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| //===- llvm/unittest/Support/ManagedStatic.cpp - ManagedStatic tests ------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Allocator.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Config/config.h"
#ifdef HAVE_PTHREAD_H
#include <pthread.h>
#endif
#include "gtest/gtest.h"
using namespace llvm;
namespace {
#if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \
!__has_feature(memory_sanitizer)
namespace test1 {
llvm::ManagedStatic<int> ms;
void *helper(void*) {
*ms;
return nullptr;
}
// Valgrind's leak checker complains glibc's stack allocation.
// To appease valgrind, we provide our own stack for each thread.
void *allocate_stack(pthread_attr_t &a, size_t n = 65536) {
void *stack = safe_malloc(n);
pthread_attr_init(&a);
#if defined(__linux__)
pthread_attr_setstack(&a, stack, n);
#endif
return stack;
}
}
TEST(Initialize, MultipleThreads) {
// Run this test under tsan: http://code.google.com/p/data-race-test/
pthread_attr_t a1, a2;
void *p1 = test1::allocate_stack(a1);
void *p2 = test1::allocate_stack(a2);
pthread_t t1, t2;
pthread_create(&t1, &a1, test1::helper, nullptr);
pthread_create(&t2, &a2, test1::helper, nullptr);
pthread_join(t1, nullptr);
pthread_join(t2, nullptr);
free(p1);
free(p2);
}
#endif
namespace NestedStatics {
static ManagedStatic<int> Ms1;
struct Nest {
Nest() {
++(*Ms1);
}
~Nest() {
assert(Ms1.isConstructed());
++(*Ms1);
}
};
static ManagedStatic<Nest> Ms2;
TEST(ManagedStaticTest, NestedStatics) {
EXPECT_FALSE(Ms1.isConstructed());
EXPECT_FALSE(Ms2.isConstructed());
*Ms2;
EXPECT_TRUE(Ms1.isConstructed());
EXPECT_TRUE(Ms2.isConstructed());
}
} // namespace NestedStatics
namespace CustomCreatorDeletor {
struct CustomCreate {
static void *call() {
void *Mem = safe_malloc(sizeof(int));
*((int *)Mem) = 42;
return Mem;
}
};
struct CustomDelete {
static void call(void *P) { std::free(P); }
};
static ManagedStatic<int, CustomCreate, CustomDelete> Custom;
TEST(ManagedStaticTest, CustomCreatorDeletor) {
EXPECT_EQ(42, *Custom);
}
} // namespace CustomCreatorDeletor
} // anonymous namespace
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