Fork of Go programming language with my patches. http://git.kilabit.info/go/atom?h=main 2014-09-08T04:08:51Z 2014-09-08T04:08:51Z Russ Cox rsc@golang.org 2014-09-08T04:08:51Z urn:sha1:c007ce824d9a4fccb148f9204e04c23ed2984b71 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. 2014-09-06T17:19:08Z Russ Cox rsc@golang.org 2014-09-06T17:19:08Z urn:sha1:8473695797d346f9adf72ee40013a8c8421a7c87 The gp->panicwrap adjustment is just fatally flawed. Now that there is a Panic.argp field, update that instead. That can be done on entry only, so that unwinding doesn't need to worry about undoing anything. The wrappers emit a few more instructions in the prologue but everything else in the system gets much simpler. It also fixes (without trying) a broken test I never checked in. Fixes #7491. LGTM=khr R=khr CC=dvyukov, golang-codereviews, iant, r https://golang.org/cl/135490044 2014-09-05T21:00:32Z Russ Cox rsc@golang.org 2014-09-05T21:00:32Z urn:sha1:277ef8fa07411231761426298c8e489ddef8ef67 I forgot to clear this before submitting. TBR=khr CC=golang-codereviews https://golang.org/cl/132640044 2014-09-05T20:51:45Z Russ Cox rsc@golang.org 2014-09-05T20:51:45Z urn:sha1:f8f630f5ecb5e30c9feadab5277f393c58da71f6 newstackcall creates a new stack segment, and we want to be able to throw away all that code. LGTM=khr R=khr, iant CC=dvyukov, golang-codereviews, r https://golang.org/cl/139270043 2014-09-05T14:04:16Z Keith Randall khr@golang.org 2014-09-05T14:04:16Z urn:sha1:8217b4a203daaa7f24590f9369c77b758dad1cd6 created panic1.go just so diffs were available. After this CL is in, I'd like to move panic.go -> defer.go and panic1.go -> panic.go. LGTM=rsc R=rsc, khr CC=golang-codereviews https://golang.org/cl/133530045 2014-09-05T03:05:18Z Russ Cox rsc@golang.org 2014-09-05T03:05:18Z urn:sha1:cb040d59b945437cdca8c8cff525ebbb7261a217 I did this just to clean things up, but it will be important when we drop the pkg directory later. LGTM=bradfitz R=r, bradfitz CC=golang-codereviews https://golang.org/cl/132600043 2014-09-03T21:42:35Z Russ Cox rsc@golang.org 2014-09-03T21:42:35Z urn:sha1:5ea69978fd07abdd4bb5ed63dfb38700389493c6 It is fundamentally unsafe to grow the stack once someone has made a call to syscall.Syscall. That function takes 6 uintptr arguments, but depending on the call some are pointers. In fact, some might be pointers to stack values, and we don't know which. That makes it impossible to copy the stack somewhere else. Since we want to delete all the stack splitting code, relying only on stack copying, make sure that Syscall never needs to split the stack. The only thing Syscall does is: call entersyscall make the system call call exitsyscall As long as we make sure that entersyscall and exitsyscall can live in the nosplit region, they won't ask for more stack. Do this by making entersyscall and exitsyscall set up the stack guard so that any call to a function with a split check will cause a crash. Then move non-essential slow-path work onto the m stack using onM and mark the rest of the work nosplit. The linker will verify that the chain of nosplits fits in the total nosplit budget. LGTM=iant R=golang-codereviews, iant CC=dvyukov, golang-codereviews, khr, r https://golang.org/cl/140950043 2014-09-03T16:06:36Z Rick Hudson rlh@golang.org 2014-09-03T16:06:36Z urn:sha1:56bd176e1d5f0145936128c0dc1f931cc5a84c0b Code to bring goroutines to a gc safepoint one at a time, do some work such as scanning, and restart the goroutine, and then move on to the next goroutine. Currently this code does not do much useful work but this infrastructure will be critical to future concurrent GC work. Fixed comments reviewers. LGTM=rsc R=golang-codereviews, rsc, dvyukov CC=golang-codereviews https://golang.org/cl/131580043 2014-09-02T21:13:29Z Keith Randall khr@golang.org 2014-09-02T21:13:29Z urn:sha1:1d8fa7fa5db01cde6e764af29d4c2fb80bad9d8c LGTM=rsc R=golang-codereviews, bradfitz, iant, khr, rsc CC=golang-codereviews https://golang.org/cl/139020043 2014-09-02T19:12:53Z Russ Cox rsc@golang.org 2014-09-02T19:12:53Z urn:sha1:fa2af441f1d7f2daccf40e1e350e8a8bfdcfb9e8 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