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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* Fluent Bit
* ==========
* Copyright (C) 2015-2022 The Fluent Bit Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef FLB_CORO_H
#define FLB_CORO_H
/* Required by OSX */
#ifndef _XOPEN_SOURCE
#define _XOPEN_SOURCE
#endif
#ifndef _DEFAULT_SOURCE
#define _DEFAULT_SOURCE
#endif
#include <fluent-bit/flb_info.h>
#include <fluent-bit/flb_macros.h>
#include <fluent-bit/flb_log.h>
#include <fluent-bit/flb_mem.h>
#include <monkey/mk_core.h>
#include <stdlib.h>
#include <limits.h>
#include <libco.h>
#ifdef FLB_HAVE_VALGRIND
#include <valgrind/valgrind.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
struct flb_coro {
#ifdef FLB_HAVE_VALGRIND
unsigned int valgrind_stack_id;
#endif
/* libco 'contexts' */
cothread_t caller;
cothread_t callee;
void *data;
};
#ifdef FLB_SYSTEM_MACOS
#ifdef __aarch64__
#define STACK_FACTOR 1.5 /* Use 36KiB for coro stacks */
#else
#define STACK_FACTOR 2 /* Use 24KiB for coro stacks */
#endif
#else
#define STACK_FACTOR 1
#endif
#ifdef FLB_CORO_STACK_SIZE
#define FLB_CORO_STACK_SIZE_BYTE FLB_CORO_STACK_SIZE
#else
#define FLB_CORO_STACK_SIZE_BYTE ((3 * STACK_FACTOR * PTHREAD_STACK_MIN) / 2)
#endif
#define FLB_CORO_DATA(coro) (((char *) coro) + sizeof(struct flb_coro))
static FLB_INLINE void flb_coro_yield(struct flb_coro *coro, int ended)
{
co_switch(coro->caller);
}
static FLB_INLINE void flb_coro_destroy(struct flb_coro *coro)
{
flb_trace("[coro] destroy coroutine=%p data=%p", coro,
FLB_CORO_DATA(coro));
#ifdef FLB_HAVE_VALGRIND
VALGRIND_STACK_DEREGISTER(coro->valgrind_stack_id);
#endif
if (coro->callee != NULL) {
co_delete(coro->callee);
}
flb_free(coro);
}
#define flb_coro_return(th) co_switch(th->caller)
void flb_coro_init();
void flb_coro_thread_init();
struct flb_coro *flb_coro_get();
void flb_coro_set(struct flb_coro *coro);
static FLB_INLINE void flb_coro_resume(struct flb_coro *coro)
{
flb_coro_set(coro);
coro->caller = co_active();
co_switch(coro->callee);
}
static FLB_INLINE struct flb_coro *flb_coro_create(void *data)
{
struct flb_coro *coro;
/* Create a thread context and initialize */
coro = (struct flb_coro *) flb_calloc(1, sizeof(struct flb_coro));
if (!coro) {
flb_errno();
return NULL;
}
coro->data = data;
return coro;
}
#ifdef __cplusplus
}
#endif
#endif /* !FLB_CORO_H */
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