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Diffstat (limited to 'src/runtime/mem_plan9.c')
-rw-r--r-- | src/runtime/mem_plan9.c | 121 |
1 files changed, 0 insertions, 121 deletions
diff --git a/src/runtime/mem_plan9.c b/src/runtime/mem_plan9.c deleted file mode 100644 index d673d6f83..000000000 --- a/src/runtime/mem_plan9.c +++ /dev/null @@ -1,121 +0,0 @@ -// Copyright 2010 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -#include "runtime.h" -#include "defs_GOOS_GOARCH.h" -#include "arch_GOARCH.h" -#include "malloc.h" -#include "os_GOOS.h" -#include "textflag.h" - -extern byte runtime·end[]; -#pragma dataflag NOPTR -static byte *bloc = { runtime·end }; -static Mutex memlock; - -enum -{ - Round = PAGESIZE-1 -}; - -static void* -brk(uintptr nbytes) -{ - uintptr bl; - - runtime·lock(&memlock); - // Plan 9 sbrk from /sys/src/libc/9sys/sbrk.c - bl = ((uintptr)bloc + Round) & ~Round; - if(runtime·brk_((void*)(bl + nbytes)) < 0) { - runtime·unlock(&memlock); - return nil; - } - bloc = (byte*)bl + nbytes; - runtime·unlock(&memlock); - return (void*)bl; -} - -static void -sysalloc(void) -{ - uintptr nbytes; - uint64 *stat; - void *p; - - nbytes = g->m->scalararg[0]; - stat = g->m->ptrarg[0]; - g->m->scalararg[0] = 0; - g->m->ptrarg[0] = nil; - - p = brk(nbytes); - if(p != nil) - runtime·xadd64(stat, nbytes); - - g->m->ptrarg[0] = p; -} - -#pragma textflag NOSPLIT -void* -runtime·sysAlloc(uintptr nbytes, uint64 *stat) -{ - void (*fn)(void); - void *p; - - g->m->scalararg[0] = nbytes; - g->m->ptrarg[0] = stat; - fn = sysalloc; - runtime·onM(&fn); - p = g->m->ptrarg[0]; - g->m->ptrarg[0] = nil; - return p; -} - -void -runtime·SysFree(void *v, uintptr nbytes, uint64 *stat) -{ - runtime·xadd64(stat, -(uint64)nbytes); - runtime·lock(&memlock); - // from tiny/mem.c - // Push pointer back if this is a free - // of the most recent sysAlloc. - nbytes += (nbytes + Round) & ~Round; - if(bloc == (byte*)v+nbytes) - bloc -= nbytes; - runtime·unlock(&memlock); -} - -void -runtime·SysUnused(void *v, uintptr nbytes) -{ - USED(v, nbytes); -} - -void -runtime·SysUsed(void *v, uintptr nbytes) -{ - USED(v, nbytes); -} - -void -runtime·SysMap(void *v, uintptr nbytes, bool reserved, uint64 *stat) -{ - // SysReserve has already allocated all heap memory, - // but has not adjusted stats. - USED(v, reserved); - runtime·xadd64(stat, nbytes); -} - -void -runtime·SysFault(void *v, uintptr nbytes) -{ - USED(v, nbytes); -} - -void* -runtime·SysReserve(void *v, uintptr nbytes, bool *reserved) -{ - USED(v); - *reserved = true; - return brk(nbytes); -} |