diff --git a/include/study.h b/include/study.h
new file mode 100644
index 0000000000000000000000000000000000000000..3180ae95af591d2a9ce0cbdd77ee6a5cf84a98a4
--- /dev/null
+++ b/include/study.h
@@ -0,0 +1,43 @@
+#ifndef STUDY_H_
+#define STUDY_H_
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+// include standard library
+#include <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <inttypes.h>
+#include <limits.h>
+#include <math.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <signal.h>
+#include <time.h>
+
+#include <fcntl.h>
+#include <unistd.h>
+#include <pthread.h>
+#include <poll.h>
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <netinet/tcp.h>
+#include <netdb.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <sys/select.h>
+#include <sys/mman.h>
+#include <sys/ipc.h>
+#include <sys/wait.h>
+#include <sys/un.h>
+#include <sys/types.h>
+#include <sys/utsname.h>
+#include <sys/stat.h>
+
+#endif /* STUDY_H_ */
\ No newline at end of file
diff --git a/php_study.h b/php_study.h
index 70a13b1870a8a33c68c2377d1977cfacc0a11641..eab01b3e3b0ff86132fc77863391f9256f10d36d 100644
--- a/php_study.h
+++ b/php_study.h
@@ -12,20 +12,24 @@
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
-  | Author:                                                              |
+  | Author: codinghuang                                                             |
   +----------------------------------------------------------------------+
 */
 
-/* $Id$ */
-
 #ifndef PHP_STUDY_H
 #define PHP_STUDY_H
 
+#include "php.h"
+#include "php_ini.h"
+#include "ext/standard/info.h"
+
+#include "study.h"
+
+#define PHP_STUDY_VERSION "0.1.0"
+
 extern zend_module_entry study_module_entry;
 #define phpext_study_ptr &study_module_entry
 
-#define PHP_STUDY_VERSION "0.1.0" /* Replace with version number for your extension */
-
 #ifdef PHP_WIN32
 #	define PHP_STUDY_API __declspec(dllexport)
 #elif defined(__GNUC__) && __GNUC__ >= 4
@@ -38,34 +42,11 @@ extern zend_module_entry study_module_entry;
 #include "TSRM.h"
 #endif
 
-/*
-  	Declare any global variables you may need between the BEGIN
-	and END macros here:
-
+/**
+ * Declare any global variables you may need between the BEGIN and END macros here
+ */
 ZEND_BEGIN_MODULE_GLOBALS(study)
-	zend_long  global_value;
-	char *global_string;
-ZEND_END_MODULE_GLOBALS(study)
-*/
-
-/* Always refer to the globals in your function as STUDY_G(variable).
-   You are encouraged to rename these macros something shorter, see
-   examples in any other php module directory.
-*/
-#define STUDY_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(study, v)
-
-#if defined(ZTS) && defined(COMPILE_DL_STUDY)
-ZEND_TSRMLS_CACHE_EXTERN()
-#endif
-
-#endif	/* PHP_STUDY_H */
 
+ZEND_END_MODULE_GLOBALS(study)
 
-/*
- * Local variables:
- * tab-width: 4
- * c-basic-offset: 4
- * End:
- * vim600: noet sw=4 ts=4 fdm=marker
- * vim<600: noet sw=4 ts=4
- */
+#endif	/* PHP_STUDY_H */
\ No newline at end of file
diff --git a/study.c b/study.cc
similarity index 53%
rename from study.c
rename to study.cc
index e35c3b237eff20423d38ee4545aaa1553736d850..dac7d32b7dde974a2783f3588fbc461edfeacf54 100644
--- a/study.c
+++ b/study.cc
@@ -12,74 +12,11 @@
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
-  | Author:                                                              |
+  | Author: codinghuang                                                             |
   +----------------------------------------------------------------------+
 */
 
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include "php.h"
-#include "php_ini.h"
-#include "ext/standard/info.h"
 #include "php_study.h"
-#include <pthread.h>
-
-static void (*orig_interrupt_function)(zend_execute_data *execute_data);
-
-void schedule();
-static void create_scheduler_thread();
-static void new_interrupt_function(zend_execute_data *execute_data);
-
-void init()
-{
-	orig_interrupt_function = zend_interrupt_function;
-	zend_interrupt_function = new_interrupt_function;
-}
-
-static void new_interrupt_function(zend_execute_data *execute_data)
-{
-	php_printf("yeild coroutine\n");
-	if (orig_interrupt_function)
-    {
-        orig_interrupt_function(execute_data);
-    }
-}
-
-void schedule()
-{
-    while (1)
-    {
-        EG(vm_interrupt) = 1;
-        usleep(5000);
-    }
-}
-
-static void create_scheduler_thread()
-{
-    pthread_t pidt;
-
-    if (pthread_create(&pidt, NULL, (void * (*)(void *)) schedule, NULL) < 0)
-    {
-        php_printf("pthread_create[PHPCoroutine Scheduler] failed");
-    }
-}
-
-PHP_FUNCTION(start_interrupt) {
-	init();
-	create_scheduler_thread();
-};
-
-PHP_FUNCTION(test) {
-    zend_string *str;
-
-    str = zend_string_init("foo", strlen("foo"), 0);
-    php_printf("This is my string: %s\n", ZSTR_VAL(str));
-    php_printf("It is %zd char long\n", ZSTR_LEN(str));
-
-    zend_string_release(str);
-};
 
 PHP_MINIT_FUNCTION(study)
 {
@@ -93,9 +30,6 @@ PHP_MSHUTDOWN_FUNCTION(study)
 
 PHP_RINIT_FUNCTION(study)
 {
-#if defined(COMPILE_DL_STUDY) && defined(ZTS)
-	ZEND_TSRMLS_CACHE_UPDATE();
-#endif
 	return SUCCESS;
 }
 
@@ -112,8 +46,6 @@ PHP_MINFO_FUNCTION(study)
 }
 
 const zend_function_entry study_functions[] = {
-	PHP_FE(start_interrupt,	NULL)
-	PHP_FE(test, NULL)
 	PHP_FE_END
 };
 
@@ -131,8 +63,5 @@ zend_module_entry study_module_entry = {
 };
 
 #ifdef COMPILE_DL_STUDY
-#ifdef ZTS
-ZEND_TSRMLS_CACHE_DEFINE()
-#endif
 ZEND_GET_MODULE(study)
 #endif