source: rtems/cpukit/include/rtems/posix/pthreadimpl.h @ 21275b58

Last change on this file since 21275b58 was 21275b58, checked in by Sebastian Huber <sebastian.huber@…>, on Nov 22, 2018 at 6:14:51 PM

score: Static Objects_Information initialization

Statically allocate the objects information together with the initial
set of objects either via <rtems/confdefs.h>. Provide default object
informations with zero objects via librtemscpu.a. This greatly
simplifies the workspace size estimate. RTEMS applications which do not
use the unlimited objects option are easier to debug since all objects
reside now in statically allocated objects of the right types.

Close #3621.

  • Property mode set to 100644
File size: 3.0 KB
Line 
1/**
2 * @file
3 *
4 * @brief POSIX Threads Private Support
5 *
6 * This include file contains all the private support information for
7 * POSIX threads.
8 */
9
10/*
11 *  COPYRIGHT (c) 1989-2011.
12 *  On-Line Applications Research Corporation (OAR).
13 *
14 *  The license and distribution terms for this file may be
15 *  found in the file LICENSE in this distribution or at
16 *  http://www.rtems.org/license/LICENSE.
17 */
18
19#ifndef _RTEMS_POSIX_PTHREADIMPL_H
20#define _RTEMS_POSIX_PTHREADIMPL_H
21
22#include <rtems/posix/pthread.h>
23#include <rtems/posix/config.h>
24#include <rtems/posix/threadsup.h>
25#include <rtems/score/assert.h>
26#include <rtems/score/objectimpl.h>
27#include <rtems/score/timespec.h>
28#include <rtems/score/threadimpl.h>
29#include <rtems/score/watchdogimpl.h>
30
31#ifdef __cplusplus
32extern "C" {
33#endif
34
35/**
36 * @addtogroup POSIX_PTHREAD
37 */
38/**@{**/
39
40/**
41 * The following sets the minimum stack size for POSIX threads.
42 */
43#define PTHREAD_MINIMUM_STACK_SIZE _Configuration_POSIX_Minimum_stack_size
44
45#if defined(RTEMS_POSIX_API)
46RTEMS_INLINE_ROUTINE void _POSIX_Threads_Sporadic_timer_insert(
47  Thread_Control    *the_thread,
48  POSIX_API_Control *api
49)
50{
51  the_thread->cpu_time_budget =
52    _Timespec_To_ticks( &api->Sporadic.sched_ss_init_budget );
53
54  _Watchdog_Per_CPU_insert_ticks(
55    &api->Sporadic.Timer,
56    _Per_CPU_Get(),
57    _Timespec_To_ticks( &api->Sporadic.sched_ss_repl_period )
58  );
59}
60#endif
61
62void _POSIX_Threads_Sporadic_timer( Watchdog_Control *watchdog );
63
64/**
65 * @brief POSIX threads sporadic budget callout.
66 *
67 * This routine handles the sporadic scheduling algorithm.
68 *
69 * @param[in] the_thread is a pointer to the thread whose budget
70 * has been exceeded.
71 */
72void _POSIX_Threads_Sporadic_budget_callout(
73  Thread_Control *the_thread
74);
75
76int _POSIX_Thread_Translate_to_sched_policy(
77  Thread_CPU_budget_algorithms budget_algorithm
78);
79
80/**
81 * @brief Translate sched_param into SuperCore terms.
82 *
83 * This method translates the POSIX API sched_param into the corresponding
84 * SuperCore settings.
85 *
86 * @param[in] policy is the POSIX scheduling policy
87 * @param[in] param points to the scheduling parameter structure
88 * @param[in] budget_algorithm points to the output CPU Budget algorithm
89 * @param[in] budget_callout points to the output CPU Callout
90 *
91 * @retval 0 Indicates success.
92 * @retval error_code POSIX error code indicating failure.
93 */
94int _POSIX_Thread_Translate_sched_param(
95  int                                  policy,
96  const struct sched_param            *param,
97  Thread_CPU_budget_algorithms        *budget_algorithm,
98  Thread_CPU_budget_algorithm_callout *budget_callout
99);
100
101RTEMS_INLINE_ROUTINE Thread_Control *_POSIX_Threads_Allocate(void)
102{
103  _Objects_Allocator_lock();
104
105  _Thread_Kill_zombies();
106
107  return (Thread_Control *)
108    _Objects_Allocate_unprotected( &_POSIX_Threads_Information.Objects );
109}
110
111RTEMS_INLINE_ROUTINE void _POSIX_Threads_Free (
112  Thread_Control *the_pthread
113)
114{
115  _Objects_Free( &_POSIX_Threads_Information.Objects, &the_pthread->Object );
116}
117
118/** @} */
119
120#ifdef __cplusplus
121}
122#endif
123
124#endif
125/*  end of include file */
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