From a002041ec2f53723425c972e235b9a88328459ab Mon Sep 17 00:00:00 2001
From: "Wolfgang (Blub) Bumiller" <blub@speed.at>
Date: Fri, 24 Aug 2012 23:00:47 +0200
Subject: [PATCH] -benchmark option to take the time in a rather simple way

---
 main.c | 38 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/main.c b/main.c
index 4b850d0..2980f8b 100644
--- a/main.c
+++ b/main.c
@@ -23,6 +23,8 @@
 #include "gmqcc.h"
 #include "lexer.h"
 
+#include <time.h>
+
 uint32_t    opts_flags[1 + (COUNT_FLAGS / 32)];
 uint32_t    opts_warn [1 + (COUNT_WARNINGS / 32)];
 
@@ -34,6 +36,7 @@ bool        opts_memchk   = false;
 bool        opts_dump     = false;
 bool        opts_werror   = false;
 bool        opts_forcecrc = false;
+bool        opts_benchmark    = false;
 
 uint16_t    opts_forced_crc;
 
@@ -205,6 +208,10 @@ static bool options_parse(int argc, char **argv) {
                 opts_memchk = true;
                 continue;
             }
+            if (!strcmp(argv[0]+1, "benchmark")) {
+                opts_benchmark = true;
+                continue;
+            }
 
             switch (argv[0][1]) {
                 /* -h, show usage but exit with 0 */
@@ -392,6 +399,8 @@ int main(int argc, char **argv) {
     int retval = 0;
     bool opts_output_free = false;
 
+    struct timespec ta, tb, tc;
+
     app_name = argv[0];
 
     /* default options / warn flags */
@@ -445,6 +454,8 @@ int main(int argc, char **argv) {
     if (items_elements) {
         printf("Mode: manual\n");
         printf("There are %lu items to compile:\n", (unsigned long)items_elements);
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &ta);
         for (itr = 0; itr < items_elements; ++itr) {
             printf("  item: %s (%s)\n",
                    items_data[itr].filename,
@@ -459,7 +470,12 @@ int main(int argc, char **argv) {
             }
         }
 
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &tb);
         parser_finish(opts_output);
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &tc);
+
     } else {
         FILE *src;
         char *line;
@@ -485,6 +501,8 @@ int main(int argc, char **argv) {
             opts_output_free = true;
         }
 
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &ta);
         while (progs_nextline(&line, &linelen, src)) {
             if (!line[0] || (line[0] == '/' && line[1] == '/'))
                 continue;
@@ -495,12 +513,32 @@ int main(int argc, char **argv) {
             }
         }
 
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &tb);
         parser_finish(opts_output);
+        if (opts_benchmark)
+            clock_gettime(CLOCK_MONOTONIC, &tc);
 
 srcdone:
         fclose(src);
         mem_d(line);
     }
+    if (opts_benchmark)
+    {
+        printf("started parsing at: %lu:%09lu\n", (unsigned long)ta.tv_sec, (unsigned long)ta.tv_nsec);
+        printf("started codegen at: %lu:%09lu\n", (unsigned long)tb.tv_sec, (unsigned long)tb.tv_nsec);
+        printf("       finished at: %lu:%09lu\n", (unsigned long)tc.tv_sec, (unsigned long)tc.tv_nsec);
+        {
+            size_t sec = tb.tv_sec - ta.tv_sec;
+            size_t nsec = (tb.tv_nsec + sec * 1000000000L) - ta.tv_nsec;
+            printf("Parsing took %lu\n", (unsigned long)nsec);
+        }
+        {
+            size_t sec = tc.tv_sec - tb.tv_sec;
+            size_t nsec = (tc.tv_nsec + sec * 1000000000L) - tb.tv_nsec;
+            printf("Codegen took %lu\n", (unsigned long)nsec);
+        }
+    }
 
     /* stuff */
 
-- 
2.39.2