diff options
Diffstat (limited to 'src/runtime/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 27 |
1 files changed, 19 insertions, 8 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index 402d49ac82..9e547f8200 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -412,14 +412,25 @@ type g struct { stackguard0 uintptr // offset known to liblink stackguard1 uintptr // offset known to liblink - _panic *_panic // innermost panic - offset known to liblink - _defer *_defer // innermost defer - m *m // current m; offset known to arm liblink - sched gobuf - syscallsp uintptr // if status==Gsyscall, syscallsp = sched.sp to use during gc - syscallpc uintptr // if status==Gsyscall, syscallpc = sched.pc to use during gc - stktopsp uintptr // expected sp at top of stack, to check in traceback - param unsafe.Pointer // passed parameter on wakeup + _panic *_panic // innermost panic - offset known to liblink + _defer *_defer // innermost defer + m *m // current m; offset known to arm liblink + sched gobuf + syscallsp uintptr // if status==Gsyscall, syscallsp = sched.sp to use during gc + syscallpc uintptr // if status==Gsyscall, syscallpc = sched.pc to use during gc + stktopsp uintptr // expected sp at top of stack, to check in traceback + // param is a generic pointer parameter field used to pass + // values in particular contexts where other storage for the + // parameter would be difficult to find. It is currently used + // in three ways: + // 1. When a channel operation wakes up a blocked goroutine, it sets param to + // point to the sudog of the completed blocking operation. + // 2. By gcAssistAlloc1 to signal back to its caller that the goroutine completed + // the GC cycle. It is unsafe to do so in any other way, because the goroutine's + // stack may have moved in the meantime. + // 3. By debugCallWrap to pass parameters to a new goroutine because allocating a + // closure in the runtime is forbidden. + param unsafe.Pointer atomicstatus uint32 stackLock uint32 // sigprof/scang lock; TODO: fold in to atomicstatus goid int64 |