xlib集成调试（Tracing）

发布于 2024-08-22 20:23:31 字数 268 浏览 6 评论 0原文

Xlib (libX11.so) 中是否内置了任何调试选项？我可以获得 X11 lib 调用的列表吗？

我想从重型多线程、闭源程序中获取 xlib 函数调用的完整跟踪。它是一个非公开的嵌入式平台，因此我无法使用gdb进行多线程调试，并且该平台上没有ltrace。另外，该程序无法通过 tcp/ip 连接到 x 服务器，只能通过 unix-socket 连接。我想跟踪 xlib 本身的 xlib 调用。

附： Xlib 来自相当现代的 xfree 甚至 xorg。来自 gnu linux

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森林迷了鹿 2024-08-29 20:23:31

您也许可以使用 xscope< /a> 监视通过 Unix 套接字发送的请求，即使您无法通过 TCP 发送 X 协议也能够使用网络监视工具，例如 Wireshark。

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街道布景 2024-08-29 20:23:31

您可以查看 xlibtrace，它跟踪 Xlib 和您的代码之间的接口，而不是 X Windows 有线协议。我已经执行了几个示例，它似乎有效。

源代码可在 http://kev.pulo.com.au/xlibtrace

我必须修改它以使其编译：

diff -u src/libxlibtrace-functions.h.sh.orig src/libxlibtrace-functions.h.sh
--- src/libxlibtrace-functions.h.sh.orig    2009-01-19 23:43:46.000000000 -0500
+++ src/libxlibtrace-functions.h.sh 2016-02-24 13:49:25.155556294 -0500
@@ -81,7 +81,7 @@
    return (t ~ /^[cC][oO][nN][sS][tT][     ]/);
 }

-function isarray(t) {
+function our_isarray(t) {
    return (t ~ /\[.*\]$/);
 }

@@ -90,7 +90,7 @@
        return sprintf("%s", t);
    } else if (isfunctionpointer(t)) {
        return gensub("^(.*\\(\\*)(\\).*)$", "\\1"n"\\2", "", t);
-   } else if (isarray(t)) {
+   } else if (our_isarray(t)) {
        return gensub("^(.*)(\\[.*\\])$", "\\1"n"\\2", "", t);
    } else {
        return sprintf("%s %s", t, n);
diff -u src/libxlibtrace-print-x.h.orig src/libxlibtrace-print-x.h
--- src/libxlibtrace-print-x.h.orig 2009-01-19 22:30:06.000000000 -0500
+++ src/libxlibtrace-print-x.h  2016-02-24 14:27:08.681352710 -0500
@@ -2415,6 +2415,20 @@
    dofflush(f);
 })

+// XGenericEventCookie
+#define __REALTYPE_XGenericEventCookie__    XGenericEventCookie
+#define __REALTYPE_XGenericEventCookie_p__  XGenericEventCookie *
+#define __REALTYPE_XGenericEventCookie_pp__ XGenericEventCookie **
+#define __TRACE_PRINT_TYPE_STRUCT_BODY_XGenericEventCookie__(safetype) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, type) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, unsigned_long, serial) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, Bool, send_event) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, Display_p, display) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, extension) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, evtype) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, unsigned_int, cookie) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, void_p, data)
+__INDIRECT_CALL_3__(__TRACE_PRINT_TYPE_STRUCT,__LIBXLIBTRACE_PRINT_X_SUFF__,__)(XGenericEventCookie)


 #undef __LIBXLIBTRACE_PRINT_X_BODY__

You might look into xlibtrace, which traces at the interface between Xlib and your code, rather than the X Windows wire protocol. I've executed a couple of the examples, and it seems to work.

The source is available at http://kev.pulo.com.au/xlibtrace

I had to modify it to get it to compile:

diff -u src/libxlibtrace-functions.h.sh.orig src/libxlibtrace-functions.h.sh
--- src/libxlibtrace-functions.h.sh.orig    2009-01-19 23:43:46.000000000 -0500
+++ src/libxlibtrace-functions.h.sh 2016-02-24 13:49:25.155556294 -0500
@@ -81,7 +81,7 @@
    return (t ~ /^[cC][oO][nN][sS][tT][     ]/);
 }

-function isarray(t) {
+function our_isarray(t) {
    return (t ~ /\[.*\]$/);
 }

@@ -90,7 +90,7 @@
        return sprintf("%s", t);
    } else if (isfunctionpointer(t)) {
        return gensub("^(.*\\(\\*)(\\).*)$", "\\1"n"\\2", "", t);
-   } else if (isarray(t)) {
+   } else if (our_isarray(t)) {
        return gensub("^(.*)(\\[.*\\])$", "\\1"n"\\2", "", t);
    } else {
        return sprintf("%s %s", t, n);
diff -u src/libxlibtrace-print-x.h.orig src/libxlibtrace-print-x.h
--- src/libxlibtrace-print-x.h.orig 2009-01-19 22:30:06.000000000 -0500
+++ src/libxlibtrace-print-x.h  2016-02-24 14:27:08.681352710 -0500
@@ -2415,6 +2415,20 @@
    dofflush(f);
 })

+// XGenericEventCookie
+#define __REALTYPE_XGenericEventCookie__    XGenericEventCookie
+#define __REALTYPE_XGenericEventCookie_p__  XGenericEventCookie *
+#define __REALTYPE_XGenericEventCookie_pp__ XGenericEventCookie **
+#define __TRACE_PRINT_TYPE_STRUCT_BODY_XGenericEventCookie__(safetype) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, type) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, unsigned_long, serial) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, Bool, send_event) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, Display_p, display) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, extension) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, int, evtype) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, unsigned_int, cookie) __PRINT_COMMA__(f) \
+   __TRACE_PRINT_STRUCT_MEMBER__(f, safetype, *value, void_p, data)
+__INDIRECT_CALL_3__(__TRACE_PRINT_TYPE_STRUCT,__LIBXLIBTRACE_PRINT_X_SUFF__,__)(XGenericEventCookie)


 #undef __LIBXLIBTRACE_PRINT_X_BODY__

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