Starts tracing: proc gets a line per message from now on (null stops). With regress, the
output is libpq's PQTRACE_SUPPRESS_TIMESTAMPS | PQTRACE_REGRESS_MODE: OIDs, process ids and the
server's source locations are replaced by fixed text, and an error's length by NN, so a trace
is the same from one server run to the next. Without it they show as they are.
- c: the connection to trace.
- proc: gets each line; null stops tracing.
- data: kept in the connection's
trace_data, forprocto read. - regress: replace values that change between runs with fixed text.
F<TAB>21<TAB>Parse<TAB> "" "SELECT $1" 1 NNNN
B<TAB>5<TAB>ReadyForQuery<TAB> IF is a message the client sent, B one it received. Messages sent while connecting are not
traced, as the trace starts after connect.
set_trace :: (
c: *Connection,
proc: Trace_Proc,
data: *void = null,
regress := true
)Starts tracing: proc gets a line per message from now on (null stops). With regress, the
output is libpq's PQTRACE_SUPPRESS_TIMESTAMPS | PQTRACE_REGRESS_MODE: OIDs, process ids and the
server's source locations are replaced by fixed text, and an error's length by NN, so a trace
is the same from one server run to the next. Without it they show as they are.
F is a message the client sent, B one it received. Messages sent while connecting are not
traced, as the trace starts after connect.
Parameters
- c: *Connection
- the connection to trace.
- proc: Trace_Proc
- gets each line; null stops tracing.
- data: *void
- kept in the connection's
trace_data, forprocto read. - regress := true
- replace values that change between runs with fixed text.
F<TAB>21<TAB>Parse<TAB> "" "SELECT $1" 1 NNNN
B<TAB>5<TAB>ReadyForQuery<TAB> I