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prepare for a condition variable for each process. (Redmine#193)

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This commit is contained in:
Tomoki Shirasawa
2014-07-25 09:17:43 +09:00
parent 101a0f6e4a
commit 10190e9ed6
3 changed files with 7 additions and 6 deletions
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7
executer/kernel/control.c
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@@ -330,12 +330,13 @@ retry_alloc:
}
wqhln->pid = pid;
wqhln->req = 0;
init_waitqueue_head(&wqhln->wq_syscall);
list_add_tail(&wqhln->list, &c->wq_list);
}
ihk_ikc_spinlock_unlock(&c->wq_list_lock, flags);
c->req = 1;
wqhln->req = 1;
wake_up(&wqhln->wq_syscall);
return 0;
@@ -388,6 +389,7 @@ retry_alloc:
}
wqhln->pid = swd.pid;
wqhln->req = 0;
init_waitqueue_head(&wqhln->wq_syscall);
irqflags = ihk_ikc_spinlock_lock(&c->wq_list_lock);
@@ -403,7 +405,7 @@ retry_alloc:
list_add_tail(&wqhln->list, &c->wq_list);
ihk_ikc_spinlock_unlock(&c->wq_list_lock, irqflags);
ret = wait_event_interruptible(wqhln->wq_syscall, c->req);
ret = wait_event_interruptible(wqhln->wq_syscall, wqhln->req);
/* Remove per-process wait queue head */
irqflags = ihk_ikc_spinlock_lock(&c->wq_list_lock);
@@ -427,7 +429,6 @@ retry_alloc:
return -EINTR;
}
c->req = 0;
#if 1
mb();
if (!c->param.request_va->valid) {