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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/testapp.h>
#include <vespa/vespalib/stllike/string.h>
#include <vespa/searchlib/util/statefile.h>
#include <vespa/searchlib/util/sigbushandler.h>
#include <iostream>
#include <fstream>
#include <vespa/searchlib/test/statefile.h>
#include <vespa/searchlib/test/statestring.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <vespa/log/log.h>
LOG_SETUP("sigbushandler_test");
using namespace search::test::statefile;
using namespace search::test::statestring;
namespace search
{
using strvec = std::vector<vespalib::string>;
namespace
{
bool
assertHistory(std::vector<vespalib::string> &exp,
std::vector<vespalib::string> &act)
{
if (!EXPECT_EQUAL(exp.size(), act.size())) {
return false;
}
for (size_t i = 0; i < exp.size(); ++i) {
if (!EXPECT_EQUAL(exp[i], act[i])) {
return false;
}
}
return true;
}
}
TEST("Test that sigbus handler can be instantated")
{
StateFile::erase("state");
StateFile sf("state");
SigBusHandler sbh(&sf);
EXPECT_FALSE(sbh.fired());
}
TEST("Test that sigbus handler can trap synthetic sigbus")
{
StateFile::erase("state");
StateFile sf("state");
SigBusHandler sbh(&sf);
EXPECT_FALSE(sbh.fired());
sigjmp_buf sjb;
if (sigsetjmp(sjb, 1) == 0) {
sbh.setUnwind(&sjb);
kill(getpid(), SIGBUS);
LOG_ABORT("Should never get here");
}
EXPECT_TRUE(sbh.fired());
#ifdef __APPLE__
vespalib::string exp_state = "state=down ts=0.0 operation=sigbus errno=0 code=2 addr=0x0000000000000000\n";
#else
vespalib::string exp_state = "state=down ts=0.0 operation=sigbus errno=0 code=0\n";
#endif
{
vespalib::string act = readState(sf);
normalizeTimestamp(act);
normalizeAddr(act, nullptr);
EXPECT_EQUAL(exp_state, act);
}
{
strvec exp({exp_state});
std::vector<vespalib::string> act(readHistory("state.history"));
normalizeTimestamps(act);
normalizeAddrs(act, nullptr);
TEST_DO(assertHistory(exp, act));
}
}
TEST("Test that sigbus handler can trap normal sigbus")
{
StateFile::erase("state");
StateFile sf("state");
SigBusHandler sbh(&sf);
EXPECT_FALSE(sbh.fired());
int fd = open("mmapfile", O_CREAT | O_TRUNC | O_RDWR, 0644);
assert(fd >= 0);
void *mmapres = mmap(nullptr, 4096, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
assert(mmapres != nullptr);
assert(mmapres != reinterpret_cast<void *>(-1l));
char *p = reinterpret_cast<char *>(mmapres) + 42;
volatile char r = 0;
sigjmp_buf sjb;
if (sigsetjmp(sjb, 1) == 0) {
sbh.setUnwind(&sjb);
r = *p;
LOG_ABORT("Should never get here");
}
EXPECT_TRUE(sbh.fired());
EXPECT_TRUE(r == '\0');
{
vespalib::string act = readState(sf);
vespalib::string exp ="state=down ts=0.0 operation=sigbus errno=0 "
"code=2 addr=0x0000000000000000\n";
normalizeAddr(exp, p);
normalizeTimestamp(act);
EXPECT_EQUAL(exp, act);
}
{
strvec exp({"state=down ts=0.0 operation=sigbus errno=0 code=2 "
"addr=0x0000000000000000\n" });
normalizeAddrs(exp, p);
std::vector<vespalib::string> act(readHistory("state.history"));
normalizeTimestamps(act);
TEST_DO(assertHistory(exp, act));
}
}
}
TEST_MAIN()
{
TEST_RUN_ALL();
search::StateFile::erase("state");
unlink("mmapfile");
}
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