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125 lines
4.6 KiB
125 lines
4.6 KiB
// RUN: %clang_scudo %s -o %t
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// RUN: %env_scudo_opts="QuarantineSizeMb=1:QuarantineSizeKb=64" not %run %t unused 2>&1
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// RUN: %env_scudo_opts="QuarantineSizeMb=1:QuarantineChunksUpToSize=256" not %run %t unused 2>&1
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// RUN: %env_scudo_opts="QuarantineSizeKb=0:ThreadLocalQuarantineSizeKb=0" %run %t zeroquarantine 2>&1
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// RUN: %env_scudo_opts=QuarantineSizeKb=64 %run %t smallquarantine 2>&1
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// RUN: %env_scudo_opts=QuarantineChunksUpToSize=256 %run %t threshold 2>&1
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// RUN: %env_scudo_opts="QuarantineSizeMb=1" %run %t oldquarantine 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. Finally, tests the
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// threshold up to which a chunk is quarantine, and the old quarantine behavior.
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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 << 8, alignment = 1U << 8;
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assert(argc == 2);
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// First, warm up the allocator for the classes used.
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p = malloc(size);
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assert(p);
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free(p);
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p = malloc(size + 1);
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assert(p);
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free(p);
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assert(posix_memalign(&p, alignment, size) == 0);
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assert(p);
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free(p);
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assert(posix_memalign(&p, alignment, size + 1) == 0);
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assert(p);
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free(p);
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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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char found = 0;
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for (int i = 0; i < 0x200 && !found; 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);
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}
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if (!strcmp(argv[1], "threshold")) {
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// Verifies that a chunk of size greater than the threshold will be freed
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// right away. Alignment has no impact on the threshold.
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allocated_bytes = __sanitizer_get_current_allocated_bytes();
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p = malloc(size + 1);
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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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assert(posix_memalign(&p, alignment, size + 1) == 0);
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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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// Verifies that a chunk of size lower or equal to the threshold will be
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// quarantined.
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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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allocated_bytes = __sanitizer_get_current_allocated_bytes();
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assert(posix_memalign(&p, alignment, size) == 0);
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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], "oldquarantine")) {
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// Verifies that we quarantine everything if the deprecated quarantine
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// option is specified. Alignment has no impact on the threshold.
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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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allocated_bytes = __sanitizer_get_current_allocated_bytes();
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assert(posix_memalign(&p, alignment, size) == 0);
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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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// Secondary backed allocation.
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allocated_bytes = __sanitizer_get_current_allocated_bytes();
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p = malloc(1U << 19);
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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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return 0;
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}
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