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| author | Akshat Kumar <seed@mail.nanosouffle.net> | 2013-03-08 00:54:44 +0100 |
|---|---|---|
| committer | Ron Minnich <rminnich@gmail.com> | 2013-03-08 00:54:44 +0100 |
| commit | a566deace1d96cd517e79227937e3036baca7ee2 (patch) | |
| tree | a5973da40ca4bfcafd0f98a0284ac8c02d740270 /src/pkg/runtime/runtime.h | |
| parent | 2ac799cfbcf212675d64ea0df835ca6c2e2aa368 (diff) | |
| download | go-a566deace1d96cd517e79227937e3036baca7ee2.tar.xz | |
syscall: Plan 9: use lightweight errstr in entersyscall mode
Change 231af8ac63aa (CL 7314062) made runtime.enteryscall()
set m->mcache = nil, which means that we can no longer use
syscall.errstr in syscall.Syscall and syscall.Syscall6, since it
requires a new buffer to be allocated for holding the error string.
Instead, we use pre-allocated per-M storage to hold error strings
from syscalls made while in entersyscall mode, and call
runtime.findnull to calculate the lengths.
Fixes #4994.
R=rsc, rminnich, ality, dvyukov, rminnich, r
CC=golang-dev
https://golang.org/cl/7567043
Diffstat (limited to 'src/pkg/runtime/runtime.h')
| -rw-r--r-- | src/pkg/runtime/runtime.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/pkg/runtime/runtime.h b/src/pkg/runtime/runtime.h index e44064f1ae..66bcf603bd 100644 --- a/src/pkg/runtime/runtime.h +++ b/src/pkg/runtime/runtime.h @@ -320,6 +320,7 @@ struct M #endif #ifdef GOOS_plan9 int8* notesig; + byte* errstr; #endif SEH* seh; uintptr end[]; |