commit 7634db5a0657129225869c3650a992f9cbe82fe4
author Elliott Hughes <enh@google.com> Mon Jun 09 18:35:21 2014 -0700
committer Elliott Hughes <enh@google.com> Mon Jun 09 18:35:21 2014 -0700
tree 617de0c37e9aa44208fe50173ca7809c98680ada
parent 2b8246fa755cf3e2828d702b6c27c2d238395fad

Add a couple more system call benchmarks.

Bug: 15387103
Change-Id: I13419ddf77d201fdbde4c784259c0cb0dcfb9a77

benchmarks/time_benchmark.cpp

diff --git a/benchmarks/time_benchmark.cpp b/benchmarks/time_benchmark.cpp
index 75132e5..3bf8c07 100644
--- a/benchmarks/time_benchmark.cpp
+++ b/benchmarks/time_benchmark.cpp
@@ -35,4 +35,17 @@
   StopBenchmarkTiming();
 }
 BENCHMARK(BM_time_localtime_tz);
+
 #endif
+
+static void BM_time_clock_gettime(int iters) {
+  StartBenchmarkTiming();
+
+  struct timespec t;
+  for (int i = 0; i < iters; ++i) {
+    clock_gettime(CLOCK_MONOTONIC, &t);
+  }
+
+  StopBenchmarkTiming();
+}
+BENCHMARK(BM_time_clock_gettime);

benchmarks/unistd_benchmark.cpp

diff --git a/benchmarks/unistd_benchmark.cpp b/benchmarks/unistd_benchmark.cpp
index 12b788a..f2c9d73 100644
--- a/benchmarks/unistd_benchmark.cpp
+++ b/benchmarks/unistd_benchmark.cpp
@@ -16,6 +16,7 @@
 
 #include "benchmark.h"
 
+#include <sys/syscall.h>
 #include <unistd.h>
 
 static void BM_unistd_getpid(int iters) {
@@ -39,3 +40,14 @@
   StopBenchmarkTiming();
 }
 BENCHMARK(BM_unistd_gettid);
+
+static void BM_unistd_gettid_syscall(int iters) {
+  StartBenchmarkTiming();
+
+  for (int i = 0; i < iters; ++i) {
+    syscall(__NR_gettid);
+  }
+
+  StopBenchmarkTiming();
+}
+BENCHMARK(BM_unistd_gettid_syscall);