Add: 增加《协程创建（一）》

docs/《PHP扩展开发》-协程-协程创建（一）.md

+# 协程创建（一）
+
+## 协程相关结构定义
+
+首先，我们需要一个`PHP`可用的协程，根据[梳理一下架构](./《PHP扩展开发》-协程-梳理一下架构.md)这篇文章的内容，我们需要在`study_coroutine.h`里面来定义：
+
+```c++
+#include "php_study.h"
+
+namespace Study
+{
+class PHPCoroutine
+{
+    static long create(zend_fcall_info_cache *fci_cache, uint32_t argc, zval *argv);
+};
+}
+```
+
+然后，我们还需要一个与`PHP`无关的协程数据结构，我们定义在`include/coroutine.h`下面：
+
+```c++
+#ifndef COROUTINE_H
+#define COROUTINE_H
+
+namespace Study
+{
+class Coroutine
+{
+    static long create(coroutine_func_t fn, void* args = nullptr);
+};
+}
+
+#endif	/* COROUTINE_H */
+```
+
+`coroutine_func_t`是协程需要跑的函数，我们可以定义在`include/context.h`下面：
+
+```c++
+#ifndef CONTEXT_H
+#define CONTEXT_H
+
+typedef void (*coroutine_func_t)(void*);
+
+#endif	/* CONTEXT_H */
+```
+
+它定义了一个指向函数的指针类型，返回值是`void`，参数是一个`void *`指针。
+
+然后，我们在`include/coroutine.h`中引入这个`context.h`文件：
+
+```c++
+#include "context.h"
+```
+
+## 协程接口参数声明
+
+OK，此时，我们需要为`PHP`脚本提供一个创建协程的接口，我们在文件`study_coroutine_util.cc`里面来完成。首先，我们需要确定一下这个接口的参数是什么，很显然，是一个`PHP`函数：
+
+```c++
+#include "study_coroutine.h"
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_study_coroutine_create, 0, 0, 1)
+    ZEND_ARG_CALLABLE_INFO(0, func, 0)
+ZEND_END_ARG_INFO()
+```
+
+其中`ZEND_BEGIN_ARG_INFO_EX`和`ZEND_END_ARG_INFO`是一对宏，用来声明函数接受的参数。其中`ZEND_BEGIN_ARG_INFO_EX`展开如下：
+
+```c++
+#define ZEND_BEGIN_ARG_INFO_EX(name, _unused, return_reference, required_num_args)	\
+	static const zend_internal_arg_info name[] = { \
+		{ (const char*)(zend_uintptr_t)(required_num_args), 0, return_reference, 0 },
+```
+
+`name`是参数的的名字。
+
+`_unused`我们不用管，因为`ZEND_BEGIN_ARG_INFO_EX`展开之后，并没有用到`_unused`。
+
+`return_reference`表示是否返回引用。
+
+`required_num_args`表示这个函数最少需要传递的参数个数。
+
+`ZEND_ARG_CALLABLE_INFO`用来显式声明参数为`callable`，将检查函数、成员方法是否可调用。
+
+`ZEND_END_ARG_INFO`展开如下：
+
+```c++
+#define ZEND_END_ARG_INFO()		};
+```
+
+因此，我们对这个参数声明展开后，会得到如下内容：
+
+```c++
+ZEND_BEGIN_ARG_INFO_EX(arginfo_study_coroutine_create, 0, 0, 1)
+    ZEND_ARG_CALLABLE_INFO(0, func, 0)
+ZEND_END_ARG_INFO()
+  
+static const zend_internal_arg_info arginfo_study_coroutine_create[] = { \
+		{ (const char*)(zend_uintptr_t)(1), 0, 0, 0 },
+    ZEND_ARG_CALLABLE_INFO(0, func, 0)
+};
+```
+
+所以，虽然我在
+
+```c++
+ZEND_BEGIN_ARG_INFO_EX(arginfo_study_coroutine_create, 0, 0, 1)
+```
+
+中写下了单词`arginfo`、`study_coroutine_create`，似乎一定是要这样写，但是，我们把`ZEND_BEGIN_ARG_INFO_EX`宏展开之后会发现，`arginfo_study_coroutine_create`只是一个变量名而已。因此，我这里这样组合这个变量是为了可读性更好，并不是一定要这样声明这个参数，这一点大家需要去注意。
+
+## 协程接口方法声明
+
+然后，我们需要在文件`study_coroutine_util.cc`里面去声明这个方法：
+
+```c++
+static PHP_METHOD(study_coroutine_util, create);
+```
+
+`PHP_METHOD`展开之后的内容如下：
+
+```
+#define PHP_METHOD  			ZEND_METHOD
+#define ZEND_METHOD(classname, name)	ZEND_NAMED_FUNCTION(ZEND_MN(classname##_##name))
+#define ZEND_MN(name) zim_##name
+#define ZEND_NAMED_FUNCTION(name)		void ZEND_FASTCALL name(INTERNAL_FUNCTION_PARAMETERS)#define INTERNAL_FUNCTION_PARAMETERS zend_execute_data *execute_data, zval *return_value
+```
+
+所以，接口方法展开的内容如下：
+
+```c++
+PHP_METHOD(study_coroutine_util, create);
+ZEND_METHOD(study_coroutine_util, create);
+ZEND_NAMED_FUNCTION(ZEND_MN(study_coroutine_util##_##create));
+ZEND_NAMED_FUNCTION(zim_##study_coroutine_util##_##create);
+void ZEND_FASTCALL zim_##study_coroutine_util##_##create(INTERNAL_FUNCTION_PARAMETERS);
+void ZEND_FASTCALL zim_##study_coroutine_util##_##create(zend_execute_data *execute_data, zval *return_value);
+```
+
+`static PHP_METHOD(study_coroutine_util, create);`相当于声明了如下函数：
+
+```c++
+void zim_study_coroutine_util_create(zend_execute_data *execute_data, zval *return_value);
+```
+
+通过对接口方法的展开，我们发现，虽然接口命名是单词`study_coroutine_util`和`create`，似乎必须得是真正的类名加上方法名。其实不然，这里也只是为了可读性更好。
+
+我们还可以对比一下`PHP_FUNCTION`这个宏，实际上，它和`PHP_METHOD`的一个区别就是少拼接了`classname`。
+
+## 协程接口实现
+
+我们在`study_coroutine_util.cc`文件里面写下：
+
+```c++
+PHP_METHOD(study_coroutine_util, create)
+{
+    php_printf("success!\n");
+}
+```
+
+因为文章篇幅的原因，我们这里简单实现。
+
+## 协程接口收集
+
+接着，我们需要对这个方法进行收集，放在变量`study_coroutine_util_methods`里面。在`study_coroutine_util.cc`写下：
+
+```c++
+const zend_function_entry study_coroutine_util_methods[] =
+{
+    PHP_ME(study_coroutine_util, create, arginfo_study_coroutine_create, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+    PHP_FE_END
+};
+```
+
+这里我们使用到一个数据结构：
+
+```c++
+typedef struct _zend_function_entry {
+	const char *fname;
+	zif_handler handler;
+	const struct _zend_internal_arg_info *arg_info;
+	uint32_t num_args;
+	uint32_t flags;
+} zend_function_entry;
+```
+
+`fname`是函数的名字。
+
+`handler`是一个函数指针，也就是该函数的主体。那么是什么样的函数指针呢？我们得看看前面的`zif_handler`：
+
+```c++
+/* zend_internal_function_handler */
+typedef void (ZEND_FASTCALL *zif_handler)(INTERNAL_FUNCTION_PARAMETERS);
+```
+
+可以发现，这是一个没有返回值，参数是`INTERNAL_FUNCTION_PARAMETERS`的函数。这个其实和`PHP_METHOD`这个宏展开得到的函数声明类型是一致的。
+
+`arg_info`是这个接口方法对应的参数。可以发现，它实际上就是我们上面的那个参数展开后的类型。所以这里很明显，我们必须填写`arginfo_study_coroutine_create`，也就是我们参数展开后定义的那个变量。
+
+`num_args`是接口方法的参数个数。可以发现，我们这里并没有填写参数的个数，实际上，这个参数的个数会通过宏`ZEND_FENTRY`来计算出来：
+
+```c++
+#define ZEND_FENTRY(zend_name, name, arg_info, flags)	{ #zend_name, name, arg_info, (uint32_t) (sizeof(arg_info)/sizeof(struct _zend_internal_arg_info)-1), flags },
+```
+
+`flags`是标志。例如这个接口方法是`public`、`static`的。
+
+## 协程类注册
+
+然后，我们需要去注册我们的`Study\Coroutine`这个类。我们在`MINIT`这个阶段进行注册，代码如下：
+
+```c++
+zend_class_entry study_coroutine_ce;
+zend_class_entry *study_coroutine_ce_ptr;
+
+PHP_MINIT_FUNCTION(study)
+{
+	INIT_NS_CLASS_ENTRY(study_coroutine_ce, "Study", "Coroutine", study_coroutine_util_methods);
+
+	return SUCCESS;
+}
+```
+
+但是，考虑到以后我们会有许多的类，我们不在`MINIT`里面直接写注册的代码，而是让`study_coroutine_util.cc`提供一个函数，我们在这个函数里面实现注册功能：
+
+```c++
+/**
+ * Define zend class entry
+ */
+zend_class_entry study_coroutine_ce;
+zend_class_entry *study_coroutine_ce_ptr;
+
+void study_coroutine_util_init()
+{
+	INIT_NS_CLASS_ENTRY(study_coroutine_ce, "Study", "Coroutine", study_coroutine_util_methods);
+  study_coroutine_ce_ptr = zend_register_internal_class(&study_coroutine_ce TSRMLS_CC); // Registered in the Zend Engine
+}
+```
+
+然后，我们在`php_study.h`里面来进行声明：
+
+```c++
+void study_coroutine_util_init();
+```
+
+然后，我们在`MINIT`中对这个函数进行调用，完成类的注册：
+
+```c++
+PHP_MINIT_FUNCTION(study)
+{
+	study_coroutine_util_init();
+	return SUCCESS;
+}
+```
+
+## 编译测试
+
+```shell
+~/codeDir/cppCode/study # ./make.sh 
+```
+
+编写测试脚本：
+
+```php
+<?php
+
+Study\Coroutine::create();
+```
+
+```php
+~/codeDir/cppCode/study # php test.php 
+success!
+~/codeDir/cppCode/study # 
+```
+
+OK，到这里，我们算是完成了协程创建接口的前期工作。
+
+
+
+
+
+
+
+
+

docs/《PHP扩展开发》-协程-梳理一下架构.md

@@ -25,3 +25,17 @@ study_coroutine_util.cc（文件）
 #endif	/* STUDY_COROUTINE_H */
 ```
 
+同时，我们需要修改我们的`config.m4`文件：
+
+```shell
+study_source_file="\
+  study.cc \
+  study_coroutine.cc \
+  study_coroutine_util.cc \
+  ${STUDY_ASM_DIR}make_${STUDY_CONTEXT_ASM_FILE} \
+  ${STUDY_ASM_DIR}jump_${STUDY_CONTEXT_ASM_FILE}
+"
+```
+
+[下一篇：协程创建（一）](《PHP扩展开发》-协程-协程创建（一）.md)
+

include/context.h

+#ifndef CONTEXT_H
+#define CONTEXT_H
+
+typedef void (*coroutine_func_t)(void*);
+
+#endif	/* CONTEXT_H */

include/coroutine.h

+#ifndef COROUTINE_H
+#define COROUTINE_H
+
+#include "context.h"
+
+namespace Study
+{
+class Coroutine
+{
+    static long create(coroutine_func_t fn, void* args = nullptr);
+};
+}
+
+#endif	/* COROUTINE_H */
\ No newline at end of file

php_study.h

@@ -49,4 +49,6 @@ ZEND_BEGIN_MODULE_GLOBALS(study)
 
 ZEND_END_MODULE_GLOBALS(study)
 
+void study_coroutine_util_init();
+
 #endif	/* PHP_STUDY_H */
\ No newline at end of file

record.log

+/bin/sh /root/codeDir/cppCode/study/libtool --mode=compile g++  -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11   -c /root/codeDir/cppCode/study/study.cc -o study.lo 
+mkdir .libs
+ g++ -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include -DHAVE_CONFIG_H -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11 -c /root/codeDir/cppCode/study/study.cc  -fPIC -DPIC -o .libs/study.o
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=compile g++  -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11   -c /root/codeDir/cppCode/study/study_coroutine.cc -o study_coroutine.lo 
+ g++ -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include -DHAVE_CONFIG_H -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11 -c /root/codeDir/cppCode/study/study_coroutine.cc  -fPIC -DPIC -o .libs/study_coroutine.o
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=compile g++  -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11   -c /root/codeDir/cppCode/study/study_coroutine_util.cc -o study_coroutine_util.lo 
+ g++ -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include -DHAVE_CONFIG_H -g -O2 -Wall -Wno-unused-function -Wno-deprecated -Wno-deprecated-declarations -std=c++11 -c /root/codeDir/cppCode/study/study_coroutine_util.cc  -fPIC -DPIC -o .libs/study_coroutine_util.o
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=compile cc  -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -Wall -pthread -g -O2   -c /root/codeDir/cppCode/study/thirdparty/boost/asm/make_x86_64_sysv_elf_gas.S -o thirdparty/boost/asm/make_x86_64_sysv_elf_gas.lo 
+mkdir thirdparty/boost/asm/.libs
+ cc -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include -DHAVE_CONFIG_H -Wall -pthread -g -O2 -c /root/codeDir/cppCode/study/thirdparty/boost/asm/make_x86_64_sysv_elf_gas.S  -fPIC -DPIC -o thirdparty/boost/asm/.libs/make_x86_64_sysv_elf_gas.o
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=compile cc  -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -Wall -pthread -g -O2   -c /root/codeDir/cppCode/study/thirdparty/boost/asm/jump_x86_64_sysv_elf_gas.S -o thirdparty/boost/asm/jump_x86_64_sysv_elf_gas.lo 
+ cc -I. -I/root/codeDir/cppCode/study -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include -DHAVE_CONFIG_H -Wall -pthread -g -O2 -c /root/codeDir/cppCode/study/thirdparty/boost/asm/jump_x86_64_sysv_elf_gas.S  -fPIC -DPIC -o thirdparty/boost/asm/.libs/jump_x86_64_sysv_elf_gas.o
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=link g++ -DPHP_ATOM_INC -I/root/codeDir/cppCode/study/include -I/root/codeDir/cppCode/study/main -I/root/codeDir/cppCode/study -I/usr/local/include/php -I/usr/local/include/php/main -I/usr/local/include/php/TSRM -I/usr/local/include/php/Zend -I/usr/local/include/php/ext -I/usr/local/include/php/ext/date/lib -I/root/codeDir/cppCode/study -I/root/codeDir/cppCode/study/include  -DHAVE_CONFIG_H  -Wall -pthread -g -O2    -o study.la -export-dynamic -avoid-version -prefer-pic -module -rpath /root/codeDir/cppCode/study/modules  study.lo study_coroutine.lo study_coroutine_util.lo thirdparty/boost/asm/make_x86_64_sysv_elf_gas.lo thirdparty/boost/asm/jump_x86_64_sysv_elf_gas.lo 
+g++ -shared -nostdlib /usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../../../lib/crti.o /usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/crtbeginS.o  .libs/study.o .libs/study_coroutine.o .libs/study_coroutine_util.o thirdparty/boost/asm/.libs/make_x86_64_sysv_elf_gas.o thirdparty/boost/asm/.libs/jump_x86_64_sysv_elf_gas.o  -L/usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0 -L/usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../../../x86_64-alpine-linux-musl/lib/../lib -L/usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../../../lib -L/lib/../lib -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../../../x86_64-alpine-linux-musl/lib -L/usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../.. -lstdc++ -lm -lssp_nonshared -lpthread -lc -lgcc_s /usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/crtendS.o /usr/lib/gcc/x86_64-alpine-linux-musl/8.3.0/../../../../lib/crtn.o  -pthread -Wl,-soname -Wl,study.so -o .libs/study.so
+creating study.la
+(cd .libs && rm -f study.la && ln -s ../study.la study.la)
+/bin/sh /root/codeDir/cppCode/study/libtool --mode=install cp ./study.la /root/codeDir/cppCode/study/modules
+cp ./.libs/study.so /root/codeDir/cppCode/study/modules/study.so
+cp ./.libs/study.lai /root/codeDir/cppCode/study/modules/study.la
+PATH="$PATH:/sbin" ldconfig -n /root/codeDir/cppCode/study/modules
+----------------------------------------------------------------------
+Libraries have been installed in:
+   /root/codeDir/cppCode/study/modules
+
+If you ever happen to want to link against installed libraries
+in a given directory, LIBDIR, you must either use libtool, and
+specify the full pathname of the library, or use the `-LLIBDIR'
+flag during linking and do at least one of the following:
+   - add LIBDIR to the `LD_LIBRARY_PATH' environment variable
+     during execution
+   - add LIBDIR to the `LD_RUN_PATH' environment variable
+     during linking
+   - use the `-Wl,--rpath -Wl,LIBDIR' linker flag
+
+See any operating system documentation about shared libraries for
+more information, such as the ld(1) and ld.so(8) manual pages.
+----------------------------------------------------------------------
+
+Build complete.
+Don't forget to run 'make test'.
+

study.cc

@@ -20,6 +20,7 @@
 
 PHP_MINIT_FUNCTION(study)
 {
+	study_coroutine_util_init();
 	return SUCCESS;
 }
 

study_coroutine.h

+#ifndef STUDY_COROUTINE_H
+#define STUDY_COROUTINE_H
+
+#include "php_study.h"
+
+namespace Study
+{
+class PHPCoroutine
+{
+    static long create(zend_fcall_info_cache *fci_cache, uint32_t argc, zval *argv);
+};
+}
+
+#endif	/* STUDY_COROUTINE_H */
\ No newline at end of file

study_coroutine_util.cc

+#include "study_coroutine.h"
+
+ZEND_BEGIN_ARG_INFO_EX(arginfo_study_coroutine_create, 0, 0, 1)
+    ZEND_ARG_CALLABLE_INFO(0, func, 0)
+ZEND_END_ARG_INFO()
+
+static PHP_METHOD(study_coroutine_util, create);
+
+PHP_METHOD(study_coroutine_util, create)
+{
+    php_printf("success!\n");
+}
+
+static const zend_function_entry study_coroutine_util_methods[] =
+{
+    PHP_ME(study_coroutine_util, create, arginfo_study_coroutine_create, ZEND_ACC_PUBLIC | ZEND_ACC_STATIC)
+    PHP_FE_END
+};
+
+/**
+ * Define zend class entry
+ */
+zend_class_entry study_coroutine_ce;
+zend_class_entry *study_coroutine_ce_ptr;
+
+void study_coroutine_util_init()
+{
+    INIT_NS_CLASS_ENTRY(study_coroutine_ce, "Study", "Coroutine", study_coroutine_util_methods);
+    study_coroutine_ce_ptr = zend_register_internal_class(&study_coroutine_ce TSRMLS_CC); // Registered in the Zend Engine
+}
\ No newline at end of file

test.php

 <?php
 
-echo "execute the script\n";
\ No newline at end of file
+Study\Coroutine::create();