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runtime: use standard comment style in cgocall 

Change-Id: I9f2c2da4aa512729ae40562b06601da95ba50d6f
Reviewed-on: https://go-review.googlesource.com/33689
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Keith Randall <khr@golang.org>
This commit is contained in:
Austin Clements 2016-11-30 10:43:14 -05:00
parent 2b1abf7594
commit 3f0f24df7b
1 changed files with 11 additions and 15 deletions
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26
src/runtime/cgocall.go
View File

@ -104,10 +104,8 @@ func cgocall(fn, arg unsafe.Pointer) int32 {
racereleasemerge(unsafe.Pointer(&racecgosync))
}
/*
* Lock g to m to ensure we stay on the same stack if we do a
* cgo callback. In case of panic, unwindm calls endcgo.
*/
// Lock g to m to ensure we stay on the same stack if we do a
// cgo callback. In case of panic, unwindm calls endcgo.
lockOSThread()
mp := getg().m
mp.ncgocall++
@ -116,17 +114,15 @@ func cgocall(fn, arg unsafe.Pointer) int32 {
// Reset traceback.
mp.cgoCallers[0] = 0
/*
* Announce we are entering a system call
* so that the scheduler knows to create another
* M to run goroutines while we are in the
* foreign code.
*
* The call to asmcgocall is guaranteed not to
* split the stack and does not allocate memory,
* so it is safe to call while "in a system call", outside
* the $GOMAXPROCS accounting.
*/
// Announce we are entering a system call
// so that the scheduler knows to create another
// M to run goroutines while we are in the
// foreign code.
//
// The call to asmcgocall is guaranteed not to
// split the stack and does not allocate memory,
// so it is safe to call while "in a system call", outside
// the $GOMAXPROCS accounting.
entersyscall(0)
errno := asmcgocall(fn, arg)
exitsyscall(0)