[FFmpeg-devel] [PATCH 1/7] checkasm: add csv/tsv bench output

["J. Dekker" <jdek@itanimul.li>]

When collecting performance information from checkasm it is common
to parse the output for use in graphs to compare vs different
architectures.

Signed-off-by: J. Dekker <jdek@itanimul.li>
---
 tests/checkasm/checkasm.c | 22 ++++++++++++++++++++--
 1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/tests/checkasm/checkasm.c b/tests/checkasm/checkasm.c
index 58597d3888..f82ee0864f 100644
--- a/tests/checkasm/checkasm.c
+++ b/tests/checkasm/checkasm.c
@@ -362,6 +362,8 @@ static struct {
     const char *cpu_flag_name;
     const char *test_name;
     int verbose;
+    int csv;
+    int tsv;
     volatile sig_atomic_t catch_signals;
 } state;
 
@@ -586,7 +588,14 @@ static void print_benchs(CheckasmFunc *f)
                 CheckasmPerf *p = &v->perf;
                 if (p->iterations) {
                     int decicycles = (10*p->cycles/p->iterations - state.nop_time) / 4;
-                    printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
+                    if (state.csv) {
+                        const char sep = state.tsv ? '\t' : ',';
+                        printf("%s%c%s%c%d.%d\n", f->name, sep,
+                               cpu_suffix(v->cpu), sep,
+                               decicycles / 10, decicycles % 10);
+                    } else {
+                        printf("%s_%s: %d.%d\n", f->name, cpu_suffix(v->cpu), decicycles/10, decicycles%10);
+                    }
                 }
             } while ((v = v->next));
         }
@@ -829,7 +838,12 @@ static void bench_uninit(void)
 static int usage(const char *path)
 {
     fprintf(stderr,
-            "Usage: %s [--bench] [--runs=<ptwo>] [--test=<pattern>] [--verbose] [seed]\n",
+            "Usage: %s [options...] [seed]\n"
+            "  --test=<pattern> Run specific test.\n"
+            "  --bench          Run benchmark.\n"
+            "  --csv, --tsv     Output benchmark results in CSV or TSV format.\n"
+            "  --runs=<ptwo>    Manual number of benchmark iterations to run 2**<ptwo>.\n"
+            "  --verbose        Increase verbosity.\n",
             path);
     return 1;
 }
@@ -877,6 +891,10 @@ int main(int argc, char *argv[])
                 state.bench_pattern = "";
         } else if (!strncmp(arg, "--test=", 7)) {
             state.test_name = arg + 7;
+        } else if (!strcmp(arg, "--csv")) {
+            state.csv = 1; state.tsv = 0;
+        } else if (!strcmp(arg, "--tsv")) {
+            state.csv = 1; state.tsv = 1;
         } else if (!strcmp(arg, "--verbose") || !strcmp(arg, "-v")) {
             state.verbose = 1;
         } else if (!strncmp(arg, "--runs=", 7)) {
-- 
2.45.1

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