std::string current_executable_directory() {
#if defined(__linux__) || defined(__APPLE__) || defined(__FreeBSD__)
std::string path = current_executable_path();
return path.substr(0, path.find_last_of("/"));
#else
// XXX: How do you do this on your platform?
return std::string();
#endif
}
bool get_embedded_data(const char* section, embedded_data* desc,
const std::string& filename /*= "" */) {
auto const fname = filename.empty() ? current_executable_path() : filename;
#if defined(__CYGWIN__) || defined(__MINGW__) || defined(_MSC_VER)
HMODULE moduleHandle = GetModuleHandleA(fname.data());
HGLOBAL loadedResource;
HRSRC resourceInfo;
DWORD resourceSize;
resourceInfo = FindResource(moduleHandle, section, RT_RCDATA);
if (!resourceInfo) {
return false;
}
loadedResource = LoadResource(moduleHandle, resourceInfo);
if (!loadedResource) {
return false;
}
resourceSize = SizeofResource(moduleHandle, resourceInfo);
desc->m_filename = fname;
desc->m_handle = loadedResource;
desc->m_len = resourceSize;
return true;
#elif !defined(__APPLE__) // LINUX/ELF
folly::symbolizer::ElfFile file;
if (file.openNoThrow(fname.c_str()) != 0) return false;
auto const shdr = file.getSectionByName(section);
if (shdr == nullptr) return false;
desc->m_filename = fname;
desc->m_start = shdr->sh_offset;
desc->m_len = shdr->sh_size;
return true;
#else // __APPLE__
const struct section_64 *sect = getsectbyname("__text", section);
if (sect) {
desc->m_filename = fname;
desc->m_start = sect->offset;
desc->m_len = sect->size;
return !desc->m_filename.empty();
}
#endif // __APPLE__
return false;
}
void HeapProfileRequestHandler::handleRequest(Transport *transport) {
const char *url = transport->getCommand().c_str();
if (!strcmp(url, "hhprof/start")) {
// if we can place the request, send a 200
if (handleStartRequest(transport)) {
transport->sendString("OK\n", 200);
} else {
transport->sendString("Resource Unavailable\n", 503);
}
} else if (!strcmp(url, "pprof/cmdline")) {
// the first thing pprof does when you call the script is find out
// the name of the binary running on the remote server
transport->sendString(current_executable_path(), 200);
} else if (!strcmp(url, "pprof/heap")) {
// the next thing pprof does is hit this endpoint and get a profile
// dump
ProfileController::waitForProfile([&](const ProfileDump& dump) {
transport->sendString(dump.toPProfFormat(), 200);
});
} else if (!strcmp(url, "pprof/symbol")) {
// lastly, pprof hits this endpoint three times. the first time, it
// hits with a HEAD request, which gives it some knowledge as to the
// presence of the endpoint. then it hits with a GET request, and
// expects the number of defined symbols in response. finally, it
// hits with a POST request, with the POST data being a plus-separated
// list of addresses for which it wants symbols
if (transport->getMethod() == Transport::Method::HEAD) {
transport->sendString("OK\n", 200);
} else if (transport->getMethod() == Transport::Method::GET) {
// actual number of sumbols is not really relevant
// from the pprof documentation, pprof only considers values
// that are either zero or non-zero
transport->sendString("num_symbols: 1\n", 200);
} else if (transport->getMethod() == Transport::Method::POST) {
// split the post data by '+' character and resolve the symbol
// for each
int size;
auto data = static_cast<const char *>(transport->getPostData(size));
std::string res;
std::vector<folly::StringPiece> addrs;
folly::split('+', folly::StringPiece(data, size), addrs);
for (const auto &addr : addrs) {
// for each address we get from pprof, it expects a line formatted
// like the following
// <address>\t<symbol name>
if (!addr.size()) {
continue;
}
std::string val(addr.data(), addr.size());
SrcKey sk = SrcKey::fromAtomicInt(
static_cast<uint64_t>(std::stoll(val, 0, 16))
);
folly::toAppend(addr, "\t", sk.getSymbol(), "\n", &res);
}
transport->sendString(res, 200);
if (RuntimeOption::ClientExecutionMode() &&
RuntimeOption::HHProfServerProfileClientMode) {
std::unique_lock<std::mutex> lock(s_clientMutex);
s_cond = true;
s_clientWaitq.notify_all();
}
}
} else if (!strcmp(url, "hhprof/stop")) {
// user has requested cancellation of the current profile dump
ProfileController::cancelRequest();
transport->sendString("OK\n", 200);
} else {
// the pprof server doesn't understand any other endpoints so just error
// out
Logger::Warning(folly::format(
"Unknown HHProf endpoint requested, command was: {}", url
).str());
transport->sendString("Not Found\n", 404);
}
}
void StandardExtension::initMisc() {
HHVM_FALIAS(HH\\server_warmup_status, server_warmup_status);
HHVM_FE(connection_aborted);
HHVM_FE(connection_status);
HHVM_FE(connection_timeout);
HHVM_FE(constant);
HHVM_FE(define);
HHVM_FE(defined);
HHVM_FE(ignore_user_abort);
HHVM_FE(pack);
HHVM_FE(sleep);
HHVM_FE(usleep);
HHVM_FE(time_nanosleep);
HHVM_FE(time_sleep_until);
HHVM_FE(uniqid);
HHVM_FE(unpack);
HHVM_FE(sys_getloadavg);
HHVM_FE(token_get_all);
HHVM_FE(token_name);
HHVM_FE(hphp_to_string);
HHVM_FALIAS(__SystemLib\\max2, SystemLib_max2);
HHVM_FALIAS(__SystemLib\\min2, SystemLib_min2);
HHVM_RC_INT(PHP_MAXPATHLEN, PATH_MAX);
Native::registerConstant<KindOfBoolean>(makeStaticString("PHP_DEBUG"),
#if DEBUG
true
#else
false
#endif
);
bindTokenConstants();
HHVM_RC_INT(T_PAAMAYIM_NEKUDOTAYIM, get_user_token_id(T_DOUBLE_COLON));
HHVM_RC_INT(UPLOAD_ERR_OK, 0);
HHVM_RC_INT(UPLOAD_ERR_INI_SIZE, 1);
HHVM_RC_INT(UPLOAD_ERR_FORM_SIZE, 2);
HHVM_RC_INT(UPLOAD_ERR_PARTIAL, 3);
HHVM_RC_INT(UPLOAD_ERR_NO_FILE, 4);
HHVM_RC_INT(UPLOAD_ERR_NO_TMP_DIR, 6);
HHVM_RC_INT(UPLOAD_ERR_CANT_WRITE, 7);
HHVM_RC_INT(UPLOAD_ERR_EXTENSION, 8);
HHVM_RC_INT(CREDITS_GROUP, 1 << 0);
HHVM_RC_INT(CREDITS_GENERAL, 1 << 1);
HHVM_RC_INT(CREDITS_SAPI, 1 << 2);
HHVM_RC_INT(CREDITS_MODULES, 1 << 3);
HHVM_RC_INT(CREDITS_DOCS, 1 << 4);
HHVM_RC_INT(CREDITS_FULLPAGE, 1 << 5);
HHVM_RC_INT(CREDITS_QA, 1 << 6);
HHVM_RC_INT(CREDITS_ALL, 0xFFFFFFFF);
HHVM_RC_INT(INI_SYSTEM, IniSetting::PHP_INI_SYSTEM);
HHVM_RC_INT(INI_PERDIR, IniSetting::PHP_INI_PERDIR);
HHVM_RC_INT(INI_USER, IniSetting::PHP_INI_USER);
HHVM_RC_INT(INI_ALL, IniSetting::PHP_INI_SYSTEM |
IniSetting::PHP_INI_PERDIR |
IniSetting::PHP_INI_USER);
HHVM_RC_STR(PHP_BINARY, current_executable_path());
HHVM_RC_STR(PHP_BINDIR, current_executable_directory());
HHVM_RC_STR(PHP_OS, HHVM_FN(php_uname)("s").toString().toCppString());
HHVM_RC_STR(PHP_SAPI, RuntimeOption::ExecutionMode);
HHVM_RC_INT(PHP_INT_SIZE, sizeof(int64_t));
HHVM_RC_INT(PHP_INT_MIN, k_PHP_INT_MIN);
HHVM_RC_INT(PHP_INT_MAX, k_PHP_INT_MAX);
HHVM_RC_INT_SAME(PHP_MAJOR_VERSION);
HHVM_RC_INT_SAME(PHP_MINOR_VERSION);
HHVM_RC_INT_SAME(PHP_RELEASE_VERSION);
HHVM_RC_STR_SAME(PHP_EXTRA_VERSION);
HHVM_RC_STR_SAME(PHP_VERSION);
HHVM_RC_INT_SAME(PHP_VERSION_ID);
// FIXME: These values are hardcoded from their previous IDL values
// Grab their correct values from the system as appropriate
HHVM_RC_STR(PHP_EOL, "\n");
HHVM_RC_STR(PHP_CONFIG_FILE_PATH, "");
HHVM_RC_STR(PHP_CONFIG_FILE_SCAN_DIR, "");
HHVM_RC_STR(PHP_DATADIR, "");
HHVM_RC_STR(PHP_EXTENSION_DIR, "");
HHVM_RC_STR(PHP_LIBDIR, "");
HHVM_RC_STR(PHP_LOCALSTATEDIR, "");
HHVM_RC_STR(PHP_PREFIX, "");
HHVM_RC_STR(PHP_SHLIB_SUFFIX, "so");
HHVM_RC_STR(PHP_SYSCONFDIR, "");
HHVM_RC_STR(PEAR_EXTENSION_DIR, "");
HHVM_RC_STR(PEAR_INSTALL_DIR, "");
loadSystemlib("std_misc");
}
void DebugInfo::generatePidMapOverlay() {
if (!m_perfMap || !pidMapOverlayStart) return;
std::string self = current_executable_path();
bfd* abfd = bfd_openr(self.c_str(), nullptr);
#ifdef BFD_DECOMPRESS
abfd->flags |= BFD_DECOMPRESS;
#endif
char **match = nullptr;
if (!bfd_check_format(abfd, bfd_archive) &&
bfd_check_format_matches(abfd, bfd_object, &match)) {
std::vector<asymbol*> sorted;
long storage_needed = bfd_get_symtab_upper_bound (abfd);
if (storage_needed <= 0) return;
auto symbol_table = (asymbol**)malloc(storage_needed);
long number_of_symbols = bfd_canonicalize_symtab(abfd, symbol_table);
for (long i = 0; i < number_of_symbols; i++) {
auto sym = symbol_table[i];
if (sym->flags &
(BSF_INDIRECT |
BSF_SECTION_SYM |
BSF_FILE |
BSF_DEBUGGING_RELOC |
BSF_OBJECT)) {
continue;
}
auto sec = sym->section;
if (!(sec->flags & (SEC_ALLOC|SEC_LOAD|SEC_CODE))) continue;
auto addr = sec->vma + sym->value;
if (addr < uintptr_t(pidMapOverlayStart) ||
addr >= uintptr_t(pidMapOverlayEnd)) {
continue;
}
sorted.push_back(sym);
}
std::sort(sorted.begin(), sorted.end(), [](asymbol* a, asymbol* b) {
auto addra = a->section->vma + a->value;
auto addrb = b->section->vma + b->value;
if (addra != addrb) return addra < addrb;
return strncmp("_ZN4HPHP", a->name, 8) &&
!strncmp("_ZN4HPHP", b->name, 8);
});
for (size_t i = 0; i < sorted.size(); i++) {
auto sym = sorted[i];
auto addr = sym->section->vma + sym->value;
int status;
char* demangled =
abi::__cxa_demangle(sym->name, nullptr, nullptr, &status);
if (status != 0) demangled = const_cast<char*>(sym->name);
unsigned size;
if (i + 1 < sorted.size()) {
auto s2 = sorted[i + 1];
size = s2->section->vma + s2->value - addr;
} else {
size = uintptr_t(pidMapOverlayEnd) - addr;
}
if (!size) continue;
fprintf(m_perfMap, "%lx %x %s\n",
long(addr), size, demangled);
if (status == 0) free(demangled);
}
free(symbol_table);
free(match);
}
bfd_close(abfd);
return;
}
void StandardExtension::initMisc() {
HHVM_FALIAS(HH\\server_warmup_status, server_warmup_status);
HHVM_FE(connection_aborted);
HHVM_FE(connection_status);
HHVM_FE(connection_timeout);
HHVM_FE(constant);
HHVM_FE(define);
HHVM_FE(defined);
HHVM_FE(ignore_user_abort);
HHVM_FE(pack);
HHVM_FE(sleep);
HHVM_FE(usleep);
HHVM_FE(time_nanosleep);
HHVM_FE(time_sleep_until);
HHVM_FE(uniqid);
HHVM_FE(unpack);
HHVM_FE(sys_getloadavg);
HHVM_FE(token_get_all);
HHVM_FE(token_name);
HHVM_FE(hphp_to_string);
HHVM_FALIAS(__SystemLib\\max2, SystemLib_max2);
HHVM_FALIAS(__SystemLib\\min2, SystemLib_min2);
Native::registerConstant<KindOfDouble>(makeStaticString("INF"), k_INF);
Native::registerConstant<KindOfDouble>(makeStaticString("NAN"), k_NAN);
Native::registerConstant<KindOfInt64>(
makeStaticString("PHP_MAXPATHLEN"), MAXPATHLEN);
Native::registerConstant<KindOfBoolean>(makeStaticString("PHP_DEBUG"),
#if DEBUG
true
#else
false
#endif
);
bindTokenConstants();
Native::registerConstant<KindOfInt64>(s_T_PAAMAYIM_NEKUDOTAYIM.get(),
get_user_token_id(T_DOUBLE_COLON));
HHVM_RC_STR(PHP_BINARY, current_executable_path());
HHVM_RC_STR(PHP_BINDIR, current_executable_directory());
HHVM_RC_STR(PHP_OS, HHVM_FN(php_uname)("s").toString().toCppString());
HHVM_RC_STR(PHP_SAPI, RuntimeOption::ExecutionMode);
HHVM_RC_INT(PHP_INT_SIZE, sizeof(int64_t));
HHVM_RC_INT(PHP_INT_MIN, k_PHP_INT_MIN);
HHVM_RC_INT(PHP_INT_MAX, k_PHP_INT_MAX);
HHVM_RC_INT_SAME(PHP_MAJOR_VERSION);
HHVM_RC_INT_SAME(PHP_MINOR_VERSION);
HHVM_RC_INT_SAME(PHP_RELEASE_VERSION);
HHVM_RC_STR_SAME(PHP_EXTRA_VERSION);
HHVM_RC_STR_SAME(PHP_VERSION);
HHVM_RC_INT_SAME(PHP_VERSION_ID);
// FIXME: These values are hardcoded from their previous IDL values
// Grab their correct values from the system as appropriate
HHVM_RC_STR(PHP_EOL, "\n");
HHVM_RC_STR(PHP_CONFIG_FILE_PATH, "");
HHVM_RC_STR(PHP_CONFIG_FILE_SCAN_DIR, "");
HHVM_RC_STR(PHP_DATADIR, "");
HHVM_RC_STR(PHP_EXTENSION_DIR, "");
HHVM_RC_STR(PHP_LIBDIR, "");
HHVM_RC_STR(PHP_LOCALSTATEDIR, "");
HHVM_RC_STR(PHP_PREFIX, "");
HHVM_RC_STR(PHP_SHLIB_SUFFIX, "so");
HHVM_RC_STR(PHP_SYSCONFDIR, "");
HHVM_RC_STR(PEAR_EXTENSION_DIR, "");
HHVM_RC_STR(PEAR_INSTALL_DIR, "");
loadSystemlib("std_misc");
}