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| author | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2015-05-08 21:58:57 +0300 |
|---|---|---|
| committer | Heikki Linnakangas <heikki.linnakangas@iki.fi> | 2015-05-08 21:58:57 +0300 |
| commit | 179cdd098196338880bdbb39c39a788abdad4dd8 (patch) | |
| tree | ba94b277b326f1599d2835f0fe50b791016dd532 /src/include/access/xlog_internal.h | |
| parent | 16c73e773bc5f2eee6a71c5ec311b8691bf9e832 (diff) | |
| download | postgresql-179cdd098196338880bdbb39c39a788abdad4dd8.tar.gz postgresql-179cdd098196338880bdbb39c39a788abdad4dd8.zip | |
Add macros to check if a filename is a WAL segment or other such file.
We had many instances of the strlen + strspn combination to check for that.
This makes the code a bit easier to read.
Diffstat (limited to 'src/include/access/xlog_internal.h')
| -rw-r--r-- | src/include/access/xlog_internal.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/include/access/xlog_internal.h b/src/include/access/xlog_internal.h index 75cf435e90f..714850ca68c 100644 --- a/src/include/access/xlog_internal.h +++ b/src/include/access/xlog_internal.h @@ -142,6 +142,14 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader; (uint32) ((logSegNo) / XLogSegmentsPerXLogId), \ (uint32) ((logSegNo) % XLogSegmentsPerXLogId)) +#define IsXLogFileName(fname) \ + (strlen(fname) == 24 && strspn(fname, "0123456789ABCDEF") == 24) + +#define IsPartialXLogFileName(fname) \ + (strlen(fname) == 24 + strlen(".partial") && \ + strspn(fname, "0123456789ABCDEF") == 24 && \ + strcmp((fname) + 24, ".partial") == 0) + #define XLogFromFileName(fname, tli, logSegNo) \ do { \ uint32 log; \ @@ -158,6 +166,11 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader; #define TLHistoryFileName(fname, tli) \ snprintf(fname, MAXFNAMELEN, "%08X.history", tli) +#define IsTLHistoryFileName(fname) \ + (strlen(fname) == 8 + strlen(".history") && \ + strspn(fname, "0123456789ABCDEF") == 8 && \ + strcmp((fname) + 8, ".history") == 0) + #define TLHistoryFilePath(path, tli) \ snprintf(path, MAXPGPATH, XLOGDIR "/%08X.history", tli) @@ -169,6 +182,11 @@ typedef XLogLongPageHeaderData *XLogLongPageHeader; (uint32) ((logSegNo) / XLogSegmentsPerXLogId), \ (uint32) ((logSegNo) % XLogSegmentsPerXLogId), offset) +#define IsBackupHistoryFileName(fname) \ + (strlen(fname) > 24 && \ + strspn(fname, "0123456789ABCDEF") == 24 && \ + strcmp((fname) + strlen(fname) - strlen(".backup"), ".backup") == 0) + #define BackupHistoryFilePath(path, tli, logSegNo, offset) \ snprintf(path, MAXPGPATH, XLOGDIR "/%08X%08X%08X.%08X.backup", tli, \ (uint32) ((logSegNo) / XLogSegmentsPerXLogId), \ |