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Replace time_t with pg_time_t (same values, but always int64) in on-disk

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data structures and backend internal APIs.  This solves problems we've seen
recently with inconsistent layout of pg_control between machines that have
32-bit time_t and those that have already migrated to 64-bit time_t.  Also,
we can get out from under the problem that Windows' Unix-API emulation is not
consistent about the width of time_t.

There are a few remaining places where local time_t variables are used to hold
the current or recent result of time(NULL).  I didn't bother changing these
since they do not affect any cross-module APIs and surely all platforms will
have 64-bit time_t before overflow becomes an actual risk.  time_t should
be avoided for anything visible to extension modules, however.
This commit is contained in:
Tom Lane
2008-02-17 02:09:32 +00:00
parent ee7a6770f6
commit cd00406774
17 changed files with 98 additions and 91 deletions
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4
src/backend/utils/init/globals.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.104 2008/01/01 19:45:53 momjian Exp $
* $PostgreSQL: pgsql/src/backend/utils/init/globals.c,v 1.105 2008/02/17 02:09:29 tgl Exp $
*
* NOTES
* Globals used all over the place should be declared here and not
@@ -33,7 +33,7 @@ volatile uint32 InterruptHoldoffCount = 0;
volatile uint32 CritSectionCount = 0;
int MyProcPid;
time_t MyStartTime;
pg_time_t MyStartTime;
struct Port *MyProcPort;
long MyCancelKey;