bsimmers
93 linhas
2.9 KiB
C++
93 linhas
2.9 KiB
C++
/*
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+----------------------------------------------------------------------+
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| HipHop for PHP |
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+----------------------------------------------------------------------+
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| Copyright (c) 2010- Facebook, Inc. (http://www.facebook.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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*/
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#include "hphp/runtime/vm/jit/fixup.h"
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#include "gtest/gtest.h"
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#include "hphp/hhvm/process_init.h"
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namespace HPHP { namespace Transl {
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//////////////////////////////////////////////////////////////////////
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namespace {
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constexpr int kNumReaders = 7;
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constexpr int kNumToCheck = 50 * 1000;
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constexpr int kSpMul = 13;
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constexpr int kPcMul = 17;
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void* writer(void* that) {
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// Give the readers time to wind up.
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usleep(1000);
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FixupMap* m = (FixupMap*)that;
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for (int i = 1; i < kNumToCheck; i++) {
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Fixup fxp(kPcMul * i, kSpMul * i);
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m->recordFixup(TCA(uintptr_t(i)), fxp);
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}
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return nullptr;
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}
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void* reader(void* that) {
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FixupMap* m = (FixupMap*)that;
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const StringData* sd = StringData::GetStaticString("test");
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// ar2: a mock actrec, requires a Func, which can't be builtin.
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Unit u;
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Func f(u, 1, 1, 1, 0, 0, sd, AttrNone, true, nullptr, 0, false);
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ActRec ar2;
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ar2.m_savedRip = 0xdeadbeef;
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ar2.m_savedRbp = 0;
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ar2.m_func = &f;
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for (int i = 1; i < kNumToCheck; i++) {
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// ar1(i) -> ar2(DONTCARE) -> NULL
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ActRec ar1;
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ar1.m_savedRbp = (uint64_t)&ar2;
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ar1.m_savedRip = i;
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FixupMap::VMRegs vmr = { 0, 0, 0 };
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while (!m->getFrameRegs(&ar1, 0, &vmr)) {
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// Has to succeed eventually.
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}
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assert(vmr.m_pc == u.entry() + i * kPcMul);
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assert(vmr.m_fp == &ar2);
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assert(vmr.m_sp == (TypedValue*)&ar2 - i * kSpMul);
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}
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return nullptr;
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}
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}
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//////////////////////////////////////////////////////////////////////
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/*
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* Hammer a fixup map with a bunch of concurrent readers and hope it
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* works.
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*/
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TEST(FixupMap, Concurrent) {
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FixupMap m;
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void* vm = (void*)&m;
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pthread_t threads[kNumReaders];
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for (int i = 0; i < kNumReaders; i++) {
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pthread_create(&threads[i], nullptr, reader, vm);
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}
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writer(vm);
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for (int i = 0; i < kNumReaders; i++) {
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pthread_join(threads[i], nullptr);
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}
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}
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//////////////////////////////////////////////////////////////////////
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}}
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