1 /* 2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved. 3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without modification, 6 * are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, this list of 9 * conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list 12 * of conditions and the following disclaimer in the documentation and/or other materials 13 * provided with the distribution. 14 * 15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used 16 * to endorse or promote products derived from this software without specific prior written 17 * permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef _LOS_OOM_H 33 #define _LOS_OOM_H 34 #include "los_typedef.h" 35 36 #define OOM_TASK_PRIORITY 9 37 #define OOM_TASK_STACK_SIZE 0x1000 38 39 #define OOM_CHECK_MIN 10 /* 0.1s */ 40 #define OOM_DEFAULT_CHECK_INTERVAL 100 /* 1s */ 41 #define OOM_CHECK_MAX 1000 /* 10s */ 42 43 #define OOM_DEFAULT_LOW_MEM_THRESHOLD 0x80000 /* 512KByte */ 44 #define OOM_DEFAULT_LOW_MEM_THRESHOLD_MIN 0 /* 0, means always no memory */ 45 #define OOM_DEFAULT_LOW_MEM_THRESHOLD_MAX 0x100000 /* 1MByte */ 46 47 #define OOM_DEFAULT_RECLAIM_MEM_THRESHOLD 0x500000 /* 5MByte */ 48 49 typedef UINT32 (*OomFn)(UINTPTR param); 50 51 typedef struct { 52 UINT32 lowMemThreshold; /* byte */ 53 UINT32 reclaimMemThreshold; /* byte */ 54 UINT32 checkInterval; /* microsecond */ 55 OomFn processVictimCB; /* process victim process cb function */ 56 OomFn scoreCB; /* out of memory, the process score function */ 57 UINT16 swtmrID; 58 BOOL enabled; /* oom is enabled or not */ 59 } OomCB; 60 61 LITE_OS_SEC_TEXT_MINOR UINT32 OomTaskInit(VOID); 62 LITE_OS_SEC_TEXT_MINOR VOID OomInfodump(VOID); 63 LITE_OS_SEC_TEXT_MINOR VOID OomEnable(VOID); 64 LITE_OS_SEC_TEXT_MINOR VOID OomDisable(VOID); 65 LITE_OS_SEC_TEXT_MINOR VOID OomSetLowMemThreashold(UINT32 lowMemThreshold); 66 LITE_OS_SEC_TEXT_MINOR VOID OomSetReclaimMemThreashold(UINT32 reclaimMemThreshold); 67 LITE_OS_SEC_TEXT_MINOR VOID OomSetCheckInterval(UINT32 checkInterval); 68 LITE_OS_SEC_TEXT_MINOR BOOL OomCheckProcess(VOID); 69 #endif 70 71