575 lines
15 KiB
C
Executable File
575 lines
15 KiB
C
Executable File
/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "los_mux_pri.h"
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#include "los_bitmap.h"
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#include "los_spinlock.h"
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#include "los_mp.h"
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#include "los_task_pri.h"
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#include "los_exc.h"
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#include "los_sched_pri.h"
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#ifdef __cplusplus
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#if __cplusplus
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extern "C" {
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#endif
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#endif /* __cplusplus */
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#if (LOSCFG_BASE_IPC_MUX == YES)
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#define MUTEXATTR_TYPE_MASK 0x0FU
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrInit(LosMuxAttr *attr)
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{
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if (attr == NULL) {
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return LOS_EINVAL;
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}
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attr->protocol = LOS_MUX_PRIO_INHERIT;
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attr->prioceiling = OS_TASK_PRIORITY_LOWEST;
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attr->type = LOS_MUX_DEFAULT;
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrDestroy(LosMuxAttr *attr)
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{
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if (attr == NULL) {
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return LOS_EINVAL;
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}
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrGetType(const LosMuxAttr *attr, INT32 *outType)
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{
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INT32 type;
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if ((attr == NULL) || (outType == NULL)) {
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return LOS_EINVAL;
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}
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type = (INT32)(attr->type & MUTEXATTR_TYPE_MASK);
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if ((type < LOS_MUX_NORMAL) || (type > LOS_MUX_ERRORCHECK)) {
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return LOS_EINVAL;
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}
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*outType = type;
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrSetType(LosMuxAttr *attr, INT32 type)
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{
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if ((attr == NULL) || (type < LOS_MUX_NORMAL) || (type > LOS_MUX_ERRORCHECK)) {
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return LOS_EINVAL;
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}
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attr->type = (UINT8)((attr->type & ~MUTEXATTR_TYPE_MASK) | (UINT32)type);
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrGetProtocol(const LosMuxAttr *attr, INT32 *protocol)
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{
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if ((attr != NULL) && (protocol != NULL)) {
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*protocol = attr->protocol;
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} else {
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return LOS_EINVAL;
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}
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrSetProtocol(LosMuxAttr *attr, INT32 protocol)
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{
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if (attr == NULL) {
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return LOS_EINVAL;
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}
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switch (protocol) {
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case LOS_MUX_PRIO_NONE:
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case LOS_MUX_PRIO_INHERIT:
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case LOS_MUX_PRIO_PROTECT:
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attr->protocol = (UINT8)protocol;
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return LOS_OK;
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default:
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return LOS_EINVAL;
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}
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrGetPrioceiling(const LosMuxAttr *attr, INT32 *prioceiling)
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{
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if (attr == NULL) {
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return LOS_EINVAL;
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}
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if (prioceiling != NULL) {
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*prioceiling = attr->prioceiling;
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}
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxAttrSetPrioceiling(LosMuxAttr *attr, INT32 prioceiling)
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{
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if ((attr == NULL) ||
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(prioceiling < OS_TASK_PRIORITY_HIGHEST) ||
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(prioceiling > OS_TASK_PRIORITY_LOWEST)) {
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return LOS_EINVAL;
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}
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attr->prioceiling = (UINT8)prioceiling;
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxSetPrioceiling(LosMux *mutex, INT32 prioceiling, INT32 *oldPrioceiling)
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{
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INT32 ret;
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INT32 retLock;
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if ((mutex == NULL) ||
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(prioceiling < OS_TASK_PRIORITY_HIGHEST) ||
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(prioceiling > OS_TASK_PRIORITY_LOWEST)) {
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return LOS_EINVAL;
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}
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retLock = LOS_MuxLock(mutex, LOS_WAIT_FOREVER);
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if (retLock != LOS_OK) {
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return retLock;
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}
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if (oldPrioceiling != NULL) {
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*oldPrioceiling = mutex->attr.prioceiling;
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}
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ret = LOS_MuxAttrSetPrioceiling(&mutex->attr, prioceiling);
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retLock = LOS_MuxUnlock(mutex);
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if ((ret == LOS_OK) && (retLock != LOS_OK)) {
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return retLock;
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}
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return ret;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxGetPrioceiling(const LosMux *mutex, INT32 *prioceiling)
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{
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if ((mutex != NULL) && (prioceiling != NULL) && (mutex->magic == OS_MUX_MAGIC)) {
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*prioceiling = mutex->attr.prioceiling;
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return LOS_OK;
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}
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return LOS_EINVAL;
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}
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LITE_OS_SEC_TEXT BOOL LOS_MuxIsValid(const LosMux *mutex)
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{
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if ((mutex != NULL) && (mutex->magic == OS_MUX_MAGIC)) {
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return TRUE;
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}
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return FALSE;
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}
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STATIC UINT32 OsCheckMutexAttr(const LosMuxAttr *attr)
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{
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if (((INT8)(attr->type) < LOS_MUX_NORMAL) || (attr->type > LOS_MUX_ERRORCHECK)) {
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return LOS_NOK;
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}
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if (((INT8)(attr->prioceiling) < OS_TASK_PRIORITY_HIGHEST) || (attr->prioceiling > OS_TASK_PRIORITY_LOWEST)) {
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return LOS_NOK;
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}
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if (((INT8)(attr->protocol) < LOS_MUX_PRIO_NONE) || (attr->protocol > LOS_MUX_PRIO_PROTECT)) {
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return LOS_NOK;
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}
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxInit(LosMux *mutex, const LosMuxAttr *attr)
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{
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UINT32 intSave;
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if (mutex == NULL) {
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return LOS_EINVAL;
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}
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if (attr == NULL) {
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(VOID)LOS_MuxAttrInit(&mutex->attr);
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} else {
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(VOID)memcpy_s(&mutex->attr, sizeof(LosMuxAttr), attr, sizeof(LosMuxAttr));
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}
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if (OsCheckMutexAttr(&mutex->attr) != LOS_OK) {
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return LOS_EINVAL;
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}
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SCHEDULER_LOCK(intSave);
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mutex->muxCount = 0;
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mutex->owner = NULL;
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LOS_ListInit(&mutex->muxList);
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mutex->magic = OS_MUX_MAGIC;
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SCHEDULER_UNLOCK(intSave);
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return LOS_OK;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxDestroy(LosMux *mutex)
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{
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UINT32 intSave;
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if (mutex == NULL) {
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return LOS_EINVAL;
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}
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SCHEDULER_LOCK(intSave);
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if (mutex->magic != OS_MUX_MAGIC) {
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SCHEDULER_UNLOCK(intSave);
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return LOS_EBADF;
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}
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if (mutex->muxCount != 0) {
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SCHEDULER_UNLOCK(intSave);
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return LOS_EBUSY;
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}
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(VOID)memset_s(mutex, sizeof(LosMux), 0, sizeof(LosMux));
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SCHEDULER_UNLOCK(intSave);
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return LOS_OK;
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}
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STATIC VOID OsMuxBitmapSet(const LosMux *mutex, const LosTaskCB *runTask, LosTaskCB *owner)
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{
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if ((owner->priority > runTask->priority) && (mutex->attr.protocol == LOS_MUX_PRIO_INHERIT)) {
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LOS_BitmapSet(&(owner->priBitMap), owner->priority);
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(VOID)OsSchedModifyTaskSchedParam(owner, owner->policy, runTask->priority);
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}
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}
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VOID OsMuxBitmapRestore(const LosMux *mutex, const LosTaskCB *taskCB, LosTaskCB *owner)
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{
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UINT16 bitMapPri;
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if (mutex->attr.protocol != LOS_MUX_PRIO_INHERIT) {
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return;
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}
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if (owner->priority >= taskCB->priority) {
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bitMapPri = LOS_LowBitGet(owner->priBitMap);
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if (bitMapPri != LOS_INVALID_BIT_INDEX) {
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LOS_BitmapClr(&(owner->priBitMap), bitMapPri);
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OsSchedModifyTaskSchedParam(owner, owner->policy, bitMapPri);
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}
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} else {
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if (LOS_HighBitGet(owner->priBitMap) != taskCB->priority) {
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LOS_BitmapClr(&(owner->priBitMap), taskCB->priority);
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}
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}
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}
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STATIC UINT32 OsMuxPendOp(LosTaskCB *runTask, LosMux *mutex, UINT32 timeout)
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{
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UINT32 ret;
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LOS_DL_LIST *node = NULL;
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LosTaskCB *owner = NULL;
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if ((mutex->muxList.pstPrev == NULL) || (mutex->muxList.pstNext == NULL)) {
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/* This is for mutex macro initialization. */
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mutex->muxCount = 0;
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mutex->owner = NULL;
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LOS_ListInit(&mutex->muxList);
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}
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if (mutex->muxCount == 0) {
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mutex->muxCount++;
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mutex->owner = (VOID *)runTask;
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LOS_ListTailInsert(&runTask->lockList, &mutex->holdList);
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if ((mutex->attr.protocol == LOS_MUX_PRIO_PROTECT) && (runTask->priority > mutex->attr.prioceiling)) {
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LOS_BitmapSet(&runTask->priBitMap, runTask->priority);
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(VOID)OsSchedModifyTaskSchedParam(runTask, runTask->policy, mutex->attr.prioceiling);
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}
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return LOS_OK;
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}
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if (((LosTaskCB *)mutex->owner == runTask) && (mutex->attr.type == LOS_MUX_RECURSIVE)) {
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mutex->muxCount++;
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return LOS_OK;
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}
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if (!timeout) {
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return LOS_EINVAL;
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}
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if (!OsPreemptableInSched()) {
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return LOS_EDEADLK;
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}
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OsMuxBitmapSet(mutex, runTask, (LosTaskCB *)mutex->owner);
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owner = (LosTaskCB *)mutex->owner;
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runTask->taskMux = (VOID *)mutex;
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node = OsSchedLockPendFindPos(runTask, &mutex->muxList);
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if (node == NULL) {
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ret = LOS_NOK;
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return ret;
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}
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OsTaskWaitSetPendMask(OS_TASK_WAIT_MUTEX, (UINTPTR)mutex, timeout);
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ret = OsSchedTaskWait(node, timeout, TRUE);
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if (ret == LOS_ERRNO_TSK_TIMEOUT) {
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runTask->taskMux = NULL;
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ret = LOS_ETIMEDOUT;
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}
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if (timeout != LOS_WAIT_FOREVER) {
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OsMuxBitmapRestore(mutex, runTask, owner);
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}
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return ret;
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}
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UINT32 OsMuxLockUnsafe(LosMux *mutex, UINT32 timeout)
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{
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LosTaskCB *runTask = OsCurrTaskGet();
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if (mutex->magic != OS_MUX_MAGIC) {
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return LOS_EBADF;
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}
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if (OsCheckMutexAttr(&mutex->attr) != LOS_OK) {
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return LOS_EINVAL;
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}
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if ((mutex->attr.type == LOS_MUX_ERRORCHECK) && (mutex->owner == (VOID *)runTask)) {
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return LOS_EDEADLK;
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}
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return OsMuxPendOp(runTask, mutex, timeout);
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}
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UINT32 OsMuxTrylockUnsafe(LosMux *mutex, UINT32 timeout)
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{
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LosTaskCB *runTask = OsCurrTaskGet();
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if (mutex->magic != OS_MUX_MAGIC) {
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return LOS_EBADF;
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}
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if (OsCheckMutexAttr(&mutex->attr) != LOS_OK) {
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return LOS_EINVAL;
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}
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if ((mutex->owner != NULL) &&
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(((LosTaskCB *)mutex->owner != runTask) || (mutex->attr.type != LOS_MUX_RECURSIVE))) {
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return LOS_EBUSY;
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}
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return OsMuxPendOp(runTask, mutex, timeout);
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxLock(LosMux *mutex, UINT32 timeout)
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{
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LosTaskCB *runTask = NULL;
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UINT32 intSave;
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UINT32 ret;
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if (mutex == NULL) {
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return LOS_EINVAL;
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}
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if (OS_INT_ACTIVE) {
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return LOS_EINTR;
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}
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runTask = (LosTaskCB *)OsCurrTaskGet();
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/* DO NOT Call blocking API in system tasks */
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if (runTask->taskStatus & OS_TASK_FLAG_SYSTEM_TASK) {
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PRINTK("Warning: DO NOT call %s in system tasks.\n", __FUNCTION__);
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OsBackTrace();
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}
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SCHEDULER_LOCK(intSave);
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ret = OsMuxLockUnsafe(mutex, timeout);
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SCHEDULER_UNLOCK(intSave);
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return ret;
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}
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LITE_OS_SEC_TEXT UINT32 LOS_MuxTrylock(LosMux *mutex)
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{
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LosTaskCB *runTask = NULL;
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UINT32 intSave;
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UINT32 ret;
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if (mutex == NULL) {
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return LOS_EINVAL;
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}
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if (OS_INT_ACTIVE) {
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return LOS_EINTR;
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}
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runTask = (LosTaskCB *)OsCurrTaskGet();
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/* DO NOT Call blocking API in system tasks */
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if (runTask->taskStatus & OS_TASK_FLAG_SYSTEM_TASK) {
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PRINTK("Warning: DO NOT call %s in system tasks.\n", __FUNCTION__);
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OsBackTrace();
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}
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SCHEDULER_LOCK(intSave);
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ret = OsMuxTrylockUnsafe(mutex, 0);
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SCHEDULER_UNLOCK(intSave);
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return ret;
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}
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STATIC VOID OsMuxPostOpSub(LosTaskCB *taskCB, LosMux *mutex)
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{
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LosTaskCB *pendedTask = NULL;
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UINT16 bitMapPri;
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if (!LOS_ListEmpty(&mutex->muxList)) {
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bitMapPri = LOS_HighBitGet(taskCB->priBitMap);
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LOS_DL_LIST_FOR_EACH_ENTRY(pendedTask, (&mutex->muxList), LosTaskCB, pendList) {
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if (bitMapPri != pendedTask->priority) {
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LOS_BitmapClr(&taskCB->priBitMap, pendedTask->priority);
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}
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}
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}
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bitMapPri = LOS_LowBitGet(taskCB->priBitMap);
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LOS_BitmapClr(&taskCB->priBitMap, bitMapPri);
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(VOID)OsSchedModifyTaskSchedParam((LosTaskCB *)mutex->owner, ((LosTaskCB *)mutex->owner)->policy, bitMapPri);
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}
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STATIC UINT32 OsMuxPostOp(LosTaskCB *taskCB, LosMux *mutex, BOOL *needSched)
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{
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LosTaskCB *resumedTask = NULL;
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if (LOS_ListEmpty(&mutex->muxList)) {
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LOS_ListDelete(&mutex->holdList);
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mutex->owner = NULL;
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return LOS_OK;
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}
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resumedTask = OS_TCB_FROM_PENDLIST(LOS_DL_LIST_FIRST(&(mutex->muxList)));
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if (mutex->attr.protocol == LOS_MUX_PRIO_INHERIT) {
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if (resumedTask->priority > taskCB->priority) {
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if (LOS_HighBitGet(taskCB->priBitMap) != resumedTask->priority) {
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LOS_BitmapClr(&taskCB->priBitMap, resumedTask->priority);
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}
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} else if (taskCB->priBitMap != 0) {
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OsMuxPostOpSub(taskCB, mutex);
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}
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}
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mutex->muxCount = 1;
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mutex->owner = (VOID *)resumedTask;
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LOS_ListDelete(&mutex->holdList);
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LOS_ListTailInsert(&resumedTask->lockList, &mutex->holdList);
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OsTaskWakeClearPendMask(resumedTask);
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OsSchedTaskWake(resumedTask);
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resumedTask->taskMux = NULL;
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if (needSched != NULL) {
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*needSched = TRUE;
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}
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return LOS_OK;
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}
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UINT32 OsMuxUnlockUnsafe(LosTaskCB *taskCB, LosMux *mutex, BOOL *needSched)
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{
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UINT16 bitMapPri;
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if (mutex->magic != OS_MUX_MAGIC) {
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return LOS_EBADF;
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}
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if (OsCheckMutexAttr(&mutex->attr) != LOS_OK) {
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return LOS_EINVAL;
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}
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if ((LosTaskCB *)mutex->owner != taskCB) {
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return LOS_EPERM;
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}
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if (mutex->muxCount == 0) {
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return LOS_EPERM;
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}
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if ((--mutex->muxCount != 0) && (mutex->attr.type == LOS_MUX_RECURSIVE)) {
|
|
return LOS_OK;
|
|
}
|
|
|
|
if (mutex->attr.protocol == LOS_MUX_PRIO_PROTECT) {
|
|
bitMapPri = LOS_HighBitGet(taskCB->priBitMap);
|
|
if (bitMapPri != LOS_INVALID_BIT_INDEX) {
|
|
LOS_BitmapClr(&taskCB->priBitMap, bitMapPri);
|
|
(VOID)OsSchedModifyTaskSchedParam(taskCB, taskCB->policy, bitMapPri);
|
|
}
|
|
}
|
|
|
|
/* Whether a task block the mutex lock. */
|
|
return OsMuxPostOp(taskCB, mutex, needSched);
|
|
}
|
|
|
|
LITE_OS_SEC_TEXT UINT32 LOS_MuxUnlock(LosMux *mutex)
|
|
{
|
|
LosTaskCB *runTask = NULL;
|
|
BOOL needSched = FALSE;
|
|
UINT32 intSave;
|
|
UINT32 ret;
|
|
|
|
if (mutex == NULL) {
|
|
return LOS_EINVAL;
|
|
}
|
|
|
|
if (OS_INT_ACTIVE) {
|
|
return LOS_EINTR;
|
|
}
|
|
|
|
runTask = (LosTaskCB *)OsCurrTaskGet();
|
|
/* DO NOT Call blocking API in system tasks */
|
|
if (runTask->taskStatus & OS_TASK_FLAG_SYSTEM_TASK) {
|
|
PRINTK("Warning: DO NOT call %s in system tasks.\n", __FUNCTION__);
|
|
OsBackTrace();
|
|
}
|
|
|
|
SCHEDULER_LOCK(intSave);
|
|
ret = OsMuxUnlockUnsafe(runTask, mutex, &needSched);
|
|
SCHEDULER_UNLOCK(intSave);
|
|
if (needSched == TRUE) {
|
|
LOS_MpSchedule(OS_MP_CPU_ALL);
|
|
LOS_Schedule();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#endif /* (LOSCFG_BASE_IPC_MUX == YES) */
|
|
|
|
#ifdef __cplusplus
|
|
#if __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* __cplusplus */
|