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//=-- lsan.cc -------------------------------------------------------------===//
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of LeakSanitizer.
// Standalone LSan RTL.
//
//===----------------------------------------------------------------------===//
#include "lsan.h"
#include "sanitizer_common/sanitizer_flags.h"
#include "sanitizer_common/sanitizer_flag_parser.h"
#include "sanitizer_common/sanitizer_stacktrace.h"
#include "sanitizer_common/sanitizer_libc.h"
#include "lsan_allocator.h"
#include "lsan_common.h"
#include "lsan_thread.h"
bool lsan_inited;
bool lsan_init_is_running;
namespace __lsan {
///// Interface to the common LSan module. /////
bool WordIsPoisoned(uptr addr) {
return false;
}
#if LSAN_DYNAMIC
// Initialize runtime in case it's LD_PRELOAD-ed into unsanitized executable
// (and thus normal initializers from .preinit_array or modules haven't run).
class LsanInitializer {
public: // NOLINT
LsanInitializer() {
__lsan_init();
}
};
static LsanInitializer lsan_initializer;
#endif // LSAN_DYNAMIC
} // namespace __lsan
using namespace __lsan; // NOLINT
static void InitializeFlags() {
// Set all the default values.
SetCommonFlagsDefaults();
{
CommonFlags cf;
cf.CopyFrom(*common_flags());
cf.external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
cf.malloc_context_size = 30;
cf.detect_leaks = false;
cf.exitcode = 0;
OverrideCommonFlags(cf);
}
Flags *f = flags();
f->SetDefaults();
FlagParser parser;
RegisterLsanFlags(&parser, f);
RegisterCommonFlags(&parser);
int mmaped = 0;
const char *options =
GetRuntimeOptions("LSAN_OPTIONS", "/LSAN_OPTIONS", &mmaped);
parser.ParseString(options);
SetVerbosity(common_flags()->verbosity);
if (Verbosity()) ReportUnrecognizedFlags();
if (common_flags()->help) parser.PrintFlagDescriptions();
__sanitizer_set_report_path(common_flags()->log_path);
if (mmaped)
UnmapOrDie((void *)options, GetPageSizeCached());
}
extern "C" void __lsan_init() {
CHECK(!lsan_init_is_running);
if (LIKELY(lsan_inited))
return;
SanitizerToolName = "LeakSanitizer";
MaybeMountProcFS();
lsan_init_is_running = true;
CacheBinaryName();
InitializeFlags();
InitCommonLsan();
InitializeAllocator();
InitTlsSize();
InitializeInterceptors();
InitializeThreadRegistry();
u32 tid = ThreadCreate(0, 0, true);
CHECK_EQ(tid, 0);
ThreadStart(tid, GetTid());
SetCurrentThread(tid);
if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
Atexit(DoLeakCheck);
InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
lsan_inited = true;
lsan_init_is_running = false;
}
extern "C" SANITIZER_INTERFACE_ATTRIBUTE
void __sanitizer_print_stack_trace() {
GET_STACK_TRACE_FATAL;
stack.Print();
}
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