Author: trasz
Date: Wed Jul 4 13:28:43 2018
New Revision: 335938
URL: https://svnweb.freebsd.org/changeset/base/335938
Log:
Add getprogname(3) (ie null) benchmark.
Obtained from: CheriBSD
MFC after: 2 weeks
Sponsored by: DARPA, AFRL
Modified:
head/tools/tools/syscall_timing/syscall_timing.c
Modified: head/tools/tools/syscall_timing/syscall_timing.c
==============================================================================
--- head/tools/tools/syscall_timing/syscall_timing.c Wed Jul 4 13:28:16
2018 (r335937)
+++ head/tools/tools/syscall_timing/syscall_timing.c Wed Jul 4 13:28:43
2018 (r335938)
@@ -184,7 +184,24 @@ test_getpriority(uintmax_t num, uintmax_t int_arg, con
return (i);
}
+/*
+ * The point of this one is to figure out the cost of a call into libc,
+ * through PLT, and back.
+ */
uintmax_t
+test_getprogname(uintmax_t num, uintmax_t int_arg, const char *path)
+{
+ uintmax_t i;
+
+ benchmark_start();
+ BENCHMARK_FOREACH(i, num) {
+ (void)getprogname();
+ }
+ benchmark_stop();
+ return (i);
+}
+
+uintmax_t
test_pipe(uintmax_t num, uintmax_t int_arg, const char *path)
{
int fd[2], i;
@@ -678,6 +695,7 @@ static const struct test tests[] = {
{ "clock_gettime", test_clock_gettime },
{ "gettimeofday", test_gettimeofday },
{ "getpriority", test_getpriority },
+ { "getprogname", test_getprogname },
{ "pipe", test_pipe },
{ "select", test_select },
{ "socket_local_stream", test_socket_stream, .t_int = PF_LOCAL },
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