| 1 | // Test the mmap_limit_mb flag. |
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| 2 | // |
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| 3 | // Unstable on watchOS devices under memory pressure. |
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| 4 | // UNSUPPORTED: watchos |
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| 5 | // |
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| 6 | // RUN: %clangxx_asan -O2 %s -o %t |
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| 7 | // RUN: %run %t 20 16 |
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| 8 | // RUN: %run %t 30 1000000 |
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| 9 | // RUN: %env_asan_opts=mmap_limit_mb=300 %run %t 20 16 |
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| 10 | // RUN: %env_asan_opts=mmap_limit_mb=300 %run %t 20 1000000 |
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| 11 | // RUN: %env_asan_opts=mmap_limit_mb=300 not %run %t 500 16 2>&1 | FileCheck %s |
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| 12 | // RUN: %env_asan_opts=mmap_limit_mb=300 not %run %t 500 1000000 2>&1 | FileCheck %s |
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| 13 | // |
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| 14 | // FIXME: Windows doesn't implement mmap_limit_mb. |
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| 15 | // XFAIL: target={{.*windows-msvc.*}} |
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| 16 | |
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| 17 | #include <assert.h> |
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| 18 | #include <stdlib.h> |
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| 19 | #include <stdio.h> |
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| 20 | |
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| 21 | #include <algorithm> |
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| 22 | #include <vector> |
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| 23 | |
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| 24 | int main(int argc, char **argv) { |
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| 25 | assert(argc == 3); |
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| 26 | long total_mb = atoi(nptr: argv[1]); |
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| 27 | long allocation_size = atoi(nptr: argv[2]); |
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| 28 | fprintf(stderr, format: "total_mb: %zd allocation_size: %zd\n" , total_mb, |
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| 29 | allocation_size); |
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| 30 | std::vector<char *> v; |
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| 31 | for (long total = total_mb << 20; total > 0; total -= allocation_size) |
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| 32 | v.push_back(x: new char[allocation_size]); |
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| 33 | for (std::vector<char *>::const_iterator it = v.begin(); it != v.end(); ++it) |
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| 34 | delete[](*it); |
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| 35 | fprintf(stderr, format: "PASS\n" ); |
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| 36 | // CHECK: total_mmaped{{.*}}mmap_limit_mb |
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| 37 | return 0; |
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| 38 | } |
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| 39 | |
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