Add sched_yield(2).
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@ -152,6 +152,7 @@
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#define SYSCALL_FSTATVFSAT 128
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#define SYSCALL_FSTATVFSAT 128
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#define SYSCALL_RDMSR 129
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#define SYSCALL_RDMSR 129
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#define SYSCALL_WRMSR 130
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#define SYSCALL_WRMSR 130
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#define SYSCALL_MAX_NUM 131 /* index of highest constant + 1 */
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#define SYSCALL_SCHED_YIELD 131
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#define SYSCALL_MAX_NUM 132 /* index of highest constant + 1 */
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#endif
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#endif
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@ -311,6 +311,11 @@ static int sys_usleep(size_t usecs)
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return 0;
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return 0;
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}
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}
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static int sys_sched_yield(void)
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{
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return kthread_yield(), 0;
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}
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void Init()
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void Init()
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{
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{
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premagic = postmagic = SCHED_MAGIC;
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premagic = postmagic = SCHED_MAGIC;
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@ -329,6 +334,7 @@ void Init()
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Syscall::Register(SYSCALL_SLEEP, (void*) sys_sleep);
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Syscall::Register(SYSCALL_SLEEP, (void*) sys_sleep);
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Syscall::Register(SYSCALL_USLEEP, (void*) sys_usleep);
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Syscall::Register(SYSCALL_USLEEP, (void*) sys_usleep);
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Syscall::Register(SYSCALL_SCHED_YIELD, (void*) sys_sched_yield);
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}
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}
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} // namespace Scheduler
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} // namespace Scheduler
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@ -339,6 +339,7 @@ pwd/getpwuid.o \
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pwd/getpwuid_r.o \
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pwd/getpwuid_r.o \
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pwd/openpw.o \
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pwd/openpw.o \
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pwd/setpwent.o \
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pwd/setpwent.o \
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sched/sched_yield.o \
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signal/kill.o \
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signal/kill.o \
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signal/killpg.o \
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signal/killpg.o \
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signal/psignal.o \
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signal/psignal.o \
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@ -0,0 +1,36 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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sched.h
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Executing scheduling.
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*******************************************************************************/
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#ifndef INCLUDE_SCHED_H
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#define INCLUDE_SCHED_H
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int sched_yield(void);
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__END_DECLS
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#endif
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@ -0,0 +1,34 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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This file is part of the Sortix C Library.
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The Sortix C Library is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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The Sortix C Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the Sortix C Library. If not, see <http://www.gnu.org/licenses/>.
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sched/sched_yield.cpp
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Yields control of the CPU so another thread can run.
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*******************************************************************************/
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#include <sys/syscall.h>
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#include <sched.h>
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DEFN_SYSCALL0(int, sys_sched_yield, SYSCALL_SCHED_YIELD);
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extern "C" int sched_yield(void)
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{
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return sys_sched_yield();
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}
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