81b1d3da09
Windows' memory unmapping has to be explicit, there is no madvise. Similarly, re-mapping memory has to be explicit as well. This patch implements a basic method for remapping memory which was previously returned to the OS on Windows. Patch by Matthew G. McGovern and Jordyn Puryear
31 lines
637 B
C++
31 lines
637 B
C++
#include <Windows.h>
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#include <stdio.h>
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#include <sanitizer/allocator_interface.h>
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#include <psapi.h>
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// RUN: %clang_cl_asan -Od %s -Fe%t
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// RUN: %t
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// REQUIRES: asan-64-bits
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size_t GetRSS() {
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PROCESS_MEMORY_COUNTERS counters;
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if (!GetProcessMemoryInfo(GetCurrentProcess(), &counters, sizeof(counters)))
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return 0;
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return counters.WorkingSetSize;
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}
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int main(){
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for (int i = 0; i < 1000; i++) {
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void* a = malloc(1000);
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free(a);
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}
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size_t rss_pre = GetRSS();
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__sanitizer_purge_allocator();
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size_t rss_post = GetRSS();
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if (rss_pre <= rss_post){
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return -1;
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}
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return 0;
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} |