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

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

      if (ev_is_active (&ctx->tw))
        ev_timer_stop (EV_A_ &ctx->tw);

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

      ctx->nfd = -1;
    }

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

      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);
    }

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

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 = -1;
        ctx->afd = 0;
        ctx->iow = 0;
        ctx->pfd = 0;

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


Revision:	1.4
Committed:	Sat Dec 8 03:17:46 2007 UTC (16 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.3:	+0 -2 lines
Log Message:	sigh
#	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_timer tw;
28
29			GMainContext *gc;
30			};
31
32			static void
33	root	1.2	timer_cb (EV_P_ ev_timer *w, int revents)
34	root	1.1	{
35			/* nop */
36			}
37
38			static void
39	root	1.2	io_cb (EV_P_ ev_io *w, int revents)
40	root	1.1	{
41			GPollFD pfd = (GPollFD )w->data;
42
43			pfd->revents \|= pfd->events &
44			((revents & EV_READ ? G_IO_IN : 0)
45			\| (revents & EV_READ ? G_IO_OUT : 0));
46			}
47
48			static void
49	root	1.3	prepare_cb (EV_P_ ev_prepare *w, int revents)
50	root	1.1	{
51	root	1.3	struct econtext ctx = (struct econtext )(((char *)w) - offsetof (struct econtext, pw));
52			gint timeout;
53	root	1.1	int i;
54
55	root	1.3	if (ctx->nfd >= 0)
56	root	1.1	{
57	root	1.3	for (i = 0; i < ctx->nfd; ++i)
58			ev_io_stop (EV_A_ ctx->iow + i);
59
60			if (ev_is_active (&ctx->tw))
61			ev_timer_stop (EV_A_ &ctx->tw);
62	root	1.1
63	root	1.3	g_main_context_check (ctx->gc, ctx->maxpri, ctx->pfd, ctx->nfd);
64			g_main_context_dispatch (ctx->gc);
65	root	1.1
66	root	1.3	ctx->nfd = -1;
67	root	1.1	}
68
69			g_main_context_prepare (ctx->gc, &ctx->maxpri);
70
71			while (ctx->afd < (ctx->nfd = g_main_context_query (
72			ctx->gc,
73			ctx->maxpri,
74			&timeout,
75			ctx->pfd,
76			ctx->afd))
77			)
78			{
79			free (ctx->pfd);
80			free (ctx->iow);
81
82			ctx->afd = 1;
83			while (ctx->afd < ctx->nfd)
84			ctx->afd <<= 1;
85
86			ctx->pfd = malloc (ctx->afd * sizeof (GPollFD));
87			ctx->iow = malloc (ctx->afd * sizeof (ev_io));
88			}
89
90	root	1.3	for (i = 0; i < ctx->nfd; ++i)
91	root	1.1	{
92	root	1.3	GPollFD *pfd = ctx->pfd + i;
93			ev_io *iow = ctx->iow + i;
94	root	1.1
95			pfd->revents = 0;
96
97			ev_io_init (
98			iow,
99			io_cb,
100			pfd->fd,
101			(pfd->events & G_IO_IN ? EV_READ : 0)
102			\| (pfd->events & G_IO_OUT ? EV_WRITE : 0)
103			);
104			iow->data = (void *)pfd;
105			ev_io_start (EV_A_ iow);
106			}
107
108			if (timeout >= 0)
109			{
110			ev_timer_set (&ctx->tw, timeout * 1e-3, 0.);
111			ev_timer_start (EV_A_ &ctx->tw);
112			}
113			}
114
115			static struct econtext default_context;
116
117			MODULE = EV::Glib PACKAGE = EV::Glib
118
119			PROTOTYPES: ENABLE
120
121			BOOT:
122			{
123			I_EV_API ("EV::Glib");
124			}
125
126			long
127			install (SV *context)
128			CODE:
129			{
130			GMainContext *gc = get_gcontext (context);
131			struct econtext *ctx = &default_context;
132
133			ctx->gc = g_main_context_ref (gc);
134	root	1.3	ctx->nfd = -1;
135	root	1.1	ctx->afd = 0;
136			ctx->iow = 0;
137			ctx->pfd = 0;
138
139	root	1.3	ev_prepare_init (&ctx->pw, prepare_cb);
140			ev_prepare_start (EV_DEFAULT_ &ctx->pw);
141			ev_init (&ctx->tw, timer_cb);
142			ev_set_priority (&ctx->tw, EV_MINPRI);
143	root	1.1	}
144			OUTPUT:
145			RETVAL
146
147
148