first commit based on psycopg2 2.9 version

psycopg/libpq_support.h

@@ -0,0 +1,49 @@
+/* libpq_support.h - definitions for libpq_support.c
+ *
+ * Copyright (C) 2003-2019 Federico Di Gregorio <fog@debian.org>
+ * Copyright (C) 2020-2021 The Psycopg Team
+ *
+ * This file is part of psycopg.
+ *
+ * psycopg2 is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published
+ * by the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link this program with the OpenSSL library (or with
+ * modified versions of OpenSSL that use the same license as OpenSSL),
+ * and distribute linked combinations including the two.
+ *
+ * You must obey the GNU Lesser General Public License in all respects for
+ * all of the code used other than OpenSSL.
+ *
+ * psycopg2 is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
+ * License for more details.
+ */
+#ifndef PSYCOPG_LIBPQ_SUPPORT_H
+#define PSYCOPG_LIBPQ_SUPPORT_H 1
+
+#include "psycopg/config.h"
+
+/* type and constant definitions from internal postgres include */
+typedef uint64_t XLogRecPtr;
+
+/* have to use lowercase %x, as PyString_FromFormat can't do %X */
+#define XLOGFMTSTR "%x/%x"
+#define XLOGFMTARGS(x) ((uint32_t)((x) >> 32)), ((uint32_t)((x) & 0xFFFFFFFF))
+
+/* Julian-date equivalents of Day 0 in Unix and Postgres reckoning */
+#define UNIX_EPOCH_JDATE	2440588 /* == date2j(1970, 1, 1) */
+#define POSTGRES_EPOCH_JDATE	2451545 /* == date2j(2000, 1, 1) */
+
+#define SECS_PER_DAY	86400
+#define USECS_PER_SEC	1000000LL
+
+HIDDEN int64_t feGetCurrentTimestamp(void);
+HIDDEN void fe_sendint64(int64_t i, char *buf);
+HIDDEN int64_t fe_recvint64(char *buf);
+
+#endif /* !defined(PSYCOPG_LIBPQ_SUPPORT_H) */