Today I learned - getpid() in glibc used to cache the result (pid). This was removed in recent glibc because it was "not reliable". What? How can getpid value change over time???? https://sourceware.org/glibc/wiki/Release/2.25#pid_cache_removal …
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For the few that are AS-safe (raise comes to mind) we mask signals and gettid.
Thanks. Twitter will use this to make your timeline better. UndoUndo
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