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runtime: handle locked mmap failure on Linux

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Used to then die on a nil pointer situation. Most Linux standard setups are rather
restrictive regarding the default amount of lockable memory.

R=minux.ma, rsc
CC=golang-dev
https://golang.org/cl/6997049
This commit is contained in:
Sébastien Paolacci 2012-12-29 14:34:06 -05:00 committed by Russ Cox
parent 975bf6d323
commit e786829e83
1 changed files with 5 additions and 0 deletions
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5
src/pkg/runtime/mem_linux.c
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@ -10,6 +10,7 @@
enum
{
EAGAIN = 11,
ENOMEM = 12,
_PAGE_SIZE = 4096,
};
@ -63,6 +64,10 @@ runtime·SysAlloc(uintptr n)
runtime·printf("if you're running SELinux, enable execmem for this process.\n");
runtime·exit(2);
}
if(p == (void*)EAGAIN) {
runtime·printf("runtime: mmap: too much locked memory (check 'ulimit -l').\n");
runtime·exit(2);
}
return nil;
}
return p;