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2dcc908538
We use thread_get_name and thread_set_name to get and set the thread name, so nothing is stored in the thread structure since these functions are supposed to be called sparingly. One notable difference with Linux is that the thread name is up to 32 chars, whereas Linux's is 16. Also added a mach_RPC_CHECK to check for the existing of gnumach RPCs.
68 lines
2.1 KiB
C
68 lines
2.1 KiB
C
/* pthread_getname_np.
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Copyright (C) 2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <hurd.h>
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#include <mach_debug/mach_debug_types.h>
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#include <pthread.h>
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#include <pthreadP.h>
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#include <string.h>
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#include <pt-internal.h>
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int
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__pthread_getname_np (pthread_t thread, char *buf, size_t len)
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{
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#ifdef HAVE_MACH_THREAD_GET_NAME
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/* GNU Mach doesn't export this so we have to define it ourselves. */
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#define MACH_THREAD_NAME_MAX 32
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struct __pthread *pthread;
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error_t err;
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kernel_debug_name_t tmp;
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/* Note that we don't check for len to be MACH_THREAD_NAME_MAX
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* since we want to be more compatible with the Linux API which
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* requires that the buffer is at least 16 bytes long.
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*
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* We check for at least 1 byte since we truncate the result below. */
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if (len < 1)
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return ERANGE;
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if (len > MACH_THREAD_NAME_MAX)
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len = MACH_THREAD_NAME_MAX;
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/* Lookup the thread structure for THREAD. */
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pthread = __pthread_getid (thread);
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if (pthread == NULL)
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return ESRCH;
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/* __thread_get_name expects a buffer of size sizeof (kernel_debug_name_t)
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* and anything smaller will overflow. */
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err = __thread_get_name (pthread->kernel_thread, tmp);
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if (err != KERN_SUCCESS)
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return __hurd_fail (err);
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/* Truncate the source name to fit in the destination buffer. */
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tmp[len - 1] = '\0';
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memcpy (buf, tmp, len);
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return 0;
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#else
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return ENOTSUP;
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#endif
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}
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weak_alias (__pthread_getname_np, pthread_getname_np)
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