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/* Copyright Joyent, Inc. and other Node contributors. | |
* | |
* Permission is hereby granted, free of charge, to any person obtaining a | |
* copy of this software and associated documentation files (the | |
* "Software"), to deal in the Software without restriction, including | |
* without limitation the rights to use, copy, modify, merge, publish, | |
* distribute, sublicense, and/or sell copies of the Software, and to permit | |
* persons to whom the Software is furnished to do so, subject to the | |
* following conditions: | |
* | |
* The above copyright notice and this permission notice shall be included | |
* in all copies or substantial portions of the Software. | |
* | |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
* NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
* USE OR OTHER DEALINGS IN THE SOFTWARE. | |
*/ | |
#ifndef NODE_EV_EMUL_H_ | |
#define NODE_EV_EMUL_H_ | |
#include "uv.h" | |
#include <stdio.h> | |
#include <stddef.h> | |
#include <stdint.h> | |
#undef ev_timer_init | |
#undef ev_timer_set | |
#undef ev_io_init | |
#undef ev_io_set | |
#undef EV_P | |
#undef EV_P_ | |
#undef EV_A | |
#undef EV_A_ | |
#undef EV_DEFAULT | |
#undef EV_DEFAULT_ | |
#undef EV_DEFAULT_UC | |
#undef EV_DEFAULT_UC_ | |
#define EV_P void | |
#define EV_P_ | |
#define EV_A | |
#define EV_A_ | |
#define EV_DEFAULT | |
#define EV_DEFAULT_ | |
#define EV_DEFAULT_UC | |
#define EV_DEFAULT_UC_ | |
#define __uv_container_of(ptr, type, field) \ | |
((type *) ((char *) (ptr) - offsetof(type, field))) | |
#define __uv_warn_of(old_, new_) \ | |
do { \ | |
if (__uv_warn_##old_) break; \ | |
__uv_warn_##old_ = 1; \ | |
fputs("WARNING: " #old_ " is deprecated, use " #new_ "\n", stderr); \ | |
} \ | |
while (0) | |
static int __uv_warn_ev_io __attribute__((unused)); | |
static int __uv_warn_ev_timer __attribute__((unused)); | |
static int __uv_warn_ev_ref __attribute__((unused)); | |
static int __uv_warn_ev_unref __attribute__((unused)); | |
struct __ev_io; | |
typedef struct __ev_io __ev_io; | |
typedef void (*__ev_io_cb)(__ev_io*, int); | |
struct __ev_timer; | |
typedef struct __ev_timer __ev_timer; | |
typedef void (*__ev_timer_cb)(__ev_timer*, int); | |
struct __ev_io { | |
int fd; | |
int events; | |
void* data; | |
__ev_io_cb cb; | |
uv_poll_t handle; | |
}; | |
struct __ev_timer { | |
double delay; | |
double repeat; | |
__ev_timer_cb cb; | |
uv_timer_t handle; | |
}; | |
inline static void __uv_poll_cb(uv_poll_t* handle, int status, int events) { | |
__ev_io* w = __uv_container_of(handle, __ev_io, handle); | |
w->cb(w, events); | |
(void) status; | |
} | |
inline static void __uv_timer_cb(uv_timer_t* handle, int status) { | |
__ev_timer* w = __uv_container_of(handle, __ev_timer, handle); | |
w->cb(w, 0); | |
(void) status; | |
} | |
inline static void __ev_io_init(__ev_io* w, __ev_io_cb cb, int fd, int events) { | |
__uv_warn_of(ev_io, uv_poll_t); | |
w->cb = cb; | |
w->fd = fd; | |
w->events = events; | |
uv_poll_init(uv_default_loop(), &w->handle, w->fd); | |
} | |
inline static void __ev_io_set(__ev_io* w, int fd, int events) { | |
__uv_warn_of(ev_io, uv_poll_t); | |
w->fd = fd; | |
w->events = events; | |
} | |
inline static void __ev_io_start(__ev_io* w) { | |
__uv_warn_of(ev_io, uv_poll_t); | |
uv_poll_start(&w->handle, w->events, __uv_poll_cb); | |
} | |
inline static void __ev_io_stop(__ev_io* w) { | |
__uv_warn_of(ev_io, uv_poll_t); | |
uv_poll_stop(&w->handle); | |
} | |
inline static void __ev_timer_init(__ev_timer* w, | |
__ev_timer_cb cb, | |
double delay, | |
double repeat) { | |
__uv_warn_of(ev_timer, uv_timer_t); | |
w->cb = cb; | |
w->delay = delay; | |
w->repeat = repeat; | |
uv_timer_init(uv_default_loop(), &w->handle); | |
} | |
inline static void __ev_timer_set(__ev_timer* w, | |
double delay, | |
double repeat) { | |
__uv_warn_of(ev_timer, uv_timer_t); | |
w->delay = delay; | |
w->repeat = repeat; | |
} | |
inline static void __ev_timer_start(__ev_timer* w) { | |
uint64_t ms = 1000; | |
__uv_warn_of(ev_timer, uv_timer_t); | |
uv_timer_start(&w->handle, __uv_timer_cb, w->delay * ms, w->repeat * ms); | |
} | |
inline static void __ev_timer_stop(__ev_timer* w) { | |
__uv_warn_of(ev_timer, uv_timer_t); | |
uv_timer_stop(&w->handle); | |
} | |
inline static void __ev_timer_again(__ev_timer* w) { | |
__uv_warn_of(ev_timer, uv_timer_t); | |
uv_timer_again(&w->handle); | |
} | |
/* Evil. Using this will void your warranty. */ | |
inline static void __ev_ref(void) { | |
__uv_warn_of(ev_ref, uv_ref); | |
uv_default_loop()->active_handles++; | |
} | |
/* Evil. Using this will void your warranty. */ | |
inline static void __ev_unref(void) { | |
__uv_warn_of(ev_unref, uv_unref); | |
uv_default_loop()->active_handles--; | |
} | |
#define ev_io __ev_io | |
#define ev_io_init __ev_io_init | |
#define ev_io_set __ev_io_set | |
#define ev_io_start __ev_io_start | |
#define ev_io_stop __ev_io_stop | |
#define ev_timer __ev_timer | |
#define ev_timer_init __ev_timer_init | |
#define ev_timer_set __ev_timer_set | |
#define ev_timer_start __ev_timer_start | |
#define ev_timer_stop __ev_timer_stop | |
#define ev_timer_again __ev_timer_again | |
#define ev_ref __ev_ref | |
#define ev_unref __ev_unref | |
#endif /* NODE_EV_EMUL_H_ */ |
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#include "ev-emul.h" | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <unistd.h> | |
#include <assert.h> | |
static void timer_cb(EV_P_ ev_timer* w, int revents) { | |
write(STDOUT_FILENO, ".", 1); | |
ev_timer_again(w); | |
} | |
static void read_cb(EV_P_ ev_io* w, int revents) { | |
char buf[256]; | |
ssize_t n; | |
assert(revents & EV_READ); | |
n = read(w->fd, buf, sizeof(buf)); | |
if (n == -1 || n == 0) | |
ev_io_stop(w); | |
else | |
write(STDOUT_FILENO, buf, n); | |
} | |
int main(void) { | |
ev_timer t; | |
ev_io w; | |
ev_timer_init(&t, timer_cb, 1.0, 1.0); | |
ev_timer_start(&t); | |
ev_unref(); | |
ev_io_init(&w, read_cb, STDIN_FILENO, EV_READ); | |
ev_io_start(&w); | |
uv_run(uv_default_loop()); | |
return 0; | |
} |
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/cc @isaacs