50 #include <sys/prsystm.h>
  51 #include <sys/debug.h>
  52 #include <sys/kmem.h>
  53 #include <sys/atomic.h>
  54 #include <sys/fcntl.h>
  55 #include <sys/poll.h>
  56 #include <sys/rctl.h>
  57 #include <sys/port_impl.h>
  58 #include <sys/dtrace.h>
  59 
  60 #include <c2/audit.h>
  61 #include <sys/nbmlock.h>
  62 
  63 #ifdef DEBUG
  64 
  65 static uint32_t afd_maxfd;      /* # of entries in maximum allocated array */
  66 static uint32_t afd_alloc;      /* count of kmem_alloc()s */
  67 static uint32_t afd_free;       /* count of kmem_free()s */
  68 static uint32_t afd_wait;       /* count of waits on non-zero ref count */
  69 #define MAXFD(x)        (afd_maxfd = ((afd_maxfd >= (x))? afd_maxfd : (x)))
  70 #define COUNT(x)        atomic_add_32(&x, 1)
  71 
  72 #else   /* DEBUG */
  73 
  74 #define MAXFD(x)
  75 #define COUNT(x)
  76 
  77 #endif  /* DEBUG */
  78 
  79 kmem_cache_t *file_cache;
  80 
  81 static void port_close_fd(portfd_t *);
  82 
  83 /*
  84  * File descriptor allocation.
  85  *
  86  * fd_find(fip, minfd) finds the first available descriptor >= minfd.
  87  * The most common case is open(2), in which minfd = 0, but we must also
  88  * support fcntl(fd, F_DUPFD, minfd).
  89  *
  90  * The algorithm is as follows: we keep all file descriptors in an infix

  50 #include <sys/prsystm.h>
  51 #include <sys/debug.h>
  52 #include <sys/kmem.h>
  53 #include <sys/atomic.h>
  54 #include <sys/fcntl.h>
  55 #include <sys/poll.h>
  56 #include <sys/rctl.h>
  57 #include <sys/port_impl.h>
  58 #include <sys/dtrace.h>
  59 
  60 #include <c2/audit.h>
  61 #include <sys/nbmlock.h>
  62 
  63 #ifdef DEBUG
  64 
  65 static uint32_t afd_maxfd;      /* # of entries in maximum allocated array */
  66 static uint32_t afd_alloc;      /* count of kmem_alloc()s */
  67 static uint32_t afd_free;       /* count of kmem_free()s */
  68 static uint32_t afd_wait;       /* count of waits on non-zero ref count */
  69 #define MAXFD(x)        (afd_maxfd = ((afd_maxfd >= (x))? afd_maxfd : (x)))
  70 #define COUNT(x)        atomic_inc_32(&x)
  71 
  72 #else   /* DEBUG */
  73 
  74 #define MAXFD(x)
  75 #define COUNT(x)
  76 
  77 #endif  /* DEBUG */
  78 
  79 kmem_cache_t *file_cache;
  80 
  81 static void port_close_fd(portfd_t *);
  82 
  83 /*
  84  * File descriptor allocation.
  85  *
  86  * fd_find(fip, minfd) finds the first available descriptor >= minfd.
  87  * The most common case is open(2), in which minfd = 0, but we must also
  88  * support fcntl(fd, F_DUPFD, minfd).
  89  *
  90  * The algorithm is as follows: we keep all file descriptors in an infix