add clock

3 files changed, 35 insertions, 0 deletions

diff --git a/euler/include/ctime b/euler/include/ctime
new file mode 100644
index 0000000..9cf1b1f
--- /dev/null
+++ b/euler/include/ctime
@@ -0,0 +1,20 @@
+#pragma once
+
+#include <cstdint>
+
+typedef uint64_t time_t;
+
+struct tm {
+  int tm_sec;
+  int tm_min;
+  int tm_hour;
+  int tm_mday;
+  int tm_mon;
+  int tm_year;
+  int tm_wday;
+  int tm_yday;
+  int tm_isdst;
+};
+
+time_t time(time_t *arg);
+tm *gmtime(const time_t *time);
diff --git a/euler/include/euler/syscall.hpp b/euler/include/euler/syscall.hpp
index 4a3daa4..043dcd4 100644
--- a/euler/include/euler/syscall.hpp
+++ b/euler/include/euler/syscall.hpp
@@ -159,6 +159,11 @@ namespace euler::syscall {
 
   void set_thread_name(const std::string &name);
 
+  void sleep(uint64_t mibiseconds);
+
+  //out is mibiseconds since january 1st 2000
+  uint64_t get_time();
+
 }
 
 #include <string>
diff --git a/euler/include/std/string.hpp b/euler/include/std/string.hpp
index 505ee69..c5a3d99 100644
--- a/euler/include/std/string.hpp
+++ b/euler/include/std/string.hpp
@@ -12,6 +12,8 @@ namespace std {
     std::vector<char> characters;
 
   public:
+    static const size_t npos = (size_t)-1;
+
     constexpr string() : characters({'\0'}) {}
 
     constexpr string(const string &other)
@@ -74,6 +76,14 @@ namespace std {
       return characters[pos];
     }
 
+    constexpr string &erase(size_t index = 0, size_t count = npos) {
+      count = std::min(count, size() - index);
+      for (size_t i = index; i + count < size(); ++i)
+        characters[i] = characters[i + count];
+      resize(size() - count);
+      return *this;
+    }
+
   };
 
 }