Function report |
Source Code:lib\is_single_threaded.c |
Create Date:2022-07-28 06:14:18 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:Returns true if the task does not share ->mm with another thread/process.
Proto:bool current_is_single_threaded(void)
Type:bool
Parameter:Nothing
17 | task = current process |
22 | If atomic_read( & live) != 1 Then Return false |
28 | ret = false |
31 | If Value for the false possibility is greater at compile time( Per task flags (PF_*), defined further below: & I am a kernel thread ) Then Continue |
33 | If Value for the false possibility is greater at compile time(p == group_leader) Then Continue |
36 | for_each_thread(p, t) |
37 | If Value for the false possibility is greater at compile time(mm == mm) Then Go to found |
39 | If Value is more likely to compile time(mm) Then Break |
46 | smp_rmb() |
49 | ret = true |
50 | found : |
53 | Return ret |
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