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glibc  2.9
Defines | Functions
gai_misc.h File Reference
#include <assert.h>
#include <signal.h>
#include <pthreadP.h>
#include <lowlevellock.h>

Go to the source code of this file.

Defines

#define DONT_NEED_GAI_MISC_COND   1
#define GAI_MISC_NOTIFY(waitlist)
#define GAI_MISC_WAIT(result, futex, timeout, cancel)
#define gai_start_notify_thread   __gai_start_notify_thread
#define gai_create_helper_thread   __gai_create_helper_thread

Functions

void __gai_start_notify_thread (void)
int __gai_create_helper_thread (pthread_t *threadp, void *(*tf)(void *), void *arg)

Define Documentation

#define DONT_NEED_GAI_MISC_COND   1

Definition at line 29 of file gai_misc.h.

Definition at line 78 of file gai_misc.h.

#define GAI_MISC_NOTIFY (   waitlist)
Value:
do {                                                                 \
    if (*waitlist->counterp > 0 && --*waitlist->counterp == 0)              \
      lll_futex_wake (waitlist->counterp, 1, LLL_PRIVATE);                  \
  } while (0)

Definition at line 31 of file gai_misc.h.

#define GAI_MISC_WAIT (   result,
  futex,
  timeout,
  cancel 
)

Definition at line 37 of file gai_misc.h.

Definition at line 77 of file gai_misc.h.


Function Documentation

int __gai_create_helper_thread ( pthread_t threadp,
void *(*)(void *)  tf,
void *  arg 
) [inline]

Definition at line 90 of file gai_misc.h.

{
  pthread_attr_t attr;

  /* Make sure the thread is created detached.  */
  pthread_attr_init (&attr);
  pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);

  /* The helper thread needs only very little resources.  */
  (void) pthread_attr_setstacksize (&attr, 4 * PTHREAD_STACK_MIN);

  /* Block all signals in the helper thread.  To do this thoroughly we
     temporarily have to block all signals here.  */
  sigset_t ss;
  sigset_t oss;
  sigfillset (&ss);
  INTERNAL_SYSCALL_DECL (err);
  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, &oss, _NSIG / 8);

  int ret = pthread_create (threadp, &attr, tf, arg);

  /* Restore the signal mask.  */
  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &oss, NULL,
                  _NSIG / 8);

  (void) pthread_attr_destroy (&attr);
  return ret;
}

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void __gai_start_notify_thread ( void  ) [inline]

Definition at line 81 of file gai_misc.h.

{
  sigset_t ss;
  sigemptyset (&ss);
  INTERNAL_SYSCALL_DECL (err);
  INTERNAL_SYSCALL (rt_sigprocmask, err, 4, SIG_SETMASK, &ss, NULL, _NSIG / 8);
}

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