20181022

bazel/boost/WORKSPACE

+git_repository(
+    name = "com_github_nelhage_rules_boost",
+    commit = "8a8853fd755496288995a603ce9aa2685709cd39",
+    remote = "https://github.com/nelhage/rules_boost",
+)
+
+load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
+boost_deps()

bazel/boost/b

+c
\ No newline at end of file

bazel/boost/bazel-bin

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/bin
\ No newline at end of file

bazel/boost/bazel-c++file

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__
\ No newline at end of file

bazel/boost/bazel-genfiles

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/genfiles
\ No newline at end of file

bazel/boost/bazel-out

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out
\ No newline at end of file

bazel/boost/bazel-testlogs

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/testlogs
\ No newline at end of file

bazel/boost/c

+a
\ No newline at end of file

bazel/boost/test1/BUILD

+cc_binary(
+  name="test1",
+  srcs=["test1.cpp"],
+  deps=["@boost//:filesystem"]
+)

c++file/main.cpp → bazel/boost/test1/test1.cpp

@@ -5,8 +5,8 @@ namespace fs = boost::filesystem;
 using namespace std;
 
 int main(){
-  //cout << fs::exist("a") << endl;
-  //cout << fs::exist("b") << endl;
+  cout << fs::exists("a") << endl;
+  cout << fs::exists("b") << endl;
   cout << fs::is_directory("b") << endl;
   return 0;
 }

bazel/repo1/bazel-bin

-/root/.cache/bazel/_bazel_root/3ca51cb9a7e10b81b1009271d77d0cd3/execroot/__main__/bazel-out/k8-fastbuild/bin
\ No newline at end of file

bazel/repo1/bazel-genfiles

-/root/.cache/bazel/_bazel_root/3ca51cb9a7e10b81b1009271d77d0cd3/execroot/__main__/bazel-out/k8-fastbuild/genfiles
\ No newline at end of file

bazel/repo1/bazel-out

-/root/.cache/bazel/_bazel_root/3ca51cb9a7e10b81b1009271d77d0cd3/execroot/__main__/bazel-out
\ No newline at end of file

bazel/repo1/bazel-repo1

-/root/.cache/bazel/_bazel_root/3ca51cb9a7e10b81b1009271d77d0cd3/execroot/__main__
\ No newline at end of file

bazel/repo1/bazel-testlogs

-/root/.cache/bazel/_bazel_root/3ca51cb9a7e10b81b1009271d77d0cd3/execroot/__main__/bazel-out/k8-fastbuild/testlogs
\ No newline at end of file

boost/filesystem/WORKSPACE

+git_repository(
+    name = "com_github_nelhage_rules_boost",
+    commit = "8a8853fd755496288995a603ce9aa2685709cd39",
+    remote = "https://github.com/nelhage/rules_boost",
+)
+
+load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
+boost_deps()

boost/filesystem/b

+c
\ No newline at end of file

boost/filesystem/bazel-bin

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/bin
\ No newline at end of file

boost/filesystem/bazel-c++file

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__
\ No newline at end of file

boost/filesystem/bazel-genfiles

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/genfiles
\ No newline at end of file

boost/filesystem/bazel-out

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out
\ No newline at end of file

boost/filesystem/bazel-testlogs

+/root/.cache/bazel/_bazel_root/10b47e0969b5a5941f6ac84b9ec5df3b/execroot/__main__/bazel-out/k8-fastbuild/testlogs
\ No newline at end of file

boost/filesystem/c

+a
\ No newline at end of file

boost/filesystem/test0.cpp

+#include <unistd.h>
+#include <iostream>
+
+using namespace std;
+
+int main (){
+  char file_name[] = "b";
+  if ( 0 == access(file_name, 0) )  cout<<"access(): path exist."<<endl;
+  return 0;
+}

boost/filesystem/test1/BUILD

+cc_binary(
+  name="test1",
+  srcs=["test1.cpp"],
+  deps=["@boost//:filesystem"]
+)

boost/filesystem/test1/test1.cpp

+#include <iostream>
+#include <boost/filesystem.hpp>
+
+namespace fs = boost::filesystem;
+using namespace std;
+
+int main(){
+  cout << fs::exists("a") << endl;
+  cout << fs::exists("b") << endl;
+  cout << fs::is_directory("b") << endl;
+  return 0;
+}

c++file/WORKSPACE

+git_repository(
+    name = "com_github_nelhage_rules_boost",
+    commit = "8a8853fd755496288995a603ce9aa2685709cd39",
+    remote = "https://github.com/nelhage/rules_boost",
+)
+
+load("@com_github_nelhage_rules_boost//:boost/boost.bzl", "boost_deps")
+boost_deps()

c++file/test1/BUILD

+cc_binary(
+  name="test1",
+  srcs=["test1.cpp"],
+  deps=["@boost//:filesystem"]
+)

c++file/test1/test1.cpp

+#include <iostream>
+#include <boost/filesystem.hpp>
+
+namespace fs = boost::filesystem;
+using namespace std;
+
+int main(){
+  cout << fs::exists("a") << endl;
+  cout << fs::exists("b") << endl;
+  cout << fs::is_directory("b") << endl;
+  return 0;
+}

c++ptr/main.cpp

+#include <iostream>
+
+using namespace std;
+
+int main(){
+    int a[10];
+    void* b = (void*)a;
+    cout << a << ", " << a+1 << endl;
+    cout << b << ", " << b+1 << endl;
+    return 0;
+}

c++time/main.cpp

 #include <unistd.h>
 #include <iostream>
+#include <vector>
 #include <time.h>
 
 using namespace std;
@@ -10,14 +11,23 @@ int main(){
     cout << "xx" << endl;
   }
   time(&a); // time.h
-  sleep(4); // unistd.h
+  sleep(2); // unistd.h
   time(&b);
   cout << a << ", " << b << endl;
   cout << b -a << endl;
 
   clock_t clc_a = 0, clc_b = 0;
+  vector<double> v;
   clc_a=clock(); // time.h
-  sleep(4); // unistd.h
+  for (int i = 0; i < 100000000; ++i){
+    v.push_back(double(i)*i);
+  }
+  clc_b=clock();
+  cout << clc_a << ", " << clc_b <<", CLOCKS_PER_SEC: " << CLOCKS_PER_SEC<< endl;
+  cout << (clc_b - clc_a) / CLOCKS_PER_SEC << endl;
+
+  clc_a=clock(); // time.h
+  sleep(2); // NO CPU clock during sleep
   clc_b=clock();
   cout << clc_a << ", " << clc_b <<", CLOCKS_PER_SEC: " << CLOCKS_PER_SEC<< endl;
   cout << (clc_b - clc_a) / CLOCKS_PER_SEC << endl;