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| author | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-05-31 17:56:36 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@gcc.gnu.org> | 2019-05-31 17:56:36 +0000 |
| commit | 4d12cf3cc3143843225ecdb0e5048fc7c37b1574 (patch) | |
| tree | 30d27f1ac980671a5b890c86e562a746f4f4b54e /libgo/testsuite | |
| parent | 34a13a521e3fc6f46fcaf2f158d20e66874e99fd (diff) | |
| download | gcc-4d12cf3cc3143843225ecdb0e5048fc7c37b1574.zip gcc-4d12cf3cc3143843225ecdb0e5048fc7c37b1574.tar.gz gcc-4d12cf3cc3143843225ecdb0e5048fc7c37b1574.tar.bz2 | |
runtime: implement cheaper context switch on Linux/AMD64
Currently, goroutine switches are implemented with libc
getcontext/setcontext functions, which saves/restores the machine
register states and also the signal context. This does more than
what we need, and performs an expensive syscall.
This CL implements a simplified version of getcontext/setcontext,
in assembly, that only saves/restores the necessary part, i.e.
the callee-save registers, and the PC, SP. A simplified version
of makecontext, written in C, is also added. Currently this is
only implemented on Linux/AMD64.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/178298
From-SVN: r271818
Diffstat (limited to 'libgo/testsuite')
| -rw-r--r-- | libgo/testsuite/Makefile.in | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libgo/testsuite/Makefile.in b/libgo/testsuite/Makefile.in index 1307589..4b4d07d 100644 --- a/libgo/testsuite/Makefile.in +++ b/libgo/testsuite/Makefile.in @@ -141,6 +141,9 @@ AUTOHEADER = @AUTOHEADER@ AUTOMAKE = @AUTOMAKE@ AWK = @AWK@ CC = @CC@ +CCAS = @CCAS@ +CCASDEPMODE = @CCASDEPMODE@ +CCASFLAGS = @CCASFLAGS@ CCDEPMODE = @CCDEPMODE@ CC_FOR_BUILD = @CC_FOR_BUILD@ CFLAGS = @CFLAGS@ @@ -273,6 +276,7 @@ pdfdir = @pdfdir@ prefix = @prefix@ program_transform_name = @program_transform_name@ psdir = @psdir@ +runstatedir = @runstatedir@ sbindir = @sbindir@ sharedstatedir = @sharedstatedir@ srcdir = @srcdir@ |