diff options
Diffstat (limited to 'src/runtime')
| -rw-r--r-- | src/runtime/stack.go | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/src/runtime/stack.go b/src/runtime/stack.go index 7860cb183e..e1c70c3158 100644 --- a/src/runtime/stack.go +++ b/src/runtime/stack.go @@ -121,8 +121,7 @@ const ( stackFromSystem = 0 // allocate stacks from system memory instead of the heap stackFaultOnFree = 0 // old stacks are mapped noaccess to detect use after free stackPoisonCopy = 0 // fill stack that should not be accessed with garbage, to detect bad dereferences during copy - - stackCache = 1 + stackNoCache = 0 // disable per-P small stack caches // check the BP links during traceback. debugCheckBP = false @@ -349,7 +348,7 @@ func stackalloc(n uint32) stack { // If we need a stack of a bigger size, we fall back on allocating // a dedicated span. var v unsafe.Pointer - if stackCache != 0 && n < _FixedStack<<_NumStackOrders && n < _StackCacheSize { + if n < _FixedStack<<_NumStackOrders && n < _StackCacheSize { order := uint8(0) n2 := n for n2 > _FixedStack { @@ -358,7 +357,7 @@ func stackalloc(n uint32) stack { } var x gclinkptr c := thisg.m.mcache - if c == nil || thisg.m.preemptoff != "" || thisg.m.helpgc != 0 { + if stackNoCache != 0 || c == nil || thisg.m.preemptoff != "" || thisg.m.helpgc != 0 { // c == nil can happen in the guts of exitsyscall or // procresize. Just get a stack from the global pool. // Also don't touch stackcache during gc @@ -443,7 +442,7 @@ func stackfree(stk stack) { if msanenabled { msanfree(v, n) } - if stackCache != 0 && n < _FixedStack<<_NumStackOrders && n < _StackCacheSize { + if n < _FixedStack<<_NumStackOrders && n < _StackCacheSize { order := uint8(0) n2 := n for n2 > _FixedStack { @@ -452,7 +451,7 @@ func stackfree(stk stack) { } x := gclinkptr(v) c := gp.m.mcache - if c == nil || gp.m.preemptoff != "" || gp.m.helpgc != 0 { + if stackNoCache != 0 || c == nil || gp.m.preemptoff != "" || gp.m.helpgc != 0 { lock(&stackpoolmu) stackpoolfree(x, order) unlock(&stackpoolmu) |