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runtime: report "out of memory" in efence mode

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Currently processes crash with obscure message.
Say that it's "out of memory".

LGTM=rsc
R=golang-codereviews
CC=golang-codereviews, khr, rsc
https://golang.org/cl/75820045
This commit is contained in:
Dmitriy Vyukov 2014-03-14 21:22:03 +04:00
parent 0da73b9f07
commit d8e6881166
1 changed files with 6 additions and 2 deletions
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8
src/pkg/runtime/stack.c
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@ -102,8 +102,12 @@ runtime·stackalloc(G *gp, uint32 n)
runtime·printf("stackalloc %d\n", n);
gp->stacksize += n;
if(runtime·debug.efence || StackFromSystem)
return runtime·SysAlloc(ROUND(n, PageSize), &mstats.stacks_sys);
if(runtime·debug.efence || StackFromSystem) {
v = runtime·SysAlloc(ROUND(n, PageSize), &mstats.stacks_sys);
if(v == nil)
runtime·throw("out of memory (stackalloc)");
return v;
}
// Minimum-sized stacks are allocated with a fixed-size free-list allocator,
// but if we need a stack of a bigger size, we fall back on malloc