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/*
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* Copyright 2011 Red Hat, Inc.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <verto-libev.h>
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#define VERTO_MODULE_TYPES
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typedef struct ev_loop verto_mod_ctx;
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typedef ev_watcher verto_mod_ev;
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#include <verto-module.h>
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static verto_mod_ctx *
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libev_ctx_new(void)
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{
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return ev_loop_new(EVFLAG_AUTO);
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}
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static verto_mod_ctx *
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libev_ctx_default(void)
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{
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return ev_default_loop(EVFLAG_AUTO);
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}
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static void
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libev_ctx_free(verto_mod_ctx *ctx)
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{
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if (ctx != EV_DEFAULT)
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ev_loop_destroy(ctx);
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}
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static void
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libev_ctx_run(verto_mod_ctx *ctx)
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{
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ev_run(ctx, 0);
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}
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static void
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libev_ctx_run_once(verto_mod_ctx *ctx)
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{
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ev_run(ctx, EVRUN_ONCE);
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}
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static void
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libev_ctx_break(verto_mod_ctx *ctx)
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{
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ev_break(ctx, EVBREAK_ONE);
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}
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static void
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libev_ctx_reinitialize(verto_mod_ctx *ctx)
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{
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ev_loop_fork(ctx);
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}
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static void
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libev_callback(EV_P_ ev_watcher *w, int revents)
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{
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verto_ev_flag state = VERTO_EV_FLAG_NONE;
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#if EV_MULTIPLICITY
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/* Match the check in ev.h, which doesn't mark this unused */
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(void) EV_A;
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#endif
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if (verto_get_type(w->data)== VERTO_EV_TYPE_CHILD)
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verto_set_proc_status(w->data, ((ev_child*) w)->rstatus);
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if (revents & EV_READ)
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state |= VERTO_EV_FLAG_IO_READ;
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if (revents & EV_WRITE)
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state |= VERTO_EV_FLAG_IO_WRITE;
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if (revents & EV_ERROR)
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state |= VERTO_EV_FLAG_IO_ERROR;
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verto_set_fd_state(w->data, state);
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verto_fire(w->data);
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}
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static void
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libev_ctx_set_flags(verto_mod_ctx *ctx, const verto_ev *ev,
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verto_mod_ev *evpriv)
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{
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if (verto_get_type(ev) == VERTO_EV_TYPE_IO) {
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int events = EV_NONE;
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if (verto_get_flags(ev) & VERTO_EV_FLAG_IO_READ)
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events |= EV_READ;
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if (verto_get_flags(ev) & VERTO_EV_FLAG_IO_WRITE)
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events |= EV_WRITE;
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ev_io_stop(ctx, (ev_io*) evpriv);
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ev_io_set(((ev_io*) evpriv), verto_get_fd(ev), events);
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ev_io_start(ctx, (ev_io*) evpriv);
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}
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}
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#define setuptype(type, ...) \
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w.type = malloc(sizeof(ev_ ## type)); \
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if (w.type) { \
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ev_ ## type ## _init(w.type, (EV_CB(type, (*))) __VA_ARGS__); \
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ev_ ## type ## _start(ctx, w.type); \
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} \
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break
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static verto_mod_ev *
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libev_ctx_add(verto_mod_ctx *ctx, const verto_ev *ev, verto_ev_flag *flags)
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{
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union {
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ev_watcher *watcher;
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ev_io *io;
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ev_timer *timer;
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ev_idle *idle;
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ev_signal *signal;
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ev_child *child;
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} w;
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ev_tstamp interval;
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w.watcher = NULL;
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*flags |= VERTO_EV_FLAG_PERSIST;
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switch (verto_get_type(ev)) {
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case VERTO_EV_TYPE_IO:
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setuptype(io, libev_callback, verto_get_fd(ev), EV_NONE);
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case VERTO_EV_TYPE_TIMEOUT:
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interval = ((ev_tstamp) verto_get_interval(ev)) / 1000.0;
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setuptype(timer, libev_callback, interval, interval);
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case VERTO_EV_TYPE_IDLE:
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setuptype(idle, libev_callback);
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case VERTO_EV_TYPE_SIGNAL:
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setuptype(signal, libev_callback, verto_get_signal(ev));
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case VERTO_EV_TYPE_CHILD:
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*flags &= ~VERTO_EV_FLAG_PERSIST; /* Child events don't persist */
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setuptype(child, libev_callback, verto_get_proc(ev), 0);
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default:
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break; /* Not supported */
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}
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if (w.watcher) {
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w.watcher->data = (void*) ev;
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libev_ctx_set_flags(ctx, ev, w.watcher);
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}
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return w.watcher;
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}
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static void
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libev_ctx_del(verto_mod_ctx *ctx, const verto_ev *ev, verto_mod_ev *evpriv)
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{
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switch (verto_get_type(ev)) {
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case VERTO_EV_TYPE_IO:
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ev_io_stop(ctx, (ev_io*) evpriv);
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break;
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case VERTO_EV_TYPE_TIMEOUT:
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ev_timer_stop(ctx, (ev_timer*) evpriv);
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break;
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case VERTO_EV_TYPE_IDLE:
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ev_idle_stop(ctx, (ev_idle*) evpriv);
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break;
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case VERTO_EV_TYPE_SIGNAL:
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ev_signal_stop(ctx, (ev_signal*) evpriv);
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break;
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case VERTO_EV_TYPE_CHILD:
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ev_child_stop(ctx, (ev_child*) evpriv);
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break;
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default:
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break;
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}
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free(evpriv);
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}
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VERTO_MODULE(libev, ev_loop_new,
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VERTO_EV_TYPE_IO |
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VERTO_EV_TYPE_TIMEOUT |
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VERTO_EV_TYPE_IDLE |
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VERTO_EV_TYPE_SIGNAL |
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VERTO_EV_TYPE_CHILD);
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verto_ctx *
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verto_convert_libev(struct ev_loop* loop)
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{
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return verto_convert(libev, 0, loop);
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}
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