## modules/th/thread.h

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## DEFINITIONS

This source file includes following functions.

1. rw_lock_t

       1 #ifndef READ_THREAD
       2 #define READ_THREAD
       3
       4 /***************************************
       5   $Revision: 1.18 $
       6
       7   Thread module (th)
       8
       9   Status: NOT REVUED, NOT TESTED
      10
      11   ******************/ /******************
      12   Copyright (c) 1999,2000,2001,2002               RIPE NCC
      13
      14   All Rights Reserved
      15
      16   Permission to use, copy, modify, and distribute this software and its
      17   documentation for any purpose and without fee is hereby granted,
      18   provided that the above copyright notice appear in all copies and that
      19   both that copyright notice and this permission notice appear in
      20   supporting documentation, and that the name of the author not be
      21   used in advertising or publicity pertaining to distribution of the
      22   software without specific, written prior permission.
      23
      24   THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
      25   ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS; IN NO EVENT SHALL
      26   AUTHOR BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY
      27   DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
      28   AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
      29   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
      30   ***************************************/
      31 #include <pthread.h>       /* Posix thread library */
      32 /*
      33 typedef struct _rwlock {
      34   pthread_mutex_t rw_mutex;
      35   pthread_cond_t rw_cond;
      36   int rw_count;
      37 } rw_lock_t;
      38 */
      39 /* structure for writers favouring functions */
      40 typedef struct _rwlock {
      41   pthread_mutex_t rw_mutex;
      42   pthread_cond_t rw_cond;
      43   pthread_cond_t w_cond;
      44   int rw_count;
      45   int w_count;
      46 } rw_lock_t;
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      47
      48 /*
      49 typedef struct _wd_args_t {
      50   int connected_socket;
      51   pthread_t tid;
      52 } wd_args_t;
      53 */
      54 /* Readers writers lock functions favoring readers */
      55 void TH_acquire_read_lock(rw_lock_t *prw_lock);
      56 void TH_release_read_lock(rw_lock_t *prw_lock);
      57 void TH_acquire_write_lock(rw_lock_t *prw_lock);
      58 void TH_release_write_lock(rw_lock_t *prw_lock);
      59 void TH_init_read_write_lock(rw_lock_t *prw_lock);
      60
      61 /* Readers writers lock functions favoring writers */
      62 void TH_acquire_read_lockw(rw_lock_t *prw_lock);
      63 void TH_release_read_lockw(rw_lock_t *prw_lock);
      64 void TH_acquire_write_lockw(rw_lock_t *prw_lock);
      65 void TH_release_write_lockw(rw_lock_t *prw_lock);
      66 void TH_init_read_write_lockw(rw_lock_t *prw_lock);
      67
      68 int TH_get_id(void);
      69 char *TH_to_string(void);
      70 pthread_t TH_create(void *do_function(void *), void *arguments );
      71
      72 /*
      73 void TH_hdl_signal(void);
      74 void TH_watchdog(wd_args_t *wd_args);
      75 void TH_run(int sock, void *do_function(void *));
      76 void TH_run1(int sock, void *do_function(void *));
      77 void TH_run2(void *function(void *));
      78 */
      79 #endif /* READ_THREAD */

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