forked from OSchip/llvm-project
89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
//===-- tsan_symbolize.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 ThreadSanitizer (TSan), a race detector.
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//
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//===----------------------------------------------------------------------===//
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#include "tsan_symbolize.h"
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#include "sanitizer_common/sanitizer_common.h"
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#include "sanitizer_common/sanitizer_placement_new.h"
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#include "sanitizer_common/sanitizer_symbolizer.h"
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#include "tsan_flags.h"
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#include "tsan_report.h"
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#include "tsan_rtl.h"
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namespace __tsan {
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void EnterSymbolizer() {
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ThreadState *thr = cur_thread();
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CHECK(!thr->in_symbolizer);
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thr->in_symbolizer = true;
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thr->ignore_interceptors++;
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}
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void ExitSymbolizer() {
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ThreadState *thr = cur_thread();
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CHECK(thr->in_symbolizer);
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thr->in_symbolizer = false;
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thr->ignore_interceptors--;
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}
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// May be overriden by JIT/JAVA/etc,
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// whatever produces PCs marked with kExternalPCBit.
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extern "C" bool __tsan_symbolize_external(uptr pc,
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char *func_buf, uptr func_siz,
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char *file_buf, uptr file_siz,
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int *line, int *col)
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SANITIZER_WEAK_ATTRIBUTE;
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bool __tsan_symbolize_external(uptr pc,
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char *func_buf, uptr func_siz,
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char *file_buf, uptr file_siz,
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int *line, int *col) {
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return false;
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}
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SymbolizedStack *SymbolizeCode(uptr addr) {
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// Check if PC comes from non-native land.
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if (addr & kExternalPCBit) {
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// Declare static to not consume too much stack space.
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// We symbolize reports in a single thread, so this is fine.
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static char func_buf[1024];
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static char file_buf[1024];
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int line, col;
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SymbolizedStack *frame = SymbolizedStack::New(addr);
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if (__tsan_symbolize_external(addr, func_buf, sizeof(func_buf), file_buf,
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sizeof(file_buf), &line, &col)) {
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frame->info.function = internal_strdup(func_buf);
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frame->info.file = internal_strdup(file_buf);
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frame->info.line = line;
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frame->info.column = col;
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}
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return frame;
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}
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return Symbolizer::GetOrInit()->SymbolizePC(addr);
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}
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ReportLocation *SymbolizeData(uptr addr) {
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DataInfo info;
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if (!Symbolizer::GetOrInit()->SymbolizeData(addr, &info))
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return 0;
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ReportLocation *ent = ReportLocation::New(ReportLocationGlobal);
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ent->global = info;
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return ent;
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}
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void SymbolizeFlush() {
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Symbolizer::GetOrInit()->Flush();
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}
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} // namespace __tsan
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