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runtime: correct out of memory error

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Fixes #1511.

R=golang-dev, iant2
CC=golang-dev
https://golang.org/cl/4433065
This commit is contained in:
Russ Cox 2011-04-25 12:13:54 -04:00
parent 4efdeeec51
commit a8bf6f32cc
3 changed files with 23 additions and 0 deletions
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7
src/pkg/runtime/darwin/mem.c
View File

@ -36,6 +36,11 @@ runtime·SysReserve(void *v, uintptr n)
return runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
}
enum
{
ENOMEM = 12,
};
void
runtime·SysMap(void *v, uintptr n)
{
@ -43,6 +48,8 @@ runtime·SysMap(void *v, uintptr n)
mstats.sys += n;
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);
if(p == (void*)-ENOMEM)
runtime·throw("runtime: out of memory");
if(p != v)
runtime·throw("runtime: cannot map pages in arena address space");
}

9
src/pkg/runtime/freebsd/mem.c
View File

@ -42,6 +42,11 @@ runtime·SysReserve(void *v, uintptr n)
return runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
}
enum
{
ENOMEM = 12,
};
void
runtime·SysMap(void *v, uintptr n)
{
@ -52,6 +57,8 @@ runtime·SysMap(void *v, uintptr n)
// On 64-bit, we don't actually have v reserved, so tread carefully.
if(sizeof(void*) == 8) {
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_PRIVATE, -1, 0);
if(p == (void*)-ENOMEM)
runtime·throw("runtime: out of memory");
if(p != v) {
runtime·printf("runtime: address space conflict: map(%p) = %p\n", v, p);
runtime·throw("runtime: address space conflict");
@ -60,6 +67,8 @@ runtime·SysMap(void *v, uintptr n)
}
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);
if(p == (void*)-ENOMEM)
runtime·throw("runtime: out of memory");
if(p != v)
runtime·throw("runtime: cannot map pages in arena address space");
}

7
src/pkg/runtime/linux/mem.c
View File

@ -48,6 +48,11 @@ runtime·SysReserve(void *v, uintptr n)
return runtime·mmap(v, n, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
}
enum
{
ENOMEM = 12,
};
void
runtime·SysMap(void *v, uintptr n)
{
@ -66,6 +71,8 @@ runtime·SysMap(void *v, uintptr n)
}
p = runtime·mmap(v, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_FIXED|MAP_PRIVATE, -1, 0);
if(p == (void*)-ENOMEM)
runtime·throw("runtime: out of memory");
if(p != v)
runtime·throw("runtime: cannot map pages in arena address space");
}