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#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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|
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#include <stddef.h> |
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#include <assert.h> |
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#include <string.h> |
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|
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#define EV_PROTOTYPES 0 |
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#include "EVAPI.h" |
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#include "../Coro/CoroAPI.h" |
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|
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static void |
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once_cb (int revents, void *arg) |
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{ |
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AV *av = (AV *)arg; /* @_ */ |
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av_push (av, newSViv (revents)); |
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CORO_READY (AvARRAY (av)[0]); |
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SvREFCNT_dec (av); |
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} |
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|
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#define ONCE_INIT AV *av = GvAV (PL_defgv) |
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#define ONCE_DONE av_clear (av); av_push (av, newRV_inc (CORO_CURRENT)) |
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|
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static struct ev_prepare scheduler; |
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static struct ev_idle idler; |
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static int inhibit; |
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|
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static void |
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idle_cb (EV_P_ ev_idle *w, int revents) |
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{ |
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ev_idle_stop (EV_A, w); |
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} |
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|
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static void |
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prepare_cb (EV_P_ ev_prepare *w, int revents) |
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{ |
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static int incede; |
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|
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if (inhibit) |
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return; |
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|
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++incede; |
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|
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CORO_CEDE_NOTSELF; |
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|
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while (CORO_NREADY >= incede && CORO_CEDE) |
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; |
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|
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/* if still ready, then we have lower-priority coroutines. |
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* poll anyways, but do not block. |
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*/ |
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if (CORO_NREADY >= incede) |
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{ |
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if (!ev_is_active (&idler)) |
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ev_idle_start (EV_A, &idler); |
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} |
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else |
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{ |
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if (ev_is_active (&idler)) |
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ev_idle_stop (EV_A, &idler); |
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} |
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|
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--incede; |
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} |
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|
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static void |
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readyhook (void) |
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{ |
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if (!ev_is_active (&idler)) |
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ev_idle_start (EV_DEFAULT_UC, &idler); |
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} |
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|
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/*****************************************************************************/ |
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|
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typedef struct |
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{ |
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ev_io io; |
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ev_timer tw; |
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SV *done; |
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SV *current; |
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} coro_dir; |
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|
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typedef struct |
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{ |
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coro_dir r, w; |
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} coro_handle; |
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|
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|
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static int |
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handle_free (pTHX_ SV *sv, MAGIC *mg) |
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{ |
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coro_handle *data = (coro_handle *)mg->mg_ptr; |
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mg->mg_ptr = 0; |
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|
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ev_io_stop (EV_DEFAULT_UC, &data->r.io); ev_io_stop (EV_DEFAULT_UC, &data->w.io); |
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ev_timer_stop (EV_DEFAULT_UC, &data->r.tw); ev_timer_stop (EV_DEFAULT_UC, &data->w.tw); |
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SvREFCNT_dec (data->r.done); SvREFCNT_dec (data->w.done); |
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SvREFCNT_dec (data->r.current); SvREFCNT_dec (data->w.current); |
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|
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return 0; |
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} |
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|
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static MGVTBL handle_vtbl = { 0, 0, 0, 0, handle_free }; |
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|
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static void |
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handle_cb (coro_dir *dir, int done) |
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{ |
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ev_io_stop (EV_DEFAULT_UC, &dir->io); |
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ev_timer_stop (EV_DEFAULT_UC, &dir->tw); |
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|
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sv_setiv (dir->done, done); |
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SvREFCNT_dec (dir->done); |
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dir->done = 0; |
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CORO_READY (dir->current); |
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SvREFCNT_dec (dir->current); |
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dir->current = 0; |
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} |
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|
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static void |
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handle_io_cb (EV_P_ ev_io *w, int revents) |
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{ |
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handle_cb ((coro_dir *)(((char *)w) - offsetof (coro_dir, io)), 1); |
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} |
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|
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static void |
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handle_timer_cb (EV_P_ ev_timer *w, int revents) |
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{ |
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handle_cb ((coro_dir *)(((char *)w) - offsetof (coro_dir, tw)), 0); |
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} |
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|
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/*****************************************************************************/ |
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|
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MODULE = Coro::EV PACKAGE = Coro::EV |
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|
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PROTOTYPES: ENABLE |
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|
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BOOT: |
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{ |
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I_EV_API ("Coro::EV"); |
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I_CORO_API ("Coro::Event"); |
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|
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EV_DEFAULT; /* make sure it is initialised */ |
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|
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ev_prepare_init (&scheduler, prepare_cb); |
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ev_set_priority (&scheduler, EV_MINPRI); |
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ev_prepare_start (EV_DEFAULT_UC, &scheduler); |
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ev_unref (EV_DEFAULT_UC); |
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|
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ev_idle_init (&idler, idle_cb); |
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ev_set_priority (&idler, EV_MINPRI); |
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|
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CORO_READYHOOK = readyhook; |
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} |
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|
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void |
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_loop_oneshot () |
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CODE: |
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{ |
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/* inhibit the prepare watcher, as we know we are the only |
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* ready coroutine and we don't want it to start an idle watcher |
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* just because of the fallback idle coro being of lower priority. |
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*/ |
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++inhibit; |
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|
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/* same reasoning as above, make sure it is stopped */ |
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if (ev_is_active (&idler)) |
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ev_idle_stop (EV_DEFAULT_UC, &idler); |
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|
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ev_loop (EV_DEFAULT_UC, EVLOOP_ONESHOT); |
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|
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--inhibit; |
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} |
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|
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void |
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_timed_io_once (...) |
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CODE: |
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{ |
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ONCE_INIT; |
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assert (AvFILLp (av) >= 1); |
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ev_once ( |
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EV_DEFAULT_UC, |
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sv_fileno (AvARRAY (av)[0]), |
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SvIV (AvARRAY (av)[1]), |
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AvFILLp (av) >= 2 && SvOK (AvARRAY (av)[2]) ? SvNV (AvARRAY (av)[2]) : -1., |
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once_cb, |
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(void *)SvREFCNT_inc (av) |
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); |
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ONCE_DONE; |
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} |
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|
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void |
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_timer_once (...) |
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CODE: |
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{ |
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ONCE_INIT; |
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NV after = SvNV (AvARRAY (av)[0]); |
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ev_once ( |
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EV_DEFAULT_UC, |
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-1, |
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0, |
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after >= 0. ? after : 0., |
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once_cb, |
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(void *)SvREFCNT_inc (av) |
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); |
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ONCE_DONE; |
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} |
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|
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void |
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_readable_ev (SV *handle_sv, SV *done_sv) |
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ALIAS: |
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_writable_ev = 1 |
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CODE: |
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{ |
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AV *handle = (AV *)SvRV (handle_sv); |
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SV *data_sv = AvARRAY (handle)[5]; |
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coro_handle *data; |
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coro_dir *dir; |
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assert (AvFILLp (handle) >= 7); |
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|
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if (!SvOK (data_sv)) |
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{ |
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int fno = sv_fileno (AvARRAY (handle)[0]); |
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data_sv = AvARRAY (handle)[5] = NEWSV (0, sizeof (coro_handle)); |
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SvPOK_only (data_sv); |
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SvREADONLY_on (data_sv); |
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data = (coro_handle *)SvPVX (data_sv); |
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memset (data, 0, sizeof (coro_handle)); |
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|
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ev_io_init (&data->r.io, handle_io_cb, fno, EV_READ); |
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ev_io_init (&data->w.io, handle_io_cb, fno, EV_WRITE); |
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ev_init (&data->r.tw, handle_timer_cb); |
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ev_init (&data->w.tw, handle_timer_cb); |
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|
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sv_magicext (data_sv, 0, PERL_MAGIC_ext, &handle_vtbl, (char *)data, 0); |
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} |
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else |
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data = (coro_handle *)SvPVX (data_sv); |
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|
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dir = ix ? &data->w : &data->r; |
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|
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if (ev_is_active (&dir->io) || ev_is_active (&dir->tw)) |
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croak ("recursive invocation of readable_ev or writable_ev"); |
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|
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dir->done = SvREFCNT_inc (done_sv); |
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dir->current = SvREFCNT_inc (CORO_CURRENT); |
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|
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{ |
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SV *to = AvARRAY (handle)[2]; |
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|
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if (SvOK (to)) |
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{ |
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ev_timer_set (&dir->tw, 0., SvNV (to)); |
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ev_timer_again (EV_DEFAULT_UC, &dir->tw); |
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} |
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} |
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|
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ev_io_start (EV_DEFAULT_UC, &dir->io); |
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} |
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|
