DBUS服务器崩溃
我正在使用 Glib 绑定实现 DBUS 对象,但在返回 GArray 时遇到问题:
gboolean TestObject_get_data(TestObject* obj, GArray* buffer, GError** error)
{
int i;
printf("%s Entering\n", __PRETTY_FUNCTION__);
buffer = g_array_new(FALSE, FALSE, sizeof(char));
if(buffer)
{
for(i = 0; i < 5 ; i++)
{
g_array_append_val(buffer, i);
}
return TRUE;
}
/* TODO: Error handling */
return FALSE;
}
当我使用测试客户端调用对象的方法时,出现分段错误:
waffleman@thegriddle$ ./testObject
TestObject_get_data Entering
** ERROR **: out of memory
aborting...
Aborted (core dumped)
函数返回后程序崩溃。这是我第一次使用 Glib,所以我可能遗漏了一些明显的东西。我一直在阅读本教程,并且大多数示例都有效。不幸的是,它没有向客户端返回数组的示例。
I am implementing a DBUS object with Glib bindings and am having problems with returning GArrays:
gboolean TestObject_get_data(TestObject* obj, GArray* buffer, GError** error)
{
int i;
printf("%s Entering\n", __PRETTY_FUNCTION__);
buffer = g_array_new(FALSE, FALSE, sizeof(char));
if(buffer)
{
for(i = 0; i < 5 ; i++)
{
g_array_append_val(buffer, i);
}
return TRUE;
}
/* TODO: Error handling */
return FALSE;
}
When I call the object's method with a test client, I get a segmentation fault:
waffleman@thegriddle$ ./testObject
TestObject_get_data Entering
** ERROR **: out of memory
aborting...
Aborted (core dumped)
The program crashes after the function returns. This is the first time I've ever used Glib, so there may be something obvious that I am missing. I have been reading this tutorial, and most of the examples works. Unfortunately it does not have an example for returning an array to the client.
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如果要在函数内分配数组,则需要传入引用。您当前的函数会泄漏内存,因为您在创建数组时分配了局部变量。
If you want to allocate the array inside your function you need to pass in a reference. Your current function leaks memory since you are assigning a local variable when you create the array.