EV-Glib/Glib.xs

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"

#include <stddef.h>

#include <glib.h>
#include "EVAPI.h"

static GMainContext *
get_gcontext (SV *context)
{
  if (!SvOK (context))
    return g_main_context_default ();

  croak ("only the default context is currently supported.");
}

struct econtext
{
  GPollFD *pfd;
  ev_io *iow;
  int nfd, afd;
  gint maxpri;

  ev_prepare pw;
  ev_check cw;
  ev_timer tw;

  GMainContext *gc;
};

static void
timer_cb (EV_P_ ev_timer *w, int revents)
{
  /* nop */
}

static void
io_cb (EV_P_ ev_io *w, int revents)
{
  GPollFD *pfd = (GPollFD *)w->data;

  pfd->revents |= pfd->events &
    ((revents & EV_READ ? G_IO_IN : 0)
     | (revents & EV_READ ? G_IO_OUT : 0));
}

static void
cleanup (EV_P_ struct econtext *ctx)
{
  int i;

  for (i = 0; i < ctx->nfd; ++i)
    {
      ev_ref (EV_A);
      ev_io_stop (EV_A_ ctx->iow + i);
    }

  ctx->nfd = 0;

  if (ev_is_active (&ctx->tw))
    {
      ev_ref (EV_A);
      ev_timer_stop (EV_A_ &ctx->tw);
    }
}

static void
prepare_cb (EV_P_ ev_prepare *w, int revents)
{
  struct econtext *ctx = (struct econtext *)(((char *)w) - offsetof (struct econtext, pw));
  gint timeout;
  int n;

  cleanup (EV_A_ ctx);

  g_main_context_prepare (ctx->gc, &ctx->maxpri);

  while (ctx->afd < (ctx->nfd = g_main_context_query  (
    ctx->gc,
    ctx->maxpri,
    &timeout,
    ctx->pfd,
    ctx->afd))
  )
    {
      free (ctx->pfd);
      free (ctx->iow);

      ctx->afd = 1;
      while (ctx->afd < ctx->nfd)
        ctx->afd <<= 1;

      ctx->pfd = malloc (ctx->afd * sizeof (GPollFD));
      ctx->iow = malloc (ctx->afd * sizeof (ev_io));
    }

  for (n = 0; n < ctx->nfd; ++n)
    {
      GPollFD *pfd = ctx->pfd + n;
      ev_io *iow = ctx->iow + n;

      pfd->revents = 0;

      ev_io_init (
        iow,
        io_cb,
        pfd->fd,
        (pfd->events & G_IO_IN ? EV_READ : 0)
         | (pfd->events & G_IO_OUT ? EV_WRITE : 0)
      );
      iow->data = (void *)pfd;
      ev_io_start (EV_A_ iow);
      ev_unref (EV_A);
    }

  if (timeout >= 0)
    {
      ev_timer_set (&ctx->tw, timeout * 1e-3, 0.);
      ev_timer_start (EV_A_ &ctx->tw);
      ev_unref (EV_A);
    }
}

static void
check_cb (EV_P_ ev_check *w, int revents)
{
  struct econtext *ctx = (struct econtext *)(((char *)w) - offsetof (struct econtext, cw));

  cleanup (EV_A_ ctx);

  g_main_context_check (ctx->gc, ctx->maxpri, ctx->pfd, ctx->nfd);
  g_main_context_dispatch (ctx->gc);
}

static struct econtext default_context;

MODULE = EV::Glib                PACKAGE = EV::Glib

PROTOTYPES: ENABLE

BOOT:
{
        I_EV_API ("EV::Glib");
}

long
install (SV *context)
        CODE:
{
        GMainContext *gc = get_gcontext (context);
        struct econtext *ctx = &default_context;

        ctx->gc  = g_main_context_ref (gc);
        ctx->nfd = 0;
        ctx->afd = 0;
        ctx->iow = 0;
        ctx->pfd = 0;

        ev_prepare_init (&ctx->pw, prepare_cb); ev_prepare_start (EV_DEFAULT_ &ctx->pw);
        ev_check_init   (&ctx->cw, check_cb);   ev_check_start   (EV_DEFAULT_ &ctx->cw);
        ev_init         (&ctx->tw, timer_cb); ev_set_priority (&ctx->tw, EV_MINPRI);
}
        OUTPUT:
        RETVAL


Revision:	1.2
Committed:	Sat Dec 8 02:59:43 2007 UTC (16 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.1:	+11 -10 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include "EXTERN.h"
2			#include "perl.h"
3			#include "XSUB.h"
4
5			#include <stddef.h>
6
7			#include <glib.h>
8			#include "EVAPI.h"
9
10			static GMainContext *
11			get_gcontext (SV *context)
12			{
13			if (!SvOK (context))
14			return g_main_context_default ();
15
16			croak ("only the default context is currently supported.");
17			}
18
19			struct econtext
20			{
21			GPollFD *pfd;
22			ev_io *iow;
23			int nfd, afd;
24			gint maxpri;
25
26			ev_prepare pw;
27			ev_check cw;
28			ev_timer tw;
29
30			GMainContext *gc;
31			};
32
33			static void
34	root	1.2	timer_cb (EV_P_ ev_timer *w, int revents)
35	root	1.1	{
36			/* nop */
37			}
38
39			static void
40	root	1.2	io_cb (EV_P_ ev_io *w, int revents)
41	root	1.1	{
42			GPollFD pfd = (GPollFD )w->data;
43
44			pfd->revents \|= pfd->events &
45			((revents & EV_READ ? G_IO_IN : 0)
46			\| (revents & EV_READ ? G_IO_OUT : 0));
47			}
48
49			static void
50	root	1.2	cleanup (EV_P_ struct econtext *ctx)
51	root	1.1	{
52			int i;
53
54			for (i = 0; i < ctx->nfd; ++i)
55			{
56	root	1.2	ev_ref (EV_A);
57	root	1.1	ev_io_stop (EV_A_ ctx->iow + i);
58			}
59
60			ctx->nfd = 0;
61
62			if (ev_is_active (&ctx->tw))
63			{
64	root	1.2	ev_ref (EV_A);
65	root	1.1	ev_timer_stop (EV_A_ &ctx->tw);
66			}
67			}
68
69			static void
70	root	1.2	prepare_cb (EV_P_ ev_prepare *w, int revents)
71	root	1.1	{
72			struct econtext ctx = (struct econtext )(((char *)w) - offsetof (struct econtext, pw));
73			gint timeout;
74			int n;
75
76	root	1.2	cleanup (EV_A_ ctx);
77	root	1.1
78			g_main_context_prepare (ctx->gc, &ctx->maxpri);
79
80			while (ctx->afd < (ctx->nfd = g_main_context_query (
81			ctx->gc,
82			ctx->maxpri,
83			&timeout,
84			ctx->pfd,
85			ctx->afd))
86			)
87			{
88			free (ctx->pfd);
89			free (ctx->iow);
90
91			ctx->afd = 1;
92			while (ctx->afd < ctx->nfd)
93			ctx->afd <<= 1;
94
95			ctx->pfd = malloc (ctx->afd * sizeof (GPollFD));
96			ctx->iow = malloc (ctx->afd * sizeof (ev_io));
97			}
98
99			for (n = 0; n < ctx->nfd; ++n)
100			{
101			GPollFD *pfd = ctx->pfd + n;
102			ev_io *iow = ctx->iow + n;
103
104			pfd->revents = 0;
105
106			ev_io_init (
107			iow,
108			io_cb,
109			pfd->fd,
110			(pfd->events & G_IO_IN ? EV_READ : 0)
111			\| (pfd->events & G_IO_OUT ? EV_WRITE : 0)
112			);
113			iow->data = (void *)pfd;
114			ev_io_start (EV_A_ iow);
115	root	1.2	ev_unref (EV_A);
116	root	1.1	}
117
118			if (timeout >= 0)
119			{
120			ev_timer_set (&ctx->tw, timeout * 1e-3, 0.);
121			ev_timer_start (EV_A_ &ctx->tw);
122	root	1.2	ev_unref (EV_A);
123	root	1.1	}
124			}
125
126			static void
127	root	1.2	check_cb (EV_P_ ev_check *w, int revents)
128	root	1.1	{
129			struct econtext ctx = (struct econtext )(((char *)w) - offsetof (struct econtext, cw));
130
131	root	1.2	cleanup (EV_A_ ctx);
132	root	1.1
133			g_main_context_check (ctx->gc, ctx->maxpri, ctx->pfd, ctx->nfd);
134			g_main_context_dispatch (ctx->gc);
135			}
136
137			static struct econtext default_context;
138
139			MODULE = EV::Glib PACKAGE = EV::Glib
140
141			PROTOTYPES: ENABLE
142
143			BOOT:
144			{
145			I_EV_API ("EV::Glib");
146			}
147
148			long
149			install (SV *context)
150			CODE:
151			{
152			GMainContext *gc = get_gcontext (context);
153			struct econtext *ctx = &default_context;
154
155			ctx->gc = g_main_context_ref (gc);
156			ctx->nfd = 0;
157			ctx->afd = 0;
158			ctx->iow = 0;
159			ctx->pfd = 0;
160
161			ev_prepare_init (&ctx->pw, prepare_cb); ev_prepare_start (EV_DEFAULT_ &ctx->pw);
162			ev_check_init (&ctx->cw, check_cb); ev_check_start (EV_DEFAULT_ &ctx->cw);
163			ev_init (&ctx->tw, timer_cb); ev_set_priority (&ctx->tw, EV_MINPRI);
164			}
165			OUTPUT:
166			RETVAL
167
168
169