diff --git a/src/backend/storage/ipc/procsignal.c b/src/backend/storage/ipc/procsignal.c
index c6a8d4611e..e116f4a1be 100644
--- a/src/backend/storage/ipc/procsignal.c
+++ b/src/backend/storage/ipc/procsignal.c
@@ -30,6 +30,7 @@
 #include "storage/shmem.h"
 #include "storage/sinval.h"
 #include "tcop/tcopprot.h"
+#include "utils/memutils.h"
 
 /*
  * The SIGUSR1 signal is multiplexed to support signaling multiple event
@@ -440,6 +441,20 @@ HandleProcSignalBarrierInterrupt(void)
 	/* latch will be set by procsignal_sigusr1_handler */
 }
 
+/*
+ * HandleProcSignalPrintMemoryContext
+ *
+ * Handle receipt of an interrupt indicating print memory context.
+ * Signal handler portion of interrupt handling.
+ */
+static void
+HandleProcSignalPrintMemoryContext(void)
+{
+	InterruptPending = true;
+	PrintMemoryContextPending = true;
+	/* latch will be set by procsignal_sigusr1_handler */
+}
+
 /*
  * Perform global barrier related interrupt checking.
  *
@@ -580,6 +595,25 @@ ProcessProcSignalBarrier(void)
 	ConditionVariableBroadcast(&MyProcSignalSlot->pss_barrierCV);
 }
 
+/*
+ * ProcessPrintMemoryContextInterrupt
+ *		The portion of print memory context interrupt handling that runs
+ *		outside of the signal handler.
+ */
+void
+ProcessPrintMemoryContextInterrupt(void)
+{
+	PrintMemoryContextPending = false;
+
+	ereport(LOG,
+		(errmsg("Printing memory contexts of PID %d", MyProcPid)));
+
+	/* A hard-wired limit on the number of children is usually good enough */
+	MemoryContextStatsDetail(TopMemoryContext, 100, false);
+
+}
+
+
 /*
  * If it turns out that we couldn't absorb one or more barrier types, either
  * because the barrier-processing functions returned false or due to an error,
@@ -675,6 +709,9 @@ procsignal_sigusr1_handler(SIGNAL_ARGS)
 	if (CheckProcSignal(PROCSIG_RECOVERY_CONFLICT_BUFFERPIN))
 		RecoveryConflictInterrupt(PROCSIG_RECOVERY_CONFLICT_BUFFERPIN);
 
+	if (CheckProcSignal(PROCSIG_PRINT_MEMORY_CONTEXT))
+		HandleProcSignalPrintMemoryContext();
+
 	SetLatch(MyLatch);
 
 	errno = save_errno;
diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 2b1b68109f..6fe47d1229 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -3295,6 +3295,9 @@ ProcessInterrupts(void)
 
 	if (ParallelMessagePending)
 		HandleParallelMessages();
+
+	if (PrintMemoryContextPending)
+		ProcessPrintMemoryContextInterrupt();
 }
 
 
diff --git a/src/backend/utils/adt/mcxtfuncs.c b/src/backend/utils/adt/mcxtfuncs.c
index c02fa47550..07a95dd115 100644
--- a/src/backend/utils/adt/mcxtfuncs.c
+++ b/src/backend/utils/adt/mcxtfuncs.c
@@ -61,7 +61,7 @@ PutMemoryContextsStatsTupleStore(Tuplestorestate *tupstore,
 
 	/* Examine the context itself */
 	memset(&stat, 0, sizeof(stat));
-	(*context->methods->stats) (context, NULL, (void *) &level, &stat);
+	(*context->methods->stats) (context, NULL, (void *) &level, &stat, true);
 
 	memset(values, 0, sizeof(values));
 	memset(nulls, 0, sizeof(nulls));
diff --git a/src/backend/utils/init/globals.c b/src/backend/utils/init/globals.c
index 73e0a672ae..32fe971386 100644
--- a/src/backend/utils/init/globals.c
+++ b/src/backend/utils/init/globals.c
@@ -34,6 +34,7 @@ volatile sig_atomic_t ClientConnectionLost = false;
 volatile sig_atomic_t IdleInTransactionSessionTimeoutPending = false;
 volatile sig_atomic_t IdleSessionTimeoutPending = false;
 volatile sig_atomic_t ProcSignalBarrierPending = false;
+volatile sig_atomic_t PrintMemoryContextPending = false;
 volatile uint32 InterruptHoldoffCount = 0;
 volatile uint32 QueryCancelHoldoffCount = 0;
 volatile uint32 CritSectionCount = 0;
diff --git a/src/backend/utils/mmgr/aset.c b/src/backend/utils/mmgr/aset.c
index ec6c130d0f..8e7fe09a0f 100644
--- a/src/backend/utils/mmgr/aset.c
+++ b/src/backend/utils/mmgr/aset.c
@@ -272,7 +272,8 @@ static Size AllocSetGetChunkSpace(MemoryContext context, void *pointer);
 static bool AllocSetIsEmpty(MemoryContext context);
 static void AllocSetStats(MemoryContext context,
 						  MemoryStatsPrintFunc printfunc, void *passthru,
-						  MemoryContextCounters *totals);
+						  MemoryContextCounters *totals,
+						  bool is_dst_stderr);
 
 #ifdef MEMORY_CONTEXT_CHECKING
 static void AllocSetCheck(MemoryContext context);
@@ -1336,11 +1337,12 @@ AllocSetIsEmpty(MemoryContext context)
  * printfunc: if not NULL, pass a human-readable stats string to this.
  * passthru: pass this pointer through to printfunc.
  * totals: if not NULL, add stats about this context into *totals.
+ * is_dst_stderr: is the output should be stderr or elog.
  */
 static void
 AllocSetStats(MemoryContext context,
 			  MemoryStatsPrintFunc printfunc, void *passthru,
-			  MemoryContextCounters *totals)
+			  MemoryContextCounters *totals, bool is_dst_stderr)
 {
 	AllocSet	set = (AllocSet) context;
 	Size		nblocks = 0;
@@ -1379,7 +1381,7 @@ AllocSetStats(MemoryContext context,
 				 "%zu total in %zd blocks; %zu free (%zd chunks); %zu used",
 				 totalspace, nblocks, freespace, freechunks,
 				 totalspace - freespace);
-		printfunc(context, passthru, stats_string);
+		printfunc(context, passthru, stats_string, is_dst_stderr);
 	}
 
 	if (totals)
diff --git a/src/backend/utils/mmgr/generation.c b/src/backend/utils/mmgr/generation.c
index 2b90034764..b286308aa4 100644
--- a/src/backend/utils/mmgr/generation.c
+++ b/src/backend/utils/mmgr/generation.c
@@ -155,7 +155,8 @@ static Size GenerationGetChunkSpace(MemoryContext context, void *pointer);
 static bool GenerationIsEmpty(MemoryContext context);
 static void GenerationStats(MemoryContext context,
 							MemoryStatsPrintFunc printfunc, void *passthru,
-							MemoryContextCounters *totals);
+							MemoryContextCounters *totals,
+							bool is_dst_stderr);
 
 #ifdef MEMORY_CONTEXT_CHECKING
 static void GenerationCheck(MemoryContext context);
@@ -665,6 +666,7 @@ GenerationIsEmpty(MemoryContext context)
  * printfunc: if not NULL, pass a human-readable stats string to this.
  * passthru: pass this pointer through to printfunc.
  * totals: if not NULL, add stats about this context into *totals.
+ * is_dst_stderr: is the output should be stderr or elog.
  *
  * XXX freespace only accounts for empty space at the end of the block, not
  * space of freed chunks (which is unknown).
@@ -672,7 +674,7 @@ GenerationIsEmpty(MemoryContext context)
 static void
 GenerationStats(MemoryContext context,
 				MemoryStatsPrintFunc printfunc, void *passthru,
-				MemoryContextCounters *totals)
+				MemoryContextCounters *totals, bool is_dst_stderr)
 {
 	GenerationContext *set = (GenerationContext *) context;
 	Size		nblocks = 0;
@@ -704,7 +706,7 @@ GenerationStats(MemoryContext context,
 				 "%zu total in %zd blocks (%zd chunks); %zu free (%zd chunks); %zu used",
 				 totalspace, nblocks, nchunks, freespace,
 				 nfreechunks, totalspace - freespace);
-		printfunc(context, passthru, stats_string);
+		printfunc(context, passthru, stats_string, is_dst_stderr);
 	}
 
 	if (totals)
diff --git a/src/backend/utils/mmgr/mcxt.c b/src/backend/utils/mmgr/mcxt.c
index 84472b9158..9ec0c0509d 100644
--- a/src/backend/utils/mmgr/mcxt.c
+++ b/src/backend/utils/mmgr/mcxt.c
@@ -23,6 +23,10 @@
 
 #include "mb/pg_wchar.h"
 #include "miscadmin.h"
+#include "storage/proc.h"
+#include "storage/procarray.h"
+#include "storage/procsignal.h"
+#include "utils/fmgrprotos.h"
 #include "utils/memdebug.h"
 #include "utils/memutils.h"
 
@@ -55,9 +59,11 @@ MemoryContext PortalContext = NULL;
 static void MemoryContextCallResetCallbacks(MemoryContext context);
 static void MemoryContextStatsInternal(MemoryContext context, int level,
 									   bool print, int max_children,
-									   MemoryContextCounters *totals);
+									   MemoryContextCounters *totals,
+									   bool is_dst_stderr);
 static void MemoryContextStatsPrint(MemoryContext context, void *passthru,
-									const char *stats_string);
+									const char *stats_string,
+									bool is_dst_stderr);
 
 /*
  * You should not do memory allocations within a critical section, because
@@ -487,6 +493,55 @@ MemoryContextMemAllocated(MemoryContext context, bool recurse)
 	return total;
 }
 
+/*
+ * pg_print_backend_memory_contexts
+ *		Print memory context of the specified backend process.
+ */
+Datum
+pg_print_backend_memory_contexts(PG_FUNCTION_ARGS)
+{
+	int		pid = PG_GETARG_INT32(0);
+	PGPROC		*proc = BackendPidGetProc(pid);
+
+	/*
+	 * Check whether the target process is PostgreSQL backend process.
+	 */
+	if (proc == NULL)
+	{
+		/*
+		 * According to the thread below, it might be better to
+		 * change this message.
+		 *
+		 * https://www.postgresql.org/message-id/CALj2ACW7Rr-R7mBcBQiXWPp%3DJV5chajjTdudLiF5YcpW-BmHhg%40mail.gmail.com
+		 *
+		 * Until the conclusion of the discussion, output the same
+		 * message as pg_cancel_backend().
+		 */
+		ereport(WARNING,
+				(errmsg("PID %d is not a PostgreSQL server process", pid)));
+
+		PG_RETURN_BOOL(false);
+	}
+
+	/* Only allow superusers to signal superuser-owned backends. */
+	if (superuser_arg(proc->roleId) && !superuser())
+	{
+		ereport(WARNING,
+				(errmsg("must be a superuser to print memory contexts")));
+		PG_RETURN_BOOL(false);
+	}
+
+	if(!SendProcSignal(pid, PROCSIG_PRINT_MEMORY_CONTEXT, InvalidBackendId))
+		PG_RETURN_BOOL(true);
+	else
+	{
+		ereport(WARNING,
+				(errmsg("failed to send signal: %m")));
+
+		PG_RETURN_BOOL(false);
+	}
+}
+
 /*
  * MemoryContextStats
  *		Print statistics about the named context and all its descendants.
@@ -499,7 +554,7 @@ void
 MemoryContextStats(MemoryContext context)
 {
 	/* A hard-wired limit on the number of children is usually good enough */
-	MemoryContextStatsDetail(context, 100);
+	MemoryContextStatsDetail(context, 100, true);
 }
 
 /*
@@ -508,19 +563,28 @@ MemoryContextStats(MemoryContext context)
  * Entry point for use if you want to vary the number of child contexts shown.
  */
 void
-MemoryContextStatsDetail(MemoryContext context, int max_children)
+MemoryContextStatsDetail(MemoryContext context, int max_children, bool is_dst_stderr)
 {
 	MemoryContextCounters grand_totals;
 
 	memset(&grand_totals, 0, sizeof(grand_totals));
 
-	MemoryContextStatsInternal(context, 0, true, max_children, &grand_totals);
+	MemoryContextStatsInternal(context, 0, true, max_children, &grand_totals, is_dst_stderr);
 
-	fprintf(stderr,
-			"Grand total: %zu bytes in %zd blocks; %zu free (%zd chunks); %zu used\n",
-			grand_totals.totalspace, grand_totals.nblocks,
-			grand_totals.freespace, grand_totals.freechunks,
-			grand_totals.totalspace - grand_totals.freespace);
+	if (is_dst_stderr)
+		fprintf(stderr,
+				"Grand total: %zu bytes in %zd blocks; %zu free (%zd chunks); %zu used\n",
+				grand_totals.totalspace, grand_totals.nblocks,
+				grand_totals.freespace, grand_totals.freechunks,
+				grand_totals.totalspace - grand_totals.freespace);
+	else
+		ereport(LOG_SERVER_ONLY,
+				(errhidestmt(true),
+				errhidecontext(true),
+				errmsg_internal("Grand total: %zu bytes in %zd blocks; %zu free (%zd chunks); %zu used",
+				grand_totals.totalspace, grand_totals.nblocks,
+				grand_totals.freespace, grand_totals.freechunks,
+				grand_totals.totalspace - grand_totals.freespace)));
 }
 
 /*
@@ -533,7 +597,8 @@ MemoryContextStatsDetail(MemoryContext context, int max_children)
 static void
 MemoryContextStatsInternal(MemoryContext context, int level,
 						   bool print, int max_children,
-						   MemoryContextCounters *totals)
+						   MemoryContextCounters *totals,
+						   bool is_dst_stderr)
 {
 	MemoryContextCounters local_totals;
 	MemoryContext child;
@@ -545,7 +610,7 @@ MemoryContextStatsInternal(MemoryContext context, int level,
 	context->methods->stats(context,
 							print ? MemoryContextStatsPrint : NULL,
 							(void *) &level,
-							totals);
+							totals, is_dst_stderr);
 
 	/*
 	 * Examine children.  If there are more than max_children of them, we do
@@ -560,11 +625,13 @@ MemoryContextStatsInternal(MemoryContext context, int level,
 		if (ichild < max_children)
 			MemoryContextStatsInternal(child, level + 1,
 									   print, max_children,
-									   totals);
+									   totals,
+									   is_dst_stderr);
 		else
 			MemoryContextStatsInternal(child, level + 1,
 									   false, max_children,
-									   &local_totals);
+									   &local_totals,
+									   is_dst_stderr);
 	}
 
 	/* Deal with excess children */
@@ -574,16 +641,31 @@ MemoryContextStatsInternal(MemoryContext context, int level,
 		{
 			int			i;
 
-			for (i = 0; i <= level; i++)
-				fprintf(stderr, "  ");
-			fprintf(stderr,
-					"%d more child contexts containing %zu total in %zd blocks; %zu free (%zd chunks); %zu used\n",
-					ichild - max_children,
-					local_totals.totalspace,
-					local_totals.nblocks,
-					local_totals.freespace,
-					local_totals.freechunks,
-					local_totals.totalspace - local_totals.freespace);
+			if (is_dst_stderr)
+			{
+				for (i = 0; i <= level; i++)
+					fprintf(stderr, "  ");
+				fprintf(stderr,
+						"%d more child contexts containing %zu total in %zd blocks; %zu free (%zd chunks); %zu used\n",
+						ichild - max_children,
+						local_totals.totalspace,
+						local_totals.nblocks,
+						local_totals.freespace,
+						local_totals.freechunks,
+						local_totals.totalspace - local_totals.freespace);
+			}
+			else
+				ereport(LOG_SERVER_ONLY,
+						(errhidestmt(true),
+						errhidecontext(true),
+						errmsg_internal("level: %d %d more child contexts containing %zu total in %zd blocks; %zu free (%zd chunks); %zu used",
+						level,
+						ichild - max_children,
+						local_totals.totalspace,
+						local_totals.nblocks,
+						local_totals.freespace,
+						local_totals.freechunks,
+						local_totals.totalspace - local_totals.freespace)));
 		}
 
 		if (totals)
@@ -605,12 +687,14 @@ MemoryContextStatsInternal(MemoryContext context, int level,
  */
 static void
 MemoryContextStatsPrint(MemoryContext context, void *passthru,
-						const char *stats_string)
+						const char *stats_string,
+						bool is_dst_stderr)
 {
 	int			level = *(int *) passthru;
 	const char *name = context->name;
 	const char *ident = context->ident;
 	int			i;
+	char		truncated_ident[110];
 
 	/*
 	 * It seems preferable to label dynahash contexts with just the hash table
@@ -623,11 +707,11 @@ MemoryContextStatsPrint(MemoryContext context, void *passthru,
 		ident = NULL;
 	}
 
-	for (i = 0; i < level; i++)
-		fprintf(stderr, "  ");
-	fprintf(stderr, "%s: %s", name, stats_string);
+	truncated_ident[0] = '\0';
+
 	if (ident)
 	{
+		char	delimiter[] = ": ";
 		/*
 		 * Some contexts may have very long identifiers (e.g., SQL queries).
 		 * Arbitrarily truncate at 100 bytes, but be careful not to break
@@ -637,24 +721,42 @@ MemoryContextStatsPrint(MemoryContext context, void *passthru,
 		int			idlen = strlen(ident);
 		bool		truncated = false;
 
+		strcat(truncated_ident, delimiter);
+
 		if (idlen > 100)
 		{
 			idlen = pg_mbcliplen(ident, idlen, 100);
 			truncated = true;
 		}
-		fprintf(stderr, ": ");
+
+		i = strlen(delimiter);
+
 		while (idlen-- > 0)
 		{
 			unsigned char c = *ident++;
 
 			if (c < ' ')
 				c = ' ';
-			fputc(c, stderr);
+			truncated_ident[i++] = c;
 		}
+		truncated_ident[i] = '\0';
+
 		if (truncated)
-			fprintf(stderr, "...");
+			strcat(truncated_ident, "...");
 	}
-	fputc('\n', stderr);
+
+	if (is_dst_stderr)
+	{
+		for (i = 0; i < level; i++)
+			fprintf(stderr, "  ");
+		fprintf(stderr, "%s: %s%s\n", name, stats_string, truncated_ident);
+	}
+	else
+		ereport(LOG_SERVER_ONLY,
+				(errhidestmt(true),
+				 errhidecontext(true),
+				 errmsg_internal("level: %d %s: %s%s",
+									 level, name, stats_string, truncated_ident)));
 }
 
 /*
diff --git a/src/backend/utils/mmgr/slab.c b/src/backend/utils/mmgr/slab.c
index 9213be7c95..479b08bedd 100644
--- a/src/backend/utils/mmgr/slab.c
+++ b/src/backend/utils/mmgr/slab.c
@@ -135,7 +135,8 @@ static Size SlabGetChunkSpace(MemoryContext context, void *pointer);
 static bool SlabIsEmpty(MemoryContext context);
 static void SlabStats(MemoryContext context,
 					  MemoryStatsPrintFunc printfunc, void *passthru,
-					  MemoryContextCounters *totals);
+					  MemoryContextCounters *totals,
+					  bool is_dst_stderr);
 #ifdef MEMORY_CONTEXT_CHECKING
 static void SlabCheck(MemoryContext context);
 #endif
@@ -632,11 +633,13 @@ SlabIsEmpty(MemoryContext context)
  * printfunc: if not NULL, pass a human-readable stats string to this.
  * passthru: pass this pointer through to printfunc.
  * totals: if not NULL, add stats about this context into *totals.
+ * is_dst_stderr: is the output should be stderr or elog.
  */
 static void
 SlabStats(MemoryContext context,
 		  MemoryStatsPrintFunc printfunc, void *passthru,
-		  MemoryContextCounters *totals)
+		  MemoryContextCounters *totals,
+		  bool is_dst_stderr)
 {
 	SlabContext *slab = castNode(SlabContext, context);
 	Size		nblocks = 0;
@@ -671,7 +674,7 @@ SlabStats(MemoryContext context,
 				 "%zu total in %zd blocks; %zu free (%zd chunks); %zu used",
 				 totalspace, nblocks, freespace, freechunks,
 				 totalspace - freespace);
-		printfunc(context, passthru, stats_string);
+		printfunc(context, passthru, stats_string, is_dst_stderr);
 	}
 
 	if (totals)
diff --git a/src/include/catalog/pg_proc.dat b/src/include/catalog/pg_proc.dat
index 93393fcfd4..0091806809 100644
--- a/src/include/catalog/pg_proc.dat
+++ b/src/include/catalog/pg_proc.dat
@@ -7917,6 +7917,12 @@
   proargnames => '{name, ident, parent, level, total_bytes, total_nblocks, free_bytes, free_chunks, used_bytes}',
   prosrc => 'pg_get_backend_memory_contexts' },
 
+# print memory context of specified backend
+{ oid => '4543', descr => 'print memory contexts of specified backend',
+  proname => 'pg_print_backend_memory_contexts',
+  provolatile => 'v', prorettype => 'bool',
+  proargtypes => 'int4', prosrc => 'pg_print_backend_memory_contexts' },
+
 # non-persistent series generator
 { oid => '1066', descr => 'non-persistent series generator',
   proname => 'generate_series', prorows => '1000',
diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
index 013850ac28..711d6c2089 100644
--- a/src/include/miscadmin.h
+++ b/src/include/miscadmin.h
@@ -84,6 +84,7 @@ extern PGDLLIMPORT volatile sig_atomic_t ProcDiePending;
 extern PGDLLIMPORT volatile sig_atomic_t IdleInTransactionSessionTimeoutPending;
 extern PGDLLIMPORT volatile sig_atomic_t IdleSessionTimeoutPending;
 extern PGDLLIMPORT volatile sig_atomic_t ProcSignalBarrierPending;
+extern PGDLLIMPORT volatile sig_atomic_t PrintMemoryContextPending;
 
 extern PGDLLIMPORT volatile sig_atomic_t ClientConnectionLost;
 
diff --git a/src/include/nodes/memnodes.h b/src/include/nodes/memnodes.h
index 9331ef80fd..87a8501c37 100644
--- a/src/include/nodes/memnodes.h
+++ b/src/include/nodes/memnodes.h
@@ -52,7 +52,8 @@ typedef struct MemoryContextCounters
  */
 
 typedef void (*MemoryStatsPrintFunc) (MemoryContext context, void *passthru,
-									  const char *stats_string);
+									  const char *stats_string,
+									  bool is_dst_stderr);
 
 typedef struct MemoryContextMethods
 {
@@ -66,7 +67,8 @@ typedef struct MemoryContextMethods
 	bool		(*is_empty) (MemoryContext context);
 	void		(*stats) (MemoryContext context,
 						  MemoryStatsPrintFunc printfunc, void *passthru,
-						  MemoryContextCounters *totals);
+						  MemoryContextCounters *totals,
+						  bool is_dst_stderr);
 #ifdef MEMORY_CONTEXT_CHECKING
 	void		(*check) (MemoryContext context);
 #endif
diff --git a/src/include/storage/procsignal.h b/src/include/storage/procsignal.h
index 4ae7dc33b8..0bfe290477 100644
--- a/src/include/storage/procsignal.h
+++ b/src/include/storage/procsignal.h
@@ -34,6 +34,8 @@ typedef enum
 	PROCSIG_PARALLEL_MESSAGE,	/* message from cooperating parallel backend */
 	PROCSIG_WALSND_INIT_STOPPING,	/* ask walsenders to prepare for shutdown  */
 	PROCSIG_BARRIER,			/* global barrier interrupt  */
+	PROCSIG_PRINT_MEMORY_CONTEXT,		/* ask specified backend to print the
+							memory context */
 
 	/* Recovery conflict reasons */
 	PROCSIG_RECOVERY_CONFLICT_DATABASE,
@@ -69,6 +71,7 @@ extern int	SendProcSignal(pid_t pid, ProcSignalReason reason,
 extern uint64 EmitProcSignalBarrier(ProcSignalBarrierType type);
 extern void WaitForProcSignalBarrier(uint64 generation);
 extern void ProcessProcSignalBarrier(void);
+extern void ProcessPrintMemoryContextInterrupt(void);
 
 extern void procsignal_sigusr1_handler(SIGNAL_ARGS);
 
diff --git a/src/include/utils/memutils.h b/src/include/utils/memutils.h
index 36aae4e51c..fd10f80eda 100644
--- a/src/include/utils/memutils.h
+++ b/src/include/utils/memutils.h
@@ -84,7 +84,8 @@ extern MemoryContext MemoryContextGetParent(MemoryContext context);
 extern bool MemoryContextIsEmpty(MemoryContext context);
 extern Size MemoryContextMemAllocated(MemoryContext context, bool recurse);
 extern void MemoryContextStats(MemoryContext context);
-extern void MemoryContextStatsDetail(MemoryContext context, int max_children);
+extern void MemoryContextStatsDetail(MemoryContext context, int max_children,
+										bool is_dst_stderr);
 extern void MemoryContextAllowInCriticalSection(MemoryContext context,
 												bool allow);