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

  if (ctx->nfd >= 0)
    {
      int i;

      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);

      ctx->nfd = -1;
    }
}

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;

  check_cb (EV_A_ &ctx->cw, 0);

  g_main_context_dispatch (ctx->gc);

  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_set_priority (&ctx->cw, ev_priority (w) + 1);
      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_check_init (&ctx->cw, check_cb);
        ev_set_priority (&ctx->cw, EV_MAXPRI - 1);
        ev_check_start (EV_DEFAULT_ &ctx->cw);

        ev_init (&ctx->tw, timer_cb);
        ev_set_priority (&ctx->tw, EV_MINPRI);
}
        OUTPUT:
        RETVAL


Revision:	1.5
Committed:	Sat Dec 8 03:40:32 2007 UTC (16 years, 5 months ago) by root
Branch:	MAIN
Changes since 1.4:	+23 -5 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	root	1.5	ev_check cw;
28	root	1.1	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	1.5	check_cb (EV_P_ ev_check *w, int revents)
51	root	1.1	{
52	root	1.5	struct econtext ctx = (struct econtext )(((char *)w) - offsetof (struct econtext, cw));
53	root	1.1
54	root	1.3	if (ctx->nfd >= 0)
55	root	1.1	{
56	root	1.5	int i;
57
58	root	1.3	for (i = 0; i < ctx->nfd; ++i)
59			ev_io_stop (EV_A_ ctx->iow + i);
60
61			if (ev_is_active (&ctx->tw))
62			ev_timer_stop (EV_A_ &ctx->tw);
63	root	1.1
64	root	1.3	g_main_context_check (ctx->gc, ctx->maxpri, ctx->pfd, ctx->nfd);
65	root	1.1
66	root	1.3	ctx->nfd = -1;
67	root	1.1	}
68	root	1.5	}
69
70			static void
71			prepare_cb (EV_P_ ev_prepare *w, int revents)
72			{
73			struct econtext ctx = (struct econtext )(((char *)w) - offsetof (struct econtext, pw));
74			gint timeout;
75			int i;
76
77			check_cb (EV_A_ &ctx->cw, 0);
78
79			g_main_context_dispatch (ctx->gc);
80	root	1.1
81			g_main_context_prepare (ctx->gc, &ctx->maxpri);
82
83			while (ctx->afd < (ctx->nfd = g_main_context_query (
84			ctx->gc,
85			ctx->maxpri,
86			&timeout,
87			ctx->pfd,
88			ctx->afd))
89			)
90			{
91			free (ctx->pfd);
92			free (ctx->iow);
93
94			ctx->afd = 1;
95			while (ctx->afd < ctx->nfd)
96			ctx->afd <<= 1;
97
98			ctx->pfd = malloc (ctx->afd * sizeof (GPollFD));
99			ctx->iow = malloc (ctx->afd * sizeof (ev_io));
100			}
101
102	root	1.3	for (i = 0; i < ctx->nfd; ++i)
103	root	1.1	{
104	root	1.3	GPollFD *pfd = ctx->pfd + i;
105			ev_io *iow = ctx->iow + i;
106	root	1.1
107			pfd->revents = 0;
108
109			ev_io_init (
110			iow,
111			io_cb,
112			pfd->fd,
113			(pfd->events & G_IO_IN ? EV_READ : 0)
114			\| (pfd->events & G_IO_OUT ? EV_WRITE : 0)
115			);
116			iow->data = (void *)pfd;
117	root	1.5	ev_set_priority (&ctx->cw, ev_priority (w) + 1);
118	root	1.1	ev_io_start (EV_A_ iow);
119			}
120
121			if (timeout >= 0)
122			{
123			ev_timer_set (&ctx->tw, timeout * 1e-3, 0.);
124			ev_timer_start (EV_A_ &ctx->tw);
125			}
126			}
127
128			static struct econtext default_context;
129
130			MODULE = EV::Glib PACKAGE = EV::Glib
131
132			PROTOTYPES: ENABLE
133
134			BOOT:
135			{
136			I_EV_API ("EV::Glib");
137			}
138
139			long
140			install (SV *context)
141			CODE:
142			{
143			GMainContext *gc = get_gcontext (context);
144			struct econtext *ctx = &default_context;
145
146			ctx->gc = g_main_context_ref (gc);
147	root	1.3	ctx->nfd = -1;
148	root	1.1	ctx->afd = 0;
149			ctx->iow = 0;
150			ctx->pfd = 0;
151
152	root	1.3	ev_prepare_init (&ctx->pw, prepare_cb);
153			ev_prepare_start (EV_DEFAULT_ &ctx->pw);
154	root	1.5
155			ev_check_init (&ctx->cw, check_cb);
156			ev_set_priority (&ctx->cw, EV_MAXPRI - 1);
157			ev_check_start (EV_DEFAULT_ &ctx->cw);
158
159	root	1.3	ev_init (&ctx->tw, timer_cb);
160			ev_set_priority (&ctx->tw, EV_MINPRI);
161	root	1.1	}
162			OUTPUT:
163			RETVAL
164
165
166