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implement a startup monitor, move code to src/startup.c

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This commit is contained in:
Michael Stapelberg 2011-10-10 11:36:21 +01:00
parent 198f16ece9
commit f4f4d782bb
6 changed files with 138 additions and 64 deletions
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1
include/all.h
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@ -66,5 +66,6 @@
#include "assignments.h"
#include "regex.h"
#include "libi3.h"
#include "startup.h"
#endif

35
include/startup.h Normal file
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@ -0,0 +1,35 @@
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009-2011 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
*/
#ifndef _STARTUP_H
#define _STARTUP_H
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn-monitor.h>
/**
* Starts the given application by passing it through a shell. We use double
* fork to avoid zombie processes. As the started application’s parent exits
* (immediately), the application is reparented to init (process-id 1), which
* correctly handles childs, so we don’t have to do it :-).
*
* The shell is determined by looking for the SHELL environment variable. If
* it does not exist, /bin/sh is used.
*
*/
void start_application(const char *command);
/**
* Called by libstartup-notification when something happens
*
*/
void startup_monitor_event(SnMonitorEvent *event, void *userdata);
#endif

12
include/util.h
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@ -66,18 +66,6 @@ Rect rect_add(Rect a, Rect b);
*/
bool update_if_necessary(uint32_t *destination, const uint32_t new_value);
/**
* Starts the given application by passing it through a shell. We use double
* fork to avoid zombie processes. As the started application’s parent exits
* (immediately), the application is reparented to init (process-id 1), which
* correctly handles childs, so we don’t have to do it :-).
*
* The shell is determined by looking for the SHELL environment variable. If
* it does not exist, /bin/sh is used.
*
*/
void start_application(const char *command);
/**
* exec()s an i3 utility, for example the config file migration script or
* i3-nagbar. This function first searches $PATH for the given utility named,

11
src/handlers.c
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@ -11,6 +11,9 @@
#include <X11/XKBlib.h>
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn-monitor.h>
#include "all.h"
int randr_base = -1;
@ -628,6 +631,11 @@ static int handle_expose_event(xcb_expose_event_t *event) {
*
*/
static void handle_client_message(xcb_client_message_event_t *event) {
/* If this is a startup notification ClientMessage, the library will handle
* it and call our monitor_event() callback. */
if (sn_xcb_display_process_event(sndisplay, (xcb_generic_event_t*)event))
return;
LOG("ClientMessage for window 0x%08x\n", event->window);
if (event->type == A__NET_WM_STATE) {
if (event->format != 32 || event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN) {
@ -984,6 +992,9 @@ static struct property_handler_t property_handlers[] = {
*
*/
void property_handlers_init() {
sn_monitor_context_new(sndisplay, conn_screen, startup_monitor_event, NULL, NULL);
property_handlers[0].atom = A__NET_WM_NAME;
property_handlers[1].atom = XCB_ATOM_WM_HINTS;
property_handlers[2].atom = XCB_ATOM_WM_NAME;

91
src/startup.c Normal file
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@ -0,0 +1,91 @@
/*
* vim:ts=4:sw=4:expandtab
*
* i3 - an improved dynamic tiling window manager
*
* © 2009-2011 Michael Stapelberg and contributors
*
* See file LICENSE for license information.
*
* startup.c: Startup notification code
*
*/
#include <sys/types.h>
#include <sys/wait.h>
#define SN_API_NOT_YET_FROZEN 1
#include <libsn/sn-launcher.h>
#include "all.h"
/*
* Starts the given application by passing it through a shell. We use double fork
* to avoid zombie processes. As the started application’s parent exits (immediately),
* the application is reparented to init (process-id 1), which correctly handles
* childs, so we don’t have to do it :-).
*
* The shell is determined by looking for the SHELL environment variable. If it
* does not exist, /bin/sh is used.
*
*/
void start_application(const char *command) {
/* Create a startup notification context to monitor the progress of this
* startup. */
SnLauncherContext *context;
context = sn_launcher_context_new(sndisplay, conn_screen);
sn_launcher_context_set_name(context, "i3");
sn_launcher_context_set_description(context, "exec command in i3");
/* Chop off everything starting from the first space (if there are any
* spaces in the command), since we don’t want the parameters. */
char *first_word = sstrdup(command);
char *space = strchr(first_word, ' ');
if (space)
*space = '\0';
sn_launcher_context_initiate(context, "i3", first_word, last_timestamp);
free(first_word);
LOG("startup id = %s\n", sn_launcher_context_get_startup_id(context));
LOG("executing: %s\n", command);
if (fork() == 0) {
/* Child process */
setsid();
if (fork() == 0) {
/* Setup the environment variable(s) */
sn_launcher_context_setup_child_process(context);
/* Stores the path of the shell */
static const char *shell = NULL;
if (shell == NULL)
if ((shell = getenv("SHELL")) == NULL)
shell = "/bin/sh";
/* This is the child */
execl(shell, shell, "-c", command, (void*)NULL);
/* not reached */
}
exit(0);
}
wait(0);
}
/*
* Called by libstartup-notification when something happens
*
*/
void startup_monitor_event(SnMonitorEvent *event, void *userdata) {
SnStartupSequence *sequence;
DLOG("something happened\n");
sequence = sn_monitor_event_get_startup_sequence(event);
switch (sn_monitor_event_get_type(event)) {
case SN_MONITOR_EVENT_COMPLETED:
DLOG("startup sequence %s completed\n", sn_startup_sequence_get_id(sequence));
break;
default:
/* ignore */
break;
}
}

52
src/util.c
View File

@ -61,58 +61,6 @@ bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
return ((*destination = new_value) != old_value);
}
/*
* Starts the given application by passing it through a shell. We use double fork
* to avoid zombie processes. As the started application’s parent exits (immediately),
* the application is reparented to init (process-id 1), which correctly handles
* childs, so we don’t have to do it :-).
*
* The shell is determined by looking for the SHELL environment variable. If it
* does not exist, /bin/sh is used.
*
*/
void start_application(const char *command) {
/* Create a startup notification context to monitor the progress of this
* startup. */
SnLauncherContext *context;
context = sn_launcher_context_new(sndisplay, conn_screen);
sn_launcher_context_set_name(context, "i3");
sn_launcher_context_set_description(context, "exec command in i3");
/* Chop off everything starting from the first space (if there are any
* spaces in the command), since we don’t want the parameters. */
char *first_word = sstrdup(command);
char *space = strchr(first_word, ' ');
if (space)
*space = '\0';
sn_launcher_context_initiate(context, "i3", first_word, last_timestamp);
free(first_word);
LOG("startup id = %s\n", sn_launcher_context_get_startup_id(context));
LOG("executing: %s\n", command);
if (fork() == 0) {
/* Child process */
setsid();
if (fork() == 0) {
/* Setup the environment variable(s) */
sn_launcher_context_setup_child_process(context);
/* Stores the path of the shell */
static const char *shell = NULL;
if (shell == NULL)
if ((shell = getenv("SHELL")) == NULL)
shell = "/bin/sh";
/* This is the child */
execl(shell, shell, "-c", command, (void*)NULL);
/* not reached */
}
exit(0);
}
wait(0);
}
/*
* exec()s an i3 utility, for example the config file migration script or
* i3-nagbar. This function first searches $PATH for the given utility named,