diff options
Diffstat (limited to 'src/runtime/runtime2.go')
| -rw-r--r-- | src/runtime/runtime2.go | 39 |
1 files changed, 29 insertions, 10 deletions
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go index 519872b8e2..a2e4411c7d 100644 --- a/src/runtime/runtime2.go +++ b/src/runtime/runtime2.go @@ -387,14 +387,6 @@ type libcall struct { err uintptr // error number } -// describes how to handle callback -type wincallbackcontext struct { - gobody unsafe.Pointer // go function to call - argsize uintptr // callback arguments size (in bytes) - restorestack uintptr // adjust stack on return by (in bytes) (386 only) - cleanstack bool -} - // Stack describes a Go execution stack. // The bounds of the stack are exactly [lo, hi), // with no implicit data structures on either side. @@ -528,6 +520,7 @@ type m struct { ncgo int32 // number of cgo calls currently in progress cgoCallersUse uint32 // if non-zero, cgoCallers in use temporarily cgoCallers *cgoCallers // cgo traceback if crashing in cgo call + doesPark bool // non-P running threads: sysmon and newmHandoff never use .park park note alllink *m // on allm schedlink muintptr @@ -544,6 +537,13 @@ type m struct { syscalltick uint32 freelink *m // on sched.freem + // mFixup is used to synchronize OS related m state (credentials etc) + // use mutex to access. + mFixup struct { + lock mutex + fn func(bool) bool + } + // these are here because they are too large to be on the stack // of low-level NOSPLIT functions. libcall libcall @@ -646,6 +646,13 @@ type p struct { // This is 0 if the timer heap is empty. timer0When uint64 + // The earliest known nextwhen field of a timer with + // timerModifiedEarlier status. Because the timer may have been + // modified again, there need not be any timer with this value. + // This is updated using atomic functions. + // This is 0 if the value is unknown. + timerModifiedEarliest uint64 + // Per-P GC state gcAssistTime int64 // Nanoseconds in assistAlloc gcFractionalMarkTime int64 // Nanoseconds in fractional mark worker (atomic) @@ -768,6 +775,10 @@ type schedt struct { sysmonwait uint32 sysmonnote note + // While true, sysmon not ready for mFixup calls. + // Accessed atomically. + sysmonStarting uint32 + // safepointFn should be called on each P at the next GC // safepoint if p.runSafePointFn is set. safePointFn func(*p) @@ -1035,14 +1046,22 @@ func (w waitReason) String() string { var ( allglen uintptr allm *m - allp []*p // len(allp) == gomaxprocs; may change at safe points, otherwise immutable - allpLock mutex // Protects P-less reads of allp and all writes gomaxprocs int32 ncpu int32 forcegc forcegcstate sched schedt newprocs int32 + // allpLock protects P-less reads and size changes of allp and + // idlepMask, and all writes to allp. + allpLock mutex + // len(allp) == gomaxprocs; may change at safe points, otherwise + // immutable. + allp []*p + // Bitmask of Ps in _Pidle list, one bit per P. Reads and writes must + // be atomic. Length may change at safe points. + idlepMask pIdleMask + // Information about what cpu features are available. // Packages outside the runtime should not use these // as they are not an external api. |