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Commit Graph

21 Commits

Author SHA1 Message Date
Maxim Pimenov
bf6dd2db04 various: use $GCFLAGS and $GCIMPORTS like Make does
R=golang-dev, rsc
CC=golang-dev
https://golang.org/cl/5489065
2011-12-16 11:31:39 -05:00
Russ Cox
2666b815a3 use new strconv API
All but 3 cases (in gcimporter.go and hixie.go)
are automatic conversions using gofix.

No attempt is made to use the new Append functions
even though there are definitely opportunities.

R=golang-dev, gri
CC=golang-dev
https://golang.org/cl/5447069
2011-12-05 15:48:46 -05:00
Russ Cox
db9229def8 cgo: add GoBytes, fix gmp example
Fixes #1640.
Fixes #2007.

R=golang-dev, adg
CC=golang-dev
https://golang.org/cl/4815063
2011-07-28 12:39:50 -04:00
Russ Cox
f9ca3b5d5b runtime: scheduler, cgo reorganization
* Change use of m->g0 stack (aka scheduler stack).
* Provide runtime.mcall(f) to invoke f() on m->g0 stack.
* Replace scheduler loop entry with runtime.mcall(schedule).

Runtime.mcall eliminates the need for fake scheduler states that
exist just to run a bit of code on the m->g0 stack
(Grecovery, Gstackalloc).

The elimination of the scheduler as a loop that stops and
starts using gosave and gogo fixes a bad interaction with the
way cgo uses the m->g0 stack.  Cgo runs external (gcc-compiled)
C functions on that stack, and then when calling back into Go,
it sets m->g0->sched.sp below the added call frames, so that
other uses of m->g0's stack will not interfere with those frames.
Unfortunately, gogo (longjmp) back to the scheduler loop at
this point would end up running scheduler with the lower
sp, which no longer points at a valid stack frame for
a call to scheduler.  If scheduler then wrote any function call
arguments or local variables to where it expected the stack
frame to be, it would overwrite other data on the stack.
I realized this possibility while debugging a problem with
calling complex Go code in a Go -> C -> Go cgo callback.
This wasn't the bug I was looking for, it turns out, but I believe
it is a real bug nonetheless.  Switching to runtime.mcall, which
only adds new frames to the stack and never jumps into
functions running in existing ones, fixes this bug.

* Move cgo-related code out of proc.c into cgocall.c.
* Add very large comment describing cgo call sequences.
* Simpilify, regularize cgo function implementations and names.
* Add test suite as misc/cgo/test.

Now the Go -> C path calls cgocall, which calls asmcgocall,
and the C -> Go path calls cgocallback, which calls cgocallbackg.

The shuffling, which affects mainly the callback case, moves
most of the callback implementation to cgocallback running
on the m->curg stack (not the m->g0 scheduler stack) and
only while accounted for with $GOMAXPROCS (between calls
to exitsyscall and entersyscall).

The previous callback code did not block in startcgocallback's
approximation to exitsyscall, so if, say, the garbage collector
were running, it would still barge in and start doing things
like call malloc.  Similarly endcgocallback's approximation of
entersyscall did not call matchmg to kick off new OS threads
when necessary, which caused the bug in issue 1560.

Fixes #1560.

R=iant
CC=golang-dev
https://golang.org/cl/4253054
2011-03-07 10:37:42 -05:00
Robert Griesemer
288a39c86b go/ast: reflect communication operator changes accurately in ast
- go/ast: introduce SendStmt; adjust SelectStmt
- go/parser: accept new communication syntax, minor
  unrelated cleanups
- go/printer: adjustments for new ast, fewer binary
  expression precedences
- go/token: remove one binary precedence

Adjusted dependent code. gofmt -w src -misc. Ran all tests.

R=rsc, gri
CC=golang-dev
https://golang.org/cl/3989056
2011-02-01 13:47:51 -08:00
Russ Cox
6c6d53052e cgo: handle references to symbols in shared libraries
Fixes #1334.

R=r
CC=golang-dev
https://golang.org/cl/3746041
2010-12-17 11:37:11 -08:00
Russ Cox
9da73612ed cgo: do not reset tag generator between files
Clean up an error message and error exit too.
Insert blank line after "DO NOT EDIT" comment
to keep it from being a doc comment.

Fixes #1213.
Fixes #1222.

R=r
CC=golang-dev
https://golang.org/cl/3608042
2010-12-13 13:20:04 -05:00
Russ Cox
a2450c1456 cgo: bug fixes
* Add documentation about array arguments.  Fixes issue 1125.
* Do not interpret x, y := z, w as special errno form.  Fixes issue 952.
* Fix nested Go calls (brainman).  Fixes issue 907.

R=r
CC=golang-dev
https://golang.org/cl/2214044
2010-09-21 22:41:19 -04:00
Christian Himpel
5c603dbb75 build: remove unnecessary references to GOBIN and GOROOT
All scripts and makefiles assume that GOBIN is correctly set
in PATH.

R=rsc
CC=golang-dev
https://golang.org/cl/2043041
2010-08-30 15:40:56 -04:00
Russ Cox
da392d9136 build: no required environment variables
R=adg, r, PeterGo
CC=golang-dev
https://golang.org/cl/1942044
2010-08-18 10:08:49 -04:00
Russ Cox
0432f289f7 cgo: various bug fixes
* remember #defined names, so that C.stdout can refer
  to the real name (on OS X) __stdoutp.
* better handling of #defined constant expressions
* allow n, err = C.strtol("asdf", 0, 123) to get errno as os.Error
* write all output files to current directory
* don't require gcc output if there was no input

Fixes #533.
Fixes #709.
Fixes #756.

R=r
CC=dho, golang-dev, iant
https://golang.org/cl/1734047
2010-07-14 17:17:53 -07:00
Robert Griesemer
5a1d3323fe 1) Change default gofmt default settings for
parsing and printing to new syntax.

                  Use -oldparser to parse the old syntax,
                  use -oldprinter to print the old syntax.

               2) Change default gofmt formatting settings
                  to use tabs for indentation only and to use
                  spaces for alignment. This will make the code
                  alignment insensitive to an editor's tabwidth.

                  Use -spaces=false to use tabs for alignment.

               3) Manually changed src/exp/parser/parser_test.go
                  so that it doesn't try to parse the parser's
                  source files using the old syntax (they have
                  new syntax now).

               4) gofmt -w src misc test/bench

	       1st set of files.

R=rsc
CC=agl, golang-dev, iant, ken2, r
https://golang.org/cl/180047
2009-12-15 15:33:31 -08:00
Devon H. O'Dell
857d4cf1a9 Remove GOBIN in PATH dependency; don't assume cwd is $GOROOT/src
This change removes the necessity to have GOBIN in $PATH,
and also doesn't assume that the build is being run from
$GOROOT/src. This is a minimal set of necessary changes
to get Go to build happily from the FreeBSD ports
collection.

R=rsc
CC=golang-dev
https://golang.org/cl/171044
2009-12-11 15:14:09 -08:00
Sergio Luis O. B. Correia
6fc820729e go: makes it build for the case $GOROOT has whitespaces
the bash scripts and makefiles for building go didn't take into account
the fact $GOROOT / $GOBIN could both be directories containing whitespaces,
and was not possible to build it in such a situation.

this commit adjusts the various makefiles/scripts to make it aware of that
possibility, and now it builds successfully when using a path with whitespaces
as well.

Fixes #115.

R=rsc, dsymonds1
https://golang.org/cl/157067
2009-11-23 17:32:51 -08:00
Devon H. O'Dell
60b1a17b9e More FreeBSD-touchups. Thundercats are GOOOOO!
R=rsc
CC=golang-dev
https://golang.org/cl/157074
2009-11-18 16:51:59 -08:00
Russ Cox
43bcf47912 make all.bash finish on FreeBSD
R=dho
CC=golang-dev
https://golang.org/cl/156067
2009-11-18 09:11:17 -08:00
Devon H. O'Dell
0489a260da FreeBSD-specific porting work.
cgo/libmach remain unimplemented. However, compilers, runtime,
and packages are 100%. I still need to go through and implement
missing syscalls (at least make sure they're all listed), but
for all shipped functionality, this is done. Ship! ;)

R=rsc, VenkateshSrinivas
https://golang.org/cl/152142
2009-11-17 08:20:58 -08:00
Robert Griesemer
40621d5c0d remove semis after statements in one-statement statement lists
R=rsc, r
http://go/go-review/1025029
2009-11-09 12:07:39 -08:00
Robert Griesemer
a074e37489 gofmt -w misc
R=rsc
http://go/go-review/1025004
2009-11-05 23:18:06 -08:00
Russ Cox
2d72b39fd3 add cgo test that doesn't depend on
non-standard libraries and add to build.

R=r
DELTA=211  (210 added, 0 deleted, 1 changed)
OCL=35293
CL=35307
2009-10-03 11:33:51 -07:00
Russ Cox
133a158bd8 8c, 8l dynamic loading support.
better mach binaries.
cgo working on darwin+linux amd64+386.
eliminated context switches - pi is 30x faster.
add libcgo to build.

on snow leopard:
  - non-cgo binaries work; all tests pass.
  - cgo binaries work on amd64 but not 386.

R=r
DELTA=2031  (1316 added, 626 deleted, 89 changed)
OCL=35264
CL=35304
2009-10-03 10:37:12 -07:00