1 files changed, 100 insertions, 0 deletions
diff --git a/testprogs/findalldevstest-perf.c b/testprogs/findalldevstest-perf.c
new file mode 100644
index 00000000..40875666
--- /dev/null
+++ b/testprogs/findalldevstest-perf.c
@@ -0,0 +1,100 @@
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#ifdef _WIN32
+  #include <winsock2.h>
+  #include <ws2tcpip.h>
+  #include <windows.h>
+#else
+  #include <unistd.h>
+  #include <sys/resource.h>
+#endif
+
+#include <pcap.h>
+
+#include "varattrs.h"
+#include "pcap/funcattrs.h"
+
+#ifdef _WIN32
+#include "portability.h"
+#endif
+
+int main(int argc _U_, char **argv _U_)
+{
+  pcap_if_t *alldevs;
+  int exit_status = 0;
+  char errbuf[PCAP_ERRBUF_SIZE+1];
+#ifdef _WIN32
+  FILETIME start_ktime, start_utime, end_ktime, end_utime;
+  FILETIME dummy1, dummy2;
+  ULARGE_INTEGER start_kticks, end_kticks, start_uticks, end_uticks;
+  ULONGLONG ktime, utime, tottime;
+#else
+  struct rusage start_rusage, end_rusage;
+  struct timeval ktime, utime, tottime;
+#endif
+
+#ifdef _WIN32
+  if (!GetProcessTimes(GetCurrentProcess(), &dummy1, &dummy2,
+                       &start_ktime, &start_utime))
+  {
+    fprintf(stderr, "GetProcessTimes() fails at start\n");
+    exit(1);
+  }
+  start_kticks.LowPart = start_ktime.dwLowDateTime;
+  start_kticks.HighPart = start_ktime.dwHighDateTime;
+  start_uticks.LowPart = start_utime.dwLowDateTime;
+  start_uticks.HighPart = start_utime.dwHighDateTime;
+#else
+  if (getrusage(RUSAGE_SELF, &start_rusage) == -1) {
+    fprintf(stderr, "getrusage() fails at start\n");
+    exit(1);
+  }
+#endif
+  for (int i = 0; i < 500; i++)
+  {
+    if (pcap_findalldevs(&alldevs, errbuf) == -1)
+    {
+      fprintf(stderr,"Error in pcap_findalldevs: %s\n",errbuf);
+      exit(1);
+    }
+    pcap_freealldevs(alldevs);
+  }
+
+#ifdef _WIN32
+  if (!GetProcessTimes(GetCurrentProcess(), &dummy1, &dummy2,
+                       &end_ktime, &end_utime))
+  {
+    fprintf(stderr, "GetProcessTimes() fails at end\n");
+    exit(1);
+  }
+  end_kticks.LowPart = end_ktime.dwLowDateTime;
+  end_kticks.HighPart = end_ktime.dwHighDateTime;
+  end_uticks.LowPart = end_utime.dwLowDateTime;
+  end_uticks.HighPart = end_utime.dwHighDateTime;
+  ktime = end_kticks.QuadPart - start_kticks.QuadPart;
+  utime = end_uticks.QuadPart - start_uticks.QuadPart;
+  tottime = ktime + utime;
+  printf("Total CPU secs: kernel %g, user %g, total %g\n",
+      ((double)ktime) / 10000000.0,
+      ((double)utime) / 10000000.0,
+      ((double)tottime) / 10000000.0);
+#else
+  if (getrusage(RUSAGE_SELF, &end_rusage) == -1) {
+    fprintf(stderr, "getrusage() fails at end\n");
+    exit(1);
+  }
+  timersub(&end_rusage.ru_stime, &start_rusage.ru_stime, &ktime);
+  timersub(&end_rusage.ru_utime, &start_rusage.ru_utime, &utime);
+  timeradd(&ktime, &utime, &tottime);
+  printf("Total CPU secs: kernel %g, user %g, total %g\n",
+      (double)ktime.tv_sec + ((double)ktime.tv_usec / 1000000.0),
+      (double)utime.tv_sec + ((double)utime.tv_usec / 1000000.0),
+      (double)tottime.tv_sec + ((double)tottime.tv_usec / 1000000.0));
+#endif
+  exit(exit_status);
+}