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Bite the bullet. Have to use different

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binaries on 2.4 and 2.6.
This commit is contained in:
rsc 2004-09-17 22:09:31 +00:00
parent b4c842f139
commit 282c88f9de
4 changed files with 21 additions and 92 deletions
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35
src/lib9/ffork-Linux.c
View file

@ -1,32 +1,5 @@
#define ffork ffork_clone
#define getfforkid getfforkid_clone
#include "ffork-Linux-clone.c"
#undef ffork
#undef getfforkid
#define ffork ffork_pthread
#define getfforkid getfforkid_pthread
#ifdef __Linux26__
#include "ffork-pthread.c"
#undef ffork
#undef getfforkid
extern int _islinuxnptl(void);
int
ffork(int flags, void (*fn)(void*), void *arg)
{
if(_islinuxnptl())
return ffork_pthread(flags, fn, arg);
else
return ffork_clone(flags, fn, arg);
}
int
getfforkid(void)
{
if(_islinuxnptl())
return getfforkid_pthread();
else
return getfforkid_clone();
}
#else
#include "ffork-Linux-clone.c"
#endif

63
src/lib9/rendez-Linux.c
View file

@ -1,60 +1,5 @@
/*
* On Linux 2.6 and later, we can use pthreads (in fact, we must),
* but on earlier Linux, pthreads are incompatible with using our
* own coroutines in libthread. In order to make binaries that work
* on either system, we detect the pthread library in use and call
* the appropriate functions.
*/
#include <u.h>
#include <signal.h>
#include <pthread.h>
#include <libc.h>
#define _procsleep _procsleep_signal
#define _procwakeup _procwakeup_signal
#include "rendez-signal.c"
#undef _procsleep
#undef _procwakeup
#define _procsleep _procsleep_pthread
#define _procwakeup _procwakeup_pthread
#ifdef __Linux26__
#include "rendez-pthread.c"
#undef _procsleep
#undef _procwakeup
int
_islinuxnptl(void)
{
static char buf[100];
static int isnptl = -1;
if(isnptl == -1){
if(confstr(_CS_GNU_LIBPTHREAD_VERSION, buf, sizeof buf) > 0
&& strncmp(buf, "NPTL", 4) == 0)
isnptl = 1;
else
isnptl = 0;
}
return isnptl;
}
void
_procsleep(_Procrend *r)
{
if(_islinuxnptl())
return _procsleep_pthread(r);
else
return _procsleep_signal(r);
}
void
_procwakeup(_Procrend *r)
{
if(_islinuxnptl())
return _procwakeup_pthread(r);
else
return _procwakeup_signal(r);
}
#else
#include "rendez-signal.c"
#endif