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47 lines (41 loc) · 1006 Bytes
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pycore_mmap.h
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47 lines (41 loc) · 1006 Bytes
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#ifndef Py_INTERNAL_MMAP_H
#define Py_INTERNAL_MMAP_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_pystate.h"
#if defined(HAVE_PR_SET_VMA_ANON_NAME) && defined(__linux__)
# include <linux/prctl.h>
# include <sys/prctl.h>
#endif
#if defined(HAVE_PR_SET_VMA_ANON_NAME) && defined(__linux__)
static inline int
_PyAnnotateMemoryMap(void *addr, size_t size, const char *name)
{
#ifndef Py_DEBUG
if (!_Py_GetConfig()->dev_mode) {
return 0;
}
#endif
// The name length cannot exceed 80 (including the '\0').
assert(strlen(name) < 80);
int res = prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, (unsigned long)addr, size, name);
if (res < 0) {
return -1;
}
return 0;
}
#else
static inline int
_PyAnnotateMemoryMap(void *Py_UNUSED(addr), size_t Py_UNUSED(size), const char *Py_UNUSED(name))
{
return 0;
}
#endif
#ifdef __cplusplus
}
#endif
#endif // !Py_INTERNAL_MMAP_H