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Viewing changes to lib9/wait.c

  • Committer: Bazaar Package Importer
  • Author(s): Daniel Baumann
  • Date: 2006-01-25 15:33:00 UTC
  • Revision ID: james.westby@ubuntu.com-20060125153300-6hh4p9wx8iqqply5
Tags: upstream-2
Import upstream version 2

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lib9/wait.c
 
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#include <u.h>
 
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#include <libc.h>
 
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static Waitmsg*
 
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_wait(int n, char *buf)
 
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{
 
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        int l;
 
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        char *fld[5];
 
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        Waitmsg *w;
 
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        if(n <= 0)
 
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                return nil;
 
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        buf[n] = '\0';
 
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        if(tokenize(buf, fld, nelem(fld)) != nelem(fld)){
 
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                werrstr("couldn't parse wait message");
 
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                return nil;
 
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        }
 
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        l = strlen(fld[4])+1;
 
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        w = malloc(sizeof(Waitmsg)+l);
 
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        if(w == nil)
 
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                return nil;
 
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        w->pid = atoi(fld[0]);
 
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        w->time[0] = atoi(fld[1]);
 
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        w->time[1] = atoi(fld[2]);
 
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        w->time[2] = atoi(fld[3]);
 
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        w->msg = (char*)&w[1];
 
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        memmove(w->msg, fld[4], l);
 
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        return w;
 
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}
 
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Waitmsg*
 
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wait(void)
 
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{
 
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        char buf[256];
 
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        return _wait(await(buf, sizeof buf-1), buf);
 
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}
 
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Waitmsg*
 
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waitnohang(void)
 
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{
 
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        char buf[256];
 
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        return _wait(awaitnohang(buf, sizeof buf-1), buf);
 
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}
 
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Waitmsg*
 
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waitfor(int pid)
 
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{
 
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        char buf[256];
 
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        return _wait(awaitfor(pid, buf, sizeof buf-1), buf);
 
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}
 
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