pkgs/development/libraries/db/darwin-mutexes.patch

   1 diff -ur a/dist/aclocal/mutex.m4 b/dist/aclocal/mutex.m4
   2 --- a/dist/aclocal/mutex.m4     1969-12-31 19:00:01.000000000 -0500
   3 +++ b/dist/aclocal/mutex.m4     2023-06-05 19:14:47.214158196 -0400
   4 @@ -441,10 +445,11 @@
   5
   6  # _spin_lock_try/_spin_unlock: Apple/Darwin
   7  if test "$db_cv_mutex" = no; then
   8 -AC_TRY_LINK(,[
   9 -       int x;
  10 -       _spin_lock_try(&x);
  11 -       _spin_unlock(&x);
  12 +AC_TRY_LINK([
  13 +#include <os/lock.h>],[
  14 +       os_unfair_lock x = OS_UNFAIR_LOCK_INIT;
  15 +       bool _ = os_unfair_lock_trylock(&x);
  16 +       os_unfair_lock_unlock(&x);
  17  ], [db_cv_mutex=Darwin/_spin_lock_try])
  18  fi
  19
  20 diff -ur a/src/dbinc/mutex_int.h b/src/dbinc/mutex_int.h
  21 --- a/src/dbinc/mutex_int.h     1969-12-31 19:00:01.000000000 -0500
  22 +++ b/src/dbinc/mutex_int.h     2023-06-05 19:15:37.510514745 -0400
  23 @@ -154,14 +154,13 @@
  24   * Apple/Darwin library functions.
  25   *********************************************************************/
  26  #ifdef HAVE_MUTEX_DARWIN_SPIN_LOCK_TRY
  27 -typedef u_int32_t tsl_t;
  28 +#include <os/lock.h>
  29 +typedef os_unfair_lock tsl_t;
  30
  31  #ifdef LOAD_ACTUAL_MUTEX_CODE
  32 -extern int _spin_lock_try(tsl_t *);
  33 -extern void _spin_unlock(tsl_t *);
  34 -#define        MUTEX_SET(tsl)          _spin_lock_try(tsl)
  35 -#define        MUTEX_UNSET(tsl)        _spin_unlock(tsl)
  36 -#define        MUTEX_INIT(tsl)         (MUTEX_UNSET(tsl), 0)
  37 +#define        MUTEX_SET(tsl)          os_unfair_lock_trylock(tsl)
  38 +#define        MUTEX_UNSET(tsl)        os_unfair_lock_unlock(tsl)
  39 +#define        MUTEX_INIT(tsl)         ({ *(tsl) = OS_UNFAIR_LOCK_INIT; tsl; })
  40  #endif
  41  #endif
  42