struct process *proc = cpu_local_var(current);
#ifdef DCFA_KMOD
do_mod_exit((int)ihk_mc_syscall_arg0(ctx));
#endif
do_syscall(&request, ctx);
runq_del_proc(cpu_local_var(current), ihk_mc_get_processor_id());
free_process_memory(cpu_local_var(current));
/* XXX: send SIGKILL to all threads in this process */
do_syscall(&request, ctx);
#define IS_DETACHED_PROCESS(proc) (1) /* should be implemented in the future */
proc->status = PS_ZOMBIE;
if (IS_DETACHED_PROCESS(proc)) {
/* release a reference for wait(2) */
proc->status = PS_EXITED;
free_process(proc);
}
//cpu_local_var(next) = &cpu_local_var(idle);
cpu_local_var(current) = NULL;
schedule();
return 0;
@ -962,26 +968,34 @@ SYSCALL_DECLARE(futex)
SYSCALL_DECLARE(exit)
{
struct process *proc = cpu_local_var(current);
#ifdef DCFA_KMOD
do_mod_exit((int)ihk_mc_syscall_arg0(ctx));
#endif
/* XXX: for if all threads issued the exit(2) rather than exit_group(2),
* exit(2) also should delegate.
*/
/* If there is a clear_child_tid address set, clear it and wake it.
* This unblocks any pthread_join() waiters. */
if (cpu_local_var(current)->thread.clear_child_tid) {
if (proc->thread.clear_child_tid) {
kprintf("exit clear_child!\n");
*cpu_local_var(current)->thread.clear_child_tid = 0;
*proc->thread.clear_child_tid = 0;
barrier();
futex((uint32_t *)cpu_local_var(current)->thread.clear_child_tid,
futex((uint32_t *)proc->thread.clear_child_tid,
FUTEX_WAKE, 1, 0, NULL, 0, 0);
}
runq_del_proc(cpu_local_var(current), cpu_local_var(current)->cpu_id);
free_process_memory(cpu_local_var(current));
proc->status = PS_ZOMBIE;
if (IS_DETACHED_PROCESS(proc)) {
/* release a reference for wait(2) */
proc->status = PS_EXITED;
free_process(proc);
}
cpu_local_var(current) = NULL;
schedule();
return 0;