Add support for regexps in benchmark selection

run_benchmarks

@@ -5,6 +5,7 @@ import argparse
 import json
 import os
 import os.path
+import re
 import socket
 import subprocess
 import sys
@@ -279,7 +280,8 @@ def main():
     parser.add_argument('--duration', '-D', default=30, type=int,
                         help='duration of each benchmark in seconds')
     parser.add_argument('--benchmarks', type=str,
-                        help='comma-separated list of benchmarks to run')
+                        help='comma-separated list of benchmarks to run ' +
+                             '(regular expressions are supported)')
     parser.add_argument('--concurrency-levels', type=int, default=[10],
                         nargs='+',
                         help='a list of concurrency levels to use')
@@ -295,9 +297,10 @@ def main():
         os.mkdir(_socket)
 
     if args.benchmarks:
-        benchmarks_to_run = args.benchmarks.split(',')
+        benchmarks_to_run = [re.compile(b) for b in args.benchmarks.split(',')]
     else:
-        benchmarks_to_run = {b['name'] for b in benchmarks}
+        benchmarks_to_run = [re.compile(re.escape(b['name']))
+                             for b in benchmarks]
 
     benchmarks_data = []
 
@@ -322,7 +325,7 @@ def main():
               '--concurrency={}'.format(warmup_concurrency)]
 
     for benchmark in benchmarks:
-        if benchmark['name'] not in benchmarks_to_run:
+        if not any(b.match(benchmark['name']) for b in benchmarks_to_run):
             continue
 
         print(benchmark['title'])