| rjw | 6c1fd8f | 2022-11-30 14:33:01 +0800 | [diff] [blame] | 1 | /***************************************************************************** |
| 2 | * Copyright Statement: |
| 3 | * -------------------- |
| 4 | * This software is protected by Copyright and the information contained |
| 5 | * herein is confidential. The software may not be copied and the information |
| 6 | * contained herein may not be used or disclosed except with the written |
| 7 | * permission of MediaTek Inc. (C) 2009 |
| 8 | * |
| 9 | * BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES |
| 10 | * THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE") |
| 11 | * RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON |
| 12 | * AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES, |
| 13 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF |
| 14 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT. |
| 15 | * NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE |
| 16 | * SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR |
| 17 | * SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH |
| 18 | * THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO |
| 19 | * NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S |
| 20 | * SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM. |
| 21 | * |
| 22 | * BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE |
| 23 | * LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE, |
| 24 | * AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE, |
| 25 | * OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO |
| 26 | * MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE. |
| 27 | * |
| 28 | * THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE |
| 29 | * WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF |
| 30 | * LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND |
| 31 | * RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER |
| 32 | * THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC). |
| 33 | * |
| 34 | *****************************************************************************/ |
| 35 | |
| 36 | /***************************************************************************** |
| 37 | * |
| 38 | * Filename: |
| 39 | * --------- |
| 40 | * atomic.h |
| 41 | * |
| 42 | * Project: |
| 43 | * -------- |
| 44 | * MOLY |
| 45 | * |
| 46 | * Description: |
| 47 | * ------------ |
| 48 | * This header file defines the atomic operations. |
| 49 | * |
| 50 | * Author: |
| 51 | * ------- |
| 52 | * ------- |
| 53 | * |
| 54 | *============================================================================ |
| 55 | * HISTORY |
| 56 | * Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!! |
| 57 | *------------------------------------------------------------------------------ |
| 58 | * removed! |
| 59 | * removed! |
| 60 | * removed! |
| 61 | * |
| 62 | * removed! |
| 63 | * removed! |
| 64 | * |
| 65 | * |
| 66 | * |
| 67 | *------------------------------------------------------------------------------ |
| 68 | * Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!! |
| 69 | *============================================================================ |
| 70 | ****************************************************************************/ |
| 71 | |
| 72 | #ifndef __ATOMIC_H__ |
| 73 | #define __ATOMIC_H__ |
| 74 | |
| 75 | typedef struct { |
| 76 | volatile int counter; |
| 77 | } atomic_t; |
| 78 | |
| 79 | #define atomic_read(v) (*(volatile int *)&(v)->counter) |
| 80 | #define atomic_set(v, i) (((v)->counter) = (i)) |
| 81 | |
| 82 | static INLINE int atomic_read_no_wait(const atomic_t *v, int *s) |
| 83 | { |
| 84 | *s = 1; |
| 85 | return atomic_read(v); |
| 86 | } |
| 87 | |
| 88 | static INLINE void atomic_set_no_wait(atomic_t *v, int i, int *s) |
| 89 | { |
| 90 | *s = 1; |
| 91 | atomic_set(v, i); |
| 92 | } |
| 93 | |
| 94 | #endif /* __ATOMIC_H__ */ |