65707ed9af
Previously, backtrace generation on Windows would return an "unsupported" message. With this commit, we rely on CaptureStackBackTrace() to capture the call stack and the DbgHelp API (SymFromAddrW, SymGetLineFromAddrW64) for symbol resolution. Symbol handler initialization (SymInitialize) is performed once per process and cached. If initialization fails, the report for it is returned as the backtrace output. The symbol handler is cleaned up via on_proc_exit() to release DbgHelp resources. The implementation provides symbol names, offsets, and addresses. When PDB files are available, it also includes source file names and line numbers. Symbol names and file paths are converted from UTF-16 to the database encoding using wchar2char(), which properly handles both UTF-8 and non-UTF-8 databases on Windows. When symbol information is unavailable or encoding conversion fails, it falls back to displaying raw addresses. The implementation uses the explicit UTF16 versions of the DbgHelp functions (SYMBOL_INFOW, SymFromAddrW, IMAGEHLP_LINEW64, SymGetLineFromAddrW64) rather than the generic versions. This allows us to rely on predictable encoding conversion, rather than using the haphazard ANSI codepage that we'd get otherwise. DbgHelp is apparently available on all Windows platforms we support, so there are no version number checks. Author: Bryan Green <dbryan.green@gmail.com> Reviewed-by: Euler Taveira <euler@eulerto.com> Reviewed-by: Jakub Wartak <jakub.wartak@enterprisedb.com> Reviewed-by: Greg Burd <greg@burd.me> Discussion: https://postgr.es/m/a692c0fe-caca-4c08-9c5d-debfd0ef2504@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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.