查看php编译程序调用栈

好深的栈，想看下他的源码调用过程，于是打开eclipse，我的eclipse下的是php5.3 ，和5.5代码有点不同，不过没关系

op_array = zend_compile_file(&file_handle, ZEND_INCLUDE TSRMLS_CC);

找到定义

Zend/zend_compile.c 35行

ZEND_API zend_op_array *(*zend_compile_file)(zend_file_handle *file_handle, int type TSRMLS_DC);

发现zend_compile_file只是个指针函数的定义，于是全局搜索下，找到了赋值

main/main.c 1823行

int php_module_startup(sapi_module_struct *sf, zend_module_entry *additional_modules, uint num_additional_modules)

{

…

zuf.stream_open_function = php_stream_open_for_zend;

…

}

Zend/zend.c 639行

int zend_startup(zend_utility_functions *utility_functions, char **extensions TSRMLS_DC) /* {{{ */

{

…

zend_compile_file = compile_file;

…

}

Zend/zend_language_scanner.c 354行

ZEND_API zend_op_array *compile_file(zend_file_handle *file_handle, int type TSRMLS_DC)

{

…

if (open_file_for_scanning(file_handle TSRMLS_CC)==FAILURE) {

…

}

Zend/zend_language_scanner.c 263行

ZEND_API int open_file_for_scanning(zend_file_handle *file_handle TSRMLS_DC)

{

…

if (zend_stream_fixup(file_handle, &buf, &size TSRMLS_CC) == FAILURE) {

return FAILURE;

}

…

}

Zend/zend_stream.c 187行

ZEND_API int zend_stream_fixup(zend_file_handle *file_handle, char **buf, size_t *len TSRMLS_DC) /* {{{ */

{

…

if (zend_stream_open(file_handle->filename, file_handle TSRMLS_CC) == FAILURE) {

return FAILURE;

}

…

}

Zend/zend_stream.c 129行

ZEND_API int zend_stream_open(const char *filename, zend_file_handle *handle TSRMLS_DC)

{

if (zend_stream_open_function) {

return zend_stream_open_function(filename, handle TSRMLS_CC);

}

handle->type = ZEND_HANDLE_FP;

handle->opened_path = NULL;

handle->handle.fp = zend_fopen(filename, &handle->opened_path TSRMLS_CC);

…

}

Zend/zend.c 54行

ZEND_API int (*zend_stream_open_function)(const char *filename, zend_file_handle *handle TSRMLS_DC);

Zend/zend.c 628行

int zend_startup(zend_utility_functions *utility_functions, char **extensions TSRMLS_DC) /* {{{ */

{

…

zend_stream_open_function = utility_functions->stream_open_function;

…

}

看到了utility_functions 是传参传进来的，那就找下在哪里调用了这个函数

main/main.c 1892行

int php_module_startup(sapi_module_struct *sf, zend_module_entry *additional_modules, uint num_additional_modules)

{

zend_utility_functions zuf;

…

zuf.stream_open_function = php_stream_open_for_zend;

…

zend_startup(&zuf, NULL TSRMLS_CC);

}

可以看到，是引用php_stream_open_for_zend，继续找下去

main/main.c 1214行

static int php_stream_open_for_zend(const char *filename, zend_file_handle *handle TSRMLS_DC) /* {{{ */

{

return php_stream_open_for_zend_ex(filename, handle, ENFORCE_SAFE_MODE|USE_PATH|REPORT_ERRORS|STREAM_OPEN_FOR_INCLUDE TSRMLS_CC);

}

/* }}} */

PHPAPI int php_stream_open_for_zend_ex(const char *filename, zend_file_handle *handle, int mode TSRMLS_DC) /* {{{ */

{

char *p;

size_t len, mapped_len;

php_stream *stream = php_stream_open_wrapper((char *)filename, “rb”, mode, &handle->opened_path);

…

}

main/php_streams.h 546行

#define php_stream_open_wrapper(path, mode, options, opened) _php_stream_open_wrapper_ex((path), (mode), (options), (opened), NULL STREAMS_CC TSRMLS_CC)

main/streams/streams.c 1987行

本来看到调用栈上有php_plain_files_stream_opener，但我搜索下了下没有这个函数，惊到我了。然后研究发现有的。

PHPAPI php_stream *_php_stream_open_wrapper_ex(char *path, char *mode, int options,

char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)

{

…

stream = wrapper->wops->stream_opener(wrapper,

path_to_open, mode, options ^ REPORT_ERRORS,

opened_path, context STREAMS_REL_CC TSRMLS_CC);

…

}

main/php_streams.h 132行

typedef struct _php_stream_wrapper_ops {

/* open/create a wrapped stream */

php_stream *(*stream_opener)(php_stream_wrapper *wrapper, char *filename, char *mode,

int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC);

…

} php_stream_wrapper_ops;

是个结构体,里面定义了很多函数指针，我操。

main/streams/plain_wrapper.c 1300行

static php_stream_wrapper_ops php_plain_files_wrapper_ops = {

php_plain_files_stream_opener,

…

};

他用 php_stream_wrapper_ops结构体声明了个变量，并给stream_opener赋值为php_plain_files_stream_opener,真TMD的绕。

main/streams/plain_wrapper.c 994行

static php_stream *php_plain_files_stream_opener(php_stream_wrapper *wrapper, char *path, char *mode,

int options, char **opened_path, php_stream_context *context STREAMS_DC TSRMLS_DC)

{

…

return php_stream_fopen_rel(path, mode, opened_path, options);

}

main/php_streams.h 66行

#define php_stream_fopen_rel(filename, mode, opened, options) _php_stream_fopen((filename), (mode), (opened), (options) STREAMS_REL_CC TSRMLS_CC)

main/streams/plain_wrapper.c 943行

PHPAPI php_stream *_php_stream_fopen(const char *filename, const char *mode, char **opened_path, int options STREAMS_DC TSRMLS_DC)

{

…

ret = php_stream_fopen_from_fd_int_rel(fd, mode, persistent_id);

…

}

main/streams/plain_wrapper.c 47行

#define php_stream_fopen_from_fd_int_rel(fd, mode, persistent_id) _php_stream_fopen_from_fd_int((fd), (mode), (persistent_id) STREAMS_REL_CC TSRMLS_CC)

main/streams/plain_wrapper.c 160行

static php_stream *_php_stream_fopen_from_fd_int(int fd, const char *mode, const char *persistent_id STREAMS_DC TSRMLS_DC)

{

…

return php_stream_alloc_rel(&php_stream_stdio_ops, self, persistent_id, mode);

…

}

main/php_streams.h 62行

#define php_stream_alloc_rel(ops, thisptr, persistent, mode) _php_stream_alloc((ops), (thisptr), (persistent), (mode) STREAMS_REL_CC TSRMLS_CC)

main/streams/streams.c 324行

PHPAPI php_stream *_php_stream_alloc(php_stream_ops *ops, void *abstract, const char *persistent_id, const char *mode STREAMS_DC TSRMLS_DC) /* {{{ */

{

…

ret->rsrc_id = ZEND_REGISTER_RESOURCE(NULL, ret, persistent_id ? le_pstream : le_stream);

…

}

zend/zend_list.h 109行

#define ZEND_REGISTER_RESOURCE(rsrc_result, rsrc_pointer, rsrc_type)

zend_register_resource(rsrc_result, rsrc_pointer, rsrc_type);

zend/zend_list.c 95行

ZEND_API int zend_register_resource(zval *rsrc_result, void *rsrc_pointer, int rsrc_type)

{

…

rsrc_id = zend_list_insert(rsrc_pointer, rsrc_type);

…

}

zend/zend_list.c 47行

ZEND_API int zend_list_insert(void *ptr, int type)

{

…

zend_hash_index_update(&EG(regular_list), index, (void *) &le, sizeof(zend_rsrc_list_entry), NULL);

…

}

zend/zend_hash.h 120行

#define zend_hash_index_update(ht, h, pData, nDataSize, pDest)

_zend_hash_index_update_or_next_insert(ht, h, pData, nDataSize, pDest, HASH_UPDATE ZEND_FILE_LINE_CC)

zend/zend_hash.c 350行

ZEND_API int _zend_hash_index_update_or_next_insert(HashTable *ht, ulong h, void *pData, uint nDataSize, void **pDest, int flag ZEND_FILE_LINE_DC)

{

…

}

好了，找完了。

查看php编译程序调用栈

Post Navigation