tma sample

file_access.patch

diff --git a/samples/file_access.cpp b/samples/file_access.cpp
new file mode 100644
index 0000000..1ea02e3
--- /dev/null
+++ b/samples/file_access.cpp
@@ -0,0 +1,108 @@
+#include <ios>
+#include <iostream>
+#include <ostream>
+#include <iomanip>
+#include <stdexcept>
+
+#if defined (_WIN32)
+#  include <windows.h>
+#  include <stdio.h>
+#  include <fcntl.h>
+#  define executable "file_access.exe"
+#  define access _access
+#  define open _open
+#  define O_RDONLY _O_RDONLY
+#  include <sys/stat.h>
+#  define stat _stat
+#else
+#  include <sys/types.h>
+#  include <sys/stat.h>
+#  include <fcntl.h>
+#  include <unistd.h>
+#  define executable "file_access"
+#endif
+
+#include "hrtimer.h"
+
+int main(int argc, char* argv[])
+{
+    using namespace std;
+
+    double rv = 0.0;
+
+    // hires timer returning usecond times
+    HiRes::Timer<HiRes::us> t_us;
+
+    string headers[] = {"file exist", "file not exist"};
+    string file_path[] = {executable, "dummy"};
+    for (int i = 0; i < 2; i++) {
+        const char *file = file_path[i].c_str();
+        cout << endl << headers[i] << endl;
+        t_us.start();
+        access(file, 4);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "access() time: "
+                << rv << endl;
+
+        t_us.start();
+        int fd = open(file, O_RDONLY);
+        if (fd != -1) close(fd);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "open() time: "
+                << rv << endl;
+
+
+        struct stat statbuf;
+        t_us.start();
+        stat(file, &statbuf);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "stat() time: "
+                << rv << endl;
+
+#if defined(_WIN32)
+        OFSTRUCT openbuf;
+        t_us.start();
+        HFILE hFile = OpenFile(file, &openbuf, OF_READ);
+        if (hFile != HFILE_ERROR) CloseHandle((HANDLE) hFile);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "OpenFile() time: "
+                << rv << endl;
+
+        t_us.start();
+        HANDLE h = CreateFile(file, GENERIC_READ, FILE_SHARE_READ | FILE_SHARE_WRITE,
+                              NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+        if (h != INVALID_HANDLE_VALUE) CloseHandle(h);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "CreateFile() time: "
+                << rv << endl;
+
+        WIN32_FILE_ATTRIBUTE_DATA fileInfo;
+        t_us.start();
+        GetFileAttributesEx(file, GetFileExInfoStandard, &fileInfo);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "GetFileAttributesEx() time: "
+                << rv << endl;
+
+        t_us.start();
+        GetFileAttributes(file);
+        rv = t_us.stop();
+        cout    << left
+                << setw(30)
+                << "GetFileAttributes() time: "
+                << rv << endl;
+#endif
+    }
+
+    return 0;
+}
diff --git a/samples/wscript b/samples/wscript
index 0d69362..c6f457b 100644
--- a/samples/wscript
+++ b/samples/wscript
@@ -25,4 +25,12 @@ def build(bld):
         linkflags = my_linkflags,
         )
 
+    bld.program(
+        source = [ 'file_access.cpp' ],
+        includes = [ '../include' ],
+        target = 'file_access',
+        cxxflags = my_cxxflags,
+        linkflags = my_linkflags,
+        )
+
 # vim: ft=python ai ts=4 sw=4 sts=4 et

# Windows XP
file exist
access() time:                28.6633
open() time:                  97.6639
stat() time:                  219.292
OpenFile() time:              324.711
CreateFile() time:            91.1813
GetFileAttributesEx() time:   24.6656
GetFileAttributes() time:     22.9201

file not exist
access() time:                22.237
open() time:                  91.0049
stat() time:                  205.485
OpenFile() time:              1486.96
CreateFile() time:            88.9103
GetFileAttributesEx() time:   21.7302
GetFileAttributes() time:     21.4524