Messages in this thread |  | | Date | Sun, 27 Aug 2000 19:59:19 -0600 | From | yodaiken@fsmlabs ... | Subject | Re: SCO: "thread creation is about a thousand times faster than on |
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On Sun, Aug 27, 2000 at 07:33:22PM -0700, Linus Torvalds wrote: > In article <20000827175449.A7759@hq.fsmlabs.com>, > <yodaiken@fsmlabs.com> wrote: > > > >In the POSIX spec fork demolishes all threads in the child. This is the > >only sensible answer and it seems wasteful to ignore the rare sensible > >parts of the POSIX spec. > > What?
I said it poorly. In the POSIX spec, the child is born single threaded. To quote:
16) A process is created with a single thread. If a multithreaded process calls fork(), the new process shall contain a replica of the calling thread and its entire address space, possibly including the states of mutexes and other resources. Consequently, to avoid errors, the child process may only execute async-signal safe operations (see 3.3.1.3) until such time as one of the exec functions is called. If {_POSIX_THREADS} is defined, fork handlers may be established by means of the pthread_atfork() function in order to maintain qpplication invariants across fork() calls.
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