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path: root/src/pkg/runtime/amd64/traceback.c
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2011-12-16runtime: make more build-friendlyRuss Cox
Collapse the arch,os-specific directories into the main directory by renaming xxx/foo.c to foo_xxx.c, and so on. There are no substantial edits here, except to the Makefile. The assumption is that the Go tool will #define GOOS_darwin and GOARCH_amd64 and will make any file named something like signals_darwin.h available as signals_GOOS.h during the build. This replaces what used to be done with -I$(GOOS). There is still work to be done to make runtime build with standard tools, but this is a big step. After this we will have to write a script to generate all the generated files so they can be checked in (instead of generated during the build). R=r, iant, r, lucio.dere CC=golang-dev https://golang.org/cl/5490053
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
2011-08-29runtime: add runtime· prefix to showframeRuss Cox
R=ken2 CC=golang-dev https://golang.org/cl/4978042
2011-08-22runtime: simplify stack tracesRuss Cox
Make the stack traces more readable for new Go programmers while preserving their utility for old hands. - Change status number [4] to string. - Elide frames in runtime package (internal details). - Swap file:line and arguments. - Drop 'created by' for main goroutine. - Show goroutines in order of allocation: implies main goroutine first if nothing else. There is no option to get the extra frames back. Uncomment 'return 1' at the bottom of symtab.c. $ 6.out throw: all goroutines are asleep - deadlock! goroutine 1 [chan send]: main.main() /Users/rsc/g/go/src/pkg/runtime/x.go:22 +0x8a goroutine 2 [select (no cases)]: main.sel() /Users/rsc/g/go/src/pkg/runtime/x.go:11 +0x18 created by main.main /Users/rsc/g/go/src/pkg/runtime/x.go:19 +0x23 goroutine 3 [chan receive]: main.recv(0xf8400010a0, 0x0) /Users/rsc/g/go/src/pkg/runtime/x.go:15 +0x2e created by main.main /Users/rsc/g/go/src/pkg/runtime/x.go:20 +0x50 goroutine 4 [chan receive (nil chan)]: main.recv(0x0, 0x0) /Users/rsc/g/go/src/pkg/runtime/x.go:15 +0x2e created by main.main /Users/rsc/g/go/src/pkg/runtime/x.go:21 +0x66 $ $ 6.out index panic: runtime error: index out of range goroutine 1 [running]: main.main() /Users/rsc/g/go/src/pkg/runtime/x.go:25 +0xb9 $ $ 6.out nil panic: runtime error: invalid memory address or nil pointer dereference [signal 0xb code=0x1 addr=0x0 pc=0x22ca] goroutine 1 [running]: main.main() /Users/rsc/g/go/src/pkg/runtime/x.go:28 +0x211 $ $ 6.out panic panic: panic goroutine 1 [running]: main.main() /Users/rsc/g/go/src/pkg/runtime/x.go:30 +0x101 $ R=golang-dev, qyzhai, n13m3y3r, r CC=golang-dev https://golang.org/cl/4907048
2011-07-26gc, runtime: fix range+panic line number bugsRuss Cox
Fixes #1856. R=ken2 CC=golang-dev https://golang.org/cl/4810054
2011-03-23runtime: cpu profiling supportRuss Cox
R=r CC=golang-dev https://golang.org/cl/4306043
2011-03-02runtime: record goroutine creation pc and display in tracebackRuss Cox
package main func main() { go func() { *(*int)(nil) = 0 }() select{} } panic: runtime error: invalid memory address or nil pointer dereference [signal 0xb code=0x1 addr=0x0 pc=0x1c96] runtime.panic+0xac /Users/rsc/g/go/src/pkg/runtime/proc.c:1083 runtime.panic(0x11bf0, 0xf8400011f0) runtime.panicstring+0xa3 /Users/rsc/g/go/src/pkg/runtime/runtime.c:116 runtime.panicstring(0x29a57, 0x0) runtime.sigpanic+0x144 /Users/rsc/g/go/src/pkg/runtime/darwin/thread.c:470 runtime.sigpanic() main._func_001+0x16 /Users/rsc/g/go/src/pkg/runtime/x.go:188 main._func_001() runtime.goexit /Users/rsc/g/go/src/pkg/runtime/proc.c:150 runtime.goexit() ----- goroutine created by ----- main.main+0x3d /Users/rsc/g/go/src/pkg/runtime/x.go:4 goroutine 1 [4]: runtime.gosched+0x77 /Users/rsc/g/go/src/pkg/runtime/proc.c:598 runtime.gosched() runtime.block+0x27 /Users/rsc/g/go/src/pkg/runtime/chan.c:680 runtime.block() main.main+0x44 /Users/rsc/g/go/src/pkg/runtime/x.go:5 main.main() runtime.mainstart+0xf /Users/rsc/g/go/src/pkg/runtime/amd64/asm.s:77 runtime.mainstart() runtime.goexit /Users/rsc/g/go/src/pkg/runtime/proc.c:150 runtime.goexit() ----- goroutine created by ----- _rt0_amd64+0x8e /Users/rsc/g/go/src/pkg/runtime/amd64/asm.s:64 Fixes #1563. R=r CC=golang-dev https://golang.org/cl/4243046
2011-02-23runtime: traceback through active lessstackRuss Cox
With this change, a panic trace due to a signal arriving while running on the scheduler stack during a lessstack (a stack unsplit) will trace through the lessstack to show the state of the goroutine that was unsplitting its stack. R=r CC=golang-dev https://golang.org/cl/4206042
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
2011-01-28runtime: simpler heap map, memory allocationRuss Cox
The old heap maps used a multilevel table, but that was overkill: there are only 1M entries on a 32-bit machine and we can arrange to use a dense address range on a 64-bit machine. The heap map is in bss. The assumption is that if we don't touch the pages they won't be mapped in. Also moved some duplicated memory allocation code out of the OS-specific files. R=r CC=golang-dev https://golang.org/cl/4118042
2010-11-04runtime: ,s/[a-zA-Z0-9_]+/runtime·&/g, almostRuss Cox
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
2010-10-07runtime: fix argument dump in tracebackRuss Cox
Was printing words at SP instead of at FP after shuffle due to nascent flag. R=r, r2 CC=golang-dev https://golang.org/cl/2316044
2010-09-09runtime: fix bug in tracebacksRob Pike
Need to correct for deferproc's extra 2 words of stack or in some cases (such as memory profiling) traceback can cause a crash. Also bulletproof the closure test. R=rsc CC=golang-dev https://golang.org/cl/2138047
2010-05-21runtime: correct tracebacks for nascent goroutines, even closuresRuss Cox
Fixes #780. R=r CC=golang-dev https://golang.org/cl/1221042
2010-04-05runtime: various arm fixesRuss Cox
* correct symbol table size * do not reorder functions in output * traceback * signal handling * use same code for go + defer * handle leaf functions in symbol table R=kaib, dpx CC=golang-dev https://golang.org/cl/884041
2010-03-23runtime: add CallersRuss Cox
cut copies of traceback from 6 to 1. R=r CC=golang-dev https://golang.org/cl/703041
2010-01-25in C and asm, replace pkg·name with ·nameRuss Cox
(eliminate assumption of package global name space, make code easier to move between packages). R=r CC=golang-dev https://golang.org/cl/194072
2009-11-15runtime: avoid crash in CallerRuss Cox
Fixes #176. R=r https://golang.org/cl/154146
2009-10-15rename sys functions to runtime,Russ Cox
because they are in package runtime. another step to enforcing package boundaries. R=r DELTA=732 (114 added, 93 deleted, 525 changed) OCL=35811 CL=35824
2009-08-31use correct pc for printing fn+%#x in tracebacksRuss Cox
R=austin DELTA=12 (2 added, 0 deleted, 10 changed) OCL=34098 CL=34120
2009-08-14Account for CALL instructions before looking up the functionAustin Clements
at PC, to deal with functions that end with a CALL instruction. Special case known call-by-return functions. R=rsc APPROVED=rsc DELTA=12 (6 added, 6 deleted, 0 changed) OCL=33255 CL=33279
2009-08-13Don't try to account for CALL instruction in 0th frame.Austin Clements
R=rsc APPROVED=rsc DELTA=9 (4 added, 3 deleted, 2 changed) OCL=33238 CL=33251
2009-07-27fix gc bug causing make smoketest to die in cmd/gofmt.Russ Cox
saving of sp was too far away from use in scanstack; the stack had changed since the sp was saved. R=r DELTA=9 (4 added, 2 deleted, 3 changed) OCL=32232 CL=32237
2009-06-17runtime: stack growth adjustments, cleanupRuss Cox
* keep coherent SP/PC in gobuf (i.e., SP that would be in use at that PC) * gogocall replaces setspgoto, should work better in presence of link registers * delete unused system calls only amd64; 386 is now broken R=r DELTA=548 (183 added, 183 deleted, 182 changed) OCL=30381 CL=30442
2009-06-09mv src/lib to src/pkgRob Pike
tests: all.bash passes, gobuild still works, godoc still works. R=rsc OCL=30096 CL=30102
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