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1. Update our open() wrapper to check for NT's STATUS_DELETE_PENDING and translate it to Unix-like errors. This is done with RtlGetLastNtStatus(), which is dynamically loaded from ntdll. A new file win32ntdll.c centralizes lookup of NT functions, in case we decide to add more in the future. 2. Remove non-working code that was trying to do something similar for stat(), and just reuse the open() wrapper code. As a side effect, stat() also gains resilience against "sharing violation" errors. 3. Since stat() is used very early in process startup, remove the requirement that the Win32 signal event has been created before pgwin32_open_handle() is reached. Instead, teach pg_usleep() to fall back to a non-interruptible sleep if reached before the signal event is available. This could be back-patched, but for now it's in master only. The problem has apparently been with us for a long time and generated only a few complaints. Proposed patches trigger it more often, which led to this investigation and fix. Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: Alexander Lakhin <exclusion@gmail.com> Reviewed-by: Juan José Santamaría Flecha <juanjo.santamaria@gmail.com> Discussion: https://postgr.es/m/CA%2BhUKGJz_pZTF9mckn6XgSv69%2BjGwdgLkxZ6b3NWGLBCVjqUZA%40mail.gmail.com |
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PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.