Russ Cox b3932baba4 runtime: fix sudog leak ... The SudoG used to sit on the stack, so it was cheap to allocated and didn't need to be cleaned up when finished. For the conversion to Go, we had to move sudog off the stack for a few reasons, so we added a cache of recently used sudogs to keep allocation cheap. But we didn't add any of the necessary cleanup before adding a SudoG to the new cache, and so the cached SudoGs had stale pointers inside them that have caused all sorts of awful, hard to debug problems. CL 155760043 made sure SudoG.elem is cleaned up. CL 150520043 made sure SudoG.selectdone is cleaned up. This CL makes sure SudoG.next, SudoG.prev, and SudoG.waitlink are cleaned up. I should have done this when I did the other two fields; instead I wasted a week tracking down a leak they caused. A dangling SudoG.waitlink can point into a sudogcache list that has been "forgotten" in order to let the GC collect it, but that dangling .waitlink keeps the list from being collected. And then the list holding the SudoG with the dangling waitlink can find itself in the same situation, and so on. We end up with lists of lists of unusable SudoGs that are still linked into the object graph and never collected (given the right mix of non-trivial selects and non-channel synchronization). More details in golang.org/issue/9110. Fixes #9110. LGTM=r R=r CC=dvyukov, golang-codereviews, iant, khr https://golang.org/cl/177870043		2014-11-16 16:44:45 -05:00
..
bench	build: adjustments for move from src/pkg to src	2014-09-08 00:06:45 -04:00
bugs
chan	cmd/gc: implement 'for range x {'	2014-07-16 19:27:10 -04:00
ddd2.dir
dwarf
fixedbugs	runtime: fix sudog leak	2014-11-16 16:44:45 -05:00
import2.dir
import4.dir	test: match gccgo import error messages	2013-12-12 19:02:11 -08:00
interface	cmd/gc: blank methods are not permitted in interface types	2014-10-15 09:55:13 -07:00
ken
method4.dir	cmd/gc: do not omit wrapper for expression (interface{...}).F	2014-01-07 13:26:48 +01:00
safe
stress	build: adjustments for move from src/pkg to src	2014-09-08 00:06:45 -04:00
syntax	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
64bit.go
235.go
alias1.go
alias.go
append.go
args.go
assign1.go
assign.go	cmd/gc: prohibit short variable declarations containing duplicate symbols	2014-10-06 17:16:39 -04:00
bigalg.go
bigmap.go
blank1.go	test: match gccgo error messages for blank1.go	2013-09-28 15:19:05 -07:00
blank.go	test: revert changes made for Go SSA interpreter test.	2013-10-08 14:36:20 -04:00
bom.go
bombad.go
bounds.go
chancap.go
char_lit1.go
char_lit.go
closedchan.go
closure.go
cmp6.go	cmd/gc: do not consider length zero arrays as comparable.	2014-01-31 00:30:56 +01:00
cmp.go	cmd/gc: do not nop-convert equivalent but different interface types.	2014-02-27 08:07:50 +01:00
cmplx.go
cmplxdivide1.go
cmplxdivide.c
cmplxdivide.go
complit1.go
complit.go
compos.go
const1.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
const2.go
const3.go
const4.go
const5.go	cmd/gc: reject builtin function calls in len(fixed array) constants	2014-04-03 19:04:33 -04:00
const6.go
const.go
convert1.go
convert3.go
convert.go
convlit1.go
convlit.go
convT2X.go
copy.go
crlf.go
ddd1.go
ddd2.go
ddd.go
decl.go
declbad.go
defer.go
deferfin.go	runtime: combine small NoScan allocations	2014-01-24 22:35:11 +04:00
deferprint.go
deferprint.out
divide.go
divmod.go	all: fix a few spelling errors in source comments	2013-12-27 08:59:02 -08:00
empty.go
env.go
eof1.go
eof.go
errchk
escape2.go	cmd/gc: run escape analysis always (even in -N mode)	2014-09-24 15:20:03 -04:00
escape2n.go	cmd/gc: run escape analysis always (even in -N mode)	2014-09-24 15:20:03 -04:00
escape3.go
escape4.go
escape5.go	cmd/gc: distinguish unnamed vs blank-named return variables better	2014-02-13 20:59:39 -05:00
escape.go
float_lit2.go	test: fix two typos in float_lit2.go	2014-05-21 17:19:12 -04:00
float_lit3.go	test/float_lit2.go: rewrite to test values near boundaries	2014-05-21 17:12:06 -04:00
float_lit.go
floatcmp.go
for.go
func1.go
func2.go
func3.go
func4.go
func5.go
func6.go
func7.go
func8.go
func.go
funcdup2.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
funcdup.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
gc1.go
gc2.go	build: make nacl pass	2014-05-20 12:10:19 -04:00
gc.go
gcstring.go	runtime: fix empty string handling in garbage collector	2014-03-11 23:58:39 -04:00
golden.out
goprint.go
goprint.out
goto.go
helloworld.go
helloworld.out
if.go
import1.go	test: match gccgo import error messages	2013-12-12 19:02:11 -08:00
import2.go
import4.go
import5.go
import.go
index0.go
index1.go
index2.go
index.go	test: recognize gccgo error message in index.go	2013-09-27 20:38:52 -07:00
indirect1.go
indirect.go
init1.go
init.go
initcomma.go
initialize.go
initializerr.go
int_lit.go
intcvt.go
iota.go
label1.go
label.go
linkx_run.go	test: fix nacl build	2014-11-09 21:10:49 -05:00
linkx.go	test: move linkx and sinit to run.go	2014-11-06 15:14:08 -05:00
literal.go
live1.go	cmd/gc: correct liveness for fat variables	2014-02-15 10:58:55 -05:00
live2.go	cmd/gc: fix call order in array literal of slice literal of make chan	2014-09-30 12:48:47 -04:00
live.go	cmd/gc: fix call order in array literal of slice literal of make chan	2014-09-30 12:48:47 -04:00
mallocfin.go
map1.go
map.go	test/mapnan.go: add regression test for non-empty interfaces.	2014-08-06 17:02:55 -04:00
maplinear.go	test: make maplinear more robust	2014-10-27 18:59:02 -04:00
method1.go
method2.go
method3.go
method4.go
method5.go
method.go
named1.go	cmd/gc: comma-ok assignments produce untyped bool as 2nd result	2014-08-11 16:11:55 -07:00
named.go
nil.go
nilcheck.go
nilptr2.go	test: revert changes made for Go SSA interpreter test.	2013-10-08 14:36:20 -04:00
nilptr3.go	cmd/gc: correct handling of globals, func args, results	2014-05-15 15:34:53 -04:00
nilptr4.go	cmd/gc: fix bad checknil with ints on 32 bit compilers	2014-02-26 12:25:13 -08:00
nilptr.go
nosplit.go	liblink: make GO_ARGS the default for functions beginning with ·	2014-09-16 17:39:55 -04:00
nul1.go
parentype.go
peano.go
print.go	runtime: move built-in print routines to go.	2014-07-31 13:48:48 -07:00
print.out	runtime: move built-in print routines to go.	2014-07-31 13:48:48 -07:00
printbig.go
printbig.out
range.go	cmd/gc: implement 'for range x {'	2014-07-16 19:27:10 -04:00
recover1.go
recover2.go
recover3.go
recover.go	test: add more cases to recover.go	2014-10-22 08:06:15 -07:00
rename1.go
rename.go
reorder2.go	cmd/gc: shorten temporary lifetimes when possible	2014-04-01 13:31:38 -04:00
reorder.go
return.go
rotate0.go
rotate1.go
rotate2.go
rotate3.go
rotate.go
run	test/run: add /usr/pkg/bin to PATH.	2014-03-03 02:16:15 -05:00
run.go	test: move linkx and sinit to run.go	2014-11-06 15:14:08 -05:00
rune.go
runtime.go
shift1.go	test: avoid "declared but not used" errors in shift1.go	2014-07-20 12:25:24 -07:00
shift2.go
sieve.go
sigchld.go	test: skip SIGCHLD test on Plan 9	2014-01-29 09:28:23 +01:00
sigchld.out
simassign.go
sinit_run.go	test: fix nacl build	2014-11-09 21:10:49 -05:00
sinit.go	test: move linkx and sinit to run.go	2014-11-06 15:14:08 -05:00
sizeof.go
slice3.go	cmd/gc, runtime: treat slices and strings like pointers in garbage collection	2014-08-25 14:38:19 -04:00
slice3err.go	test: match gccgo error messages	2013-12-12 17:18:12 -08:00
slicecap.go	cmd/gc, runtime: treat slices and strings like pointers in garbage collection	2014-08-25 14:38:19 -04:00
solitaire.go
stack.go
string_lit.go	test: add []rune case to string_lit.go	2013-12-12 17:17:02 -08:00
stringrange.go
struct0.go
switch3.go
switch4.go
switch.go
testlib
tinyfin.go	runtime: combine small NoScan allocations	2014-01-24 22:35:11 +04:00
torture.go	cmd/8g: don't allocate a register early for cap(CHAN).	2014-07-01 09:20:51 +02:00
turing.go
typecheck.go	cmd/gc: silence assignment errors to undefined symbols	2014-01-03 21:03:20 +01:00
typeswitch1.go
typeswitch2.go
typeswitch3.go
typeswitch.go
undef.go
utf.go
varerr.go
varinit.go
zerodivide.go