/* SPDX-License-Identifier: BSD-2-Clause */

/**
 * @file
 *
 * @ingroup RTEMSTestCaseScoreMtxReqSeizeTry
 */

/*
 * Copyright (C) 2021 embedded brains GmbH (http://www.embedded-brains.de)
 *
 * 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.
 */

/*
 * This file is part of the RTEMS quality process and was automatically
 * generated.  If you find something that needs to be fixed or
 * worded better please post a report or patch to an RTEMS mailing list
 * or raise a bug report:
 *
 * https://www.rtems.org/bugs.html
 *
 * For information on updating and regenerating please refer to the How-To
 * section in the Software Requirements Engineering chapter of the
 * RTEMS Software Engineering manual.  The manual is provided as a part of
 * a release.  For development sources please refer to the online
 * documentation at:
 *
 * https://docs.rtems.org
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "tr-mtx-seize-try.h"

#include <rtems/test.h>

/**
 * @defgroup RTEMSTestCaseScoreMtxReqSeizeTry spec:/score/mtx/req/seize-try
 *
 * @ingroup RTEMSTestSuiteTestsuitesValidation0
 *
 * @{
 */

/**
 * @brief Test context for spec:/score/mtx/req/seize-try test case.
 */
typedef struct {
  /**
   * @brief If this member is true, then the calling thread shall be the owner
   *   of the mutex.
   */
  bool owner_self;;

  /**
   * @brief If this member is true, then a thread other than the calling thread
   *   shall be the owner of the mutex.
   */
  bool owner_other;;

  /**
   * @brief This member contains the current priority of the calling thread
   *   before the directive call.
   */
  rtems_task_priority priority_before;;

  /**
   * @brief This member contains the return status of the directive call.
   */
  Status_Control status;

  /**
   * @brief This member contains the owner of the mutex after the directive
   *   call.
   */
  const rtems_tcb *owner_after;

  /**
   * @brief This member contains the current priority of the calling thread
   *   after the directive call.
   */
  rtems_task_priority priority_after;;

  /**
   * @brief This member contains a copy of the corresponding
   *   ScoreMtxReqSeizeTry_Run() parameter.
   */
  TQMtxContext *tq_ctx;

  /**
   * @brief This member defines the pre-condition states for the next action.
   */
  size_t pcs[ 1 ];

  /**
   * @brief This member indicates if the test action loop is currently
   *   executed.
   */
  bool in_action_loop;
} ScoreMtxReqSeizeTry_Context;

static ScoreMtxReqSeizeTry_Context
  ScoreMtxReqSeizeTry_Instance;

static const char * const ScoreMtxReqSeizeTry_PreDesc_Owner[] = {
  "No",
  "Self",
  "Other",
  "NA"
};

static const char * const * const ScoreMtxReqSeizeTry_PreDesc[] = {
  ScoreMtxReqSeizeTry_PreDesc_Owner,
  NULL
};

typedef ScoreMtxReqSeizeTry_Context Context;

static Status_Control Status( const Context *ctx, Status_Control status )
{
  return TQConvertStatus( &ctx->tq_ctx->base, status );
}

static void ScoreMtxReqSeizeTry_Pre_Owner_Prepare(
  ScoreMtxReqSeizeTry_Context  *ctx,
  ScoreMtxReqSeizeTry_Pre_Owner state
)
{
  switch ( state ) {
    case ScoreMtxReqSeizeTry_Pre_Owner_No: {
      /*
       * While the mutex has no owner.
       */
      /* This is the default */
      break;
    }

    case ScoreMtxReqSeizeTry_Pre_Owner_Self: {
      /*
       * While the owner of the mutex is the calling thread.
       */
      ctx->owner_self = true;
      break;
    }

    case ScoreMtxReqSeizeTry_Pre_Owner_Other: {
      /*
       * While the owner of the mutex is a thread other than the calling
       * thread.
       */
      ctx->owner_other = true;
      break;
    }

    case ScoreMtxReqSeizeTry_Pre_Owner_NA:
      break;
  }
}

static void ScoreMtxReqSeizeTry_Post_Status_Check(
  ScoreMtxReqSeizeTry_Context    *ctx,
  ScoreMtxReqSeizeTry_Post_Status state
)
{
  switch ( state ) {
    case ScoreMtxReqSeizeTry_Post_Status_Ok: {
      /*
       * The return status of the directive call shall be derived from
       * STATUS_SUCCESSFUL.
       */
      T_eq_int( ctx->status, Status( ctx, STATUS_SUCCESSFUL ) );
      TQSurrender( &ctx->tq_ctx->base );
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Status_Recursive: {
      /*
       * Where the mutex supports a recursive seize, the return status of the
       * directive call shall be derived from STATUS_SUCCESSFUL.
       *
       * Where the mutex does not support a recursive seize, where a deadlock
       * is indicated by a status code, the return status of the directive call
       * shall be derived from STATUS_DEADLOCK.
       *
       * Where the mutex does not support a recursive seize, where a deadlock
       * is indicated by a fatal error, the thread queue deadlock internal
       * error shall occur.
       */
      switch ( ctx->tq_ctx->recursive ) {
        case TQ_MTX_RECURSIVE_YES:
          T_eq_int( ctx->status, Status( ctx, STATUS_SUCCESSFUL ) );
          TQSurrender( &ctx->tq_ctx->base );
          break;
        case TQ_MTX_RECURSIVE_NO_STATUS:
          T_eq_int( ctx->status, Status( ctx, STATUS_DEADLOCK ) );
          break;
        case TQ_MTX_RECURSIVE_NO_FATAL:
          /* TODO */
          T_unreachable();
          break;
        default:
          T_unreachable();
          break;
      }
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Status_Unsat: {
      /*
       * The return status of the directive call shall be derived from
       * STATUS_UNSATISFIED.
       */
      T_eq_int( ctx->status, Status( ctx, STATUS_UNSATISFIED ) );
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Status_NA:
      break;
  }
}

static void ScoreMtxReqSeizeTry_Post_Owner_Check(
  ScoreMtxReqSeizeTry_Context   *ctx,
  ScoreMtxReqSeizeTry_Post_Owner state
)
{
  switch ( state ) {
    case ScoreMtxReqSeizeTry_Post_Owner_Nop: {
      /*
       * The owner of the semaphore shall not be modified.
       */
      if ( ctx->owner_self ) {
        T_eq_ptr( ctx->owner_after, ctx->tq_ctx->base.runner_tcb );
      } else if ( ctx->owner_other ) {
        T_eq_ptr(
          ctx->owner_after,
          ctx->tq_ctx->base.worker_tcb[ TQ_BLOCKER_A ]
        );
      } else {
        T_null( ctx->owner_after );
      }
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Owner_New: {
      /*
       * The owner of the semaphore shall be the calling thread.
       */
      T_eq_ptr( ctx->owner_after, ctx->tq_ctx->base.runner_tcb );
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Owner_NA:
      break;
  }
}

static void ScoreMtxReqSeizeTry_Post_Priority_Check(
  ScoreMtxReqSeizeTry_Context      *ctx,
  ScoreMtxReqSeizeTry_Post_Priority state
)
{
  switch ( state ) {
    case ScoreMtxReqSeizeTry_Post_Priority_Nop: {
      /*
       * The current priority of the calling thread shall not be modified.
       */
      T_eq_u32( ctx->priority_after, ctx->priority_before );
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Priority_Ceiling: {
      /*
       * Where the mutex provides a priority ceiling, the calling thread shall
       * use the priority ceiling of the mutex.
       *
       * Where the mutex does not provide a priority ceiling, the current
       * priority of the calling thread shall not be modified.
       */
      if ( ctx->tq_ctx->priority_ceiling != PRIO_INVALID ) {
        T_eq_u32( ctx->priority_after, ctx->tq_ctx->priority_ceiling );
      } else {
        T_eq_u32( ctx->priority_after, ctx->priority_before );
      }
      break;
    }

    case ScoreMtxReqSeizeTry_Post_Priority_NA:
      break;
  }
}

static void ScoreMtxReqSeizeTry_Prepare( ScoreMtxReqSeizeTry_Context *ctx )
{
  ctx->owner_self = false;
  ctx->owner_other = false;
}

static void ScoreMtxReqSeizeTry_Action( ScoreMtxReqSeizeTry_Context *ctx )
{
  if ( ctx->owner_self ) {
    Status_Control status;

    status = TQEnqueue( &ctx->tq_ctx->base, TQ_NO_WAIT );
    T_eq_int( status, Status( ctx, STATUS_SUCCESSFUL ) );
  } else if ( ctx->owner_other ) {
    if ( ctx->tq_ctx->base.enqueue_variant == TQ_ENQUEUE_STICKY ) {
      TQSetScheduler(
        &ctx->tq_ctx->base,
        TQ_BLOCKER_A,
        ctx->tq_ctx->base.other_scheduler_id,
        PRIO_HIGH
      );
      TQSend(
        &ctx->tq_ctx->base,
        TQ_BLOCKER_A,
        TQ_EVENT_ENQUEUE | TQ_EVENT_RUNNER_SYNC
      );
      TQSynchronizeRunner();
    } else {
      TQSend( &ctx->tq_ctx->base, TQ_BLOCKER_A, TQ_EVENT_ENQUEUE );
    }
  }

  ctx->priority_before = GetSelfPriority();
  ctx->status = TQEnqueue( &ctx->tq_ctx->base, TQ_NO_WAIT );
  ctx->owner_after = TQMtxGetOwner( ctx->tq_ctx );
  ctx->priority_after = GetSelfPriority();

  if ( ctx->owner_self ) {
    TQSurrender( &ctx->tq_ctx->base );
  } else if ( ctx->owner_other ) {
    if ( ctx->tq_ctx->base.enqueue_variant == TQ_ENQUEUE_STICKY ) {
      TQSend(
        &ctx->tq_ctx->base,
        TQ_BLOCKER_A,
        TQ_EVENT_SURRENDER | TQ_EVENT_RUNNER_SYNC
      );
      TQSynchronizeRunner();
      TQSetScheduler(
        &ctx->tq_ctx->base,
        TQ_BLOCKER_A,
        ctx->tq_ctx->base.runner_scheduler_id,
        PRIO_HIGH
      );
    } else {
      TQSend( &ctx->tq_ctx->base, TQ_BLOCKER_A, TQ_EVENT_SURRENDER );
    }
  }
}

typedef struct {
  uint8_t Skip : 1;
  uint8_t Pre_Owner_NA : 1;
  uint8_t Post_Status : 2;
  uint8_t Post_Owner : 2;
  uint8_t Post_Priority : 2;
} ScoreMtxReqSeizeTry_Entry;

static const ScoreMtxReqSeizeTry_Entry
ScoreMtxReqSeizeTry_Entries[] = {
  { 0, 0, ScoreMtxReqSeizeTry_Post_Status_Ok,
    ScoreMtxReqSeizeTry_Post_Owner_New,
    ScoreMtxReqSeizeTry_Post_Priority_Ceiling },
  { 0, 0, ScoreMtxReqSeizeTry_Post_Status_Recursive,
    ScoreMtxReqSeizeTry_Post_Owner_Nop, ScoreMtxReqSeizeTry_Post_Priority_Nop },
  { 0, 0, ScoreMtxReqSeizeTry_Post_Status_Unsat,
    ScoreMtxReqSeizeTry_Post_Owner_Nop, ScoreMtxReqSeizeTry_Post_Priority_Nop }
};

static const uint8_t
ScoreMtxReqSeizeTry_Map[] = {
  0, 1, 2
};

static size_t ScoreMtxReqSeizeTry_Scope( void *arg, char *buf, size_t n )
{
  ScoreMtxReqSeizeTry_Context *ctx;

  ctx = arg;

  if ( ctx->in_action_loop ) {
    return T_get_scope( ScoreMtxReqSeizeTry_PreDesc, buf, n, ctx->pcs );
  }

  return 0;
}

static T_fixture ScoreMtxReqSeizeTry_Fixture = {
  .setup = NULL,
  .stop = NULL,
  .teardown = NULL,
  .scope = ScoreMtxReqSeizeTry_Scope,
  .initial_context = &ScoreMtxReqSeizeTry_Instance
};

static inline ScoreMtxReqSeizeTry_Entry ScoreMtxReqSeizeTry_GetEntry(
  size_t index
)
{
  return ScoreMtxReqSeizeTry_Entries[
    ScoreMtxReqSeizeTry_Map[ index ]
  ];
}

static T_fixture_node ScoreMtxReqSeizeTry_Node;

void ScoreMtxReqSeizeTry_Run( TQMtxContext *tq_ctx )
{
  ScoreMtxReqSeizeTry_Context *ctx;
  size_t index;

  ctx = &ScoreMtxReqSeizeTry_Instance;
  ctx->tq_ctx = tq_ctx;

  ctx = T_push_fixture(
    &ScoreMtxReqSeizeTry_Node,
    &ScoreMtxReqSeizeTry_Fixture
  );
  ctx->in_action_loop = true;
  index = 0;

  for (
    ctx->pcs[ 0 ] = ScoreMtxReqSeizeTry_Pre_Owner_No;
    ctx->pcs[ 0 ] < ScoreMtxReqSeizeTry_Pre_Owner_NA;
    ++ctx->pcs[ 0 ]
  ) {
    ScoreMtxReqSeizeTry_Entry entry;

    entry = ScoreMtxReqSeizeTry_GetEntry( index );
    ++index;

    ScoreMtxReqSeizeTry_Prepare( ctx );
    ScoreMtxReqSeizeTry_Pre_Owner_Prepare( ctx, ctx->pcs[ 0 ] );
    ScoreMtxReqSeizeTry_Action( ctx );
    ScoreMtxReqSeizeTry_Post_Status_Check( ctx, entry.Post_Status );
    ScoreMtxReqSeizeTry_Post_Owner_Check( ctx, entry.Post_Owner );
    ScoreMtxReqSeizeTry_Post_Priority_Check( ctx, entry.Post_Priority );
  }

  T_pop_fixture();
}

/** @} */