1 //===- llvm/unittest/Support/ManagedStatic.cpp - ManagedStatic tests ------===//
2 //
3 // The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9
10 #include "llvm/Support/Allocator.h"
11 #include "llvm/Support/ManagedStatic.h"
12 #include "llvm/Config/config.h"
13 #ifdef HAVE_PTHREAD_H
14 #include <pthread.h>
15 #endif
16
17 #include "gtest/gtest.h"
18
19 using namespace llvm;
20
21 namespace {
22
23 #if LLVM_ENABLE_THREADS != 0 && defined(HAVE_PTHREAD_H) && \
24 !__has_feature(memory_sanitizer)
25 namespace test1 {
26 llvm::ManagedStatic<int> ms;
helper(void *)27 void *helper(void*) {
28 *ms;
29 return nullptr;
30 }
31
32 // Valgrind's leak checker complains glibc's stack allocation.
33 // To appease valgrind, we provide our own stack for each thread.
allocate_stack(pthread_attr_t & a,size_t n=65536)34 void *allocate_stack(pthread_attr_t &a, size_t n = 65536) {
35 void *stack = safe_malloc(n);
36 pthread_attr_init(&a);
37 #if defined(__linux__)
38 pthread_attr_setstack(&a, stack, n);
39 #endif
40 return stack;
41 }
42 }
43
TEST(Initialize,MultipleThreads)44 TEST(Initialize, MultipleThreads) {
45 // Run this test under tsan: http://code.google.com/p/data-race-test/
46
47 pthread_attr_t a1, a2;
48 void *p1 = test1::allocate_stack(a1);
49 void *p2 = test1::allocate_stack(a2);
50
51 pthread_t t1, t2;
52 pthread_create(&t1, &a1, test1::helper, nullptr);
53 pthread_create(&t2, &a2, test1::helper, nullptr);
54 pthread_join(t1, nullptr);
55 pthread_join(t2, nullptr);
56 free(p1);
57 free(p2);
58 }
59 #endif
60
61 namespace NestedStatics {
62 static ManagedStatic<int> Ms1;
63 struct Nest {
Nest__anon49bb3b300111::NestedStatics::Nest64 Nest() {
65 ++(*Ms1);
66 }
67
~Nest__anon49bb3b300111::NestedStatics::Nest68 ~Nest() {
69 assert(Ms1.isConstructed());
70 ++(*Ms1);
71 }
72 };
73 static ManagedStatic<Nest> Ms2;
74
TEST(ManagedStaticTest,NestedStatics)75 TEST(ManagedStaticTest, NestedStatics) {
76 EXPECT_FALSE(Ms1.isConstructed());
77 EXPECT_FALSE(Ms2.isConstructed());
78
79 *Ms2;
80 EXPECT_TRUE(Ms1.isConstructed());
81 EXPECT_TRUE(Ms2.isConstructed());
82 }
83 } // namespace NestedStatics
84
85 namespace CustomCreatorDeletor {
86 struct CustomCreate {
call__anon49bb3b300111::CustomCreatorDeletor::CustomCreate87 static void *call() {
88 void *Mem = safe_malloc(sizeof(int));
89 *((int *)Mem) = 42;
90 return Mem;
91 }
92 };
93 struct CustomDelete {
call__anon49bb3b300111::CustomCreatorDeletor::CustomDelete94 static void call(void *P) { std::free(P); }
95 };
96 static ManagedStatic<int, CustomCreate, CustomDelete> Custom;
TEST(ManagedStaticTest,CustomCreatorDeletor)97 TEST(ManagedStaticTest, CustomCreatorDeletor) {
98 EXPECT_EQ(42, *Custom);
99 }
100 } // namespace CustomCreatorDeletor
101
102 } // anonymous namespace
103