50 lines
1.9 KiB
C
50 lines
1.9 KiB
C
/* Low-level thread creation for NPTL. NaCl version.
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Copyright (C) 2015 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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<http://www.gnu.org/licenses/>. */
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#include <nacl-interfaces.h>
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#include <pthread-pids.h>
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/* See the comments in pthread_create.c for the requirements for these
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two macros and the create_thread function. */
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#define START_THREAD_DEFN \
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static void __attribute__ ((noreturn)) start_thread (void)
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#define START_THREAD_SELF THREAD_SELF
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/* pthread_create.c defines this using START_THREAD_DEFN
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We need a forward declaration here so we can take its address. */
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static void start_thread (void) __attribute__ ((noreturn));
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static int
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create_thread (struct pthread *pd, const struct pthread_attr *attr,
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bool stopped_start, STACK_VARIABLES_PARMS, bool *thread_ran)
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{
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pd->tid = __nacl_get_tid (pd);
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pd->stopped_start = stopped_start;
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if (__glibc_unlikely (stopped_start))
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/* We make sure the thread does not run far by forcing it to get a
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lock. We lock it here too so that the new thread cannot continue
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until we tell it to. */
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lll_lock (pd->lock, LLL_PRIVATE);
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TLS_DEFINE_INIT_TP (tp, pd);
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return __nacl_irt_thread.thread_create (&start_thread, stackaddr, tp);
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}
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