5535c51606
Summary: We have a way to keep track of allocated DTLS segments: let's use it in LSan. Although this code is fragile and relies on glibc implementation details, in some cases it proves to be better than existing way of tracking DTLS in LSan: marking as "reachable" all memory chunks allocated directly by "ld". The plan is to eventually get rid of the latter, once we are sure it's safe to remove. Reviewers: kcc Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D16164 llvm-svn: 257785
100 lines
2.4 KiB
C++
100 lines
2.4 KiB
C++
//=-- lsan.cc -------------------------------------------------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of LeakSanitizer.
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// Standalone LSan RTL.
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//
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//===----------------------------------------------------------------------===//
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#include "lsan.h"
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#include "sanitizer_common/sanitizer_flags.h"
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#include "sanitizer_common/sanitizer_flag_parser.h"
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#include "sanitizer_common/sanitizer_stacktrace.h"
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#include "lsan_allocator.h"
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#include "lsan_common.h"
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#include "lsan_thread.h"
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bool lsan_inited;
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bool lsan_init_is_running;
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namespace __lsan {
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///// Interface to the common LSan module. /////
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bool WordIsPoisoned(uptr addr) {
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return false;
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}
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} // namespace __lsan
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using namespace __lsan; // NOLINT
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static void InitializeFlags() {
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// Set all the default values.
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SetCommonFlagsDefaults();
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{
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CommonFlags cf;
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cf.CopyFrom(*common_flags());
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cf.external_symbolizer_path = GetEnv("LSAN_SYMBOLIZER_PATH");
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cf.malloc_context_size = 30;
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cf.intercept_tls_get_addr = true;
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cf.detect_leaks = true;
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cf.exitcode = 23;
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OverrideCommonFlags(cf);
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}
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Flags *f = flags();
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f->SetDefaults();
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FlagParser parser;
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RegisterLsanFlags(&parser, f);
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RegisterCommonFlags(&parser);
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parser.ParseString(GetEnv("LSAN_OPTIONS"));
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SetVerbosity(common_flags()->verbosity);
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if (Verbosity()) ReportUnrecognizedFlags();
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if (common_flags()->help) parser.PrintFlagDescriptions();
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}
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extern "C" void __lsan_init() {
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CHECK(!lsan_init_is_running);
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if (lsan_inited)
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return;
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lsan_init_is_running = true;
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SanitizerToolName = "LeakSanitizer";
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CacheBinaryName();
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InitializeFlags();
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InitCommonLsan();
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InitializeAllocator();
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InitTlsSize();
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InitializeInterceptors();
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InitializeThreadRegistry();
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u32 tid = ThreadCreate(0, 0, true);
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CHECK_EQ(tid, 0);
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ThreadStart(tid, GetTid());
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SetCurrentThread(tid);
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if (common_flags()->detect_leaks && common_flags()->leak_check_at_exit)
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Atexit(DoLeakCheck);
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InitializeCoverage(common_flags()->coverage, common_flags()->coverage_dir);
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lsan_inited = true;
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lsan_init_is_running = false;
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}
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extern "C" SANITIZER_INTERFACE_ATTRIBUTE
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void __sanitizer_print_stack_trace() {
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GET_STACK_TRACE_FATAL;
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stack.Print();
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}
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