added interpretation of scheduling policy and parameter information to

pthread_create

initial implementation of get/set id routines

better argument checking on scheduler functions.

c/src/exec/posix/src/pthread.c

@@ -582,11 +582,14 @@ int pthread_create(
 {
   const pthread_attr_t  *attrp;
   Priority_Control       core_priority;
+  boolean                is_timesliced;
   boolean                is_fp;
   boolean                status;
   Thread_Control        *the_thread;
   char                  *default_name = "psx";
   POSIX_API_Control     *api;
+  int                    schedpolicy = SCHED_RR;
+  struct sched_param     schedparams;
 
   attrp = (attr) ? attr : &_POSIX_Threads_Default_attributes;
 
@@ -600,14 +603,12 @@ int pthread_create(
 
 #if 0
   int contentionscope;
-  int inheritsched;
   int schedpolicy;
   struct sched_param schedparam;
 
 #if defined(_POSIX_THREAD_CPUTIME)
   int  cputime_clock_allowed;  /* see time.h */
 #endif
-  int  detachstate;
 #endif
 
   /*
@@ -621,20 +622,44 @@ int pthread_create(
 
   switch ( attrp->inheritsched ) {
     case PTHREAD_INHERIT_SCHED:
+      api = _Thread_Executing->API_Extensions[ THREAD_API_POSIX ];
+      schedpolicy = api->schedpolicy;
+      schedparams = api->Schedule;
       break; 
     case PTHREAD_EXPLICIT_SCHED:
+      schedpolicy = attrp->schedpolicy;
+      schedparams = attrp->schedparam;
       break; 
   }
 
   /*
-   *  Validate the RTEMS API priority and convert it to the core priority range.
+   *  Interpret the scheduling parameters.
    */
- 
+
+  is_timesliced = FALSE;
+
   if ( !_POSIX_Priority_Is_valid( attrp->schedparam.sched_priority ) )
     return EINVAL;
  
   core_priority = _POSIX_Priority_To_core( attrp->schedparam.sched_priority );
  
+  switch ( schedpolicy ) {
+    case SCHED_OTHER:
+    case SCHED_FIFO:
+      break;
+    case SCHED_RR:
+      is_timesliced = TRUE;
+      break;
+    case SCHED_SPORADIC:
+      /*  XXX interpret the following parameters */
+#if 0
+  ss_low_priority;     /* Low scheduling priority for sporadic */
+  ss_replenish_period; /* Replenishment period for sporadic server */
+  ss_initial_budget;   /* Initial budget for sporadic server */
+#endif
+      break;
+  }
+
   /*
    *  Currently all POSIX threads are floating point if the hardware 
    *  supports it.
@@ -673,7 +698,7 @@ int pthread_create(
     is_fp,
     core_priority,
     TRUE,                 /* preemptible */
-    TRUE,                 /* timesliced */
+    is_timesliced,        /* timesliced */
     0,                    /* isr level */
     &default_name         /* posix threads don't have a name */
   );

c/src/exec/posix/src/sched.c

@@ -85,7 +85,18 @@ int sched_get_priority_max(
   int  policy
 )
 {
-  /* XXX error check the policy */
+  switch ( policy ) {
+    case SCHED_OTHER:
+    case SCHED_FIFO:
+    case SCHED_RR:
+    case SCHED_SPORADIC:
+      break;
+ 
+    default:
+      errno = EINVAL;
+      return -1;
+  }
+
   return POSIX_SCHEDULER_MAXIMUM_PRIORITY;
 }
 
@@ -98,7 +109,18 @@ int sched_get_priority_min(
   int  policy
 )
 {
-  /* XXX error check the policy */
+  switch ( policy ) {
+    case SCHED_OTHER:
+    case SCHED_FIFO:
+    case SCHED_RR:
+    case SCHED_SPORADIC:
+      break;
+ 
+    default:
+      errno = EINVAL;
+      return -1;
+  }
+
   return POSIX_SCHEDULER_MINIMUM_PRIORITY;
 }
 
@@ -114,18 +136,16 @@ int sched_rr_get_interval(
 {
   time_t us_per_quantum; 
 
-  /* XXX eventually should support different time quantums per thread */
+  /* XXX do we need to support different time quantums per thread */
 
-  /* XXX should get for errors? (bad pid) */
+  /*
+   *  Only supported for the "calling process" (i.e. this node).
+   */
 
-  /* XXX some of the time routines also convert usecs to a timespec -- */
-  /* XXX   should this be a common routine? */
+  assert( pid == getpid() );
 
-  us_per_quantum = _TOD_Microseconds_per_tick * _Thread_Ticks_per_timeslice;
 
-  interval->tv_sec  = us_per_quantum / TOD_MICROSECONDS_PER_SECOND;
-  interval->tv_nsec = (us_per_quantum % TOD_MICROSECONDS_PER_SECOND) * 
-                         TOD_NANOSECONDS_PER_MICROSECOND;
+  _POSIX_Interval_to_timespec( _Thread_Ticks_per_timeslice, interval );
   return 0;
 }
 

c/src/exec/posix/src/types.c

@@ -2,11 +2,20 @@
  *  $Id$
  */
 
+#include <limits.h>
+#include <errno.h>
+#include <string.h>
 #include <sys/types.h>
 
 #include <rtems/system.h>
 #include <rtems/score/object.h>
 
+pid_t _POSIX_types_Ppid = 0;
+uid_t _POSIX_types_Uid = 0;
+uid_t _POSIX_types_Euid = 0;
+gid_t _POSIX_types_Gid = 0;
+gid_t _POSIX_types_Egid = 0;
+
 /*PAGE
  *
  *  4.1.1 Get Process and Parent Process IDs, P1003.1b-1993, p. 83
@@ -24,7 +33,7 @@ pid_t getpid( void )
 
 pid_t getppid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return _POSIX_types_Ppid;
 }
 
 /*PAGE
@@ -35,7 +44,7 @@ pid_t getppid( void )
 
 uid_t getuid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return _POSIX_types_Uid;
 }
 
 /*PAGE
@@ -46,7 +55,7 @@ uid_t getuid( void )
 
 uid_t geteuid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return _POSIX_types_Euid;
 }
 
 /*PAGE
@@ -57,7 +66,7 @@ uid_t geteuid( void )
 
 gid_t getgid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return _POSIX_types_Gid;
 }
 
 /*PAGE
@@ -68,7 +77,7 @@ gid_t getgid( void )
 
 gid_t getegid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return _POSIX_types_Egid;
 }
 
 /*PAGE
@@ -80,7 +89,8 @@ int setuid(
   uid_t  uid
 )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  _POSIX_types_Uid = uid;
+  return 0;
 }
 
 /*PAGE
@@ -92,7 +102,8 @@ int setgid(
   gid_t  gid
 )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  _POSIX_types_Gid = gid;
+  return 0;
 }
 
 /*PAGE
@@ -105,7 +116,7 @@ int getgroups(
   gid_t  grouplist[]
 )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  return 0;  /* no supplemental group ids */
 }
 
 /*PAGE
@@ -115,9 +126,12 @@ int getgroups(
  *  NOTE:  P1003.1c/D10, p. 49 adds getlogin_r().
  */
 
+static char _POSIX_types_Getlogin_buffer[ LOGIN_NAME_MAX ];
+
 char *getlogin( void )
 {
-  return (char *) POSIX_NOT_IMPLEMENTED();
+  (void) getlogin_r( _POSIX_types_Getlogin_buffer, LOGIN_NAME_MAX );
+  return _POSIX_types_Getlogin_buffer;
 }
 
 /*PAGE
@@ -132,7 +146,11 @@ int getlogin_r(
   size_t  namesize
 )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  if ( namesize < LOGIN_NAME_MAX )
+    return ERANGE;
+
+  strcpy( name, "posixapp" );
+  return 0;
 }
 
 /*PAGE
@@ -142,7 +160,12 @@ int getlogin_r(
 
 pid_t getpgrp( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  /*
+   *  This always succeeds and returns the process group id.  For rtems,
+   *  this will always be the local node;
+   */
+
+  return _Objects_Local_node;
 }
 
 /*PAGE
@@ -152,7 +175,8 @@ pid_t getpgrp( void )
 
 pid_t setsid( void )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  errno = ENOSYS;
+  return -1;
 }
 
 /*PAGE
@@ -165,7 +189,8 @@ int setpgid(
   pid_t  pgid
 )
 {
-  return POSIX_NOT_IMPLEMENTED();
+  errno = ENOSYS;
+  return -1;
 }
 
 /*