release/src/router/glib/gthread/gthread-solaris.c

   1 /* GLIB - Library of useful routines for C programming
   2  * Copyright (C) 1995-1997  Peter Mattis, Spencer Kimball and Josh MacDonald
   3  *
   4  * gthread.c: solaris thread system implementation
   5  * Copyright 1998 Sebastian Wilhelmi; University of Karlsruhe
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /*
  24  * Modified by the GLib Team and others 1997-1999.  See the AUTHORS
  25  * file for a list of people on the GLib Team.  See the ChangeLog
  26  * files for a list of changes.  These files are distributed with
  27  * GLib at ftp://ftp.gtk.org/pub/gtk/.
  28  */
  29
  30 /*
  31  * MT safe
  32  */
  33
  34 #include <thread.h>
  35 #include <errno.h>
  36 #include <stdlib.h>
  37 #include <stdio.h>
  38
  39 #define solaris_print_error( name, num )                        \
  40   g_error( "file %s: line %d (%s): error %s during %s",         \
  41            __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION,          \
  42            g_strerror((num)), #name )
  43
  44 #define solaris_check_for_error( what ) G_STMT_START{           \
  45   int error = (what);                                           \
  46   if( error ) { solaris_print_error( what, error ); }           \
  47   }G_STMT_END
  48
  49 static GMutex *
  50 g_mutex_new_solaris_impl (void)
  51 {
  52   GMutex *result = (GMutex *) g_new (mutex_t, 1);
  53   solaris_check_for_error (mutex_init ((mutex_t *) result, USYNC_PROCESS, 0));
  54   return result;
  55 }
  56
  57 static void
  58 g_mutex_free_solaris_impl (GMutex * mutex)
  59 {
  60   solaris_check_for_error (mutex_destroy ((mutex_t *) mutex));
  61   free (mutex);
  62 }
  63
  64 /* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use
  65    functions from gmem.c and gmessages.c; */
  66
  67 /* mutex_lock, mutex_unlock can be taken directly, as
  68    signature and semantic are right, but without error check then!!!!,
  69    we might want to change this therefore. */
  70
  71 static gboolean
  72 g_mutex_trylock_solaris_impl (GMutex * mutex)
  73 {
  74   int result;
  75   result = mutex_trylock ((mutex_t *) mutex);
  76   if (result == EBUSY)
  77     return FALSE;
  78   solaris_check_for_error (result);
  79   return TRUE;
  80 }
  81
  82 static GCond *
  83 g_cond_new_solaris_impl ()
  84 {
  85   GCond *result = (GCond *) g_new (cond_t, 1);
  86   solaris_check_for_error (cond_init ((cond_t *) result, USYNC_THREAD, 0));
  87   return result;
  88 }
  89
  90 /* cond_signal, cond_broadcast and cond_wait
  91    can be taken directly, as signature and semantic are right, but
  92    without error check then!!!!, we might want to change this
  93    therfore. */
  94
  95 #define G_MICROSEC 1000000
  96 #define G_NANOSEC 1000000000
  97
  98 static gboolean
  99 g_cond_timed_wait_solaris_impl (GCond * cond,
 100                                 GMutex * entered_mutex,
 101                                 GTimeVal * abs_time)
 102 {
 103   int result;
 104   timestruc_t end_time;
 105   gboolean timed_out;
 106
 107   g_return_val_if_fail (cond != NULL, FALSE);
 108   g_return_val_if_fail (entered_mutex != NULL, FALSE);
 109
 110   if (!abs_time)
 111     {
 112       g_cond_wait (cond, entered_mutex);
 113       return TRUE;
 114     }
 115
 116   end_time.tv_sec = abs_time->tv_sec;
 117   end_time.tv_nsec = abs_time->tv_usec * (G_NANOSEC / G_MICROSEC);
 118   g_assert (end_time.tv_nsec < G_NANOSEC);
 119   result = cond_timedwait ((cond_t *) cond, (mutex_t *) entered_mutex,
 120                            &end_time);
 121   timed_out = (result == ETIME);
 122   if (!timed_out)
 123     solaris_check_for_error (result);
 124   return !timed_out;
 125 }
 126
 127 static void
 128 g_cond_free_solaris_impl (GCond * cond)
 129 {
 130   solaris_check_for_error (cond_destroy ((cond_t *) cond));
 131   g_free (cond);
 132 }
 133
 134 static GPrivate *
 135 g_private_new_solaris_impl (GDestroyNotify destructor)
 136 {
 137   GPrivate *result = (GPrivate *) g_new (thread_key_t,1);
 138   solaris_check_for_error (thr_keycreate ((thread_key_t *) result,
 139                                           destructor));
 140   return result;
 141 }
 142
 143 /* NOTE: the functions g_private_get and g_private_set may not use
 144    functions from gmem.c and gmessages.c */
 145
 146 static void
 147 g_private_set_solaris_impl (GPrivate * private_key, gpointer value)
 148 {
 149   if (!private_key)
 150     return;
 151
 152   thr_setspecific (*(thread_key_t *) private_key, value);
 153 }
 154
 155 static gpointer
 156 g_private_get_solaris_impl (GPrivate * private_key)
 157 {
 158   gpointer result;
 159
 160   if (!private_key)
 161     return NULL;
 162
 163   thr_getspecific (*(thread_key_t *) private_key, &result);
 164
 165   return result;
 166 }
 167
 168 static GThreadFunctions g_thread_functions_for_glib_use_default =
 169 {
 170   g_mutex_new_solaris_impl,
 171   (void (*)(GMutex *)) mutex_lock,
 172   g_mutex_trylock_solaris_impl,
 173   (void (*)(GMutex *)) mutex_unlock,
 174   g_mutex_free_solaris_impl,
 175   g_cond_new_solaris_impl,
 176   (void (*)(GCond *)) cond_signal,
 177   (void (*)(GCond *)) cond_broadcast,
 178   (void (*)(GCond *, GMutex *)) cond_wait,
 179   g_cond_timed_wait_solaris_impl,
 180   g_cond_free_solaris_impl,
 181   g_private_new_solaris_impl,
 182   g_private_get_solaris_impl,
 183   g_private_set_solaris_impl
 184 };