aboutsummaryrefslogtreecommitdiff
path: root/src/pkg/runtime/extern.go
AgeCommit message (Collapse)Author
2014-09-08build: move package sources from src/pkg to srcRuss Cox
Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg.
2014-09-03runtime: convert symtab.c into symtab.goRuss Cox
Because symtab.c was partially converted before, the diffs are not terribly useful. The earlier conversion was trying to refactor or clean up the code in addition to doing the translation. It also made a mistake by redefining Func to be something users could overwrite. I undid those changes, making symtab.go a more literal line-for-line translation of symtab.c instead. LGTM=josharian R=golang-codereviews, dave, bradfitz, josharian CC=golang-codereviews, iant, khr, r https://golang.org/cl/140880043
2014-09-03runtime: deferproc/deferreturn in GoKeith Randall
LGTM=rsc R=golang-codereviews, rsc, khr CC=golang-codereviews https://golang.org/cl/139900043
2014-09-02runtime: convert traceback*.c to GoRuss Cox
The two converted files were nearly identical. Instead of continuing that duplication, I merged them into a single traceback.go. Tested on arm, amd64, amd64p32, and 386. LGTM=r R=golang-codereviews, remyoudompheng, dave, r CC=dvyukov, golang-codereviews, iant, khr https://golang.org/cl/134200044
2014-09-01runtime: convert mprof.goc to mprof.goRuss Cox
The exported Go definitions appearing in mprof.go are copied verbatim from debug.go. The unexported Go funcs and types are new. The C Bucket type used a union and was not a line-for-line translation. LGTM=remyoudompheng R=golang-codereviews, remyoudompheng CC=dvyukov, golang-codereviews, iant, khr, r https://golang.org/cl/137040043
2014-08-30runtime: translate env*.c to GoRuss Cox
In an earlier CL I wrote a separate Go-only version, but that broke Plan 9, because the Go-only version assumed a non-Plan 9 system. Translate the real ones instead. LGTM=r R=golang-codereviews, r CC=0intro, golang-codereviews, iant, khr https://golang.org/cl/140050044
2014-08-28runtime: convert runtime1.goc, noasm_arm.goc to GoRuss Cox
LGTM=dvyukov R=golang-codereviews, bradfitz, dvyukov CC=golang-codereviews, iant, khr https://golang.org/cl/135070043
2014-08-25runtime: restore scavenger constantsDmitriy Vyukov
Once and for all. Broken in cl/108640043. I've messed it before. To test scavenger-related changes one needs to alter the constants during final testing. And then it's very easy to submit with the altered constants. LGTM=rsc R=golang-codereviews CC=golang-codereviews, rsc https://golang.org/cl/136720044
2014-08-22runtime: add Go symtab implementationJosh Bleecher Snyder
LGTM=khr R=khr, dvyukov, dave CC=golang-codereviews, rsc https://golang.org/cl/124300044
2014-08-19runtime: convert Gosched to GoDmitriy Vyukov
LGTM=rlh, khr R=golang-codereviews, rlh, bradfitz, khr CC=golang-codereviews, rsc https://golang.org/cl/127490043
2014-07-30runtime: rewrite malloc in Go.Keith Randall
This change introduces gomallocgc, a Go clone of mallocgc. Only a few uses have been moved over, so there are still lots of uses from C. Many of these C uses will be moved over to Go (e.g. in slice.goc), but probably not all. What should remain of C's mallocgc is an open question. LGTM=rsc, dvyukov R=rsc, khr, dave, bradfitz, dvyukov CC=golang-codereviews https://golang.org/cl/108840046
2014-05-20runtime: revise the document of Version()Shenghou Ma
Fixes #7701. (again, differently) LGTM=rsc R=iant, rsc CC=golang-codereviews https://golang.org/cl/94560043
2014-04-16runtime: crash when func main calls Goexit and all other goroutines exitRuss Cox
This has typically crashed in the past, although usually with an 'all goroutines are asleep - deadlock!' message that shows no goroutines (because there aren't any). Previous discussion at: https://groups.google.com/d/msg/golang-nuts/uCT_7WxxopQ/BoSBlLFzUTkJ https://groups.google.com/d/msg/golang-dev/KUojayEr20I/u4fp_Ej5PdUJ http://golang.org/issue/7711 There is general agreement that runtime.Goexit terminates the main goroutine, so that main cannot return, so the program does not exit. The interpretation that all other goroutines exiting causes an exit(0) is relatively new and was not part of those discussions. That is what this CL changes. Thankfully, even though the exit(0) has been there for a while, some other accounting bugs made it very difficult to trigger, so it is reasonable to replace. In particular, see golang.org/issue/7711#c10 for an examination of the behavior across past releases. Fixes #7711. LGTM=iant, r R=golang-codereviews, iant, dvyukov, r CC=golang-codereviews https://golang.org/cl/88210044
2014-03-25runtime: redo stack map entries to avoid false retentionKeith Randall
Change two-bit stack map entries to encode: 0 = dead 1 = scalar 2 = pointer 3 = multiword If multiword, the two-bit entry for the following word encodes: 0 = string 1 = slice 2 = iface 3 = eface That way, during stack scanning we can check if a string is zero length or a slice has zero capacity. We can avoid following the contained pointer in those cases. It is safe to do so because it can never be dereferenced, and it is desirable to do so because it may cause false retention of the following block in memory. Slice feature turned off until issue 7564 is fixed. Update #7549 LGTM=rsc R=golang-codereviews, bradfitz, rsc CC=golang-codereviews https://golang.org/cl/76380043
2013-12-17runtime: don't crash in SetFinalizer if sizeof *x is zeroBrad Fitzpatrick
And document it explicitly, even though it already said it wasn't guaranteed. Fixes #6857 R=golang-dev, khr CC=golang-dev https://golang.org/cl/43580043
2013-12-06runtime: add GODEBUG option for an electric fence like heap modeCarl Shapiro
When enabled this new debugging mode will allocate objects on their own page and never recycle memory addresses. This is an essential tool to root cause a broad class of heap corruption. R=golang-dev, dave, daniel.morsing, dvyukov, rsc, iant, cshapiro CC=golang-dev https://golang.org/cl/22060046
2013-12-03runtime: add an allocation and free tracing for gc debuggingCarl Shapiro
Output for an allocation and free (sweep) follows MProf_Malloc(p=0xc2100210a0, size=0x50, type=0x0 <single object>) #0 0x46ee15 runtime.mallocgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:141 #1 0x47004f runtime.settype_flush /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:612 #2 0x45f92c gc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2071 #3 0x45f89e mgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2050 #4 0x45258b runtime.mcall /usr/local/google/home/cshapiro/go/src/pkg/runtime/asm_amd64.s:179 MProf_Free(p=0xc2100210a0, size=0x50) #0 0x46ee15 runtime.mallocgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:141 #1 0x47004f runtime.settype_flush /usr/local/google/home/cshapiro/go/src/pkg/runtime/malloc.goc:612 #2 0x45f92c gc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2071 #3 0x45f89e mgc /usr/local/google/home/cshapiro/go/src/pkg/runtime/mgc0.c:2050 #4 0x45258b runtime.mcall /usr/local/google/home/cshapiro/go/src/pkg/runtime/asm_amd64.s:179 R=golang-dev, dvyukov, rsc, cshapiro CC=golang-dev https://golang.org/cl/21990045
2013-08-14runtime: make SetFinalizer(x, f) accept any f for which f(x) is validRuss Cox
Originally the requirement was f(x) where f's argument is exactly x's type. CL 11858043 relaxed the requirement in a non-standard way: f's argument must be exactly x's type or interface{}. If we're going to relax the requirement, it should be done in a way consistent with the rest of Go. This CL allows f's argument to have any type for which x is assignable; that's the same requirement the compiler would impose if compiling f(x) directly. Fixes #5368. R=dvyukov, bradfitz, pieter CC=golang-dev https://golang.org/cl/12895043
2013-08-14runtime: dump scheduler state if GODEBUG=schedtrace is setDmitriy Vyukov
The schedtrace value sets dump period in milliseconds. In default mode the trace looks as follows: SCHED 0ms: gomaxprocs=4 idleprocs=0 threads=3 idlethreads=0 runqueue=0 [1 0 0 0] SCHED 1001ms: gomaxprocs=4 idleprocs=3 threads=6 idlethreads=3 runqueue=0 [0 0 0 0] SCHED 2008ms: gomaxprocs=4 idleprocs=1 threads=6 idlethreads=1 runqueue=0 [0 1 0 0] If GODEBUG=scheddetail=1 is set as well, then the detailed trace is printed: SCHED 0ms: gomaxprocs=4 idleprocs=0 threads=3 idlethreads=0 runqueue=0 singleproc=0 gcwaiting=1 mlocked=0 nmspinning=0 stopwait=0 sysmonwait=0 P0: status=3 tick=1 m=0 runqsize=1/128 gfreecnt=0 P1: status=3 tick=0 m=-1 runqsize=0/128 gfreecnt=0 P2: status=3 tick=0 m=-1 runqsize=0/128 gfreecnt=0 P3: status=3 tick=0 m=-1 runqsize=0/128 gfreecnt=0 M2: p=-1 curg=-1 mallocing=0 throwing=0 gcing=0 locks=1 dying=0 helpgc=0 spinning=0 lockedg=-1 M1: p=-1 curg=-1 mallocing=0 throwing=0 gcing=0 locks=1 dying=0 helpgc=0 spinning=0 lockedg=-1 M0: p=0 curg=1 mallocing=0 throwing=0 gcing=0 locks=1 dying=0 helpgc=0 spinning=0 lockedg=1 G1: status=2() m=0 lockedm=0 G2: status=1() m=-1 lockedm=-1 R=golang-dev, raggi, rsc CC=golang-dev https://golang.org/cl/11435044
2013-07-29runtime: allow SetFinalizer with a func(interface{})Pieter Droogendijk
Fixes #5368. R=golang-dev, dvyukov CC=golang-dev, rsc https://golang.org/cl/11858043
2013-07-16cmd/ld, runtime: new in-memory symbol table formatRuss Cox
Design at http://golang.org/s/go12symtab. This enables some cleanup of the garbage collector metadata that will be done in future CLs. This CL does not move the old symtab and pclntab back into an unmapped section of the file. That's a bit tricky and will be done separately. Fixes #4020. R=golang-dev, dave, cshapiro, iant, r CC=golang-dev, nigeltao https://golang.org/cl/11085043
2013-06-28runtime: introduce GODEBUG env varDmitriy Vyukov
Currently it replaces GOGCTRACE env var (GODEBUG=gctrace=1). The plan is to extend it with other type of debug tracing, e.g. GODEBUG=gctrace=1,schedtrace=100. R=rsc CC=bradfitz, daniel.morsing, gobot, golang-dev https://golang.org/cl/10026045
2013-06-06runtime: remove unused mid functionIan Lance Taylor
R=golang-dev, r CC=golang-dev https://golang.org/cl/10036047
2013-05-28cmd/5l, cmd/6l, cmd/8l, cmd/gc, runtime: generate and use bitmaps of ↵Carl Shapiro
argument pointer locations With this change the compiler emits a bitmap for each function covering its stack frame arguments area. If an argument word is known to contain a pointer, a bit is set. The garbage collector reads this information when scanning the stack by frames and uses it to ignores locations known to not contain a pointer. R=golang-dev, bradfitz, daniel.morsing, dvyukov, khr, khr, iant, cshapiro CC=golang-dev https://golang.org/cl/9223046
2013-03-15runtime: accept GOTRACEBACK=crash to mean 'crash after panic'Russ Cox
This provides a way to generate core dumps when people need them. The settings are: GOTRACEBACK=0 no traceback on panic, just exit GOTRACEBACK=1 default - traceback on panic, then exit GOTRACEBACK=2 traceback including runtime frames on panic, then exit GOTRACEBACK=crash traceback including runtime frames on panic, then crash Fixes #3257. R=golang-dev, devon.odell, r, daniel.morsing, ality CC=golang-dev https://golang.org/cl/7666044
2013-02-21cmd/5g, cmd/5l, cmd/6l, cmd/8l, cmd/gc, cmd/ld, runtime: accurate args and ↵Carl Shapiro
locals information Previously, the func structure contained an inaccurate value for the args member and a 0 value for the locals member. This change populates the func structure with args and locals values computed by the compiler. The number of args was already available in the ATEXT instruction. The number of locals is now passed through in the new ALOCALS instruction. This change also switches the unit of args and locals to be bytes, just like the frame member, instead of 32-bit words. R=golang-dev, bradfitz, cshapiro, dave, rsc CC=golang-dev https://golang.org/cl/7399045
2012-11-26runtime: re-format comments.Oling Cat
add necessary newlines. R=golang-dev, rsc CC=golang-dev https://golang.org/cl/6847067
2012-05-24runtime: fix docs for Caller and CallersRob Pike
The previous attempt to explain this got it backwards (all the more reason to be sad we couldn't make the two functions behave the same). Fixes #3669. R=golang-dev, rsc CC=golang-dev https://golang.org/cl/6249051
2012-04-10runtime.Callers: make documentation match codeRob Pike
It is a bug that Caller and Callers disagree about the offset of the skip parameter. Document the bug. R=rsc, dsymonds, r, iant CC=golang-dev https://golang.org/cl/5976064
2012-02-19runtime: APIRuss Cox
Delete Alloc, Free, Lookup, Semacquire, Semrelease Fixes #2955. R=golang-dev, r, bradfitz CC=golang-dev https://golang.org/cl/5675093
2012-02-17runtime: rename Cgocalls and Goroutines to NumCgoCall and NumGoroutine, ↵David Symonds
respectively. Update some other docs too. Update #2955. R=rsc CC=golang-dev https://golang.org/cl/5676060
2012-01-25runtime: move NumCPU declaration into debug.go.David Symonds
R=rsc CC=golang-dev https://golang.org/cl/5574060
2012-01-16runtime: fix typo in commentMaxim Pimenov
R=golang-dev, dvyukov CC=golang-dev https://golang.org/cl/5540059
2012-01-12effective_go: provide reference to runtime.NumCPU()Dmitriy Vyukov
R=golang-dev, robert.hencke, r CC=golang-dev https://golang.org/cl/5538050
2012-01-11runtime: delete duplicate implementation of pcln walkerRuss Cox
It's hard enough to get right once. R=golang-dev, r CC=golang-dev https://golang.org/cl/5533073
2012-01-09runtime: add NumCPURuss Cox
R=golang-dev, bradfitz CC=golang-dev https://golang.org/cl/5528061
2012-01-04runtime: fix typo in commentRobert Griesemer
R=golang-dev, dsymonds CC=golang-dev https://golang.org/cl/5511047
2011-10-06runtime: faster finalizersDmitriy Vyukov
Linux/amd64, 2 x Intel Xeon E5620, 8 HT cores, 2.40GHz benchmark old ns/op new ns/op delta BenchmarkFinalizer 420.00 261.00 -37.86% BenchmarkFinalizer-2 985.00 201.00 -79.59% BenchmarkFinalizer-4 1077.00 244.00 -77.34% BenchmarkFinalizer-8 1155.00 180.00 -84.42% BenchmarkFinalizer-16 1182.00 184.00 -84.43% BenchmarkFinalizerRun 2128.00 1378.00 -35.24% BenchmarkFinalizerRun-2 1655.00 1418.00 -14.32% BenchmarkFinalizerRun-4 1634.00 1522.00 -6.85% BenchmarkFinalizerRun-8 2213.00 1581.00 -28.56% BenchmarkFinalizerRun-16 2424.00 1599.00 -34.03% Darwin/amd64, Intel L9600, 2 cores, 2.13GHz benchmark old ns/op new ns/op delta BenchmarkChanCreation 1451.00 926.00 -36.18% BenchmarkChanCreation-2 3124.00 1412.00 -54.80% BenchmarkChanCreation-4 6121.00 2628.00 -57.07% BenchmarkFinalizer 684.00 420.00 -38.60% BenchmarkFinalizer-2 11195.00 398.00 -96.44% BenchmarkFinalizer-4 15862.00 654.00 -95.88% BenchmarkFinalizerRun 2025.00 1397.00 -31.01% BenchmarkFinalizerRun-2 3920.00 1447.00 -63.09% BenchmarkFinalizerRun-4 9471.00 1545.00 -83.69% R=golang-dev, cw, rsc CC=golang-dev https://golang.org/cl/4963057
2011-04-20src/pkg: make package doc comments consistently start with "Package foo".Nigel Tao
R=rsc CC=golang-dev https://golang.org/cl/4442064
2011-02-02runtime: more detailed panic traces, line number workRuss Cox
Follow morestack, so that crashes during a stack split give complete traces. Also mark stack segment boundaries as an aid to debugging. Correct various line number bugs with yet another attempt at interpreting the pc/ln table. This one has a chance at being correct, because I based it on reading src/cmd/ld/lib.c instead of on reading the documentation. Fixes #1138. Fixes #1430. Fixes #1461. throw: runtime: split stack overflow runtime.throw+0x3e /home/rsc/g/go2/src/pkg/runtime/runtime.c:78 runtime.throw(0x81880af, 0xf75c8b18) runtime.newstack+0xad /home/rsc/g/go2/src/pkg/runtime/proc.c:728 runtime.newstack() runtime.morestack+0x4f /home/rsc/g/go2/src/pkg/runtime/386/asm.s:184 runtime.morestack() ----- morestack called from stack: ----- runtime.new+0x1a /home/rsc/g/go2/src/pkg/runtime/malloc.c:288 runtime.new(0x1, 0x0, 0x0) gongo.makeBoard+0x33 /tmp/Gongo/gongo_robot_test.go:344 gongo.makeBoard(0x809d238, 0x1, 0xf76092c8, 0x1) ----- stack segment boundary ----- gongo.checkEasyScore+0xcc /tmp/Gongo/gongo_robot_test.go:287 gongo.checkEasyScore(0xf764b710, 0x0, 0x809d238, 0x1) gongo.TestEasyScore+0x8c /tmp/Gongo/gongo_robot_test.go:255 gongo.TestEasyScore(0xf764b710, 0x818a990) testing.tRunner+0x2f /home/rsc/g/go2/src/pkg/testing/testing.go:132 testing.tRunner(0xf764b710, 0xf763b5dc, 0x0) runtime.goexit /home/rsc/g/go2/src/pkg/runtime/proc.c:149 runtime.goexit() R=ken2, r CC=golang-dev https://golang.org/cl/4000053
2011-01-31runtime: generate Go defs for C types.Luuk van Dijk
R=rsc, mattn CC=golang-dev https://golang.org/cl/4047047
2010-11-30runtime: parallel definitions in Go for all C structs.Luuk van Dijk
R=rsc CC=golang-dev https://golang.org/cl/3308041
2010-10-13runtime: remove done TODO from SetFinalizerAndrew Gerrand
R=rsc CC=golang-dev https://golang.org/cl/2472041
2010-09-02runtime: add GOOS, GOARCH; fix FuncLineRuss Cox
Changes to FuncLine sync it with symtab.c's funcline. R=r CC=girard.m1, golang-dev https://golang.org/cl/2083041
2010-07-24runtime/extern.go: clear a small error in a comment.Vinu Rajashekhar
R=iant, rsc CC=golang-dev https://golang.org/cl/1741058
2010-07-15Clarify that a new goroutine is not started for each finalizer.Ian Lance Taylor
R=rsc CC=golang-dev https://golang.org/cl/1698051
2010-06-21runtime: split extern.go into debug.go, extern.go, sig.go.Russ Cox
move mal next to the other malloc functions. R=r CC=golang-dev https://golang.org/cl/1701045
2010-05-06runtime.GOMAXPROCS: hack it to have it return the old value.Rob Pike
R=rsc CC=golang-dev https://golang.org/cl/1140041
2010-03-29runtime: run deferred calls at GoexitRuss Cox
baby step toward panic+recover. Fixes #349. R=r CC=golang-dev https://golang.org/cl/825043
2010-03-29runtime: a couple more memory stats.Russ Cox
now runtime.MemStats.Sys really is the sum of all the other Sys fields. R=r CC=golang-dev https://golang.org/cl/843041
generated by cgit v1.3 (git 2.53.0) at 2026-04-16 08:21:50 +0000