| 1 |
#include "EXTERN.h" |
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#include "perl.h" |
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#include "XSUB.h" |
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|
| 5 |
#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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#include "EVAPI.h" |
| 10 |
#include "../Coro/CoroAPI.h" |
| 11 |
|
| 12 |
static struct ev_prepare scheduler; |
| 13 |
static struct ev_idle idler; |
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static int inhibit; |
| 15 |
|
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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; |
| 31 |
|
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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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static void |
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once_cb (int revents, void *arg) |
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{ |
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SV *data = (SV *)arg; |
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|
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CORO_READY (data); |
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sv_setiv (data, revents); |
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SvREFCNT_dec (data); |
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} |
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|
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static int |
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slf_check_once (pTHX_ struct CoroSLF *frame) |
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{ |
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SV *data = (SV *)frame->data; |
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|
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/* return early when an exception is pending */ |
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if (CORO_THROW) |
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return 0; |
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|
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if (SvROK (data)) |
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return 1; /* repeat until we have been signalled */ |
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else |
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{ |
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dSP; |
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|
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XPUSHs (data); |
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|
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PUTBACK; |
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return 0; |
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} |
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} |
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|
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static void |
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slf_init_timed_io (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
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{ |
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SV *data; |
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|
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if (items < 2 || items > 3) |
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croak ("Coro::EV::timed_io_once requires exactly two or three parameters, not %d.\n", items); |
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|
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data = sv_2mortal (newRV_inc (CORO_CURRENT)); |
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frame->data = (void *)data; |
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frame->prepare = GCoroAPI->prepare_schedule; |
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frame->check = slf_check_once; |
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|
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ev_once ( |
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EV_DEFAULT_UC, |
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sv_fileno (arg [0]), |
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SvIV (arg [1]), |
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items >= 3 && SvOK (arg [2]) ? SvNV (arg [2]) : -1., |
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once_cb, |
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SvREFCNT_inc (data) |
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); |
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} |
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|
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static void |
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slf_init_timer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
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{ |
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SV *data; |
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NV after; |
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|
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if (items != 1) |
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croak ("Coro::EV::timer_once requires exactly one parameter, not %d.\n", items); |
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|
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data = sv_2mortal (newRV_inc (CORO_CURRENT)); |
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frame->data = (void *)data; |
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frame->prepare = GCoroAPI->prepare_schedule; |
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frame->check = slf_check_once; |
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|
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after = SvNV (arg [0]); |
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|
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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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SvREFCNT_inc (data) |
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); |
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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 *data; |
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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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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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|
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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 success) |
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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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CORO_READY (dir->data); |
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sv_setiv (dir->data, success); |
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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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static int |
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slf_check_rw (pTHX_ struct CoroSLF *frame) |
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{ |
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SV *data = (SV *)frame->data; |
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|
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if (SvROK (data)) |
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return 1; |
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else |
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{ |
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dSP; |
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|
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XPUSHs (data); |
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|
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PUTBACK; |
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return 0; |
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} |
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} |
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|
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static void |
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slf_init_rw (pTHX_ struct CoroSLF *frame, SV *arg, int wr) |
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{ |
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AV *handle = (AV *)SvRV (arg); |
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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 = wr ? &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->data = sv_2mortal (newRV_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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frame->data = (void *)dir->data; |
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frame->prepare = GCoroAPI->prepare_schedule; |
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frame->check = slf_check_rw; |
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} |
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|
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static void |
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slf_init_readable (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
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{ |
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slf_init_rw (aTHX_ frame, arg [0], 0); |
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} |
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|
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static void |
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slf_init_writable (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
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{ |
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slf_init_rw (aTHX_ frame, arg [0], 1); |
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} |
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|
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/*****************************************************************************/ |
| 277 |
|
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MODULE = Coro::EV PACKAGE = Coro::EV |
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|
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PROTOTYPES: ENABLE |
| 281 |
|
| 282 |
BOOT: |
| 283 |
{ |
| 284 |
I_EV_API ("Coro::EV"); |
| 285 |
I_CORO_API ("Coro::EV"); |
| 286 |
|
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EV_DEFAULT; /* make sure it is initialised */ |
| 288 |
|
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ev_prepare_init (&scheduler, prepare_cb); |
| 290 |
ev_set_priority (&scheduler, EV_MINPRI); |
| 291 |
ev_prepare_start (EV_DEFAULT_UC, &scheduler); |
| 292 |
ev_unref (EV_DEFAULT_UC); |
| 293 |
|
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ev_idle_init (&idler, idle_cb); |
| 295 |
ev_set_priority (&idler, EV_MINPRI); |
| 296 |
|
| 297 |
CORO_READYHOOK = readyhook; |
| 298 |
} |
| 299 |
|
| 300 |
void |
| 301 |
_loop_oneshot () |
| 302 |
CODE: |
| 303 |
{ |
| 304 |
/* inhibit the prepare watcher, as we know we are the only |
| 305 |
* ready coroutine and we don't want it to start an idle watcher |
| 306 |
* just because of the fallback idle coro being of lower priority. |
| 307 |
*/ |
| 308 |
++inhibit; |
| 309 |
|
| 310 |
/* same reasoning as above, make sure it is stopped */ |
| 311 |
if (ev_is_active (&idler)) |
| 312 |
ev_idle_stop (EV_DEFAULT_UC, &idler); |
| 313 |
|
| 314 |
ev_loop (EV_DEFAULT_UC, EVLOOP_ONESHOT); |
| 315 |
|
| 316 |
--inhibit; |
| 317 |
} |
| 318 |
|
| 319 |
void |
| 320 |
timed_io_once (...) |
| 321 |
CODE: |
| 322 |
CORO_EXECUTE_SLF_XS (slf_init_timed_io); |
| 323 |
|
| 324 |
void |
| 325 |
timer_once (...) |
| 326 |
CODE: |
| 327 |
CORO_EXECUTE_SLF_XS (slf_init_timer); |
| 328 |
|
| 329 |
void |
| 330 |
readable_ev (...) |
| 331 |
CODE: |
| 332 |
items = 1; /* ignore the remaining args for speed inside Coro::Handle */ |
| 333 |
CORO_EXECUTE_SLF_XS (slf_init_readable); |
| 334 |
|
| 335 |
void |
| 336 |
writable_ev (...) |
| 337 |
CODE: |
| 338 |
items = 1; /* ignore the remaining args for speed inside Coro::Handle */ |
| 339 |
CORO_EXECUTE_SLF_XS (slf_init_writable); |
| 340 |
|
