2008-12-18 16:42:28 -07:00
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// See malloc.h for overview.
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//
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// TODO(rsc): double-check stats.
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2010-02-03 17:31:34 -07:00
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package runtime
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2008-12-18 16:42:28 -07:00
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#include "runtime.h"
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2011-02-22 15:40:40 -07:00
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#include "stack.h"
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2008-12-18 16:42:28 -07:00
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#include "malloc.h"
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2009-03-30 01:01:07 -06:00
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#include "defs.h"
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2010-02-03 17:31:34 -07:00
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#include "type.h"
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2008-12-18 16:42:28 -07:00
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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MHeap runtime·mheap;
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extern MStats mstats; // defined in extern.go
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2008-12-18 16:42:28 -07:00
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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extern volatile int32 runtime·MemProfileRate;
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2010-03-24 10:40:09 -06:00
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2010-03-23 21:48:23 -06:00
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// Same algorithm from chan.c, but a different
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// instance of the static uint32 x.
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// Not protected by a lock - let the threads use
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// the same random number if they like.
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static uint32
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fastrand1(void)
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{
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static uint32 x = 0x49f6428aUL;
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x += x;
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if(x & 0x80000000L)
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x ^= 0x88888eefUL;
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return x;
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}
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2008-12-18 16:42:28 -07:00
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// Allocate an object of at least size bytes.
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// Small objects are allocated from the per-thread cache's free lists.
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// Large objects (> 32 kB) are allocated straight from the heap.
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void*
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2011-02-02 21:03:47 -07:00
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runtime·mallocgc(uintptr size, uint32 flag, int32 dogc, int32 zeroed)
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2008-12-18 16:42:28 -07:00
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{
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2010-03-24 10:40:09 -06:00
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int32 sizeclass, rate;
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2008-12-18 16:42:28 -07:00
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MCache *c;
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uintptr npages;
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MSpan *s;
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void *v;
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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if(runtime·gcwaiting && g != m->g0 && m->locks == 0)
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runtime·gosched();
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2008-12-19 04:13:39 -07:00
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if(m->mallocing)
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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runtime·throw("malloc/free - deadlock");
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2008-12-19 04:13:39 -07:00
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m->mallocing = 1;
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2008-12-18 16:42:28 -07:00
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if(size == 0)
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size = 1;
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2009-12-03 18:22:23 -07:00
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mstats.nmalloc++;
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2008-12-18 16:42:28 -07:00
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if(size <= MaxSmallSize) {
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// Allocate from mcache free lists.
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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sizeclass = runtime·SizeToClass(size);
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size = runtime·class_to_size[sizeclass];
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2008-12-18 16:42:28 -07:00
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c = m->mcache;
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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v = runtime·MCache_Alloc(c, sizeclass, size, zeroed);
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2008-12-18 16:42:28 -07:00
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if(v == nil)
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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runtime·throw("out of memory");
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2008-12-18 16:42:28 -07:00
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mstats.alloc += size;
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2010-02-08 15:32:22 -07:00
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mstats.total_alloc += size;
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mstats.by_size[sizeclass].nmalloc++;
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2008-12-19 04:13:39 -07:00
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} else {
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// TODO(rsc): Report tracebacks for very large allocations.
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// Allocate directly from heap.
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npages = size >> PageShift;
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if((size & PageMask) != 0)
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npages++;
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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s = runtime·MHeap_Alloc(&runtime·mheap, npages, 0, 1);
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2008-12-19 04:13:39 -07:00
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if(s == nil)
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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runtime·throw("out of memory");
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2010-03-23 21:48:23 -06:00
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size = npages<<PageShift;
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mstats.alloc += size;
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mstats.total_alloc += size;
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2008-12-19 04:13:39 -07:00
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v = (void*)(s->start << PageShift);
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2008-12-18 16:42:28 -07:00
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2010-02-10 22:23:08 -07:00
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// setup for mark sweep
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2011-02-02 21:03:47 -07:00
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runtime·markspan(v, 0, 0, true);
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2009-06-04 22:09:06 -06:00
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}
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2011-02-02 21:03:47 -07:00
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if(!(flag & FlagNoGC))
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runtime·markallocated(v, size, (flag&FlagNoPointers) != 0);
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2009-01-26 18:37:05 -07:00
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2008-12-19 04:13:39 -07:00
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m->mallocing = 0;
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2009-12-03 18:22:23 -07:00
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2011-02-02 21:03:47 -07:00
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if(!(flag & FlagNoProfiling) && (rate = runtime·MemProfileRate) > 0) {
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2010-03-24 10:40:09 -06:00
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if(size >= rate)
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goto profile;
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if(m->mcache->next_sample > size)
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m->mcache->next_sample -= size;
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else {
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// pick next profile time
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if(rate > 0x3fffffff) // make 2*rate not overflow
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rate = 0x3fffffff;
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m->mcache->next_sample = fastrand1() % (2*rate);
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profile:
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2011-02-02 21:03:47 -07:00
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runtime·setblockspecial(v);
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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runtime·MProf_Malloc(v, size);
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2010-03-23 21:48:23 -06:00
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}
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}
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2010-03-08 15:15:44 -07:00
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if(dogc && mstats.heap_alloc >= mstats.next_gc)
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
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runtime·gc(0);
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2008-12-19 04:13:39 -07:00
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return v;
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2008-12-18 16:42:28 -07:00
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}
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2009-01-26 18:37:05 -07:00
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void*
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
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runtime·malloc(uintptr size)
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2009-01-26 18:37:05 -07:00
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{
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
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return runtime·mallocgc(size, 0, 0, 1);
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2009-01-26 18:37:05 -07:00
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}
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2008-12-18 16:42:28 -07:00
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// Free the object whose base pointer is v.
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void
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runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
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runtime·free(void *v)
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2008-12-18 16:42:28 -07:00
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{
|
2011-02-02 21:03:47 -07:00
|
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|
int32 sizeclass;
|
2008-12-18 16:42:28 -07:00
|
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MSpan *s;
|
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|
MCache *c;
|
2011-02-02 21:03:47 -07:00
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uint32 prof;
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uintptr size;
|
2008-12-18 16:42:28 -07:00
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|
2009-01-09 17:22:13 -07:00
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|
if(v == nil)
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return;
|
2011-02-02 21:03:47 -07:00
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// If you change this also change mgc0.c:/^sweepspan,
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// which has a copy of the guts of free.
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2009-01-09 17:22:13 -07:00
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2009-05-29 14:31:53 -06:00
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|
|
if(m->mallocing)
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·throw("malloc/free - deadlock");
|
2009-05-29 14:31:53 -06:00
|
|
|
m->mallocing = 1;
|
|
|
|
|
2011-02-02 21:03:47 -07:00
|
|
|
if(!runtime·mlookup(v, nil, nil, &s)) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("free %p: not an allocated block\n", v);
|
|
|
|
runtime·throw("free runtime·mlookup");
|
2010-02-03 17:31:34 -07:00
|
|
|
}
|
2011-02-02 21:03:47 -07:00
|
|
|
prof = runtime·blockspecial(v);
|
2009-01-26 18:37:05 -07:00
|
|
|
|
2008-12-18 16:42:28 -07:00
|
|
|
// Find size class for v.
|
2010-02-10 22:23:08 -07:00
|
|
|
sizeclass = s->sizeclass;
|
2008-12-18 16:42:28 -07:00
|
|
|
if(sizeclass == 0) {
|
2010-02-10 22:23:08 -07:00
|
|
|
// Large object.
|
2011-02-02 21:03:47 -07:00
|
|
|
size = s->npages<<PageShift;
|
|
|
|
*(uintptr*)(s->start<<PageShift) = 1; // mark as "needs to be zeroed"
|
2011-02-16 11:21:20 -07:00
|
|
|
// Must mark v freed before calling unmarkspan and MHeap_Free:
|
|
|
|
// they might coalesce v into other spans and change the bitmap further.
|
|
|
|
runtime·markfreed(v, size);
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·unmarkspan(v, 1<<PageShift);
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·MHeap_Free(&runtime·mheap, s, 1);
|
2010-02-10 22:23:08 -07:00
|
|
|
} else {
|
|
|
|
// Small object.
|
|
|
|
c = m->mcache;
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
size = runtime·class_to_size[sizeclass];
|
2010-02-10 22:23:08 -07:00
|
|
|
if(size > sizeof(uintptr))
|
|
|
|
((uintptr*)v)[1] = 1; // mark as "needs to be zeroed"
|
2011-02-16 11:21:20 -07:00
|
|
|
// Must mark v freed before calling MCache_Free:
|
|
|
|
// it might coalesce v and other blocks into a bigger span
|
|
|
|
// and change the bitmap further.
|
|
|
|
runtime·markfreed(v, size);
|
2010-02-10 22:23:08 -07:00
|
|
|
mstats.by_size[sizeclass].nfree++;
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·MCache_Free(c, v, sizeclass, size);
|
2008-12-18 16:42:28 -07:00
|
|
|
}
|
2011-02-02 21:03:47 -07:00
|
|
|
mstats.alloc -= size;
|
|
|
|
if(prof)
|
|
|
|
runtime·MProf_Free(v, size);
|
2009-05-29 14:31:53 -06:00
|
|
|
m->mallocing = 0;
|
2008-12-18 16:42:28 -07:00
|
|
|
}
|
|
|
|
|
2009-01-26 18:37:05 -07:00
|
|
|
int32
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·mlookup(void *v, byte **base, uintptr *size, MSpan **sp)
|
2008-12-19 04:13:39 -07:00
|
|
|
{
|
2011-02-02 21:03:47 -07:00
|
|
|
uintptr n, i;
|
2009-02-11 18:54:03 -07:00
|
|
|
byte *p;
|
2008-12-19 04:13:39 -07:00
|
|
|
MSpan *s;
|
|
|
|
|
2009-12-03 18:22:23 -07:00
|
|
|
mstats.nlookup++;
|
2011-01-28 13:03:26 -07:00
|
|
|
s = runtime·MHeap_LookupMaybe(&runtime·mheap, v);
|
2010-02-10 22:23:08 -07:00
|
|
|
if(sp)
|
|
|
|
*sp = s;
|
2008-12-19 04:13:39 -07:00
|
|
|
if(s == nil) {
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·checkfreed(v, 1);
|
2009-01-26 18:37:05 -07:00
|
|
|
if(base)
|
|
|
|
*base = nil;
|
|
|
|
if(size)
|
|
|
|
*size = 0;
|
|
|
|
return 0;
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
p = (byte*)((uintptr)s->start<<PageShift);
|
|
|
|
if(s->sizeclass == 0) {
|
|
|
|
// Large object.
|
2009-01-26 18:37:05 -07:00
|
|
|
if(base)
|
|
|
|
*base = p;
|
|
|
|
if(size)
|
|
|
|
*size = s->npages<<PageShift;
|
|
|
|
return 1;
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
|
|
|
|
2011-02-02 21:03:47 -07:00
|
|
|
if((byte*)v >= (byte*)s->limit) {
|
|
|
|
// pointers past the last block do not count as pointers.
|
2009-02-06 15:41:21 -07:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
n = runtime·class_to_size[s->sizeclass];
|
2009-01-26 18:37:05 -07:00
|
|
|
i = ((byte*)v - p)/n;
|
|
|
|
if(base)
|
|
|
|
*base = p + i*n;
|
|
|
|
if(size)
|
|
|
|
*size = n;
|
2010-02-10 01:00:12 -07:00
|
|
|
|
2009-01-26 18:37:05 -07:00
|
|
|
return 1;
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
|
|
|
|
2008-12-18 16:42:28 -07:00
|
|
|
MCache*
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·allocmcache(void)
|
2008-12-18 16:42:28 -07:00
|
|
|
{
|
2010-03-29 14:06:26 -06:00
|
|
|
MCache *c;
|
|
|
|
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·lock(&runtime·mheap);
|
|
|
|
c = runtime·FixAlloc_Alloc(&runtime·mheap.cachealloc);
|
|
|
|
mstats.mcache_inuse = runtime·mheap.cachealloc.inuse;
|
|
|
|
mstats.mcache_sys = runtime·mheap.cachealloc.sys;
|
|
|
|
runtime·unlock(&runtime·mheap);
|
2010-03-29 14:06:26 -06:00
|
|
|
return c;
|
2008-12-18 16:42:28 -07:00
|
|
|
}
|
|
|
|
|
2010-12-13 14:22:19 -07:00
|
|
|
int32 runtime·sizeof_C_MStats = sizeof(MStats);
|
|
|
|
|
2011-02-02 21:03:47 -07:00
|
|
|
#define MaxArena32 (2U<<30)
|
|
|
|
|
2008-12-18 16:42:28 -07:00
|
|
|
void
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·mallocinit(void)
|
2008-12-18 16:42:28 -07:00
|
|
|
{
|
2011-01-28 13:03:26 -07:00
|
|
|
byte *p;
|
2011-02-02 21:03:47 -07:00
|
|
|
uintptr arena_size, bitmap_size;
|
|
|
|
extern byte end[];
|
2011-01-28 13:03:26 -07:00
|
|
|
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·InitSizes();
|
2011-01-28 13:03:26 -07:00
|
|
|
|
2011-02-02 21:03:47 -07:00
|
|
|
// Set up the allocation arena, a contiguous area of memory where
|
|
|
|
// allocated data will be found. The arena begins with a bitmap large
|
|
|
|
// enough to hold 4 bits per allocated word.
|
2011-01-28 13:03:26 -07:00
|
|
|
if(sizeof(void*) == 8) {
|
|
|
|
// On a 64-bit machine, allocate from a single contiguous reservation.
|
|
|
|
// 16 GB should be big enough for now.
|
|
|
|
//
|
|
|
|
// The code will work with the reservation at any address, but ask
|
|
|
|
// SysReserve to use 0x000000f800000000 if possible.
|
|
|
|
// Allocating a 16 GB region takes away 36 bits, and the amd64
|
|
|
|
// doesn't let us choose the top 17 bits, so that leaves the 11 bits
|
|
|
|
// in the middle of 0x00f8 for us to choose. Choosing 0x00f8 means
|
|
|
|
// that the valid memory addresses will begin 0x00f8, 0x00f9, 0x00fa, 0x00fb.
|
|
|
|
// None of the bytes f8 f9 fa fb can appear in valid UTF-8, and
|
|
|
|
// they are otherwise as far from ff (likely a common byte) as possible.
|
|
|
|
// Choosing 0x00 for the leading 6 bits was more arbitrary, but it
|
|
|
|
// is not a common ASCII code point either. Using 0x11f8 instead
|
|
|
|
// caused out of memory errors on OS X during thread allocations.
|
|
|
|
// These choices are both for debuggability and to reduce the
|
|
|
|
// odds of the conservative garbage collector not collecting memory
|
|
|
|
// because some non-pointer block of memory had a bit pattern
|
|
|
|
// that matched a memory address.
|
2011-02-02 21:03:47 -07:00
|
|
|
//
|
|
|
|
// Actually we reserve 17 GB (because the bitmap ends up being 1 GB)
|
|
|
|
// but it hardly matters: fc is not valid UTF-8 either, and we have to
|
|
|
|
// allocate 15 GB before we get that far.
|
2011-01-28 13:03:26 -07:00
|
|
|
arena_size = 16LL<<30;
|
2011-02-02 21:03:47 -07:00
|
|
|
bitmap_size = arena_size / (sizeof(void*)*8/4);
|
|
|
|
p = runtime·SysReserve((void*)(0x00f8ULL<<32), bitmap_size + arena_size);
|
2011-01-28 13:03:26 -07:00
|
|
|
if(p == nil)
|
|
|
|
runtime·throw("runtime: cannot reserve arena virtual address space");
|
|
|
|
} else {
|
2011-02-02 21:03:47 -07:00
|
|
|
// On a 32-bit machine, we can't typically get away
|
|
|
|
// with a giant virtual address space reservation.
|
|
|
|
// Instead we map the memory information bitmap
|
|
|
|
// immediately after the data segment, large enough
|
|
|
|
// to handle another 2GB of mappings (256 MB),
|
|
|
|
// along with a reservation for another 512 MB of memory.
|
|
|
|
// When that gets used up, we'll start asking the kernel
|
|
|
|
// for any memory anywhere and hope it's in the 2GB
|
|
|
|
// following the bitmap (presumably the executable begins
|
|
|
|
// near the bottom of memory, so we'll have to use up
|
|
|
|
// most of memory before the kernel resorts to giving out
|
|
|
|
// memory before the beginning of the text segment).
|
|
|
|
//
|
|
|
|
// Alternatively we could reserve 512 MB bitmap, enough
|
|
|
|
// for 4GB of mappings, and then accept any memory the
|
|
|
|
// kernel threw at us, but normally that's a waste of 512 MB
|
|
|
|
// of address space, which is probably too much in a 32-bit world.
|
|
|
|
bitmap_size = MaxArena32 / (sizeof(void*)*8/4);
|
|
|
|
arena_size = 512<<20;
|
2011-02-09 13:08:30 -07:00
|
|
|
|
|
|
|
// SysReserve treats the address we ask for, end, as a hint,
|
|
|
|
// not as an absolute requirement. If we ask for the end
|
|
|
|
// of the data segment but the operating system requires
|
|
|
|
// a little more space before we can start allocating, it will
|
|
|
|
// give out a slightly higher pointer. That's fine.
|
|
|
|
// Run with what we get back.
|
|
|
|
p = runtime·SysReserve(end, bitmap_size + arena_size);
|
|
|
|
if(p == nil)
|
|
|
|
runtime·throw("runtime: cannot reserve arena virtual address space");
|
2011-01-28 13:03:26 -07:00
|
|
|
}
|
2011-02-11 12:32:34 -07:00
|
|
|
if((uintptr)p & (((uintptr)1<<PageShift)-1))
|
|
|
|
runtime·throw("runtime: SysReserve returned unaligned address");
|
|
|
|
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·mheap.bitmap = p;
|
|
|
|
runtime·mheap.arena_start = p + bitmap_size;
|
|
|
|
runtime·mheap.arena_used = runtime·mheap.arena_start;
|
|
|
|
runtime·mheap.arena_end = runtime·mheap.arena_start + arena_size;
|
2011-01-28 13:03:26 -07:00
|
|
|
|
|
|
|
// Initialize the rest of the allocator.
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·MHeap_Init(&runtime·mheap, runtime·SysAlloc);
|
|
|
|
m->mcache = runtime·allocmcache();
|
2008-12-18 16:42:28 -07:00
|
|
|
|
|
|
|
// See if it works.
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·free(runtime·malloc(1));
|
2008-12-18 16:42:28 -07:00
|
|
|
}
|
|
|
|
|
2011-01-28 13:03:26 -07:00
|
|
|
void*
|
|
|
|
runtime·MHeap_SysAlloc(MHeap *h, uintptr n)
|
|
|
|
{
|
|
|
|
byte *p;
|
2011-02-02 21:03:47 -07:00
|
|
|
|
|
|
|
if(n <= h->arena_end - h->arena_used) {
|
2011-01-28 13:03:26 -07:00
|
|
|
// Keep taking from our reservation.
|
|
|
|
p = h->arena_used;
|
|
|
|
runtime·SysMap(p, n);
|
|
|
|
h->arena_used += n;
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·MHeap_MapBits(h);
|
2011-01-28 13:03:26 -07:00
|
|
|
return p;
|
|
|
|
}
|
2011-02-02 21:03:47 -07:00
|
|
|
|
|
|
|
// On 64-bit, our reservation is all we have.
|
|
|
|
if(sizeof(void*) == 8)
|
|
|
|
return nil;
|
|
|
|
|
|
|
|
// On 32-bit, once the reservation is gone we can
|
|
|
|
// try to get memory at a location chosen by the OS
|
|
|
|
// and hope that it is in the range we allocated bitmap for.
|
|
|
|
p = runtime·SysAlloc(n);
|
|
|
|
if(p == nil)
|
|
|
|
return nil;
|
|
|
|
|
|
|
|
if(p < h->arena_start || p+n - h->arena_start >= MaxArena32) {
|
runtime: allow use of >512 MB on 32-bit platforms
runtime: memory allocated by OS not in usable range
runtime: out of memory: cannot allocate 1114112-byte block (2138832896 in use)
throw: out of memory
runtime.throw+0x40 /Users/rsc/g/go/src/pkg/runtime/runtime.c:102
runtime.throw(0x1fffd, 0x101)
runtime.mallocgc+0x2af /Users/rsc/g/go/src/pkg/runtime/malloc.c:60
runtime.mallocgc(0x100004, 0x0, 0x1, 0x1, 0xc093, ...)
runtime.mal+0x40 /Users/rsc/g/go/src/pkg/runtime/malloc.c:289
runtime.mal(0x100004, 0x20bc4)
runtime.new+0x26 /Users/rsc/g/go/src/pkg/runtime/malloc.c:296
runtime.new(0x100004, 0x8fe84000, 0x20bc4)
main.main+0x29 /Users/rsc/x.go:11
main.main()
runtime.mainstart+0xf /Users/rsc/g/go/src/pkg/runtime/386/asm.s:93
runtime.mainstart()
runtime.goexit /Users/rsc/g/go/src/pkg/runtime/proc.c:178
runtime.goexit()
----- goroutine created by -----
_rt0_386+0xbf /Users/rsc/g/go/src/pkg/runtime/386/asm.s:80
R=iant, r
CC=golang-dev
https://golang.org/cl/4444073
2011-04-27 21:20:53 -06:00
|
|
|
runtime·printf("runtime: memory allocated by OS not in usable range\n");
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·SysFree(p, n);
|
|
|
|
return nil;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(p+n > h->arena_used) {
|
|
|
|
h->arena_used = p+n;
|
|
|
|
if(h->arena_used > h->arena_end)
|
|
|
|
h->arena_end = h->arena_used;
|
|
|
|
runtime·MHeap_MapBits(h);
|
|
|
|
}
|
|
|
|
|
|
|
|
return p;
|
2011-01-28 13:03:26 -07:00
|
|
|
}
|
|
|
|
|
2008-12-19 04:13:39 -07:00
|
|
|
// Runtime stubs.
|
|
|
|
|
|
|
|
void*
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·mal(uintptr n)
|
2010-03-23 21:48:23 -06:00
|
|
|
{
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
return runtime·mallocgc(n, 0, 1, 1);
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
|
|
|
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
func new(n uint32) (ret *uint8) {
|
|
|
|
ret = runtime·mal(n);
|
2010-06-21 21:53:49 -06:00
|
|
|
}
|
|
|
|
|
2008-12-19 04:13:39 -07:00
|
|
|
// Stack allocator uses malloc/free most of the time,
|
|
|
|
// but if we're in the middle of malloc and need stack,
|
|
|
|
// we have to do something else to avoid deadlock.
|
|
|
|
// In that case, we fall back on a fixed-size free-list
|
|
|
|
// allocator, assuming that inside malloc all the stack
|
|
|
|
// frames are small, so that all the stack allocations
|
|
|
|
// will be a single size, the minimum (right now, 5k).
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
static struct {
|
2008-12-19 04:13:39 -07:00
|
|
|
Lock;
|
|
|
|
FixAlloc;
|
|
|
|
} stacks;
|
|
|
|
|
2011-01-25 14:35:36 -07:00
|
|
|
enum {
|
2011-02-22 15:40:40 -07:00
|
|
|
FixedStack = StackMin,
|
2011-01-25 14:35:36 -07:00
|
|
|
};
|
|
|
|
|
2008-12-19 04:13:39 -07:00
|
|
|
void*
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·stackalloc(uint32 n)
|
2008-12-19 04:13:39 -07:00
|
|
|
{
|
|
|
|
void *v;
|
|
|
|
|
runtime: always run stackalloc on scheduler stack
Avoids deadlocks like the one below, in which a stack split happened
in order to call lock(&stacks), but then the stack unsplit cannot run
because stacks is now locked.
The only code calling stackalloc that wasn't on a scheduler
stack already was malg, which creates a new goroutine.
runtime.futex+0x23 /home/rsc/g/go/src/pkg/runtime/linux/amd64/sys.s:139
runtime.futex()
futexsleep+0x50 /home/rsc/g/go/src/pkg/runtime/linux/thread.c:51
futexsleep(0x5b0188, 0x300000003, 0x100020000, 0x4159e2)
futexlock+0x85 /home/rsc/g/go/src/pkg/runtime/linux/thread.c:119
futexlock(0x5b0188, 0x5b0188)
runtime.lock+0x56 /home/rsc/g/go/src/pkg/runtime/linux/thread.c:158
runtime.lock(0x5b0188, 0x7f0d27b4a000)
runtime.stackfree+0x4d /home/rsc/g/go/src/pkg/runtime/malloc.goc:336
runtime.stackfree(0x7f0d27b4a000, 0x1000, 0x8, 0x7fff37e1e218)
runtime.oldstack+0xa6 /home/rsc/g/go/src/pkg/runtime/proc.c:705
runtime.oldstack()
runtime.lessstack+0x22 /home/rsc/g/go/src/pkg/runtime/amd64/asm.s:224
runtime.lessstack()
----- lessstack called from goroutine 2 -----
runtime.lock+0x56 /home/rsc/g/go/src/pkg/runtime/linux/thread.c:158
runtime.lock(0x5b0188, 0x40a5e2)
runtime.stackalloc+0x55 /home/rsc/g/go/src/pkg/runtime/malloc.c:316
runtime.stackalloc(0x1000, 0x4055b0)
runtime.malg+0x3d /home/rsc/g/go/src/pkg/runtime/proc.c:803
runtime.malg(0x1000, 0x40add9)
runtime.newproc1+0x12b /home/rsc/g/go/src/pkg/runtime/proc.c:854
runtime.newproc1(0xf840027440, 0x7f0d27b49230, 0x0, 0x49f238, 0x40, ...)
runtime.newproc+0x2f /home/rsc/g/go/src/pkg/runtime/proc.c:831
runtime.newproc(0x0, 0xf840027440, 0xf800000010, 0x44b059)
...
R=r, r2
CC=golang-dev
https://golang.org/cl/4216045
2011-02-23 13:51:20 -07:00
|
|
|
// Stackalloc must be called on scheduler stack, so that we
|
|
|
|
// never try to grow the stack during the code that stackalloc runs.
|
|
|
|
// Doing so would cause a deadlock (issue 1547).
|
|
|
|
if(g != m->g0)
|
|
|
|
runtime·throw("stackalloc not on scheduler stack");
|
|
|
|
|
2011-01-25 14:35:36 -07:00
|
|
|
if(m->mallocing || m->gcing || n == FixedStack) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·lock(&stacks);
|
2008-12-19 04:13:39 -07:00
|
|
|
if(stacks.size == 0)
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·FixAlloc_Init(&stacks, n, runtime·SysAlloc, nil, nil);
|
2008-12-19 04:13:39 -07:00
|
|
|
if(stacks.size != n) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("stackalloc: in malloc, size=%D want %d", (uint64)stacks.size, n);
|
|
|
|
runtime·throw("stackalloc");
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
v = runtime·FixAlloc_Alloc(&stacks);
|
2010-03-29 14:06:26 -06:00
|
|
|
mstats.stacks_inuse = stacks.inuse;
|
|
|
|
mstats.stacks_sys = stacks.sys;
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·unlock(&stacks);
|
2008-12-19 04:13:39 -07:00
|
|
|
return v;
|
|
|
|
}
|
2011-02-02 21:03:47 -07:00
|
|
|
return runtime·mallocgc(n, FlagNoProfiling|FlagNoGC, 0, 0);
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
2011-01-25 14:35:36 -07:00
|
|
|
runtime·stackfree(void *v, uintptr n)
|
2008-12-19 04:13:39 -07:00
|
|
|
{
|
2011-01-25 14:35:36 -07:00
|
|
|
if(m->mallocing || m->gcing || n == FixedStack) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·lock(&stacks);
|
|
|
|
runtime·FixAlloc_Free(&stacks, v);
|
2010-03-29 14:06:26 -06:00
|
|
|
mstats.stacks_inuse = stacks.inuse;
|
|
|
|
mstats.stacks_sys = stacks.sys;
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·unlock(&stacks);
|
2008-12-19 04:13:39 -07:00
|
|
|
return;
|
|
|
|
}
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·free(v);
|
2008-12-19 04:13:39 -07:00
|
|
|
}
|
2009-06-30 21:01:50 -06:00
|
|
|
|
|
|
|
func Alloc(n uintptr) (p *byte) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
p = runtime·malloc(n);
|
2009-06-30 21:01:50 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
func Free(p *byte) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·free(p);
|
2009-06-30 21:01:50 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
func Lookup(p *byte) (base *byte, size uintptr) {
|
2011-02-02 21:03:47 -07:00
|
|
|
runtime·mlookup(p, &base, &size, nil);
|
2009-06-30 21:01:50 -06:00
|
|
|
}
|
|
|
|
|
|
|
|
func GC() {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·gc(1);
|
2009-06-30 21:01:50 -06:00
|
|
|
}
|
2010-02-03 17:31:34 -07:00
|
|
|
|
|
|
|
func SetFinalizer(obj Eface, finalizer Eface) {
|
|
|
|
byte *base;
|
|
|
|
uintptr size;
|
|
|
|
FuncType *ft;
|
2010-02-08 22:41:54 -07:00
|
|
|
int32 i, nret;
|
|
|
|
Type *t;
|
2010-02-10 01:00:12 -07:00
|
|
|
|
2010-02-03 17:31:34 -07:00
|
|
|
if(obj.type == nil) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("runtime.SetFinalizer: first argument is nil interface\n");
|
2010-02-03 17:31:34 -07:00
|
|
|
throw:
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·throw("runtime.SetFinalizer");
|
2010-02-03 17:31:34 -07:00
|
|
|
}
|
|
|
|
if(obj.type->kind != KindPtr) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("runtime.SetFinalizer: first argument is %S, not pointer\n", *obj.type->string);
|
2010-02-03 17:31:34 -07:00
|
|
|
goto throw;
|
|
|
|
}
|
2011-02-02 21:03:47 -07:00
|
|
|
if(!runtime·mlookup(obj.data, &base, &size, nil) || obj.data != base) {
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("runtime.SetFinalizer: pointer not at beginning of allocated block\n");
|
2010-02-03 17:31:34 -07:00
|
|
|
goto throw;
|
|
|
|
}
|
2010-02-08 22:41:54 -07:00
|
|
|
nret = 0;
|
2010-02-03 17:31:34 -07:00
|
|
|
if(finalizer.type != nil) {
|
|
|
|
if(finalizer.type->kind != KindFunc) {
|
|
|
|
badfunc:
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·printf("runtime.SetFinalizer: second argument is %S, not func(%S)\n", *finalizer.type->string, *obj.type->string);
|
2010-02-03 17:31:34 -07:00
|
|
|
goto throw;
|
|
|
|
}
|
|
|
|
ft = (FuncType*)finalizer.type;
|
2010-02-08 22:41:54 -07:00
|
|
|
if(ft->dotdotdot || ft->in.len != 1 || *(Type**)ft->in.array != obj.type)
|
2010-02-03 17:31:34 -07:00
|
|
|
goto badfunc;
|
2010-02-10 01:00:12 -07:00
|
|
|
|
2010-02-08 22:41:54 -07:00
|
|
|
// compute size needed for return parameters
|
|
|
|
for(i=0; i<ft->out.len; i++) {
|
|
|
|
t = ((Type**)ft->out.array)[i];
|
|
|
|
nret = (nret + t->align - 1) & ~(t->align - 1);
|
|
|
|
nret += t->size;
|
|
|
|
}
|
|
|
|
nret = (nret + sizeof(void*)-1) & ~(sizeof(void*)-1);
|
|
|
|
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
if(runtime·getfinalizer(obj.data, 0)) {
|
2011-05-10 11:47:56 -06:00
|
|
|
runtime·printf("runtime.SetFinalizer: finalizer already set\n");
|
2010-02-03 17:31:34 -07:00
|
|
|
goto throw;
|
|
|
|
}
|
|
|
|
}
|
runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almost
Prefix all external symbols in runtime by runtime·,
to avoid conflicts with possible symbols of the same
name in linked-in C libraries. The obvious conflicts
are printf, malloc, and free, but hide everything to
avoid future pain.
The symbols left alone are:
** known to cgo **
_cgo_free
_cgo_malloc
libcgo_thread_start
initcgo
ncgocall
** known to linker **
_rt0_$GOARCH
_rt0_$GOARCH_$GOOS
text
etext
data
end
pclntab
epclntab
symtab
esymtab
** known to C compiler **
_divv
_modv
_div64by32
etc (arch specific)
Tested on darwin/386, darwin/amd64, linux/386, linux/amd64.
Built (but not tested) for freebsd/386, freebsd/amd64, linux/arm, windows/386.
R=r, PeterGo
CC=golang-dev
https://golang.org/cl/2899041
2010-11-04 12:00:19 -06:00
|
|
|
runtime·addfinalizer(obj.data, finalizer.data, nret);
|
2010-02-03 17:31:34 -07:00
|
|
|
}
|