mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
57 lines
1.3 KiB
C
57 lines
1.3 KiB
C
/*
|
|
* 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
|
|
|
|
enum {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
|