diff options
author | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 21:02:16 +0000 |
---|---|---|
committer | Joel Sherrill <joel.sherrill@OARcorp.com> | 1999-05-17 21:02:16 +0000 |
commit | c4d69e21a751d4c907db9e8f4bb9bd38693075b1 (patch) | |
tree | b12402bce88e14077b0b6926293f7121b0c27822 /cpukit/rtems/src/taskstart.c | |
parent | Thread Handler split into multiple files. Eventually, as RTEMS is (diff) | |
download | rtems-c4d69e21a751d4c907db9e8f4bb9bd38693075b1.tar.bz2 |
Split Task Manager into multiple files. Eventually this effort will
reduce the size of executables.
Diffstat (limited to 'cpukit/rtems/src/taskstart.c')
-rw-r--r-- | cpukit/rtems/src/taskstart.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/cpukit/rtems/src/taskstart.c b/cpukit/rtems/src/taskstart.c new file mode 100644 index 0000000000..45a89eba63 --- /dev/null +++ b/cpukit/rtems/src/taskstart.c @@ -0,0 +1,85 @@ +/* + * RTEMS Task Manager + * + * + * COPYRIGHT (c) 1989-1998. + * On-Line Applications Research Corporation (OAR). + * Copyright assigned to U.S. Government, 1994. + * + * The license and distribution terms for this file may be + * found in the file LICENSE in this distribution or at + * http://www.OARcorp.com/rtems/license.html. + * + * $Id$ + */ + +#include <rtems/system.h> +#include <rtems/rtems/status.h> +#include <rtems/rtems/support.h> +#include <rtems/rtems/modes.h> +#include <rtems/score/object.h> +#include <rtems/score/stack.h> +#include <rtems/score/states.h> +#include <rtems/rtems/tasks.h> +#include <rtems/score/thread.h> +#include <rtems/score/threadq.h> +#include <rtems/score/tod.h> +#include <rtems/score/userext.h> +#include <rtems/score/wkspace.h> +#include <rtems/score/apiext.h> +#include <rtems/score/sysstate.h> + +/*PAGE + * + * rtems_task_start + * + * This directive readies the thread identified by the "id" + * based on its current priorty, to await execution. A thread + * can be started only from the dormant state. + * + * Input parameters: + * id - thread id + * entry_point - start execution address of thread + * argument - thread argument + * + * Output parameters: + * RTEMS_SUCCESSFUL - if successful + * error code - if unsuccessful + */ + +rtems_status_code rtems_task_start( + rtems_id id, + rtems_task_entry entry_point, + unsigned32 argument +) +{ + register Thread_Control *the_thread; + Objects_Locations location; + + if ( entry_point == NULL ) + return RTEMS_INVALID_ADDRESS; + + the_thread = _Thread_Get( id, &location ); + switch ( location ) { + + case OBJECTS_REMOTE: +#if defined(RTEMS_MULTIPROCESSING) + _Thread_Dispatch(); + return RTEMS_ILLEGAL_ON_REMOTE_OBJECT; +#endif + + case OBJECTS_ERROR: + return RTEMS_INVALID_ID; + + case OBJECTS_LOCAL: + if ( _Thread_Start( + the_thread, THREAD_START_NUMERIC, entry_point, NULL, argument ) ) { + _Thread_Enable_dispatch(); + return RTEMS_SUCCESSFUL; + } + _Thread_Enable_dispatch(); + return RTEMS_INCORRECT_STATE; + } + + return RTEMS_INTERNAL_ERROR; /* unreached - only to remove warnings */ +} |