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text: Respawn input method process if it exits

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Just the same as it is done in shell.c, if the input method process exits
for any reason, we relaunch it automatically, as it is not possible to
launch a standalone application outside of the weston process.

In v2:
 - Proper error message when giving up.

Signed-off-by: Eduardo Lima (Etrunko) <eduardo.lima@intel.com>
This commit is contained in:
Eduardo Lima (Etrunko) 2013-05-14 13:09:31 -03:00 committed by Kristian Høgsberg
parent a50e6e4c50
commit 2733700bb4
1 changed files with 23 additions and 0 deletions
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23
src/text-backend.c
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@ -24,6 +24,7 @@
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <time.h>
#include "compositor.h"
#include "text-server-protocol.h"
@ -92,6 +93,9 @@ struct text_backend {
struct wl_resource *binding;
struct weston_process process;
struct wl_client *client;
unsigned deathcount;
uint32_t deathstamp;
} input_method;
struct wl_listener seat_created_listener;
@ -820,14 +824,33 @@ input_method_init_seat(struct weston_seat *seat)
seat->input_method->focus_listener_initialized = 1;
}
static void launch_input_method(struct text_backend *text_backend);
static void
handle_input_method_sigchld(struct weston_process *process, int status)
{
uint32_t time;
struct text_backend *text_backend =
container_of(process, struct text_backend, input_method.process);
text_backend->input_method.process.pid = 0;
text_backend->input_method.client = NULL;
/* if input_method dies more than 5 times in 10 seconds, give up */
time = weston_compositor_get_time();
if (time - text_backend->input_method.deathstamp > 10000) {
text_backend->input_method.deathstamp = time;
text_backend->input_method.deathcount = 0;
}
text_backend->input_method.deathcount++;
if (text_backend->input_method.deathcount > 5) {
weston_log("input_method died, giving up.\n");
return;
}
weston_log("input_method died, respawning...\n");
launch_input_method(text_backend);
}
static void