92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/*
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* \brief pthread_create implementation
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* \author Christian Prochaska
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* \author Christian Helmuth
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* \date 2012-03-12
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*
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* Purpose of a single file for pthread_create is that other application may
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* easily replace this implementation with another one.
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*/
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/*
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* Copyright (C) 2012-2020 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <base/lock.h>
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#include <util/string.h>
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/* libc includes */
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#include <libc/allocator.h>
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#include <errno.h>
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/* libc-internal includes */
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#include <internal/thread_create.h>
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#include <internal/pthread.h>
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static Genode::String<32> pthread_name()
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{
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static Genode::Lock mutex;
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static unsigned id = 0;
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Genode::Lock::Guard guard(mutex);
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++id;
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return { "pthread.", id };
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}
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int Libc::pthread_create(pthread_t *thread,
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void *(*start_routine) (void *), void *arg,
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size_t stack_size, char const * name,
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Cpu_session * cpu, Affinity::Location location)
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{
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Libc::Allocator alloc { };
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pthread_t thread_obj = new (alloc)
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pthread(start_routine, arg,
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stack_size, name, cpu, location);
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if (!thread_obj)
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return EAGAIN;
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*thread = thread_obj;
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thread_obj->start();
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return 0;
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}
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int Libc::pthread_create(pthread_t *thread, Thread &t)
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{
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Libc::Allocator alloc { };
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pthread_t thread_obj = new (alloc) pthread(t);
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if (!thread_obj)
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return EAGAIN;
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*thread = thread_obj;
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return 0;
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}
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extern "C"
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{
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int pthread_create(pthread_t *thread, const pthread_attr_t *attr,
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void *(*start_routine) (void *), void *arg)
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{
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size_t const stack_size = (attr && *attr && (*attr)->stack_size)
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? (*attr)->stack_size
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: Libc::Component::stack_size();
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return Libc::pthread_create(thread, start_routine, arg, stack_size,
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pthread_name().string(), nullptr,
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Genode::Affinity::Location());
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}
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}
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