diff options
Diffstat (limited to 'cpukit/posix/src/pthreadcreate.c')
| -rw-r--r-- | cpukit/posix/src/pthreadcreate.c | 61 |
1 files changed, 56 insertions, 5 deletions
diff --git a/cpukit/posix/src/pthreadcreate.c b/cpukit/posix/src/pthreadcreate.c index 9474d07032..6b28b371bc 100644 --- a/cpukit/posix/src/pthreadcreate.c +++ b/cpukit/posix/src/pthreadcreate.c @@ -1,3 +1,5 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ + /** * @file * @@ -14,9 +16,26 @@ * COPYRIGHT (c) 1989-2014. * On-Line Applications Research Corporation (OAR). * - * The license and distribution terms for this file may be - * found in the file LICENSE in this distribution or at - * http://www.rtems.org/license/LICENSE. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. */ #ifdef HAVE_CONFIG_H @@ -34,9 +53,11 @@ #include <rtems/posix/pthreadimpl.h> #include <rtems/posix/pthreadattrimpl.h> #include <rtems/score/assert.h> +#include <rtems/score/threadcpubudget.h> #include <rtems/score/threadimpl.h> #include <rtems/score/apimutex.h> #include <rtems/score/stackimpl.h> +#include <rtems/score/statesimpl.h> #include <rtems/score/schedulerimpl.h> #include <rtems/score/userextimpl.h> #include <rtems/sysinit.h> @@ -348,7 +369,9 @@ void _POSIX_Threads_Sporadic_timer( Watchdog_Control *watchdog ) _Thread_Priority_update( &queue_context ); } -void _POSIX_Threads_Sporadic_budget_callout( Thread_Control *the_thread ) +static void _POSIX_Threads_Sporadic_budget_callout( + Thread_Control *the_thread +) { POSIX_API_Control *api; Thread_queue_Context queue_context; @@ -363,7 +386,7 @@ void _POSIX_Threads_Sporadic_budget_callout( Thread_Control *the_thread ) * This will prevent the thread from consuming its entire "budget" * while at low priority. */ - the_thread->cpu_time_budget = UINT32_MAX; + the_thread->CPU_budget.available = UINT32_MAX; if ( !_Priority_Node_is_active( &api->Sporadic.Low_priority ) ) { _Thread_Priority_add( @@ -382,6 +405,34 @@ void _POSIX_Threads_Sporadic_budget_callout( Thread_Control *the_thread ) _Thread_Priority_update( &queue_context ); } +static void _POSIX_Threads_Sporadic_budget_at_tick( Thread_Control *the_thread ) +{ + uint32_t budget_available; + + if ( !the_thread->is_preemptible ) { + return; + } + + if ( !_States_Is_ready( the_thread->current_state ) ) { + return; + } + + budget_available = the_thread->CPU_budget.available; + + if ( budget_available == 1 ) { + the_thread->CPU_budget.available = 0; + _POSIX_Threads_Sporadic_budget_callout ( the_thread ); + } else { + the_thread->CPU_budget.available = budget_available - 1; + } +} + +const Thread_CPU_budget_operations _POSIX_Threads_Sporadic_budget = { + .at_tick = _POSIX_Threads_Sporadic_budget_at_tick, + .at_context_switch = _Thread_CPU_budget_do_nothing, + .initialize = _Thread_CPU_budget_do_nothing +}; + static bool _POSIX_Threads_Create_extension( Thread_Control *executing, Thread_Control *created |