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add awaitfor and waitfor

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This commit is contained in:
rsc 2004-12-27 19:11:21 +00:00
parent 955a2ca78d
commit 0341761074
3 changed files with 30 additions and 10 deletions
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23
src/lib9/wait.c
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@ -2,13 +2,12 @@
#include <libc.h>
static Waitmsg*
_wait(int nohang)
_wait(int n, char *buf)
{
int n, l;
char buf[512], *fld[5];
int l;
char *fld[5];
Waitmsg *w;
n = (nohang ? awaitnohang : await)(buf, sizeof buf-1);
if(n <= 0)
return nil;
buf[n] = '\0';
@ -32,12 +31,24 @@ _wait(int nohang)
Waitmsg*
wait(void)
{
return _wait(0);
char buf[256];
return _wait(await(buf, sizeof buf-1), buf);
}
Waitmsg*
waitnohang(void)
{
return _wait(1);
char buf[256];
return _wait(awaitnohang(buf, sizeof buf-1), buf);
}
Waitmsg*
waitfor(int pid)
{
char buf[256];
return _wait(awaitfor(pid, buf, sizeof buf-1), buf);
}