runtime: integrated network poller for darwin
vs tip:
benchmark old ns/op new ns/op delta
BenchmarkTCP4Persistent 67786 33175 -51.06%
BenchmarkTCP4Persistent-2 49085 31227 -36.38%
BenchmarkTCP4PersistentTimeout 69265 32565 -52.98%
BenchmarkTCP4PersistentTimeout-2 49217 32588 -33.79%
vs old scheduler:
benchmark old ns/op new ns/op delta
BenchmarkTCP4Persistent 63517 33175 -47.77%
BenchmarkTCP4Persistent-2 54760 31227 -42.97%
BenchmarkTCP4PersistentTimeout 63234 32565 -48.50%
BenchmarkTCP4PersistentTimeout-2 56956 32588 -42.78%
R=golang-dev, bradfitz, devon.odell, mikioh.mikioh, iant, rsc
CC=golang-dev, pabuhr
https://golang.org/cl/7569043
diff --git a/src/pkg/runtime/sys_darwin_386.s b/src/pkg/runtime/sys_darwin_386.s
index d27abc7..99cd8e7 100644
--- a/src/pkg/runtime/sys_darwin_386.s
+++ b/src/pkg/runtime/sys_darwin_386.s
@@ -488,3 +488,32 @@
RET
MOVL $0, AX
RET
+
+// int32 runtime·kqueue(void);
+TEXT runtime·kqueue(SB),7,$0
+ MOVL $362, AX
+ INT $0x80
+ JAE 2(PC)
+ NEGL AX
+ RET
+
+// int32 runtime·kevent(int kq, Kevent *changelist, int nchanges, Kevent *eventlist, int nevents, Timespec *timeout);
+TEXT runtime·kevent(SB),7,$0
+ MOVL $363, AX
+ INT $0x80
+ JAE 2(PC)
+ NEGL AX
+ RET
+
+// int32 runtime·closeonexec(int32 fd);
+TEXT runtime·closeonexec(SB),7,$32
+ MOVL $92, AX // fcntl
+ // 0(SP) is where the caller PC would be; kernel skips it
+ MOVL fd+0(FP), BX
+ MOVL BX, 4(SP) // fd
+ MOVL $2, 8(SP) // F_SETFD
+ MOVL $1, 12(SP) // FD_CLOEXEC
+ INT $0x80
+ JAE 2(PC)
+ NEGL AX
+ RET
