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add wrapper for madvise

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This commit is contained in:
Daniel Micay 2021-03-22 12:24:26 -04:00
parent 73b78a8adb
commit b84af9b499
3 changed files with 11 additions and 2 deletions
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8
memory.c
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@ -92,6 +92,14 @@ int memory_remap_fixed(void *old, size_t old_size, void *new, size_t new_size) {
}
#endif
int memory_purge(void *ptr, size_t size) {
int ret = madvise(ptr, size, MADV_DONTNEED);
if (unlikely(ret) && errno != ENOMEM) {
fatal_error("non-ENOMEM MADV_DONTNEED madvise failure");
}
return ret;
}
void memory_set_name(UNUSED void *ptr, UNUSED size_t size, UNUSED const char *name) {
#ifdef LABEL_MEMORY
prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, ptr, size, name);