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