blob: 03b91fd93725b58eee23cf0e1bbd7b046235f144 (
plain)
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
|
/*
* This file is part of the "Coroutine" project and released under the MIT License.
*
* Created by Samuel Williams on 10/5/2018.
* Copyright, 2018, by Samuel Williams. All rights reserved.
*/
#pragma once
#include <assert.h>
#include <string.h>
#if __cplusplus
extern "C" {
#endif
#define COROUTINE __attribute__((noreturn)) void
const size_t COROUTINE_REGISTERS = 0xb0 / 8;
typedef struct
{
void **stack_pointer;
} coroutine_context;
typedef COROUTINE(* coroutine_start)(coroutine_context *from, coroutine_context *self);
static inline void coroutine_initialize(
coroutine_context *context,
coroutine_start start,
void *stack_pointer,
size_t stack_size
) {
/* Force 16-byte alignment */
context->stack_pointer = (void**)((uintptr_t)stack_pointer & ~0xF);
if (!start) {
assert(!context->stack_pointer);
/* We are main coroutine for this thread */
return;
}
context->stack_pointer -= COROUTINE_REGISTERS;
memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
context->stack_pointer[0xa0 / 8] = (void*)start;
}
coroutine_context * coroutine_transfer(coroutine_context * current, coroutine_context * target);
static inline void coroutine_destroy(coroutine_context * context)
{
}
#if __cplusplus
}
#endif
|
