From 29cd838eab01ed7110f3ccb2e8c6a35c8a31dbcc Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Thu, 11 Apr 2024 10:21:29 +0200 Subject: Adding upstream version 1:0.1.9998svn3589+dfsg. Signed-off-by: Daniel Baumann --- src/kash/shthread.h | 89 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 src/kash/shthread.h (limited to 'src/kash/shthread.h') diff --git a/src/kash/shthread.h b/src/kash/shthread.h new file mode 100644 index 0000000..046cee3 --- /dev/null +++ b/src/kash/shthread.h @@ -0,0 +1,89 @@ +/* $Id: shthread.h 3515 2021-12-16 12:54:03Z bird $ */ +/** @file + * + * Shell thread methods. + * + * Copyright (c) 2007-2010 knut st. osmundsen + * + * + * This file is part of kBuild. + * + * kBuild is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * kBuild is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with kBuild; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef ___shthread_h___ +#define ___shthread_h___ + +#include "shtypes.h" + +typedef union shmtx +{ + char b[64]; + KU64 au64[64/sizeof(KU64)]; + void *aptrs[64/sizeof(void *)]; +} shmtx; + +/** Magic mutex value (final u64). + * This is used to detect whether the mutex has been initialized or not, + * allowing shmtx_delete to be called more than once without doing harm. + * @internal */ +#define SHMTX_MAGIC KU64_C(0x8888000019641018) /**< Charles Stross */ +/** Index into shmtx::au64 of the SHMTX_MAGIC value. + * @internal */ +#define SHMTX_MAGIC_IDX (sizeof(shmtx) / sizeof(KU64) - 1) + +typedef struct shmtxtmp { int i; } shmtxtmp; + +typedef uintptr_t shtid; + +void shthread_set_shell(struct shinstance *); +struct shinstance *shthread_get_shell(void); +void shthread_set_name(const char *name); + +int shmtx_init(shmtx *pmtx); +void shmtx_delete(shmtx *pmtx); +void shmtx_enter(shmtx *pmtx, shmtxtmp *ptmp); +void shmtx_leave(shmtx *pmtx, shmtxtmp *ptmp); + + +K_INLINE unsigned sh_atomic_inc(KU32 volatile *valuep) +{ +#ifdef _MSC_VER + return _InterlockedIncrement((long *)valuep); +#elif defined(__GNUC__) && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32) + unsigned uRet; + __asm__ __volatile__("lock; xaddl %1, %0" : "=m" (*valuep), "=r" (uRet) : "m" (*valuep), "1" (1) : "memory", "cc"); + return uRet + 1; +#else + return __sync_add_and_fetch(valuep, 1); +#endif +} + +K_INLINE unsigned sh_atomic_dec(unsigned volatile *valuep) +{ +#ifdef _MSC_VER + return _InterlockedDecrement((long *)valuep); +#elif defined(__GNUC__) && (K_ARCH == K_ARCH_AMD64 || K_ARCH == K_ARCH_X86_32) + unsigned uRet; + __asm__ __volatile__("lock; xaddl %1, %0" : "=m" (*valuep), "=r" (uRet) : "m" (*valuep), "1" (-1) : "memory", "cc"); + return uRet - 1; +#else + return __sync_sub_and_fetch(valuep, 1); +#endif +} + +#endif + -- cgit v1.2.3