forked from OSchip/llvm-project
93 lines
3.0 KiB
C++
93 lines
3.0 KiB
C++
// RUN: %clangxx_scudo %s -lstdc++ -o %t
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// RUN: %run %t ownership 2>&1
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// RUN: %run %t ownership-and-size 2>&1
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// RUN: %run %t heap-size 2>&1
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// RUN: %env_scudo_opts="allocator_may_return_null=1" %run %t soft-limit 2>&1
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// RUN: %env_scudo_opts="allocator_may_return_null=1" not %run %t hard-limit 2>&1
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// Tests that the sanitizer interface functions behave appropriately.
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#include <stdlib.h>
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#include <assert.h>
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#include <string.h>
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#include <unistd.h>
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#include <vector>
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#include <sanitizer/allocator_interface.h>
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#include <sanitizer/scudo_interface.h>
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int main(int argc, char **argv)
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{
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assert(argc == 2);
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if (!strcmp(argv[1], "ownership")) {
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// Ensures that __sanitizer_get_ownership can be called before any other
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// allocator function, and that it behaves properly on a pointer not owned
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// by us.
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assert(!__sanitizer_get_ownership(argv));
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}
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if (!strcmp(argv[1], "ownership-and-size")) {
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// Tests that __sanitizer_get_ownership and __sanitizer_get_allocated_size
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// behave properly on chunks allocated by the Primary and Secondary.
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void *p;
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std::vector<ssize_t> sizes{1, 8, 16, 32, 1024, 32768,
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1 << 16, 1 << 17, 1 << 20, 1 << 24};
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for (size_t size : sizes) {
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p = malloc(size);
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assert(p);
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assert(__sanitizer_get_ownership(p));
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assert(__sanitizer_get_allocated_size(p) >= size);
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free(p);
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}
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}
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if (!strcmp(argv[1], "heap-size")) {
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// Ensures that __sanitizer_get_heap_size can be called before any other
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// allocator function.
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assert(__sanitizer_get_heap_size() >= 0);
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}
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if (!strcmp(argv[1], "soft-limit")) {
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// Verifies that setting the soft RSS limit at runtime works as expected.
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std::vector<void *> pointers;
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size_t size = 1 << 19; // 512Kb
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for (int i = 0; i < 5; i++) {
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void *p = malloc(size);
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memset(p, 0, size);
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pointers.push_back(p);
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}
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// Set the soft RSS limit to 1Mb.
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__scudo_set_rss_limit(1, 0);
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usleep(20000);
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// The following allocation should return NULL.
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void *p = malloc(size);
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assert(!p);
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// Remove the soft RSS limit.
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__scudo_set_rss_limit(0, 0);
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// The following allocation should succeed.
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p = malloc(size);
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assert(p);
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free(p);
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while (!pointers.empty()) {
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free(pointers.back());
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pointers.pop_back();
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}
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}
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if (!strcmp(argv[1], "hard-limit")) {
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// Verifies that setting the hard RSS limit at runtime works as expected.
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std::vector<void *> pointers;
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size_t size = 1 << 19; // 512Kb
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for (int i = 0; i < 5; i++) {
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void *p = malloc(size);
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memset(p, 0, size);
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pointers.push_back(p);
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}
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// Set the hard RSS limit to 1Mb
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__scudo_set_rss_limit(1, 1);
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usleep(20000);
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// The following should trigger our death.
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void *p = malloc(size);
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}
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return 0;
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}
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