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To: Kevin Buettner <kevinb@redhat.com>
Subject: Re: [PATCH v2 1/7]  Add target method for converting thread handle to  thread_info struct pointer
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Date: Fri, 05 May 2017 03:26:00 -0000
From: Simon Marchi <simon.marchi@polymtl.ca>
Cc: gdb-patches@sourceware.org
In-Reply-To: <20170408230651.45120811@pinnacle.lan>
References: <20170408224959.67164a27@pinnacle.lan> <20170408230651.45120811@pinnacle.lan>
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On 2017-04-09 02:06, Kevin Buettner wrote:
> --- a/gdb/linux-thread-db.c
> +++ b/gdb/linux-thread-db.c
> @@ -1410,6 +1410,29 @@ thread_db_extra_thread_info (struct target_ops 
> *self,
>    return NULL;
>  }
> 
> +/* Return pointer to the thread_info struct which corresponds to
> +   THREAD_HANDLE (having length HANDLE_LEN).  */
> +static struct thread_info *
> +thread_db_thread_handle_to_thread_info (struct target_ops *ops,
> +					const gdb_byte *thread_handle,
> +					int handle_len)
> +{
> +  struct thread_info *tp;
> +  thread_t handle_tid;
> +
> +  gdb_assert (handle_len == sizeof (handle_tid));

I assume this is always true, because if you are using libthread_db, it 
implies that GDB is of the exact same architecture (32 bits vs 64 bits) 
as the inferior?

Simon