121 lines
4.4 KiB
C++
121 lines
4.4 KiB
C++
//===-- tsan_sync_test.cpp ------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "tsan_sync.h"
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#include "tsan_rtl.h"
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#include "gtest/gtest.h"
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namespace __tsan {
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TEST(MetaMap, Basic) {
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ThreadState *thr = cur_thread();
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MetaMap *m = &ctx->metamap;
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u64 block[1] = {}; // fake malloc block
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m->AllocBlock(thr, 0, (uptr)&block[0], 1 * sizeof(u64));
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MBlock *mb = m->GetBlock((uptr)&block[0]);
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EXPECT_NE(mb, (MBlock*)0);
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EXPECT_EQ(mb->siz, 1 * sizeof(u64));
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EXPECT_EQ(mb->tid, thr->tid);
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uptr sz = m->FreeBlock(thr->proc(), (uptr)&block[0]);
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EXPECT_EQ(sz, 1 * sizeof(u64));
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mb = m->GetBlock((uptr)&block[0]);
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EXPECT_EQ(mb, (MBlock*)0);
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}
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TEST(MetaMap, FreeRange) {
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ThreadState *thr = cur_thread();
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MetaMap *m = &ctx->metamap;
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u64 block[4] = {}; // fake malloc block
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m->AllocBlock(thr, 0, (uptr)&block[0], 1 * sizeof(u64));
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m->AllocBlock(thr, 0, (uptr)&block[1], 3 * sizeof(u64));
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MBlock *mb1 = m->GetBlock((uptr)&block[0]);
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EXPECT_EQ(mb1->siz, 1 * sizeof(u64));
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MBlock *mb2 = m->GetBlock((uptr)&block[1]);
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EXPECT_EQ(mb2->siz, 3 * sizeof(u64));
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m->FreeRange(thr->proc(), (uptr)&block[0], 4 * sizeof(u64));
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mb1 = m->GetBlock((uptr)&block[0]);
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EXPECT_EQ(mb1, (MBlock*)0);
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mb2 = m->GetBlock((uptr)&block[1]);
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EXPECT_EQ(mb2, (MBlock*)0);
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}
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TEST(MetaMap, Sync) {
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// EXPECT can call memset/etc. Disable interceptors to prevent
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// them from detecting that we exit runtime with mutexes held.
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ScopedIgnoreInterceptors ignore;
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ThreadState *thr = cur_thread();
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MetaMap *m = &ctx->metamap;
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u64 block[4] = {}; // fake malloc block
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m->AllocBlock(thr, 0, (uptr)&block[0], 4 * sizeof(u64));
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SyncVar *s1 = m->GetSyncIfExists((uptr)&block[0]);
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EXPECT_EQ(s1, (SyncVar*)0);
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s1 = m->GetSyncOrCreate(thr, 0, (uptr)&block[0], false);
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EXPECT_NE(s1, (SyncVar*)0);
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EXPECT_EQ(s1->addr, (uptr)&block[0]);
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SyncVar *s2 = m->GetSyncOrCreate(thr, 0, (uptr)&block[1], false);
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EXPECT_NE(s2, (SyncVar*)0);
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EXPECT_EQ(s2->addr, (uptr)&block[1]);
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m->FreeBlock(thr->proc(), (uptr)&block[0]);
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s1 = m->GetSyncIfExists((uptr)&block[0]);
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EXPECT_EQ(s1, (SyncVar*)0);
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s2 = m->GetSyncIfExists((uptr)&block[1]);
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EXPECT_EQ(s2, (SyncVar*)0);
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m->OnProcIdle(thr->proc());
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}
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TEST(MetaMap, MoveMemory) {
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ScopedIgnoreInterceptors ignore;
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ThreadState *thr = cur_thread();
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MetaMap *m = &ctx->metamap;
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u64 block1[4] = {}; // fake malloc block
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u64 block2[4] = {}; // fake malloc block
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m->AllocBlock(thr, 0, (uptr)&block1[0], 3 * sizeof(u64));
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m->AllocBlock(thr, 0, (uptr)&block1[3], 1 * sizeof(u64));
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SyncVar *s1 = m->GetSyncOrCreate(thr, 0, (uptr)&block1[0], false);
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SyncVar *s2 = m->GetSyncOrCreate(thr, 0, (uptr)&block1[1], false);
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m->MoveMemory((uptr)&block1[0], (uptr)&block2[0], 4 * sizeof(u64));
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MBlock *mb1 = m->GetBlock((uptr)&block1[0]);
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EXPECT_EQ(mb1, (MBlock*)0);
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MBlock *mb2 = m->GetBlock((uptr)&block1[3]);
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EXPECT_EQ(mb2, (MBlock*)0);
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mb1 = m->GetBlock((uptr)&block2[0]);
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EXPECT_NE(mb1, (MBlock*)0);
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EXPECT_EQ(mb1->siz, 3 * sizeof(u64));
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mb2 = m->GetBlock((uptr)&block2[3]);
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EXPECT_NE(mb2, (MBlock*)0);
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EXPECT_EQ(mb2->siz, 1 * sizeof(u64));
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s1 = m->GetSyncIfExists((uptr)&block1[0]);
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EXPECT_EQ(s1, (SyncVar*)0);
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s2 = m->GetSyncIfExists((uptr)&block1[1]);
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EXPECT_EQ(s2, (SyncVar*)0);
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s1 = m->GetSyncIfExists((uptr)&block2[0]);
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EXPECT_NE(s1, (SyncVar*)0);
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EXPECT_EQ(s1->addr, (uptr)&block2[0]);
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s2 = m->GetSyncIfExists((uptr)&block2[1]);
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EXPECT_NE(s2, (SyncVar*)0);
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EXPECT_EQ(s2->addr, (uptr)&block2[1]);
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m->FreeRange(thr->proc(), (uptr)&block2[0], 4 * sizeof(u64));
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}
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TEST(MetaMap, ResetSync) {
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ScopedIgnoreInterceptors ignore;
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ThreadState *thr = cur_thread();
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MetaMap *m = &ctx->metamap;
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u64 block[1] = {}; // fake malloc block
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m->AllocBlock(thr, 0, (uptr)&block[0], 1 * sizeof(u64));
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SyncVar *s = m->GetSyncOrCreate(thr, 0, (uptr)&block[0], false);
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s->Reset(thr->proc());
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uptr sz = m->FreeBlock(thr->proc(), (uptr)&block[0]);
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EXPECT_EQ(sz, 1 * sizeof(u64));
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}
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} // namespace __tsan
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