vVL2-0001-injection_points-extract-condition-header.patch

From f03ed5938323b2a7fbddbd60f33ad8d80e3fc58e Mon Sep 17 00:00:00 2001
From: Vlad Lesin <vladlesin@gmail.com>
Date: Fri, 15 May 2026 09:32:54 +0300
Subject: [PATCH 1/5] injection_points: extract InjectionPointCondition into a
 header

Move InjectionPointConditionType and InjectionPointCondition from
injection_points.c into a new injection_point_condition.h, and include
that header from injection_points.c.  No functional change.

The struct is the private_data layout used when attaching an injection
point with a scoping condition: the producer fills it in and passes
its address to InjectionPointAttach(); the registered callback
(injection_wait / injection_error / injection_notice in
injection_points.c) receives the pointer back and consults
injection_point_allowed() to decide whether to fire.  Having a single
header keeps both sides of that layout contract in one place so a
future field addition lands in exactly one source location.
---
 .../injection_point_condition.h               | 37 +++++++++++++++++++
 .../injection_points/injection_points.c       | 26 +------------
 2 files changed, 39 insertions(+), 24 deletions(-)
 create mode 100644 src/test/modules/injection_points/injection_point_condition.h

diff --git a/src/test/modules/injection_points/injection_point_condition.h b/src/test/modules/injection_points/injection_point_condition.h
new file mode 100644
index 00000000000..b469601849b
--- /dev/null
+++ b/src/test/modules/injection_points/injection_point_condition.h
@@ -0,0 +1,37 @@
+/*-------------------------------------------------------------------------
+ *
+ * injection_point_condition.h
+ *		Shared layout for the InjectionPointCondition private_data blob
+ *
+ * Used as private_data when attaching an injection_wait callback to scope
+ * the wait to a specific backend.  Defined in a header so the producers
+ * (injection_points.c's injection_points_attach() and regress_prockill.c's
+ * prockill_attach_injection_wait_pid()) and the consumer
+ * (injection_points.c's injection_wait via injection_point_allowed())
+ * agree on the layout.
+ *
+ * Copyright (c) 2025-2026, PostgreSQL Global Development Group
+ *
+ * src/test/modules/injection_points/injection_point_condition.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef INJECTION_POINT_CONDITION_H
+#define INJECTION_POINT_CONDITION_H
+
+typedef enum InjectionPointConditionType
+{
+	INJ_CONDITION_ALWAYS = 0,	/* always run */
+	INJ_CONDITION_PID,			/* PID restriction */
+} InjectionPointConditionType;
+
+typedef struct InjectionPointCondition
+{
+	/* Type of the condition */
+	InjectionPointConditionType type;
+
+	/* ID of the process where the injection point is allowed to run */
+	int			pid;
+} InjectionPointCondition;
+
+#endif							/* INJECTION_POINT_CONDITION_H */
diff --git a/src/test/modules/injection_points/injection_points.c b/src/test/modules/injection_points/injection_points.c
index 0f1af513673..fb7a7d477cc 100644
--- a/src/test/modules/injection_points/injection_points.c
+++ b/src/test/modules/injection_points/injection_points.c
@@ -34,36 +34,14 @@
 #include "utils/tuplestore.h"
 #include "utils/wait_event.h"
 
+#include "injection_point_condition.h"
+
 PG_MODULE_MAGIC;
 
 /* Maximum number of waits usable in injection points at once */
 #define INJ_MAX_WAIT	8
 #define INJ_NAME_MAXLEN	64
 
-/*
- * Conditions related to injection points.  This tracks in shared memory the
- * runtime conditions under which an injection point is allowed to run,
- * stored as private_data when an injection point is attached, and passed as
- * argument to the callback.
- *
- * If more types of runtime conditions need to be tracked, this structure
- * should be expanded.
- */
-typedef enum InjectionPointConditionType
-{
-	INJ_CONDITION_ALWAYS = 0,	/* always run */
-	INJ_CONDITION_PID,			/* PID restriction */
-} InjectionPointConditionType;
-
-typedef struct InjectionPointCondition
-{
-	/* Type of the condition */
-	InjectionPointConditionType type;
-
-	/* ID of the process where the injection point is allowed to run */
-	int			pid;
-} InjectionPointCondition;
-
 /*
  * List of injection points stored in TopMemoryContext attached
  * locally to this process.
-- 
2.43.0