Set the normal PID surrogate priority according to getpid() to avoid

2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>

	* glib/gthread.c: Set the normal PID surrogate priority according
	to getpid() to avoid errors for niced processes. (#86116)

	* gthread/gthread-impl.c, gthread/gthread-posix.c,
	gthread/gthread-solaris.c: Do the same for the posix/dce
	implementation. Solaris still needs to set priority of the main
	thread, because all unbound threads will schedule according to
	that value and it defaults to 0 (the minimal value).

ChangeLog

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-10

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-12

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-2

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-4

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-6

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

ChangeLog.pre-2-8

@@ -1,3 +1,14 @@
+2002-08-06  Sebastian Wilhelmi  <wilhelmi@ira.uka.de>
+
+	* glib/gthread.c: Set the normal PID surrogate priority according
+	to getpid() to avoid errors for niced processes. (#86116)
+
+	* gthread/gthread-impl.c, gthread/gthread-posix.c,
+	gthread/gthread-solaris.c: Do the same for the posix/dce
+	implementation. Solaris still needs to set priority of the main
+	thread, because all unbound threads will schedule according to
+	that value and it defaults to 0 (the minimal value). 
+
 Thu Jul 25 14:23:15 2002  Owen Taylor  <otaylor@redhat.com>
 
  	* glib/gfileutils.c: Clarify the behavior of g_build_path()

glib/gthread.c

@@ -88,7 +88,7 @@ struct  _GRealThread
 };
 
 #ifdef G_THREAD_USE_PID_SURROGATE
-static gint priority_map[] = { 15, 0, -15, -20 };
+static gint priority_map[4];
 static gboolean prio_warned = FALSE;
 # define SET_PRIO(pid, prio) G_STMT_START{				\
   gint error = setpriority (PRIO_PROCESS, (pid), priority_map[prio]);	\
@@ -171,6 +171,17 @@ g_mutex_init (void)
   G_THREAD_UF (thread_self, (&main_thread->system_thread));
 
   g_mutex_protect_static_mutex_allocation = g_mutex_new ();
+
+#ifdef G_THREAD_USE_PID_SURROGATE
+  priority_map[G_THREAD_PRIORITY_NORMAL] = 
+    getpriority (PRIO_PROCESS, (getpid ()));
+  priority_map[G_THREAD_PRIORITY_LOW] = 
+    MIN (20, priority_map[G_THREAD_PRIORITY_NORMAL] + 10);
+  priority_map[G_THREAD_PRIORITY_HIGH] = 
+    MAX (-20, priority_map[G_THREAD_PRIORITY_NORMAL] - 10);
+  priority_map[G_THREAD_PRIORITY_URGENT] = 
+    MAX (-20, priority_map[G_THREAD_PRIORITY_NORMAL] - 15);
+#endif /* G_THREAD_USE_PID_SURROGATE */
 }
 
 void 

gthread/gthread-impl.c

@@ -53,13 +53,13 @@ static gint g_thread_priority_map [G_THREAD_PRIORITY_URGENT + 1];
 #endif
 
 #ifndef PRIORITY_NORMAL_VALUE
-# define PRIORITY_NORMAL_VALUE 						\
+# define PRIORITY_NORMAL_VALUE						\
-  (PRIORITY_LOW_VALUE + (PRIORITY_URGENT_VALUE - PRIORITY_LOW_VALUE) * 4 / 10)
+  ((PRIORITY_LOW_VALUE * 6 + PRIORITY_URGENT_VALUE * 4) / 10)
 #endif /* PRIORITY_NORMAL_VALUE */
 
 #ifndef PRIORITY_HIGH_VALUE
-# define PRIORITY_HIGH_VALUE 						\
+# define PRIORITY_HIGH_VALUE						\
-  (PRIORITY_LOW_VALUE + (PRIORITY_URGENT_VALUE - PRIORITY_LOW_VALUE) * 8 / 10) 
+  ((PRIORITY_NORMAL_VALUE + PRIORITY_URGENT_VALUE * 2) / 3)
 #endif /* PRIORITY_HIGH_VALUE */
 
 void g_mutex_init (void);
@@ -386,9 +386,6 @@ g_thread_init (GThreadFunctions* init)
    * all the thread functions
    */
   g_threads_got_initialized = TRUE;
-
-  /* we want the main thread to run with normal priority */
-  g_thread_set_priority (g_thread_self(), G_THREAD_PRIORITY_NORMAL);
 }
 
 #else /* !G_THREADS_ENABLED */

gthread/gthread-posix.c

@@ -97,6 +97,7 @@ static gboolean posix_check_cmd_prio_warned = FALSE;
 
 #if defined (POSIX_MIN_PRIORITY) && defined (POSIX_MAX_PRIORITY)
 # define HAVE_PRIORITIES 1
+static gint priority_normal_value;
 # ifdef __FreeBSD__
    /* FreeBSD threads use different priority values from the POSIX_
     * defines so we just set them here. The corresponding macros
@@ -106,23 +107,41 @@ static gboolean posix_check_cmd_prio_warned = FALSE;
 #  define PRIORITY_LOW_VALUE      0
 #  define PRIORITY_URGENT_VALUE   31
 # else /* !__FreeBSD__ */
-#  define PRIORITY_LOW_VALUE POSIX_MIN_PRIORITY
+#  define PRIORITY_LOW_VALUE      POSIX_MIN_PRIORITY
-#  define PRIORITY_URGENT_VALUE POSIX_MAX_PRIORITY
+#  define PRIORITY_URGENT_VALUE   POSIX_MAX_PRIORITY
 # endif /* !__FreeBSD__ */
+# define PRIORITY_NORMAL_VALUE    priority_normal_value
 #endif /* POSIX_MIN_PRIORITY && POSIX_MAX_PRIORITY */
 
 static gulong g_thread_min_stack_size = 0;
 
 #define G_MUTEX_SIZE (sizeof (pthread_mutex_t))
 
-#ifdef _SC_THREAD_STACK_MIN
+#if defined(_SC_THREAD_STACK_MIN) || defined (HAVE_PRIORITIES)
 #define HAVE_G_THREAD_IMPL_INIT
 static void 
 g_thread_impl_init()
 {
+#ifdef _SC_THREAD_STACK_MIN
   g_thread_min_stack_size = MAX (sysconf (_SC_THREAD_STACK_MIN), 0);
-}
 #endif /* _SC_THREAD_STACK_MIN */
+#ifdef HAVE_PRIORITIES
+# ifdef G_THREADS_IMPL_POSIX
+  {
+    struct sched_param sched;
+    int policy;
+    posix_check_cmd (pthread_getschedparam (pthread_self(), &policy, &sched));
+    priority_normal_value = sched.sched_priority;
+  }
+# else /* G_THREADS_IMPL_DCE */
+  posix_check_cmd (priority_normal_value = 
+		   pthread_getprio (*(pthread_t*)thread, 
+				    g_thread_priority_map [priority]));
+# endif
+#endif /* HAVE_PRIORITIES */
+
+}
+#endif /* _SC_THREAD_STACK_MIN || HAVE_PRIORITIES */
 
 static GMutex *
 g_mutex_new_posix_impl (void)

gthread/gthread-solaris.c

@@ -54,6 +54,7 @@ static gulong g_thread_min_stack_size = 0;
 #define G_MUTEX_SIZE (sizeof (mutex_t))
 
 #define PRIORITY_LOW_VALUE 0
+#define PRIORITY_NORMAL_VALUE 50
 #define PRIORITY_URGENT_VALUE 127
 
 #define HAVE_G_THREAD_IMPL_INIT
@@ -61,6 +62,8 @@ static void
 g_thread_impl_init()
 {
   g_thread_min_stack_size = thr_min_stack();
+  /* The default priority on Solaris is 0. Set it to something sane */
+  solaris_check_for_error (thr_setprio (thr_self (), PRIORITY_NORMAL_VALUE));
 }
 
 static GMutex *