forked from OSchip/llvm-project
58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
// RUN: %clang_scudo %s -o %t
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// RUN: SCUDO_OPTIONS="QuarantineSizeMb=0:ThreadLocalQuarantineSizeKb=0" %run %t zeroquarantine 2>&1
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// RUN: SCUDO_OPTIONS=QuarantineSizeMb=1 %run %t smallquarantine 2>&1
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// Tests that the quarantine prevents a chunk from being reused right away.
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// Also tests that a chunk will eventually become available again for
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// allocation when the recycling criteria has been met.
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#include <assert.h>
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#include <malloc.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sanitizer/allocator_interface.h>
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int main(int argc, char **argv)
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{
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void *p, *old_p;
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size_t allocated_bytes, size = 1U << 16;
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assert(argc == 2);
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if (!strcmp(argv[1], "zeroquarantine")) {
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// Verifies that a chunk is deallocated right away when the local and
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// global quarantine sizes are 0.
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allocated_bytes = __sanitizer_get_current_allocated_bytes();
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p = malloc(size);
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assert(p);
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assert(__sanitizer_get_current_allocated_bytes() > allocated_bytes);
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free(p);
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assert(__sanitizer_get_current_allocated_bytes() == allocated_bytes);
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}
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if (!strcmp(argv[1], "smallquarantine")) {
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// The delayed freelist will prevent a chunk from being available right
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// away.
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p = malloc(size);
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assert(p);
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old_p = p;
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free(p);
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p = malloc(size);
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assert(p);
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assert(old_p != p);
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free(p);
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// Eventually the chunk should become available again.
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bool found = false;
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for (int i = 0; i < 0x100 && found == false; i++) {
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p = malloc(size);
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assert(p);
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found = (p == old_p);
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free(p);
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}
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assert(found == true);
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}
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return 0;
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}
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