derek.holloway
7502bf64a4
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58 lines
3.2 KiB
C
58 lines
3.2 KiB
C
// RUN: %clang_scudo %s -o %t
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// RUN: %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit
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// RUN: %env_scudo_opts="soft_rss_limit_mb=128" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit
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// RUN: %env_scudo_opts="hard_rss_limit_mb=128" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-nolimit
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// RUN: %env_scudo_opts="soft_rss_limit_mb=32:allocator_may_return_null=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit
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// RUN: %env_scudo_opts="soft_rss_limit_mb=32:allocator_may_return_null=1" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit-returnnull
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// RUN: %env_scudo_opts="soft_rss_limit_mb=32:allocator_may_return_null=0:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit
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// RUN: %env_scudo_opts="soft_rss_limit_mb=32:allocator_may_return_null=1:can_use_proc_maps_statm=0" %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-softlimit-returnnull
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// RUN: %env_scudo_opts="hard_rss_limit_mb=32:allocator_may_return_null=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit
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// RUN: %env_scudo_opts="hard_rss_limit_mb=32:allocator_may_return_null=1" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit
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// RUN: %env_scudo_opts="hard_rss_limit_mb=32:allocator_may_return_null=0:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit
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// RUN: %env_scudo_opts="hard_rss_limit_mb=32:allocator_may_return_null=1:can_use_proc_maps_statm=0" not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-hardlimit
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// Tests that the soft and hard RSS limits work as intended. Without limit or
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// with a high limit, the test should pass without any malloc returning NULL or
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// the program dying.
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// If a limit is specified, it should return some NULL or die depending on
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// allocator_may_return_null. This should also work without statm.
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static const size_t kNumAllocs = 64;
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static const size_t kAllocSize = 1 << 20; // 1MB.
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static void *allocs[kNumAllocs];
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int main(int argc, char *argv[]) {
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int returned_null = 0;
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for (int i = 0; i < kNumAllocs; i++) {
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// sleep for 100ms every 8 allocations, to allow the RSS check to catch up.
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if (i != 0 && (i & 0x7) == 0)
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usleep(100000);
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allocs[i] = malloc(kAllocSize);
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if (allocs[i])
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memset(allocs[i], 0xff, kAllocSize); // Dirty the pages.
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else
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returned_null++;
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}
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for (int i = 0; i < kNumAllocs; i++)
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free(allocs[i]);
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if (returned_null == 0)
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printf("All malloc calls succeeded\n");
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else
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printf("%d malloc calls returned NULL\n", returned_null);
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return 0;
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}
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// CHECK-nolimit: All malloc calls succeeded
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// CHECK-softlimit: soft RSS limit exhausted
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// CHECK-softlimit-NOT: malloc calls
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// CHECK-softlimit-returnnull: soft RSS limit exhausted
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// CHECK-softlimit-returnnull: malloc calls returned NULL
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// CHECK-hardlimit: hard RSS limit exhausted
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// CHECK-hardlimit-NOT: malloc calls
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