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Reworking thread termination logic.

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Turns out the finish methods weren't called correctly, caused by a
mess up with method names which all sounded too similar and the wrong
one ended up being called. I've reworked this by changing the
thread/writer/reader interfaces, which actually also simplifies them
by getting rid of the requirement for writer backends to call their
parent methods (i.e., less opportunity for errors).

This commit also includes the following (because I noticed the problem
above when working on some of these):

     - The ASCII log writer now includes "#start <timestamp>" and
      "#end <timestamp> lines in the each file. The latter supersedes
      Bernhard's "EOF" patch.

      This required a number of tests updates. The standard canonifier
      removes the timestamps, but some tests compare files directly,
      which doesn't work if they aren't printing out the same
      timestamps (like the comm tests).

     - The above required yet another change to the writer API to
       network_time to methods.

     - Renamed ASCII logger "header" options to "meta".

     - Fixes #763 "Escape # when first character in log file line".

All btests pass for me on Linux FC15. Will try MacOS next.
This commit is contained in:
Robin Sommer 2012-07-12 13:44:24 -07:00
parent 50f5f8131d
commit f73eb3b086
37 changed files with 313 additions and 223 deletions
Download patch file Download diff file Expand all files Collapse all files

13
src/logging/writers/Ascii.h
View file

@ -26,13 +26,16 @@ protected:
virtual bool DoSetBuf(bool enabled);
virtual bool DoRotate(string rotated_path, double open,
double close, bool terminating);
virtual bool DoFlush();
virtual bool DoFinish();
virtual bool DoFlush(double network_time);
virtual bool DoFinish(double network_time);
virtual bool DoHeartbeat(double network_time, double current_time);
private:
bool IsSpecial(string path) { return path.find("/dev/") == 0; }
bool DoWriteOne(ODesc* desc, threading::Value* val, const threading::Field* field);
bool WriteHeaderField(const string& key, const string& value);
void CloseFile(double t);
string Timestamp(double t);
FILE* file;
string fname;
@ -40,7 +43,7 @@ private:
// Options set from the script-level.
bool output_to_stdout;
bool include_header;
bool include_meta;
char* separator;
int separator_len;
@ -54,8 +57,8 @@ private:
char* unset_field;
int unset_field_len;
char* header_prefix;
int header_prefix_len;
char* meta_prefix;
int meta_prefix_len;
};
}