When ptracing waitpid(pid, WUNTRACED) has two possible meanings.
- Wait for ptrace stops from the task with tid == pid
- Wait for ordinary stops from the process with tgid == pid
The only sensible behavior and the Linux behavior in 2.2 and
2.4 has been to consume both ptrace stops and group stops
When ptracing waitpid(pid, WUNTRACED) has two possible meanings.
- Wait for ptrace stops from the task with tid == pid
- Wait for ordinary stops from the process with tgid == pid
The only sensible behavior and the Linux behavior in 2.2 and
2.4 has been to consume both ptrace stops and group stops
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