Hi, We trying to port PostgreSQL to Windows x64. It based on Windows 64bit patch which are posted before.
http://archives.postgresql.org/pgsql-hackers/2008-07/msg00440.php Is there someone working in progress about it ? This patch works if total activity memory is less than 2GB, but when memory goes over 2GB there is a problem. (eg) in postgresql.conf, set shared_buffes to over 2GB. There are still following problems, I thought. 1. LLP64 pointer operation 2. over 4GB shared memory allocation 3. reattch to shared memory --- 1. LLP64 Currently PostgreSQL use 'long' for pointer calculation. (eg) TYPEALIGN() in src/include/c.h We intend to replace 'long' to 'intptr_t' in such calculation. Todo for this. * check and add typedef 'intptr_t', in configure and port.h * fix 'long' to 'intptr_t' in pointer calculation. Microsoft C++ compiler with /Wp64 option will outputs warning about pointer assignments that losts data. That helps us to locate source code. (the past messages) http://archives.postgresql.org/pgsql-hackers/2008-07/msg00437.php http://archives.postgresql.org/pgsql-hackers/2008-07/msg00081.php http://archives.postgresql.org/pgsql-hackers/2008-07/msg00105.php 2. shared memory Shared buffer allocation function does not care about >=4GB memory. # PGSharedMemoryCreate() in src/backend/port/win32_shmem.c We think it can easily to fix. 3. "counld not reattach to shared memory" problem There is another problem, and that also occurs under Windows 32bit. http://archives.postgresql.org/pgsql-hackers/2009-05/msg00097.php http://archives.postgresql.org/pgsql-hackers/2009-05/msg00144.php Since the last message, I didn't confirm any progress. We don't have good solution for it. We thought that following VirtualAllocEx() method was good, but did somebody try to test ? http://archives.postgresql.org/pgsql-general/2007-08/msg01592.php Thanks. -- Tsutomu Yamada SRA OSS, Inc. Japan -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
