R=rsc
CC=golang-dev
https://golang.org/cl/836043

R=rsc, gri, iant
CC=golang-dev
https://golang.org/cl/821044

R=rsc
CC=golang-dev
https://golang.org/cl/844041

main semantic change is to enforce single argument to panic.

runtime: change to 1-argument panic.
use String method on argument if it has one.

R=ken2, r
CC=golang-dev
https://golang.org/cl/812043

R=r
CC=golang-dev
https://golang.org/cl/833044

otherwise "make install" runs cp unconditionally

R=r
CC=golang-dev
https://golang.org/cl/802044

R=r
CC=golang-dev
https://golang.org/cl/849041

note that sortmain.go has been run through hg gofmt;
only the formatting of the day initializers changed.
i'm happy to revert that formatting if you'd prefer.

stop on error in doc/progs/run

R=r
CC=golang-dev
https://golang.org/cl/850041

R=ken2
CC=golang-dev
https://golang.org/cl/811042

Also minor reformatting.

R=rsc
CC=golang-dev
https://golang.org/cl/845041

baby step toward panic+recover.

Fixes #349.

R=r
CC=golang-dev
https://golang.org/cl/825043

R=rsc
CC=golang-dev
https://golang.org/cl/826042

+ various minor cleanups

Usage: godoc -src math Sin

R=rsc
CC=golang-dev
https://golang.org/cl/791041

the set() method and add() functions.  But we rename add() to Var() for consistency.
Also rename FlagValue to Value for simplicity.

Also, delete the check for multiple settings for a flag.  This makes it possible to
define a flag that collects values, such as into a slice of strings.

type flagVar []string

func (f *flagVar) String() string {
	return fmt.Sprint(v)
}

func (f *flagVar) Set(value string) bool {
	if v == nil {
		v = make(flagVar, 1)
	} else {
		nv := make(flagVar, len(v)+1)
		copy(nv, v)
		v = nv
	}
	v[len(v)-1] = value
	return true
}

var v flagVar

func main() {
	flag.Var(&v, "testV", "multiple values build []string")
	flag.Parse()
	fmt.Printf("v = %v\n", v)
}

R=rsc
CC=golang-dev
https://golang.org/cl/842041

now runtime.MemStats.Sys really is the sum of all the other Sys fields.

R=r
CC=golang-dev
https://golang.org/cl/843041

Fixes #700.

R=ken2
CC=golang-dev
https://golang.org/cl/839041

R=rsc
CC=golang-dev
https://golang.org/cl/788041

R=rsc
CC=golang-dev
https://golang.org/cl/833042

R=gri
CC=golang-dev
https://golang.org/cl/837041

expvar: default publishings for cmdline, memstats
godoc: import expvar

R=r
CC=golang-dev
https://golang.org/cl/815041

( http://code.google.com/p/go/issues/detail?id=700 )

R=r
CC=golang-dev
https://golang.org/cl/827042

R=rsc, gri
CC=golang-dev
https://golang.org/cl/773041

Fixes #698.
Fixes #699.

R=rsc
CC=golang-dev
https://golang.org/cl/824041

R=rsc
CC=golang-dev
https://golang.org/cl/823041

Fixes #697

R=r
CC=golang-dev
https://golang.org/cl/804042

R=rsc
CC=golang-dev
https://golang.org/cl/763042

R=cemeyer, rsc
CC=golang-dev
https://golang.org/cl/809041

R=rsc
CC=golang-dev
https://golang.org/cl/800041

Fixes #186.

R=ken2
CC=golang-dev
https://golang.org/cl/793041

R=r
CC=golang-dev
https://golang.org/cl/790041

R=gri
CC=golang-dev
https://golang.org/cl/787041

R=r
CC=golang-dev
https://golang.org/cl/786041

TBR=r
CC=golang-dev
https://golang.org/cl/785041

R=gri
CC=golang-dev
https://golang.org/cl/784041

This is a modified version of the open source pprof
from code.google.com/p/google-perftools.
That version is likely to catch up to this one,
but it's still useful to ship our own copy since
we only need the one script from that project,
not all the C++ libraries.

R=r
CC=golang-dev
https://golang.org/cl/783041

eliminate second pass of mark+sweep
by scanning finalizer table specially.

R=r
CC=golang-dev
https://golang.org/cl/782041

Also amend j0.go (variable name conflict, small corrections).

R=rsc
CC=golang-dev
https://golang.org/cl/769041

In this change I'd like to combine the common code that is
present in syscall_darwin.go and syscall_freebsd.go.  I
have three reasons for wanting to do this now:

1. reducing code duplication is nearly always good :-)
2. the duplication will get worse if I duplicate this code
   a third time for the NetBSD port I'm working on, which
   I need to do almost immediately
3. by making this change all in one lump and ignoring any
   commonality with the syscall_linux*.go files the diff
   is long but, I think, readable

In future it may be possible to cherry pick functions that
also apply to Linux and put them in (say) syscall_unix.go,
and of course some functions may diverge in future and have
to move out to OS or architecture specific files, but today
I want just the low hanging fruit.

Tested and passed on:

  Darwin (Snow Leopard, 10.6): amd64 and 386
  FreeBSD (8.0-RELEASE):       386 only(*)

(*) All my virtualisation software has stopped playing nice
with FreeBSD for the moment, so I don't have facilities to
test the amd64 port.  As the OS X port is OK and the diff
looks all right to my eyes I shall keep my fingers crossed.
If someone with a FreeBSD/amd64 system cares to test and
report I would be appreciative.

2010-03-27 update: I have replaced my virtualisation software, and have working FreeBSD/i386 and FreeBSD/amd64 virtual machines again.

As I hoped (and expected -- programmers are optimists :-) the code built and passed all but the two currently known to fail tests on FreeBSD/amd64. I rechecked FreeBSD/i386 too: same results.

R=rsc
CC=golang-dev
https://golang.org/cl/751041

+ first use in go/doc

R=r
CC=golang-dev
https://golang.org/cl/781041

R=rsc
CC=golang-dev
https://golang.org/cl/778041