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-a
-
--no-static
-
The `-a' option causes
gprof
to suppress the printing of
statically declared (private) functions. (These are functions whose
names are not listed as global, and which are not visible outside the
file/function/block where they were defined.) Time spent in these
functions, calls to/from them, etc, will all be attributed to the
function that was loaded directly before it in the executable file.
This option affects both the flat profile and the call graph.
-c
-
--static-call-graph
-
The `-c' option causes the call graph of the program to be
augmented by a heuristic which examines the text space of the object
file and identifies function calls in the binary machine code.
Since normal call graph records are only generated when functions are
entered, this option identifies children that could have been called,
but never were. Calls to functions that were not compiled with
profiling enabled are also identified, but only if symbol table
entries are present for them.
Calls to dynamic library routines are typically not found
by this option.
Parents or children identified via this heuristic
are indicated in the call graph with call counts of `0'.
-D
-
--ignore-non-functions
-
The `-D' option causes
gprof
to ignore symbols which
are not known to be functions. This option will give more accurate
profile data on systems where it is supported (Solaris and HPUX for
example).
-k from/to
-
The `-k' option allows you to delete from the call graph any arcs from
symbols matching symspec from to those matching symspec to.
-l
-
--line
-
The `-l' option enables line-by-line profiling, which causes
histogram hits to be charged to individual source code lines,
instead of functions.
If the program was compiled with basic-block counting enabled,
this option will also identify how many times each line of
code was executed.
While line-by-line profiling can help isolate where in a large function
a program is spending its time, it also significantly increases
the running time of
gprof
, and magnifies statistical
inaccuracies.
See section Statistical Sampling Error.
-m num
-
--min-count=num
-
This option affects execution count output only.
Symbols that are executed less than num times are suppressed.
-n[symspec]
-
--time[=symspec]
-
The `-n' option causes
gprof
, in its call graph analysis,
to only propagate times for symbols matching symspec.
-N[symspec]
-
--no-time[=symspec]
-
The `-n' option causes
gprof
, in its call graph analysis,
not to propagate times for symbols matching symspec.
-z
-
--display-unused-functions
-
If you give the `-z' option,
gprof
will mention all
functions in the flat profile, even those that were never called, and
that had no time spent in them. This is useful in conjunction with the
`-c' option for discovering which routines were never called.
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