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66 lines
2.3 KiB
66 lines
2.3 KiB
From 71c1119e2fe9bc57e0efb07f784f616a98763028 Mon Sep 17 00:00:00 2001 |
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From: =?UTF-8?q?Renaud=20M=C3=A9trich?= <rmetrich@redhat.com> |
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Date: Fri, 2 Oct 2020 17:30:35 +0200 |
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Subject: [PATCH] unit: don't emit PropertiesChanged signal if adding a |
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dependency to a unit is a no-op |
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(cherry-picked from commit 5177cb0a9add4ae568cff6e6f7c2b3c77760c343) |
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Related: #1793527 |
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--- |
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src/core/unit.c | 16 +++++++++++++--- |
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1 file changed, 13 insertions(+), 3 deletions(-) |
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diff --git a/src/core/unit.c b/src/core/unit.c |
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index 18b1b898fd..e07c34bfc5 100644 |
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--- a/src/core/unit.c |
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+++ b/src/core/unit.c |
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@@ -2260,6 +2260,9 @@ int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_referen |
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}; |
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int r, q = 0, v = 0, w = 0; |
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Unit *orig_u = u, *orig_other = other; |
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+ /* Helper to know whether sending a notification is necessary or not: |
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+ * if the dependency is already there, no need to notify! */ |
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+ bool noop = true; |
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assert(u); |
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assert(d >= 0 && d < _UNIT_DEPENDENCY_MAX); |
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@@ -2298,13 +2301,16 @@ int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_referen |
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q = set_put(u->dependencies[d], other); |
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if (q < 0) |
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return q; |
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+ else if (q > 0) |
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+ noop = false; |
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if (inverse_table[d] != _UNIT_DEPENDENCY_INVALID && inverse_table[d] != d) { |
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v = set_put(other->dependencies[inverse_table[d]], u); |
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if (v < 0) { |
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r = v; |
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goto fail; |
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- } |
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+ } else if (v > 0) |
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+ noop = false; |
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} |
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if (add_reference) { |
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@@ -2312,14 +2318,18 @@ int unit_add_dependency(Unit *u, UnitDependency d, Unit *other, bool add_referen |
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if (w < 0) { |
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r = w; |
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goto fail; |
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- } |
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+ } else if (w > 0) |
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+ noop = false; |
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r = set_put(other->dependencies[UNIT_REFERENCED_BY], u); |
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if (r < 0) |
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goto fail; |
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+ else if (r > 0) |
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+ noop = false; |
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} |
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- unit_add_to_dbus_queue(u); |
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+ if (!noop) |
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+ unit_add_to_dbus_queue(u); |
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return 0; |
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fail:
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