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 Lesser 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  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser 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 1997-2000.  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 <config.h>
  35
  36 #include <thread.h>
  37 #include <errno.h>
  38 #include <stdlib.h>
  39 #include <stdio.h>
  40 #ifdef HAVE_UNISTD_H
  41 #include <unistd.h>
  42 #endif
  43
  44 #define solaris_print_error( name, num )                                \
  45   g_error( "file %s: line %d (%s): error %s during %s",                 \
  46            __FILE__, __LINE__, G_GNUC_PRETTY_FUNCTION,                  \
  47            g_strerror((num)), #name )
  48
  49 #define solaris_check_for_error( what ) G_STMT_START{                   \
  50   int error = (what);                                                   \
  51   if( error ) { solaris_print_error( what, error ); }                   \
  52   }G_STMT_END
  53
  54 static gulong g_thread_min_stack_size = 0;
  55
  56 #define G_MUTEX_SIZE (sizeof (mutex_t))
  57
  58 #define PRIORITY_LOW_VALUE 0
  59 #define PRIORITY_NORMAL_VALUE 50
  60 #define PRIORITY_URGENT_VALUE 127
  61
  62 #define HAVE_G_THREAD_IMPL_INIT
  63 static void
  64 g_thread_impl_init()
  65 {
  66   g_thread_min_stack_size = thr_min_stack();
  67   /* The default priority on Solaris is 0. Set it to something sane */
  68   solaris_check_for_error (thr_setprio (thr_self (), PRIORITY_NORMAL_VALUE));
  69 }
  70
  71 static GMutex *
  72 g_mutex_new_solaris_impl (void)
  73 {
  74   GMutex *result = (GMutex *) g_new (mutex_t, 1);
  75   solaris_check_for_error (mutex_init ((mutex_t *) result, USYNC_THREAD, 0));
  76   return result;
  77 }
  78
  79 static void
  80 g_mutex_free_solaris_impl (GMutex * mutex)
  81 {
  82   solaris_check_for_error (mutex_destroy ((mutex_t *) mutex));
  83   g_free (mutex);
  84 }
  85
  86 /* NOTE: the functions g_mutex_lock and g_mutex_unlock may not use
  87    functions from gmem.c and gmessages.c; */
  88
  89 /* mutex_lock, mutex_unlock can be taken directly, as
  90    signature and semantic are right, but without error check then!!!!,
  91    we might want to change this therefore. */
  92
  93 static gboolean
  94 g_mutex_trylock_solaris_impl (GMutex * mutex)
  95 {
  96   int result;
  97   result = mutex_trylock ((mutex_t *) mutex);
  98   if (result == EBUSY)
  99     return FALSE;
 100   solaris_check_for_error (result);
 101   return TRUE;
 102 }
 103
 104 static GCond *
 105 g_cond_new_solaris_impl ()
 106 {
 107   GCond *result = (GCond *) g_new (cond_t, 1);
 108   solaris_check_for_error (cond_init ((cond_t *) result, USYNC_THREAD, 0));
 109   return result;
 110 }
 111
 112 /* cond_signal, cond_broadcast and cond_wait
 113    can be taken directly, as signature and semantic are right, but
 114    without error check then!!!!, we might want to change this
 115    therfore. */
 116
 117 #define G_NSEC_PER_SEC 1000000000
 118
 119 static gboolean
 120 g_cond_timed_wait_solaris_impl (GCond * cond,
 121                                 GMutex * entered_mutex,
 122                                 GTimeVal * abs_time)
 123 {
 124   int result;
 125   timestruc_t end_time;
 126   gboolean timed_out;
 127
 128   g_return_val_if_fail (cond != NULL, FALSE);
 129   g_return_val_if_fail (entered_mutex != NULL, FALSE);
 130
 131   if (!abs_time)
 132     {
 133       g_cond_wait (cond, entered_mutex);
 134       return TRUE;
 135     }
 136
 137   end_time.tv_sec = abs_time->tv_sec;
 138   end_time.tv_nsec = abs_time->tv_usec * (G_NSEC_PER_SEC / G_USEC_PER_SEC);
 139   g_assert (end_time.tv_nsec < G_NSEC_PER_SEC);
 140   result = cond_timedwait ((cond_t *) cond, (mutex_t *) entered_mutex,
 141                            &end_time);
 142   timed_out = (result == ETIME);
 143   if (!timed_out)
 144     solaris_check_for_error (result);
 145   return !timed_out;
 146 }
 147
 148 static void
 149 g_cond_free_solaris_impl (GCond * cond)
 150 {
 151   solaris_check_for_error (cond_destroy ((cond_t *) cond));
 152   g_free (cond);
 153 }
 154
 155 static GPrivate *
 156 g_private_new_solaris_impl (GDestroyNotify destructor)
 157 {
 158   GPrivate *result = (GPrivate *) g_new (thread_key_t,1);
 159   solaris_check_for_error (thr_keycreate ((thread_key_t *) result,
 160                                           destructor));
 161   return result;
 162 }
 163
 164 /* NOTE: the functions g_private_get and g_private_set may not use
 165    functions from gmem.c and gmessages.c */
 166
 167 static void
 168 g_private_set_solaris_impl (GPrivate * private_key, gpointer value)
 169 {
 170   if (!private_key)
 171     return;
 172
 173   thr_setspecific (*(thread_key_t *) private_key, value);
 174 }
 175
 176 static gpointer
 177 g_private_get_solaris_impl (GPrivate * private_key)
 178 {
 179   gpointer result;
 180
 181   if (!private_key)
 182     return NULL;
 183
 184   thr_getspecific (*(thread_key_t *) private_key, &result);
 185
 186   return result;
 187 }
 188
 189 static void
 190 g_thread_set_priority_solaris_impl (gpointer thread, GThreadPriority priority)
 191 {
 192   solaris_check_for_error (thr_setprio (*(thread_t*)thread,
 193                                         g_thread_priority_map [priority]));
 194 }
 195
 196 static void
 197 g_thread_create_solaris_impl (GThreadFunc thread_func,
 198                               gpointer arg,
 199                               gulong stack_size,
 200                               gboolean joinable,
 201                               gboolean bound,
 202                               GThreadPriority priority,
 203                               gpointer thread,
 204                               GError **error)
 205 {
 206   long flags = (bound ? THR_BOUND : 0) | (joinable ? 0: THR_DETACHED);
 207   gint ret;
 208
 209   g_return_if_fail (thread_func);
 210   g_return_if_fail (priority >= G_THREAD_PRIORITY_LOW);
 211   g_return_if_fail (priority <= G_THREAD_PRIORITY_URGENT);
 212
 213   if (stack_size)
 214     stack_size = MAX (g_thread_min_stack_size, stack_size);
 215
 216   ret = thr_create (NULL, stack_size, (void* (*)(void*))thread_func,
 217                     arg, flags, thread);
 218
 219   if (ret == EAGAIN)
 220     {
 221       g_set_error (error, G_THREAD_ERROR, G_THREAD_ERROR_AGAIN,
 222                    "Error creating thread: %s", g_strerror (ret));
 223       return;
 224     }
 225
 226   solaris_check_for_error (ret);
 227
 228   g_thread_set_priority_solaris_impl (thread, priority);
 229 }
 230
 231 static void
 232 g_thread_yield_solaris_impl (void)
 233 {
 234   thr_yield ();
 235 }
 236
 237 static void
 238 g_thread_join_solaris_impl (gpointer thread)
 239 {
 240   gpointer ignore;
 241   solaris_check_for_error (thr_join (*(thread_t*)thread, NULL, &ignore));
 242 }
 243
 244 static void
 245 g_thread_exit_solaris_impl (void)
 246 {
 247   thr_exit (NULL);
 248 }
 249
 250 static void
 251 g_thread_self_solaris_impl (gpointer thread)
 252 {
 253   *(thread_t*)thread = thr_self();
 254 }
 255
 256 static GThreadFunctions g_thread_functions_for_glib_use_default =
 257 {
 258   g_mutex_new_solaris_impl,
 259   (void (*)(GMutex *)) mutex_lock,
 260   g_mutex_trylock_solaris_impl,
 261   (void (*)(GMutex *)) mutex_unlock,
 262   g_mutex_free_solaris_impl,
 263   g_cond_new_solaris_impl,
 264   (void (*)(GCond *)) cond_signal,
 265   (void (*)(GCond *)) cond_broadcast,
 266   (void (*)(GCond *, GMutex *)) cond_wait,
 267   g_cond_timed_wait_solaris_impl,
 268   g_cond_free_solaris_impl,
 269   g_private_new_solaris_impl,
 270   g_private_get_solaris_impl,
 271   g_private_set_solaris_impl,
 272   g_thread_create_solaris_impl,
 273   g_thread_yield_solaris_impl,
 274   g_thread_join_solaris_impl,
 275   g_thread_exit_solaris_impl,
 276   g_thread_set_priority_solaris_impl,
 277   g_thread_self_solaris_impl,
 278   NULL /* no equal function necessary on Solaris */
 279 };