xref: /f-stack/lib/include/machine/pcpu.h (revision a9643ea8)
1*a9643ea8Slogwang /*
2*a9643ea8Slogwang  * Copyright (c) 2010 Kip Macy All rights reserved.
3*a9643ea8Slogwang  * Copyright (C) 2017 THL A29 Limited, a Tencent company.
4*a9643ea8Slogwang  * All rights reserved.
5*a9643ea8Slogwang  *
6*a9643ea8Slogwang  * Redistribution and use in source and binary forms, with or without
7*a9643ea8Slogwang  * modification, are permitted provided that the following conditions are met:
8*a9643ea8Slogwang  *
9*a9643ea8Slogwang  * 1. Redistributions of source code must retain the above copyright notice, this
10*a9643ea8Slogwang  *   list of conditions and the following disclaimer.
11*a9643ea8Slogwang  * 2. Redistributions in binary form must reproduce the above copyright notice,
12*a9643ea8Slogwang  *   this list of conditions and the following disclaimer in the documentation
13*a9643ea8Slogwang  *   and/or other materials provided with the distribution.
14*a9643ea8Slogwang  *
15*a9643ea8Slogwang  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
16*a9643ea8Slogwang  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17*a9643ea8Slogwang  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18*a9643ea8Slogwang  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
19*a9643ea8Slogwang  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20*a9643ea8Slogwang  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21*a9643ea8Slogwang  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22*a9643ea8Slogwang  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23*a9643ea8Slogwang  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24*a9643ea8Slogwang  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25*a9643ea8Slogwang  *
26*a9643ea8Slogwang  */
27*a9643ea8Slogwang 
28*a9643ea8Slogwang #ifndef _FSTACK_MACHINE_PCPU_H_
29*a9643ea8Slogwang #define _FSTACK_MACHINE_PCPU_H_
30*a9643ea8Slogwang 
31*a9643ea8Slogwang #include_next <machine/pcpu.h>
32*a9643ea8Slogwang 
33*a9643ea8Slogwang #undef __curthread
34*a9643ea8Slogwang #undef PCPU_GET
35*a9643ea8Slogwang #undef PCPU_ADD
36*a9643ea8Slogwang #undef PCPU_INC
37*a9643ea8Slogwang #undef PCPU_PTR
38*a9643ea8Slogwang #undef PCPU_SET
39*a9643ea8Slogwang 
40*a9643ea8Slogwang extern __thread struct thread *pcurthread;
41*a9643ea8Slogwang extern struct pcpu *pcpup;
42*a9643ea8Slogwang 
43*a9643ea8Slogwang #define PCPU_GET(member)         (pcpup->pc_ ## member)
44*a9643ea8Slogwang #define PCPU_ADD(member, val)    (pcpup->pc_ ## member += (val))
45*a9643ea8Slogwang #define PCPU_INC(member)         PCPU_ADD(member, 1)
46*a9643ea8Slogwang #define PCPU_PTR(member)         (&pcpup->pc_ ## member)
47*a9643ea8Slogwang #define PCPU_SET(member, val)    (pcpup->pc_ ## member = (val))
48*a9643ea8Slogwang 
49*a9643ea8Slogwang static __inline struct thread *
50*a9643ea8Slogwang __curthread_ff(void)
51*a9643ea8Slogwang {
52*a9643ea8Slogwang     return (pcurthread);
53*a9643ea8Slogwang }
54*a9643ea8Slogwang 
55*a9643ea8Slogwang 
56*a9643ea8Slogwang #define __curthread __curthread_ff
57*a9643ea8Slogwang 
58*a9643ea8Slogwang #ifndef curthread
59*a9643ea8Slogwang #define curthread __curthread_ff()
60*a9643ea8Slogwang #endif
61*a9643ea8Slogwang #endif    /* _FSTACK_MACHINE_PCPU_H_ */
62