Date: Sun, 2 Apr 2000 16:12:18 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: Alfred Perlstein <bright@wintelcom.net> Cc: current@FreeBSD.ORG Subject: Re: cvs commit: src/sys/i386/i386 support.s src/sys/kern init_sysent.c kern_prot.c kern_sig.c Message-ID: <200004022312.QAA51299@apollo.backplane.com> References: <200004021752.KAA13175@freefall.freebsd.org> <20000402163552.P21029@fw.wintelcom.net>
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:Along with snagging the "easy ones" for MP safeness, shouldn't getpid
:be MP safe? The struct proc is allocated from the proc_zone, and
:afaik zalloc allows for stable storage meaning it's safe to dereference
:the ppid pointer once the entire struct proc is populated, which needs
:to happen before the process can even call getpid().
:
:phk seems to agree.
:
:--
:-Alfred Perlstein - [bright@wintelcom.net|alfred@freebsd.org]
:"I have the heart of a child; I keep it in a jar on my desk."
The problem is that getpid() also extracts the ppid (look at
the syscall code), which is not MP safe.
-Matt
Matthew Dillon
<dillon@backplane.com>
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