mirror of
https://github.com/golang/go
synced 2024-11-20 04:24:51 -07:00
12518e441b
* move memory code into $GOOS-specific directory.
* allow printing of static strings < 256 bytes.
(dynamic strings will bump maxstring as they are allocated.)
* use cgo2c for runtime.mal.
R=r, dho
CC=golang-dev
https://golang.org/cl/186143
41 lines
647 B
C
41 lines
647 B
C
#include "runtime.h"
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#include "defs.h"
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#include "os.h"
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#include "malloc.h"
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void*
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SysAlloc(uintptr n)
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{
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void *p;
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mstats.sys += n;
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p = runtime_mmap(nil, n, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_ANON|MAP_PRIVATE, -1, 0);
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if(p < (void*)4096) {
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if(p == (void*)EACCES) {
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printf("mmap: access denied\n");
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printf("If you're running SELinux, enable execmem for this process.\n");
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} else {
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printf("mmap: errno=%p\n", p);
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}
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exit(2);
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}
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return p;
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}
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void
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SysUnused(void *v, uintptr n)
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{
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USED(v);
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USED(n);
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// TODO(rsc): call madvise MADV_DONTNEED
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}
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void
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SysFree(void *v, uintptr n)
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{
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USED(v);
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USED(n);
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// TODO(rsc): call munmap
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}
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