los_ipclimit.c 7.4 KB
Newer Older
Z
zhushengle 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
/*
 * Copyright (c) 2023-2023 Huawei Device Co., Ltd. All rights reserved.
 *
 * 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.
 *
 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without specific prior written
 *    permission.
 *
 * 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 HOLDER 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.
 */

#include "los_ipclimit.h"
#include "los_process_pri.h"

#ifdef LOSCFG_KERNEL_IPC_PLIMIT
STATIC ProcIPCLimit *g_rootIPCLimit = NULL;
#define PLIMIT_IPC_SHM_LIMIT_MAX 104857600

VOID OsIPCLimitInit(UINTPTR limite)
{
    ProcIPCLimit *plimite = (ProcIPCLimit *)limite;
    plimite->mqCountLimit = LOSCFG_BASE_IPC_QUEUE_LIMIT;
    plimite->shmSizeLimit = PLIMIT_IPC_SHM_LIMIT_MAX;
    g_rootIPCLimit = plimite;
}

VOID *OsIPCLimitAlloc(VOID)
{
    ProcIPCLimit *plimite = (ProcIPCLimit *)LOS_KernelMalloc(sizeof(ProcIPCLimit));
    if (plimite == NULL) {
        return NULL;
    }
    (VOID)memset_s(plimite, sizeof(ProcIPCLimit), 0, sizeof(ProcIPCLimit));
    return (VOID *)plimite;
}

VOID OsIPCLimitFree(UINTPTR limite)
{
    ProcIPCLimit *plimite = (ProcIPCLimit *)limite;
    if (plimite == NULL) {
        return;
    }

Z
zhushengle 已提交
63
    LOS_KernelFree((VOID *)plimite);
Z
zhushengle 已提交
64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249
}

VOID OsIPCLimitCopy(UINTPTR dest, UINTPTR src)
{
    ProcIPCLimit *plimiteDest = (ProcIPCLimit *)dest;
    ProcIPCLimit *plimiteSrc = (ProcIPCLimit *)src;
    plimiteDest->mqCountLimit = plimiteSrc->mqCountLimit;
    plimiteDest->shmSizeLimit = plimiteSrc->shmSizeLimit;
    return;
}

BOOL OsIPCLimiteMigrateCheck(UINTPTR curr, UINTPTR parent)
{
    ProcIPCLimit *currIpcLimit = (ProcIPCLimit *)curr;
    ProcIPCLimit *parentIpcLimit = (ProcIPCLimit *)parent;
    if ((currIpcLimit->mqCount + parentIpcLimit->mqCount) >= parentIpcLimit->mqCountLimit) {
        return FALSE;
    }

    if ((currIpcLimit->shmSize + parentIpcLimit->shmSize) >= parentIpcLimit->shmSizeLimit) {
        return FALSE;
    }
    return TRUE;
}

VOID OsIPCLimitMigrate(UINTPTR currLimit, UINTPTR parentLimit, UINTPTR process)
{
    ProcIPCLimit *currIpcLimit = (ProcIPCLimit *)currLimit;
    ProcIPCLimit *parentIpcLimit = (ProcIPCLimit *)parentLimit;
    LosProcessCB *pcb = (LosProcessCB *)process;

    if (pcb == NULL) {
        parentIpcLimit->mqCount += currIpcLimit->mqCount;
        parentIpcLimit->mqFailedCount += currIpcLimit->mqFailedCount;
        parentIpcLimit->shmSize += currIpcLimit->shmSize;
        parentIpcLimit->shmFailedCount += currIpcLimit->shmFailedCount;
        return;
    }

    parentIpcLimit->mqCount -= pcb->limitStat.mqCount;
    parentIpcLimit->shmSize -= pcb->limitStat.shmSize;
    currIpcLimit->mqCount += pcb->limitStat.mqCount;
    currIpcLimit->shmSize += pcb->limitStat.shmSize;
}

BOOL OsIPCLimitAddProcessCheck(UINTPTR limit, UINTPTR process)
{
    ProcIPCLimit *ipcLimit = (ProcIPCLimit *)limit;
    LosProcessCB *pcb = (LosProcessCB *)process;
    if ((ipcLimit->mqCount + pcb->limitStat.mqCount) >= ipcLimit->mqCountLimit) {
        return FALSE;
    }

    if ((ipcLimit->shmSize + pcb->limitStat.shmSize) >= ipcLimit->shmSizeLimit) {
        return FALSE;
    }

    return TRUE;
}

VOID OsIPCLimitAddProcess(UINTPTR limit, UINTPTR process)
{
    LosProcessCB *pcb = (LosProcessCB *)process;
    ProcIPCLimit *plimits = (ProcIPCLimit *)limit;
    plimits->mqCount += pcb->limitStat.mqCount;
    plimits->shmSize += pcb->limitStat.shmSize;
    return;
}

VOID OsIPCLimitDelProcess(UINTPTR limit, UINTPTR process)
{
    LosProcessCB *pcb = (LosProcessCB *)process;
    ProcIPCLimit *plimits = (ProcIPCLimit *)limit;

    plimits->mqCount -= pcb->limitStat.mqCount;
    plimits->shmSize -= pcb->limitStat.shmSize;
    return;
}

UINT32 OsIPCLimitSetMqLimit(ProcIPCLimit *ipcLimit, UINT32 value)
{
    UINT32 intSave;

    if ((ipcLimit == NULL) || (value == 0) || (value > LOSCFG_BASE_IPC_QUEUE_LIMIT)) {
        return EINVAL;
    }

    if (ipcLimit == g_rootIPCLimit) {
        return EPERM;
    }

    SCHEDULER_LOCK(intSave);
    if (value < ipcLimit->mqCount) {
        SCHEDULER_UNLOCK(intSave);
        return EINVAL;
    }

    ipcLimit->mqCountLimit = value;
    SCHEDULER_UNLOCK(intSave);
    return LOS_OK;
}

UINT32 OsIPCLimitSetShmLimit(ProcIPCLimit *ipcLimit, UINT32 value)
{
    UINT32 intSave;

    if ((ipcLimit == NULL) || (value == 0) || (value > PLIMIT_IPC_SHM_LIMIT_MAX)) {
        return EINVAL;
    }

    if (ipcLimit == g_rootIPCLimit) {
        return EPERM;
    }

    SCHEDULER_LOCK(intSave);
    if (value < ipcLimit->shmSize) {
        SCHEDULER_UNLOCK(intSave);
        return EINVAL;
    }

    ipcLimit->shmSizeLimit = value;
    SCHEDULER_UNLOCK(intSave);
    return LOS_OK;
}

UINT32 OsIPCLimitMqAlloc(VOID)
{
    UINT32 intSave;
    SCHEDULER_LOCK(intSave);
    LosProcessCB *run = OsCurrProcessGet();
    ProcIPCLimit *ipcLimit = (ProcIPCLimit *)run->plimits->limitsList[PROCESS_LIMITER_ID_IPC];
    if (ipcLimit->mqCount >= ipcLimit->mqCountLimit) {
        ipcLimit->mqFailedCount++;
        SCHEDULER_UNLOCK(intSave);
        return EINVAL;
    }

    run->limitStat.mqCount++;
    ipcLimit->mqCount++;
    SCHEDULER_UNLOCK(intSave);
    return LOS_OK;
}

VOID OsIPCLimitMqFree(VOID)
{
    UINT32 intSave;
    SCHEDULER_LOCK(intSave);
    LosProcessCB *run = OsCurrProcessGet();
    ProcIPCLimit *ipcLimit = (ProcIPCLimit *)run->plimits->limitsList[PROCESS_LIMITER_ID_IPC];
    ipcLimit->mqCount--;
    run->limitStat.mqCount--;
    SCHEDULER_UNLOCK(intSave);
    return;
}

UINT32 OsIPCLimitShmAlloc(UINT32 size)
{
    UINT32 intSave;
    SCHEDULER_LOCK(intSave);
    LosProcessCB *run = OsCurrProcessGet();
    ProcIPCLimit *ipcLimit = (ProcIPCLimit *)run->plimits->limitsList[PROCESS_LIMITER_ID_IPC];
    if ((ipcLimit->shmSize + size) >= ipcLimit->shmSizeLimit) {
        ipcLimit->shmFailedCount++;
        SCHEDULER_UNLOCK(intSave);
        return EINVAL;
    }

    run->limitStat.shmSize += size;
    ipcLimit->shmSize += size;
    SCHEDULER_UNLOCK(intSave);
    return LOS_OK;
}

VOID OsIPCLimitShmFree(UINT32 size)
{
    UINT32 intSave;
    SCHEDULER_LOCK(intSave);
    LosProcessCB *run = OsCurrProcessGet();
    ProcIPCLimit *ipcLimit = (ProcIPCLimit *)run->plimits->limitsList[PROCESS_LIMITER_ID_IPC];
    ipcLimit->shmSize -= size;
    run->limitStat.shmSize -= size;
    SCHEDULER_UNLOCK(intSave);
    return;
}

#endif