The fix

To fix it, the fastest is to manually patch erts/include/internal/pthread/ethr_event.h to use the non-_PRIVATE futex implementation:

#if defined(FUTEX_WAIT_PRIVATE) && defined(FUTEX_WAKE_PRIVATE)
#  define ETHR_FUTEX_WAIT__ FUTEX_WAIT_PRIVATE
#  define ETHR_FUTEX_WAKE__ FUTEX_WAKE_PRIVATE
#else
#  define ETHR_FUTEX_WAIT__ FUTEX_WAIT
#  define ETHR_FUTEX_WAKE__ FUTEX_WAKE
#endif

......

//#if defined(FUTEX_WAIT_PRIVATE) && defined(FUTEX_WAKE_PRIVATE)
//#  define ETHR_FUTEX_WAIT__ FUTEX_WAIT_PRIVATE
//#  define ETHR_FUTEX_WAKE__ FUTEX_WAKE_PRIVATE  
//#else
#  define ETHR_FUTEX_WAIT__ FUTEX_WAIT
#  define ETHR_FUTEX_WAKE__ FUTEX_WAKE
//#endif

Quick test

If you suspect the private futex issue is your problem, but want to verify it before you recompile all of Erlang, the following program can pin it down:

#include <sys/syscall.h>
#include <unistd.h>
#include <sys/time.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdint.h>
typedef uint32_t u32; /* required on older kernel headers to fix a bug in futex.h Delete this line if it causes problems. */
#include <linux/futex.h>

int main(int argc, char *argv[])
{
#if defined(FUTEX_WAIT) && defined(FUTEX_WAKE) 
        uint32_t i = 1;
        int res = 0;
        res = syscall(__NR_futex, (void *) &i, FUTEX_WAKE, 1,
                        (void*)0,(void*)0, 0);
        if (res != 0)
        {
                printf("FUTEX_WAKE HAD ERR %i: %s
", errno, strerror(errno));
        } else {
                printf("FUTEX_WAKE SUCCESS
");
        }

        res = syscall(__NR_futex, (void *) &i, FUTEX_WAIT, 0,
                        (void*)0,(void*)0, 0);
        if (res != 0)
        {
                printf("FUTEX_WAIT HAD ERR %i: %s
", errno, strerror(errno));
        } else {
                printf("FUTEX_WAIT SUCCESS
");
        }
#else
        printf("FUTEX_WAKE and FUTEX_WAIT are not defined.
");
#endif

#if defined(FUTEX_WAIT_PRIVATE) && defined(FUTEX_WAKE_PRIVATE) 
        uint32_t j = 1;
        int res_priv = 0;
        res_priv = syscall(__NR_futex, (void *) &j, FUTEX_WAKE_PRIVATE, 1,
                        (void*)0,(void*)0, 0);
        if (res_priv != 0)
        {
                printf("FUTEX_WAKE_PRIVATE HAD ERR %i: %s
", errno, strerror(errno));
        } else {
                printf("FUTEX_WAKE_PRIVATE SUCCESS
");
        }

        res_priv = syscall(__NR_futex, (void *) &j, FUTEX_WAIT_PRIVATE, 0,
                        (void*)0,(void*)0, 0);
        if (res_priv != 0)
        {
                printf("FUTEX_WAIT_PRIVATE HAD ERR %i: %s
", errno, strerror(errno));
        } else {
                printf("FUTEX_WAIT_PRIVATE SUCCESS
");
        }
#else
        printf("FUTEX_WAKE_PRIVATE and FUTEX_WAIT_PRIVATE are not defined.
");
#endif


        return 0;
}

Paste it into futextest.c, 然后,gcc futextest.c and .a.out。

如果你执行私人 f子,请见

FUTEX_WAKE SUCCESS
FUTEX_WAIT SUCCESS
FUTEX_WAKE_PRIVATE SUCCESS
FUTEX_WAIT_PRIVATE SUCCESS

如果你有没有职能,就请见

FUTEX_WAKE SUCCESS
FUTEX WAIT SUCCESS
FUTEX_WAKE_PRIVATE HAD ERR 38: Function not implemented
FUTEX_WAIT_PRIVATE HAD ERR 38: Function not implemented

这一固定办法应使埃尔兰能够汇编并产生一种环境,由你在上安装rabbitmq 。