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David Lazar 3249cb0ab4 runtime/trace: iterate over frames instead of PCs
Now the runtime/trace tests pass with -l=4.

This also gets rid of the frames cache for multiple reasons:

1) The frames cache was used to avoid repeated calls to funcname and
funcline. Now these calls happen inside the CallersFrames iterator.

2) Maintaining a frames cache is harder: map[uintptr]traceFrame
doesn't work since each PC can map to multiple traceFrames.

3) It's not clear that the cache is important.

Change-Id: I2914ac0b3ba08e39b60149d99a98f9f532b35bbb
Reviewed-on: https://go-review.googlesource.com/40591
Run-TryBot: David Lazar <lazard@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
2017-04-14 12:21:21 +00:00
.github doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
api math/big: define Word as uint instead of uintptr 2017-02-21 19:31:40 +00:00
doc spec: clarify size hint for make of maps 2017-04-13 16:15:45 +00:00
lib/time *.bash: always use the same string equality operator 2017-03-14 21:46:31 +00:00
misc cmd/internal/obj: stop storing Text flags in From3 2017-04-12 21:53:39 +00:00
src runtime/trace: iterate over frames instead of PCs 2017-04-14 12:21:21 +00:00
test test: disable flaky test/fixedbugs/issue10958.go 2017-04-13 18:28:29 +00:00
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.gitignore cmd/dist: move cmd/go z files to cmd/go/internal/cfg 2017-02-03 20:30:52 +00:00
AUTHORS A+C: automated update 2016-12-21 03:22:22 +00:00
CONTRIBUTING.md doc: improve issue template and contribution guidelines 2017-02-11 20:42:06 +00:00
CONTRIBUTORS A+C: automated update 2016-12-21 03:22:22 +00:00
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README.md readme: add attribution for the Gopher image 2017-02-03 19:39:41 +00:00
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