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authorLennart Poettering <lennart@poettering.net>2013-11-11 19:34:13 +0100
committerLennart Poettering <lennart@poettering.net>2013-11-12 00:12:43 +0100
commitafc6adb5ec7e73bc13156c43f52fb015cd80cc68 (patch)
tree999c8810a856d98826900c81c6bfb42fe4dc0ee7 /src
parentd5e4ec5b1ee1e3f04a2cb0871490490eb47ef34a (diff)
bus: introduce concept of a "default" event loop per-thread and make use of it everywhere
Try to emphasize a bit that there should be a mapping between event loops and threads, hence introduce a logic that there's one "default" event loop for each thread, that can be queried via "sd_event_default()".
Diffstat (limited to 'src')
-rw-r--r--src/hostname/hostnamed.c2
-rw-r--r--src/libsystemd-bus/libsystemd-bus.sym6
-rw-r--r--src/libsystemd-bus/sd-event.c44
-rw-r--r--src/libsystemd-bus/test-event.c2
-rw-r--r--src/locale/localed.c2
-rw-r--r--src/login/logind.c2
-rw-r--r--src/machine/machined.c2
-rw-r--r--src/network/networkd-manager.c2
-rw-r--r--src/socket-proxy/socket-proxyd.c2
-rw-r--r--src/systemd/sd-event.h6
-rw-r--r--src/timedate/timedated.c2
11 files changed, 61 insertions, 11 deletions
diff --git a/src/hostname/hostnamed.c b/src/hostname/hostnamed.c
index 35dccf8cb6..d2f0b022e5 100644
--- a/src/hostname/hostnamed.c
+++ b/src/hostname/hostnamed.c
@@ -643,7 +643,7 @@ int main(int argc, char *argv[]) {
goto finish;
}
- r = sd_event_new(&event);
+ r = sd_event_default(&event);
if (r < 0) {
log_error("Failed to allocate event loop: %s", strerror(-r));
goto finish;
diff --git a/src/libsystemd-bus/libsystemd-bus.sym b/src/libsystemd-bus/libsystemd-bus.sym
index 2c4f07d753..796a395a17 100644
--- a/src/libsystemd-bus/libsystemd-bus.sym
+++ b/src/libsystemd-bus/libsystemd-bus.sym
@@ -197,6 +197,8 @@ global:
sd_memfd_set_size;
/* sd-event functions */
+ sd_event_default;
+
sd_event_new;
sd_event_ref;
sd_event_unref;
@@ -213,15 +215,17 @@ global:
sd_event_loop;
sd_event_get_state;
+ sd_event_get_tid;
sd_event_get_quit;
sd_event_request_quit;
sd_event_get_now_realtime;
sd_event_get_now_monotonic;
- sd_event_get;
sd_event_source_ref;
sd_event_source_unref;
+ sd_event_get;
+
sd_event_source_set_prepare;
sd_event_source_get_pending;
sd_event_source_get_priority;
diff --git a/src/libsystemd-bus/sd-event.c b/src/libsystemd-bus/sd-event.c
index 97e6db289b..8025d24bb7 100644
--- a/src/libsystemd-bus/sd-event.c
+++ b/src/libsystemd-bus/sd-event.c
@@ -23,12 +23,13 @@
#include <sys/timerfd.h>
#include <sys/wait.h>
+#include "sd-id128.h"
#include "macro.h"
#include "prioq.h"
#include "hashmap.h"
#include "util.h"
#include "time-util.h"
-#include "sd-id128.h"
+#include "missing.h"
#include "sd-event.h"
@@ -138,6 +139,9 @@ struct sd_event {
bool quit_requested:1;
bool need_process_child:1;
+
+ pid_t tid;
+ sd_event **default_event_ptr;
};
static int pending_prioq_compare(const void *a, const void *b) {
@@ -304,6 +308,9 @@ static int quit_prioq_compare(const void *a, const void *b) {
static void event_free(sd_event *e) {
assert(e);
+ if (e->default_event_ptr)
+ *(e->default_event_ptr) = NULL;
+
if (e->epoll_fd >= 0)
close_nointr_nofail(e->epoll_fd);
@@ -1869,3 +1876,38 @@ _public_ int sd_event_get_now_monotonic(sd_event *e, uint64_t *usec) {
*usec = e->timestamp.monotonic;
return 0;
}
+
+_public_ int sd_event_default(sd_event **ret) {
+
+ static __thread sd_event *default_event = NULL;
+ sd_event *e;
+ int r;
+
+ if (!ret)
+ return !!default_event;
+
+ if (default_event) {
+ *ret = sd_event_ref(default_event);
+ return 0;
+ }
+
+ r = sd_event_new(&e);
+ if (r < 0)
+ return r;
+
+ e->default_event_ptr = &default_event;
+ e->tid = gettid();
+ default_event = e;
+
+ *ret = e;
+ return 1;
+}
+
+_public_ int sd_event_get_tid(sd_event *e, pid_t *tid) {
+ assert_return(e, -EINVAL);
+ assert_return(tid, -EINVAL);
+ assert_return(e->tid != 0, -ENXIO);
+
+ *tid = e->tid;
+ return 0;
+}
diff --git a/src/libsystemd-bus/test-event.c b/src/libsystemd-bus/test-event.c
index 65c1c296f8..ba60a47a34 100644
--- a/src/libsystemd-bus/test-event.c
+++ b/src/libsystemd-bus/test-event.c
@@ -163,7 +163,7 @@ int main(int argc, char *argv[]) {
assert_se(pipe(b) >= 0);
assert_se(pipe(d) >= 0);
- assert_se(sd_event_new(&e) >= 0);
+ assert_se(sd_event_default(&e) >= 0);
got_a = false, got_b = false, got_c = false, got_d = 0;
diff --git a/src/locale/localed.c b/src/locale/localed.c
index 7e03d82575..32d52a90a2 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -1115,7 +1115,7 @@ int main(int argc, char *argv[]) {
goto finish;
}
- r = sd_event_new(&event);
+ r = sd_event_default(&event);
if (r < 0) {
log_error("Failed to allocate event loop: %s", strerror(-r));
goto finish;
diff --git a/src/login/logind.c b/src/login/logind.c
index c4227f16b2..b54689e1d5 100644
--- a/src/login/logind.c
+++ b/src/login/logind.c
@@ -90,7 +90,7 @@ Manager *manager_new(void) {
return NULL;
}
- r = sd_event_new(&m->event);
+ r = sd_event_default(&m->event);
if (r < 0) {
manager_free(m);
return NULL;
diff --git a/src/machine/machined.c b/src/machine/machined.c
index d6dd984e76..ee6a6d6aeb 100644
--- a/src/machine/machined.c
+++ b/src/machine/machined.c
@@ -53,7 +53,7 @@ Manager *manager_new(void) {
return NULL;
}
- r = sd_event_new(&m->event);
+ r = sd_event_default(&m->event);
if (r < 0) {
manager_free(m);
return NULL;
diff --git a/src/network/networkd-manager.c b/src/network/networkd-manager.c
index 6a57a80147..8378e92a81 100644
--- a/src/network/networkd-manager.c
+++ b/src/network/networkd-manager.c
@@ -31,7 +31,7 @@ int manager_new(Manager **ret) {
if (!m)
return -ENOMEM;
- r = sd_event_new(&m->event);
+ r = sd_event_default(&m->event);
if (r < 0)
return r;
diff --git a/src/socket-proxy/socket-proxyd.c b/src/socket-proxy/socket-proxyd.c
index 56e660de57..8cba8e0679 100644
--- a/src/socket-proxy/socket-proxyd.c
+++ b/src/socket-proxy/socket-proxyd.c
@@ -626,7 +626,7 @@ int main(int argc, char *argv[]) {
if (r <= 0)
goto finish;
- r = sd_event_new(&event);
+ r = sd_event_default(&event);
if (r < 0) {
log_error("Failed to allocate event loop: %s", strerror(-r));
goto finish;
diff --git a/src/systemd/sd-event.h b/src/systemd/sd-event.h
index 8262e139ac..919b661d61 100644
--- a/src/systemd/sd-event.h
+++ b/src/systemd/sd-event.h
@@ -72,6 +72,8 @@ typedef int (*sd_defer_handler_t)(sd_event_source *s, void *userdata);
typedef int (*sd_prepare_handler_t)(sd_event_source *s, void *userdata);
typedef int (*sd_quit_handler_t)(sd_event_source *s, void *userdata);
+int sd_event_default(sd_event **e);
+
int sd_event_new(sd_event **e);
sd_event* sd_event_ref(sd_event *e);
sd_event* sd_event_unref(sd_event *e);
@@ -88,15 +90,17 @@ int sd_event_run(sd_event *e, uint64_t timeout);
int sd_event_loop(sd_event *e);
int sd_event_get_state(sd_event *e);
+int sd_event_get_tid(sd_event *e, pid_t *tid);
int sd_event_get_quit(sd_event *e);
int sd_event_request_quit(sd_event *e);
int sd_event_get_now_realtime(sd_event *e, uint64_t *usec);
int sd_event_get_now_monotonic(sd_event *e, uint64_t *usec);
-sd_event *sd_event_get(sd_event_source *s);
sd_event_source* sd_event_source_ref(sd_event_source *s);
sd_event_source* sd_event_source_unref(sd_event_source *s);
+sd_event *sd_event_get(sd_event_source *s);
+
int sd_event_source_set_prepare(sd_event_source *s, sd_prepare_handler_t callback);
int sd_event_source_get_pending(sd_event_source *s);
int sd_event_source_get_priority(sd_event_source *s, int *priority);
diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c
index 163b2761ac..8fb7f6e806 100644
--- a/src/timedate/timedated.c
+++ b/src/timedate/timedated.c
@@ -854,7 +854,7 @@ int main(int argc, char *argv[]) {
goto finish;
}
- r = sd_event_new(&event);
+ r = sd_event_default(&event);
if (r < 0) {
log_error("Failed to allocate event loop: %s", strerror(-r));
goto finish;