Fork of Go programming language with my patches. http://git.kilabit.info/go/atom?h=main 2013-03-14T18:35:13Z 2013-03-14T18:35:13Z Russ Cox rsc@golang.org 2013-03-14T18:35:13Z urn:sha1:e9d62a6d81ee380acda593edec0d3a05295254ec thread_GOOS.c becomes os_GOOS.c. signal_GOOS_GOARCH.c becomes os_GOOS_GOARCH.c, but with non-GOARCH-specific code moved into os_GOOS.c. The actual arch-specific signal handler moves into signal_GOARCH.c to avoid per-GOOS duplication. New files signal_GOOS_GOARCH.h provide macros for accessing fields of the very system-specific signal info structs. Lots moving, but nothing changing. This is a preliminarly cleanup so I can work on the signal handling code to fix some open issues without having to make each change 13 times. Tested on Linux and OS X, 386 and amd64. Will fix Plan 9, Windows, and ARM after the fact if necessary. (Plan 9 and Windows should be fine; ARM will probably have some typos.) Net effect: -1081 lines of code. R=golang-dev, r CC=golang-dev https://golang.org/cl/7565048 2013-03-14T15:06:35Z Dmitriy Vyukov dvyukov@google.com 2013-03-14T15:06:35Z urn:sha1:49e0300854dabc8d3c2e91d26897a998345f2447 vs tip: BenchmarkTCP4OneShot 172994 40485 -76.60% BenchmarkTCP4OneShot-2 96581 30028 -68.91% BenchmarkTCP4OneShot-4 52615 18454 -64.93% BenchmarkTCP4OneShot-8 26351 12289 -53.36% BenchmarkTCP4OneShot-16 12258 16093 +31.29% BenchmarkTCP4OneShot-32 13200 17045 +29.13% BenchmarkTCP4OneShotTimeout 124814 42932 -65.60% BenchmarkTCP4OneShotTimeout-2 99090 29040 -70.69% BenchmarkTCP4OneShotTimeout-4 51860 18455 -64.41% BenchmarkTCP4OneShotTimeout-8 26100 12073 -53.74% BenchmarkTCP4OneShotTimeout-16 12198 16654 +36.53% BenchmarkTCP4OneShotTimeout-32 13438 17143 +27.57% BenchmarkTCP4Persistent 115647 7782 -93.27% BenchmarkTCP4Persistent-2 58024 4808 -91.71% BenchmarkTCP4Persistent-4 24715 3674 -85.13% BenchmarkTCP4Persistent-8 16431 2407 -85.35% BenchmarkTCP4Persistent-16 2336 1875 -19.73% BenchmarkTCP4Persistent-32 1689 1637 -3.08% BenchmarkTCP4PersistentTimeout 79754 7859 -90.15% BenchmarkTCP4PersistentTimeout-2 57708 5952 -89.69% BenchmarkTCP4PersistentTimeout-4 26907 3823 -85.79% BenchmarkTCP4PersistentTimeout-8 15036 2567 -82.93% BenchmarkTCP4PersistentTimeout-16 2507 1903 -24.09% BenchmarkTCP4PersistentTimeout-32 1717 1627 -5.24% vs old scheduler: benchmark old ns/op new ns/op delta BenchmarkTCPOneShot 192244 40485 -78.94% BenchmarkTCPOneShot-2 63835 30028 -52.96% BenchmarkTCPOneShot-4 35443 18454 -47.93% BenchmarkTCPOneShot-8 22140 12289 -44.49% BenchmarkTCPOneShot-16 16930 16093 -4.94% BenchmarkTCPOneShot-32 16719 17045 +1.95% BenchmarkTCPOneShotTimeout 190495 42932 -77.46% BenchmarkTCPOneShotTimeout-2 64828 29040 -55.20% BenchmarkTCPOneShotTimeout-4 34591 18455 -46.65% BenchmarkTCPOneShotTimeout-8 21989 12073 -45.10% BenchmarkTCPOneShotTimeout-16 16848 16654 -1.15% BenchmarkTCPOneShotTimeout-32 16796 17143 +2.07% BenchmarkTCPPersistent 81670 7782 -90.47% BenchmarkTCPPersistent-2 26598 4808 -81.92% BenchmarkTCPPersistent-4 15633 3674 -76.50% BenchmarkTCPPersistent-8 18093 2407 -86.70% BenchmarkTCPPersistent-16 17472 1875 -89.27% BenchmarkTCPPersistent-32 7679 1637 -78.68% BenchmarkTCPPersistentTimeout 83186 7859 -90.55% BenchmarkTCPPersistentTimeout-2 26883 5952 -77.86% BenchmarkTCPPersistentTimeout-4 15776 3823 -75.77% BenchmarkTCPPersistentTimeout-8 18180 2567 -85.88% BenchmarkTCPPersistentTimeout-16 17454 1903 -89.10% BenchmarkTCPPersistentTimeout-32 7798 1627 -79.14% R=golang-dev, iant, bradfitz, dave, rsc CC=golang-dev https://golang.org/cl/7579044 2013-03-12T17:47:44Z Keith Randall khr@golang.org 2013-03-12T17:47:44Z urn:sha1:a5d4024139231ca10b5347d17bbf702cfdf5fd5b Uses AES hardware instructions on 386/amd64 to implement a fast hash function. Incorporates a random key to thwart hash collision DOS attacks. Depends on CL#7548043 for new assembly instructions. Update #3885 Helps some by making hashing faster. Go time drops from 0.65s to 0.51s. R=rsc, r, bradfitz, remyoudompheng, khr, dsymonds, minux.ma, elias.naur CC=golang-dev https://golang.org/cl/7543043 2013-03-01T16:44:43Z Russ Cox rsc@golang.org 2013-03-01T16:44:43Z urn:sha1:e6a3e22c7569f7581f9a3dea3229ff6d0eda15e8 Putting the M initialization in multiple places will not scale. Various code assumes mstart is the start already. Make it so. R=golang-dev, devon.odell CC=golang-dev https://golang.org/cl/7420048 2013-03-01T13:30:11Z Russ Cox rsc@golang.org 2013-03-01T13:30:11Z urn:sha1:c5f694a5c9d210b83b82f52931e1d46b3e25393d R=devon.odell CC=golang-dev https://golang.org/cl/7443046 2013-02-21T12:24:38Z Dmitriy Vyukov dvyukov@google.com 2013-02-21T12:24:38Z urn:sha1:a0955a2aa2a2fcd5352f7e517c3f965e24fd8584 mpreinit() is called on the parent thread and with mcache (can allocate memory), minit() is called on the child thread and can not allocate memory. R=golang-dev, rsc CC=golang-dev https://golang.org/cl/7389043 2013-02-20T22:48:23Z Russ Cox rsc@golang.org 2013-02-20T22:48:23Z urn:sha1:6c976393aea607e67f4d31e3a2ae7b3c0dc15ade Fixes #4435. R=golang-dev, iant, alex.brainman, minux.ma, dvyukov CC=golang-dev https://golang.org/cl/7304104 2013-02-18T18:43:12Z Russ Cox rsc@golang.org 2013-02-18T18:43:12Z urn:sha1:86d509b463d92be4ea9f51d61760d8383b1f96e4 * Handle p==nil in signalstack by setting SS_DISABLE flag. * Make minit only allocate a signal g if there's not one already. R=golang-dev, r CC=golang-dev https://golang.org/cl/7323072 2013-02-15T17:18:33Z Russ Cox rsc@golang.org 2013-02-15T17:18:33Z urn:sha1:c7f7bbbf03415e1805e503846627f2e08423c360 In addition to the compile failure fixed in signal*.c, preserving the signal mask led to very strange crashes. Testing shows that looking for SIG_IGN is all that matters to get along with nohup, so reintroduce sigset_zero instead of trying to preserve the signal mask. TBR=iant CC=golang-dev https://golang.org/cl/7323067 2013-02-15T16:18:55Z Russ Cox rsc@golang.org 2013-02-15T16:18:55Z urn:sha1:f3407f445d51dac3b9415cb5025ac98ccbbc80eb There are two ways nohup(1) might be implemented: it might mask away the signal, or it might set the handler to SIG_IGN, both of which are inherited across fork+exec. So two fixes: * Make sure to preserve the inherited signal mask at minit instead of clearing it. * If the SIGHUP handler is SIG_IGN, leave it that way. Fixes #4491. R=golang-dev, mikioh.mikioh, iant CC=golang-dev https://golang.org/cl/7308102