Attachment 83192 Details for Bug 48588 – Patch for xcb

[patch] Patch for xcb

0001-Allow-disabling-of-individual-extensions.patch (text/plain), 2.15 KB, created by Egbert Eich on 2013-07-29 10:13:44 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: Egbert Eich

Created: 2013-07-29 10:13:44 UTC

Size: 2.15 KB

patch

obsolete

>From e0fb83ab83d8847d8f70b358f3401768c889bf16 Mon Sep 17 00:00:00 2001
>From: Egbert Eich <eich@freedesktop.org>
>Date: Tue, 24 May 2011 18:41:05 +0200
>Subject: [PATCH] Allow disabling of individual extensions.
>
>Allow the user to specify thru environment variables
>XLIB_SKIP_EXT_<extension_name> which extensions will
>not be seen by xcb_get_extension_data().
>
>Signed-off-by: Egbert Eich <eich@suse.com>
>---
> src/xcb_ext.c | 41 ++++++++++++++++++++++++++++++++++++++---
> 1 file changed, 38 insertions(+), 3 deletions(-)
>
>diff --git a/src/xcb_ext.c b/src/xcb_ext.c
>index 831f283..5a1e75e 100644
>--- a/src/xcb_ext.c
>+++ b/src/xcb_ext.c
>@@ -59,6 +59,28 @@ static lazyreply *get_index(xcb_connection_t *c, int idx)
>     return c->ext.extensions + idx - 1;
> }
> 
>+static int check_ext_override(char *name)
>+{
>+#define PREFIX "XLIB_SKIP_EXT_"
>+#define PREFLEN (sizeof(PREFIX))
>+
>+    if (name) {
>+	char var[256 + PREFLEN];
>+	int i;
>+
>+	strcpy(var, PREFIX);
>+	for (i = 0; name[i] && (i < 255); i++)
>+	    var[i + PREFLEN - 1] = (name[i] == '-') ? '_' : name[i];
>+	var[i + PREFLEN - 1] = '\0';
>+
>+	if (getenv(var))
>+	    return 1;
>+    }
>+#undef PREFIX
>+#undef PREFLEN
>+    return 0;
>+}
>+
> static lazyreply *get_lazyreply(xcb_connection_t *c, xcb_extension_t *ext)
> {
>     static pthread_mutex_t global_lock = PTHREAD_MUTEX_INITIALIZER;
>@@ -74,9 +96,22 @@ static lazyreply *get_lazyreply(xcb_connection_t *c, xcb_extension_t *ext)
>     data = get_index(c, ext->global_id);
>     if(data && data->tag == LAZY_NONE)
>     {
>-        /* cache miss: query the server */
>-        data->tag = LAZY_COOKIE;
>-        data->value.cookie = xcb_query_extension(c, strlen(ext->name), ext->name);
>+	/* cache miss */
>+	if (!check_ext_override(ext->name)) {
>+	    /* query the server */
>+	    data->tag = LAZY_COOKIE;
>+	    data->value.cookie = xcb_query_extension(c, strlen(ext->name), ext->name);
>+	} else {
>+	    /* synth a reply */
>+	    xcb_query_extension_reply_t *reply;
>+	    data->tag = LAZY_FORCED;
>+	    reply = malloc(sizeof (xcb_query_extension_reply_t));
>+	    if (reply) {
>+		reply->response_type = 1;
>+		reply->present = 0;
>+	    }
>+	    data->value.reply = reply;
>+	}
>     }
>     return data;
> }
>-- 
>1.8.1.4
>

Actions: View | Splinter Review

Attachments on bug 48588: 59837 | 83191 | 83192

Use of freedesktop.org services, including Bugzilla, is subject to our Code of Conduct. How we collect and use information is described in our Privacy Policy.