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195 Commits

Author SHA1 Message Date
Russ Cox
8ddd6c4181 runtime: clock garbage collection on bytes allocated, not pages in use 
This keeps fragmentation from delaying
garbage collections (and causing more fragmentation).

Cuts fresh godoc (with indexes) from 261M to 166M (120M live).
Cuts toy wc program from 50M to 8M.

Fixes #647.

R=r, cw
CC=golang-dev
https://golang.org/cl/257041
 2010-03-08 14:15:44 -08:00
Ken Thompson
426099f42e 6g complex type usable 
8g and 5g have stubs to ignore complex

R=rsc
CC=golang-dev
https://golang.org/cl/257042
 2010-03-05 20:16:04 -08:00
Russ Cox
36c5c5bf40 cc: disallow ... argument unless NOSPLIT is set. 
check that NOSPLIT functions don't use too much stack.
correct some missing NOSPLITs in the runtime library.

Fixes bug reported in
https://groups.google.com/group/golang-nuts/t/efff68b73941eccf

R=ken2
CC=golang-dev
https://golang.org/cl/236041
 2010-03-04 15:34:25 -08:00
Russ Cox
3910161307 gc: implement []int(string) and []byte(string) 
R=ken2
CC=golang-dev
https://golang.org/cl/224060
 2010-02-25 15:11:07 -08:00
Ian Lance Taylor
bada653f4d Use consistent types in .h file and .c file. 
R=rsc
CC=golang-dev
https://golang.org/cl/224053
 2010-02-25 10:13:09 -08:00
Ian Lance Taylor
7c99dcbdf9 Install runtime.h and cgocall.h. 
This permits cgo generated code to use these header files even
if the Go sources are not around.

R=rsc
CC=golang-dev
https://golang.org/cl/224045
 2010-02-24 17:00:25 -08:00
Russ Cox
8ba5c5593f runtime: work around Linux kernel bug in futex 
Fixes #420.

R=r
CC=golang-dev
https://golang.org/cl/218065
 2010-02-22 20:45:36 -08:00
Ken Thompson
f59cb49a5a fixed bug in mpconst float multiply by 0. 
more complex -- constants, variables and print.

R=rsc
CC=golang-dev
https://golang.org/cl/217061
 2010-02-19 20:42:50 -08:00
Kai Backman
c0aac20e20 combined pchw and embedded into tiny. added section on arm to README 
R=rsc
CC=golang-dev
https://golang.org/cl/194151
 2010-02-18 23:33:21 -08:00
Ken Thompson
713e3e1541 more complex - constants 
import and export

R=rsc
CC=golang-dev
https://golang.org/cl/214050
 2010-02-18 14:46:28 -08:00
Ken Thompson
33d6a260c1 new types complex, complex64 and complex128 
only front-end compiler work.
best to do thin in 3 steps
1. frontend
2. backend
3. lib

R=rsc
CC=golang-dev
https://golang.org/cl/214042
 2010-02-17 22:08:30 -08:00
Russ Cox
04d9c8853b runtime: fix bug in Caller documentation 
R=r
CC=golang-dev
https://golang.org/cl/207110
 2010-02-16 16:11:11 -08:00
Russ Cox
9f77e7ea3c runtime: dummy gettime for mingw/386. 
Fixes #598.

R=adg
CC=golang-dev
https://golang.org/cl/206089
 2010-02-12 12:49:16 -08:00
Russ Cox
22a7f2a14d runtime: delete MHeapMapCache, which is useless 
because free needs to mark the block as freed to
coordinate with the garbage collector.

(in C++ free can blindly put the block on the free list,
no questions asked, so the cache saves some work.)

R=iant
CC=golang-dev
https://golang.org/cl/206069
 2010-02-10 21:23:08 -08:00
Russ Cox
66cdc699b2 arm: fix build on android 
R=kaib
CC=golang-dev
https://golang.org/cl/206059
 2010-02-10 15:01:02 -08:00
Russ Cox
fb94be55dc runtime: tighten garbage collector 
* specialize sweepspan as sweepspan0 and sweepspan1.
 * in sweepspan1, inline "free" to avoid expensive mlookup.

R=iant
CC=golang-dev
https://golang.org/cl/206060
 2010-02-10 14:59:39 -08:00
Russ Cox
991a968f44 runtime: do not zero blocks on free (this time for sure!) 
R=iant
CC=golang-dev
https://golang.org/cl/207054
 2010-02-10 11:31:00 -08:00
Russ Cox
f25586a306 runtime: garbage collection + malloc performance 
* add bit tracking finalizer status, avoiding getfinalizer lookup
  * add ability to allocate uncleared memory

R=iant
CC=golang-dev
https://golang.org/cl/207044
 2010-02-10 00:00:12 -08:00
Russ Cox
2b4a9fa176 fix NaCl build for latest runtime changes 
R=iant
CC=golang-dev
https://golang.org/cl/206052
 2010-02-09 16:56:22 -08:00
Russ Cox
de90a7d4aa runtime: fix FreeBSD build 
stab in the dark but plausible: the kernel does try to
return time zone information.
http://fxr.watson.org/fxr/source/kern/kern_time.c?v=FREEBSD8#L421

R=iant
CC=golang-dev
https://golang.org/cl/206053
 2010-02-09 16:54:51 -08:00
Russ Cox
62d627f0bc runtime: allow arbitrary return type in SetFinalizer. 
finalize chan, to free OS X semaphore inside Lock.
os: finalize File, to close fd.

Fixes #503.

R=ken2
CC=golang-dev
https://golang.org/cl/204065
 2010-02-08 21:41:54 -08:00
Russ Cox
e4f06812c5 runtime: instrument malloc + garbage collector. 
add simple garbage collection benchmark.

R=iant
CC=golang-dev
https://golang.org/cl/204053
 2010-02-08 14:32:22 -08:00
Russ Cox
87915b6565 runtime: introduce MemStatsType 
R=ken2
CC=golang-dev
https://golang.org/cl/204061
 2010-02-07 01:20:44 -08:00
Kai Backman
ebf32c5868 fix comment 
R=rsc
CC=golang-dev
https://golang.org/cl/203053
 2010-02-06 21:59:46 -08:00
Andrew Gerrand
8ec9ffc742 6l: move mapped symbol table lower in memory 
Allows binary to run on some Linux system.

Fix for issue 365.

R=rsc
CC=golang-dev
https://golang.org/cl/199096
 2010-02-04 12:46:11 -08:00
Christopher Wedgwood
43d2e59a81 os/signal: send SIGCHLDs to Incoming 
R=rsc
CC=golang-dev
https://golang.org/cl/199082
 2010-02-03 23:24:28 -08:00
Russ Cox
33e396a4a7 finalizers; merge package malloc into package runtime 
R=r, cw
CC=golang-dev
https://golang.org/cl/198085
 2010-02-03 16:31:34 -08:00
Russ Cox
1f11ece67f nacl: fix build, finally fixed 8l convergence bug 
R=r
CC=golang-dev
https://golang.org/cl/199042
 2010-02-01 15:20:19 -08:00
Russ Cox
68796b0270 gc: add ... T, rework plain ... 
No longer a distinct type; now a property of func types.

R=ken2
CC=golang-dev
https://golang.org/cl/197042
 2010-02-01 00:25:59 -08:00
Russ Cox
a186b77b03 gc: implement defer print/println/panic/panicln 
Fixes #219.

R=ken2, r
CC=golang-dev
https://golang.org/cl/194097
 2010-01-27 15:37:08 -08:00
Kai Backman
9f5264f299 small embedded target for arm. 
R=rsc
CC=golang-dev
https://golang.org/cl/193104
 2010-01-26 20:22:59 -08:00
Russ Cox
718be3215f in C and asm, replace pkg·name with ·name 
(eliminate assumption of package global name space,
make code easier to move between packages).

R=r
CC=golang-dev
https://golang.org/cl/194072
 2010-01-25 18:52:55 -08:00
Russ Cox
1912632019 runtime, type switch: eliminate package global name space assumption 
bonus: type switch now detects multiple uses of identical interface types.
bonus: interface types are now order-independent, following the spec.

R=ken2
CC=golang-dev
https://golang.org/cl/194053
 2010-01-25 18:23:20 -08:00
Russ Cox
1cecac8134 gc: record full package paths in runtime type data 
detect compilation of special package runtime with
compiler flag instead of package name.

R=ken2
CC=golang-dev
https://golang.org/cl/193080
 2010-01-24 23:33:59 -08:00
Russ Cox
0365b989a4 runtime: wait to allocate mach semaphores backing Locks until needed 
need better management of mach semaphores eventually
but this avoids allocating them for uncontended Locks.

R=r
CC=agl1, golang-dev
https://golang.org/cl/190079
 2010-01-19 21:14:15 -08:00
Russ Cox
da9bc7ae7d runtime: add demo running Go on raw (emulated) hw 
8l: add GOOS=pchw, stop spelling out all the elf numbers.

R=r
CC=golang-dev
https://golang.org/cl/186144
 2010-01-13 19:51:59 -08:00
Devon H. O'Dell
1564b984a5 runtime: GS already set up by setldt in Linux/386; remove duplicate 
R=rsc
CC=golang-dev
https://golang.org/cl/186146
 2010-01-13 17:50:12 -08:00
Russ Cox
12518e441b runtime cleanup. 
* move memory code into $GOOS-specific directory.
  * allow printing of static strings < 256 bytes.
    (dynamic strings will bump maxstring as they are allocated.)
  * use cgo2c for runtime.mal.

R=r, dho
CC=golang-dev
https://golang.org/cl/186143
 2010-01-13 17:50:02 -08:00
Russ Cox
f85abf01bc runtime: reset DF flag after running external code on 386 
R=r
CC=golang-dev
https://golang.org/cl/186108
 2010-01-13 09:08:39 -08:00
Russ Cox
711088106e runtime: fix bug in preemption checks; was causing "lock count" panics 
R=r
CC=golang-dev
https://golang.org/cl/186078
 2010-01-12 10:03:02 -08:00
Russ Cox
5328df6534 runtime: check for preemption due to garbage collection 
in various already expensive routines.

helps keep cpu utilization up when GOMAXPROCS > 1,
but not a full solution.

http://groups.google.com/group/golang-nuts/t/7a9535c4136d3e2

R=r
CC=golang-dev
https://golang.org/cl/184043
 2010-01-09 09:47:45 -08:00
Russ Cox
74a9fc18f6 runtime: close TODO now that 8c bug is fixed 
R=r
CC=golang-dev
https://golang.org/cl/183138
 2010-01-06 19:24:11 -08:00
Hector Chu
6bfe5f55f4 Ported runtime to Windows. 
R=rsc
CC=golang-dev
https://golang.org/cl/176066
 2010-01-06 17:58:55 -08:00
Adam Langley
50d6c81d4a runtime: fix race condition 
(Thanks to ken and rsc for pointing this out)

rsc:
	ken pointed out that there's a race in the new
	one-lock-per-channel code.  the issue is that
	if one goroutine has gone to sleep doing

	select {
	case <-c1:
	case <-c2:
	}

	and then two more goroutines try to send
	on c1 and c2 simultaneously, the way that
	the code makes sure only one wins is the
	selgen field manipulation in dequeue:

	       // if sgp is stale, ignore it
	       if(sgp->selgen != sgp->g->selgen) {
		       //prints("INVALID PSEUDOG POINTER\n");
		       freesg(c, sgp);
		       goto loop;
	       }

	       // invalidate any others
	       sgp->g->selgen++;

	but because the global lock is gone both
	goroutines will be fiddling with sgp->g->selgen
	at the same time.

This results in a 7% slowdown in the single threaded case for a
ping-pong microbenchmark.

Since the cas predominantly succeeds, adding a simple check first
didn't make any difference.

R=rsc
CC=golang-dev
https://golang.org/cl/180068
 2009-12-18 12:25:53 -08:00
Kai Backman
d85bb81878 first stub for softfloats, intercepts float instructions and skips 
them in the stream.

R=rsc
https://golang.org/cl/174052
 2009-12-17 16:08:42 -08:00
Russ Cox
08579c26dd runtime: if os/signal is not in use, crash on 
most signals, so that ordinary programs
	can be killed, for example.

Fixes #434.

R=dsymonds1
CC=golang-dev, hoisie
https://golang.org/cl/180064
 2009-12-16 20:20:50 -08:00
David Symonds
b5866494ea os/signal: new package 
Fixes #71.

R=rsc, r
https://golang.org/cl/162056
 2009-12-15 18:21:29 -08:00
Russ Cox
d16bc7a9f2 runtime: return zero value in x, ok = <-c when ok == false 
Fixes #401.

R=ken2
https://golang.org/cl/180053
 2009-12-15 16:59:23 -08:00
Robert Griesemer
d65a5cce89 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

4th set of files.

R=rsc
CC=golang-dev
https://golang.org/cl/180049
 2009-12-15 15:40:16 -08:00
Russ Cox
19c18358ca runtime: in exitsyscall, avoid confusing garbage collector 
R=r
CC=golang-dev
https://golang.org/cl/178046
 2009-12-14 19:06:20 -08:00