Ruby 2.7.7p221 (2022-11-24 revision 168ec2b1e5ad0e4688e963d9de019557c78feed9)
Context.h
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1/*
2 * This file is part of the "Coroutine" project and released under the MIT License.
3 *
4 * Created by Samuel Williams on 10/5/2018.
5 * Copyright, 2018, by Samuel Williams. All rights reserved.
6*/
7
8#pragma once
9
10#include <assert.h>
11#include <string.h>
12
13#define COROUTINE __declspec(noreturn) void __fastcall
14#define COROUTINE_LIMITED_ADDRESS_SPACE
15
16/* This doesn't include thread information block */
18
20{
21 void **stack_pointer;
22};
23
25
26static inline void coroutine_initialize_main(struct coroutine_context * context) {
27 context->stack_pointer = NULL;
28}
29
30static inline void coroutine_initialize(
31 struct coroutine_context *context,
32 coroutine_start start,
33 void *stack,
34 size_t size
35) {
36 assert(start && stack && size >= 1024);
37
38 // Stack grows down. Force 16-byte alignment.
39 char * top = (char*)stack + size;
40 context->stack_pointer = (void**)((uintptr_t)top & ~0xF);
41
42 *--context->stack_pointer = (void*)start;
43
44 /* Windows Thread Information Block */
45 *--context->stack_pointer = (void*)0xFFFFFFFF; /* fs:[0] */
46 *--context->stack_pointer = (void*)top; /* fs:[4] */
47 *--context->stack_pointer = (void*)stack; /* fs:[8] */
48
50 memset(context->stack_pointer, 0, sizeof(void*) * COROUTINE_REGISTERS);
51}
52
54
55static inline void coroutine_destroy(struct coroutine_context * context)
56{
57}
COROUTINE(* coroutine_start)(struct coroutine_context *from, struct coroutine_context *self)
Definition: Context.h:22
struct coroutine_context * coroutine_transfer(struct coroutine_context *current, struct coroutine_context *target)
Definition: Context.c:136
@ COROUTINE_REGISTERS
Definition: Context.h:15
unsigned int top
Definition: nkf.c:4323
#define NULL
#define __fastcall
() void(cc->call !=vm_call_general)
void * memset(void *, int, size_t)
unsigned int size
__uintptr_t uintptr_t
#define assert
struct coroutine_context * from
Definition: Context.h:37
void ** stack_pointer
Definition: Context.h:19
void * stack
Definition: Context.h:29